baber/WOPTO huggingface dataset:
Patent CA-2032575-A1 (CA)
Title: Esters containing bonded fluorocarbon and oxypropylenealkylether groups, emulsions containing these esters and their use for the preparation of cellular plastics by polyisocyanatepolyaddition
Inventor: VOLKERT OTTO
IPC: C09K23/42
Filed: 1990-12-18
Abstract: The invention relates to novel esters which contain fluorocarbon and oxypropylenealkyl ether groups in bonded form, of the formulae 
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 in which: 
 
  Rf is 
 
  a linear or branched, partially fluorinated or perfluorinated alkyl group having 2 to 10 carbon atoms, 
  a partially fluorinated or perfluorinated cycloalkyl group having 4 to 8 carbon atoms, 
  a perfluorophenyl group or 
  a perfluoroalkylphenyl group having 1 to 6 carbon atoms in the perfluoroalkyl radical, 
 
  R is a linear or branched alkyl group having 1 to 4 carbon atoms and 
  n is an integer from 2 to 70, 
 to storage-stable, blowing agent-containing emulsions which contain 
 
  at least one partially fluorinated or perfluorinated (cyclo)aliphatic hydrocarbon having 3 to 8 C atoms and/or sulphur hexafluoride, 
  at least one optionally modified organic polyisocyanate or a higher-molecular-weight reactive hydrogen compound and 
  at least one of the abovementioned carboxylates or carbamidates, 
 and to the use of these emulsions for the preparation of cellular plastics by the polyisocyanate polyaddition process.
Patent CA-2033565-A1 (CA)
Inventor: ITO MOTOSHI
IPC: G11B7/126
Filed: 1991-01-03
Abstract: This invention describes an optical disk data reproducing apparatus for reading and reproducing, from an optical disk, data having an address period, an automatic laser power control (ALPC) period and a data period.  The apparatus comprises an optoelectric conversion system for reading data and converting the data to an electrical signal; an automatic gain control system for receiving and changing the amplitude of the electrical signal; and an ALPC period detecting systems for detecting the ALPC period in the data and for producing an ALPC period signal indicative of the ALPC period.
Patent CA-2033989-A1 (CA)
Inventor: PORTER WILLIAM F
IPC: D21F11/12
Filed: 1990-06-05
Abstract: A wet pult of mineral fibers or the like (10) is forced between a pulp carrier (14) and a corrugated texturing skid (18) inclined toward the downstream end of a moving slab of the pulp. The corrugations of the skid are co-directional with the machine direction of the conveyor belt (16) that transports the pulp under and beyond the skid (18).
Patent CA-2034497-A1 (CA)
Title: Microwavable double-bag food container
Inventor: HARTMAN RICHARD R
IPC: B65D81/34
Filed: 1990-05-17
Abstract: A package (20) for use in cooking or heating a food product (21) in a microwave oven which comprises an outer paper container (25) and an inner liner (26) and a microwave interactive heater (27) comprising a coating composition printed onto the surface of a suitable substrate or a selected portion of the outer container (25) or inner liner (26). The coating composition preferably comprises finely divided carbon, aluminium flake, clay and a binder in a preferred embodiment, a polyester inner liner (26) eliminates the need for an overwrap in packages (20) containing a food product (21), such as popcorn and oil.
Patent CA-2034960-A1 (CA)
Title: Succinimide compositions
Inventor: SCATTERGOOD ROGER
IPC: C08F8/32
Filed: 1991-01-25
Abstract: A dispersant prepared by (i) reacting polyamine with acyclic hydrocarbyl substituted succinic acylating agent in which the substituent contains an average of at least 70 carbon atoms, and (ii) reacting the product so formed with an aliphatic vicinal dicarboxylic acylating agent having 4 to 6 carbon atoms in the molecule (excluding, in the case of esters, the carbon atoms of the esterifying alcohol). In step (i) the acylating agent is reacted with the polyamine in a mole ratio of from 1.05 to 2.85 moles of acylating agent per mole of polyamine, and in step (ii) the vicinal dicarboxylic acylating agent is employed in an amount sufficient to provide a total mole ratio of at least 3.05 moles of acylating agents per mole of polyamine. Lubricant compositions and additive con-centrates capable of passing the ASTM Sequence VE Engine Test for "SG" performance and the Volkswagen Seal Test can be formed using dispersants made in this manner.
Patent CA-2035349-A1 (CA)
Inventor: MATTHEWS ANDREW J A
IPC: A61F7/08
Filed: 1991-01-31
Abstract: Abstract An activator for a heat pack comprising a substrate carrying abrasive particles.  The activator indicates crystallization of a supersaturated solution contained within the heat pack, the process of crystallization being an exothermic process.
Patent CA-2035839-A1 (CA)
Inventor: FUJITA TAKASHI
IPC: C08F4/656
Filed: 1991-02-06
Abstract: Ziegler polymerization of .alpha.-olefins is disclosed which is characterized by a solid catalyst component.      The solid catalyst component, Component (A), comprises Sub-component (i) which is a solid catalyst component for Ziegler catalysts comprising Ti, Mg and a halogen;       Sub-component (ii) which is a silicon compound having a plurality of a bond represented by a formula: Si-OR1 R1 m X n Si(OR2)4-n-m wherein R1 indicates a hydrocarbyl group of 1 to 8 carbon atoms, Sub-component (iii) which is a vinylsilane compound, and Sub-component (iii) which is an organometal compound of a metal of Groups I to IV of the Periodic Table. No need of an outside electron donor may be required, and the polymer produced is improved in its content of a "tacky" polymer.
Patent CA-2037380-A1 (CA)
Title: Tub ting
Inventor: EISAN ALFRED G
IPC: A47K17/00
Filed: 1991-03-01
Abstract: Abstract The purpose of this invention is to maximize the usable area of a typical household bathtub. This invention consists of a three piece plastic unit which is designed to increase the water volume in a standard household bathtub. The three consist of;          (I) A moulded plastic bar. FIGURE #I          (2) A length of plastic film. FIGURE #2 (3) A moulded plastic overflow extension cup. FIGURE #3 The reason for the items which comprise the unit are: the first two act as splashguards and the third allows maxi-mum water level to be reached.
Patent CA-2039321-A1 (CA)
Title: Process for forming multi-level coplanar conductor/insulator films employing photosensitive polyimide polymer compositions
Inventor: CRONIN JOHN E
IPC: G03F7/26
Filed: 1991-03-28
Abstract: PROCESS FOR FORMING MULTI-LEVEL COPLANAR  CONDUCTOR/INSULATOR FILM EMPLOYING, PHOTOSENSITIVE POLYIMIDE POLYMER   COMPOSITIONS     Abstract of to Disclosure Disclosed is  a process  for producing multi-level conductor/insulator films on a processed semiconductor substrate  having  a  conductor  pattern.   The  insulator layers, each comprise a photosensitive polyimide polymer composition, and this allows the desired wiring channels and stud vias to be formed directly in the insulator layers, without the use of separate masking layers and resulting image transfer steps,  thus providing a less cumbersome and costly process.
Patent CA-2039322-A1 (CA)
Title: Automatic immunological measuring system
Inventor: ASHIHARA YOSHIHIRO
IPC: G01N35/10
Filed: 1991-03-28
Abstract: An automatic immunoassay apparatus utilizes cartridges each having at least two wells, a first well of said wells containing solid phase material carrying antigen or antibody, a second well of said wells containing antibody or antigen labelled with labelling compound. The wells may be sealed with a suitable sealing film before use and the sealing film is broken when the cartridge is to be used. The cartridges are transported to a predetermined position on a steppingly movable reaction line and conveyed thereby at a predetermined interval. While the reaction line steps, a sample, labelled antigen or antibody contained in the second well and substrate, if necessary, are added to the first well and stirred at predetermined timings and reaction between the sample and a reactive solution is measured under control of a control device having memory means storing operator selectable programs for various measuring methods.
Patent CA-2039579-A1 (CA)
Title: Multiple portion recloseable package
Inventor: HUSTAD GERALD O
IPC: B65D33/25
Filed: 1991-04-02
Abstract: MULTIPLE PORTION RECLOSEABLE PACKAGE                ABSTRACT OF THE DISCLOSURE     A recloseable package has discrete, multiple product portion enclosures between first and second package films . Each product portion enclosure is separated from its adjacent product portion enclosure by a package central web portion. A recloseable seal is provided on the central web portion for each multiple product portion enclosure, and the product is hermetically sealed in its portion enclosure by a hermetic seal extending around the periphery thereof and interior of each recloseable seal.
Patent CA-2042039-A1 (CA)
Inventor: UMLAUFT HELMUT
IPC: A63B49/02
Filed: 1990-09-11
Abstract: Abstract:     Racquets, in particular tennis racquets In a racquet, particularly a tennis racquet, having a handle (8) and a stretcher frame secured via a throat region (2) for stringing in which the cross-section of the stretcher frame measured transversely to the stringing has at least one section of largest dimension, the cross-section (a, b, c) of the frame (1) or the stretcher frame in the throat region (2) and in the region of the racquet head (3) facing away from the handle (8) is greater than in the region of the stretcher frame lying therebetween, whereby the cross-section (c) in the region of the racquet head (3) facing away from the handle is greater than the cross-section (b) in the throat region.     (Figure 3)
Patent CA-2042619-A1 (CA)
Inventor: REICH RICHARD M
IPC: H04M11/04
Filed: 1991-05-15
Abstract: A personal  emergency  response system  (PERS)  is  disclosed which includes a method and apparatus for monitoring alarm signals to provide improved emergency response capabilities and enhanced system operability.   The system includes a  local response center for  relaying  alarm signals  received  from  subscribers  to mobile on-site field personnel via individual paging units.   The system is also capable of  retransmitting  an alarm signal  in the event that  a  response  to  the  original  alarm  signal  has  not  been registered within a predetermined period of time.  The system is also provided with redundant communications paths to minimize the possibility  of  a  missed  alarm  message  from  a  subscriber,  and self-test   capabilities   for   detecting   system   faults   and transmitting fault messages to the individual paging units of the system.
Patent CA-2043553-A1 (CA)
Title: Electro therapy apparatus and method
Inventor: FAKHRI OMAR
IPC: A61N1/20
Filed: 1991-05-30
Abstract: ABSTRACT     Electro-therapy apparatus is provided comprising first and second electrode means 22,24 at least the first of which is shaped to provide a substantial area of engagement with an outer surface region of the human head or face, and a current source 12 connectable with the first and second electrode means so as to thereby pass current through at least a portion of the human head.
Patent CA-2043582-A1 (CA)
Title: Method and apparatus for detecting wavelength of laser beam
Inventor: TERADA MITSUGU
IPC: H01S3/00
Filed: 1991-05-30
Abstract: ABSTRACT    A measured laser oscillation light is introduced into an etalon, a concentric circular interference stripe derived from the etalon is irradiated on one dimensional photodetector array, and a diameter of said interference stripe is measured to measure a wavelength.    By an arrangement wherein the reference laser oscillation light and the measured laser oscillation light are introduced into the etalon as described above, extremely high accurate wavelength measurement can be made without being affected by a positional deviation of an optical system and precision.
Patent CA-2043667-A1 (CA)
Inventor: BACHENKO JOAN C
IPC: G10L13/10
Filed: 1991-05-31
Abstract: An enhanced text-to-speech synthesizer accepts freely generated text sequences of words and synthesizes the received sequences with proper emphasis and with properly placed pauses. In combination with other elements, the synthesizer provides for an enhanced Dual Party Relay Service where the text generated by the sound-impaired party is synthesized without an attendant's intervention. The text generated by users is made more intelligible by interpreting abbreviations, correcting errors (misspellings and "noise"), translating special terms that are used by the community of users, de-emphasizing words based on syntactic considerations and inserting pauses to enhance intelligibility.
Patent CA-2044497-A1 (CA)
Title: Surface treating agent for aluminum line pattern substrate
Inventor: AOYAMA TETSUO
IPC: H01L21/302
Filed: 1991-06-13
Abstract: A surface treating agent for an aluminum line pattern substrate is disclosed, comprising an aqueous solution containing 0.01 to 15% by weight of quaternary ammonium hydroxide represented by the general formula:                (see fig. I) wherein R is an alkyl group having 1 to 3 carbon atoms, or a hydroxy-substituted alkyl group having 1 to 3 carbon atoms, and R1, R2 and R3 are independently an alkyl group having 1 to 3 carbon atoms, and 0.1 to 20% by weight of sugar or sugar alcohol.  This agent can inhibit the after-corrosion of aluminum effectively.
Patent CA-2047384-A1 (CA)
Inventor: KITTILSEN BJORN
IPC: B22D11/11
Filed: 1991-07-18
Abstract: Method and apparatus for use in hot top continuous casting of reactive metals, especially magnesium and magnesium containing alloys.  To prevent oxidation a protective gas is supplied to the porous refractory hot top material (1) and eventual joints. It is arranged a closed chamber (7) between hot top (1) and a jacket (8) for supply of gas.  It is preferred to use sulphur hexafluoride eventually in mixture with other gases.
Patent CA-2048756-A1 (CA)
Title: Single crystal, environmentally-resistant gas turbine shroud
Inventor: WORTMAN DAVID J
IPC: C22F1/00
Filed: 1991-08-08
Abstract: Patent SINGLE CRYSTAL, ENVIRONMENTALLY-RESISTANT             GAS TURBINE SHROUD       ABSTRACT OF THE DISCLOSURE        A single crystal shroud, preferably used around the high pressure turbine section of a gas turbine engine, has a composition, in weight percent, of from about 5 to about 10 percent chromium, from about 5 to about 10 percent cobalt, from 0 to about 2 percent molybdenum, from about 3 to about 10 percent tungsten, from about 3 to about 8 percent tantalum, from 0 to about 2 percent titanium, from about 5 to about 7 percent aluminum, from 0 to about 6 percent rhenium, from 0 to about 0.50 percent hafnium, from 0 to about 0.07 percent carbon, from 0 to about 0.015 percent boron, and from 0 to about 0.075 percent yttrium, balance nickel.  The environmentally- resistant shroud preferably is used in the as-cast condition without any oxidation and corrosion resistant flowpath coating.
Patent CA-2049762-A1 (CA)
Title: Erasable optical recording materials and methods based on tellurium alloys
Inventor: PAN KEE-CHUAN
IPC: G11B7/243
Filed: 1991-08-23
Abstract: ERASABLE OPTICAL RECORDING MATERIALS         AND METHODS BASED ON TELLURIUM ALLOYS              Abstract of the Disclosure An optical recording element comprising a thin film of an alloy is disclosed.  The alloy is represented by the formula Tea(SbxSnyInz)1-a wherein a is between about 0.38 and 0.62; x is between about 0.05 and 0.65; y divided by z is between about 0.5 and 5; with the proviso that the product of (y+z) and (1-a) is greater than about 0.20.  The alloys have improved data stability while retaining excellent write-erase characteristics.
Patent CA-2049843-A1 (CA)
Inventor: SPULGIS IVARS S
IPC: F04B53/12
Filed: 1991-08-26
Abstract: A reciprocating pump which substantially eliminates cavitation problems without imposing capacity and flow limitations to maintain a net positive suction head.  The pump comprises a cylinder having a liquid inlet and a liquid outlet, a piston reciprocably movable within the cylinder and generally intermediate the liquid inlet and liquid outlet,  the piston having a liquid flow conduit therethrough generally co-axial with the cylinder,  the liquid flow conduit having an inlet end in liquid communication with the cylinder liquid inlet and an outlet end in liquid communication with the cylinder liquid outlet, a piston rod reciprocably movable generally along the axis of the cylinder for reciprocably moving the piston within the cylinder in a direction toward the cylinder liquid outlet and in a reciprocal direction and a valve operatively associated with an intermediate the piston rod and the piston liquid flow conduit inlet end for alternatively opening and closing the inlet to liquid flow, the valve being closed when the piston rod and piston are moved in the direction toward the cylinder liquid outlet and being open when the piston rod and piston are moved in the reciprocal  direction.    In  one  embodiment,  the  valve comprises a valve disk freely movable on one end of the piston rod.
Patent CA-2049867-A1 (CA)
Inventor: BAUMANN HANS-PETER
IPC: D06P1/649
Filed: 1991-08-26
Abstract: A highly emulsifiable mixture of N-alkylphthalimides consists essentially of: (a) N-(n-propyl)-phthalimide (b) N-(sec.-C4-6 alkyl)-phthalimide and (c) N-(n-C4-6-alkyl)-phthalimide wherein the weight ratio (a)/(P) is in the range of 3/100 to 14/100. They may be used as carriers for the dyeing of fibrous material.
Patent CA-2052012-A1 (CA)
Title: Method and an apparatus for separating gas from solids-containing liquid
Inventor: ELONEN JORMA
IPC: F04D7/04
Filed: 1991-09-23
Abstract: The present invention relates to a method and an apparatus for the discharge of gas from a liquid-solids mixture. The apparatus in accordance with the invention may be applied in such places where air is separated from a medium by means of reduced pressure/vacuum. The apparatus in accordance with the present invention is especially applicable for the pulp and paper industry in situations where gas has been separated from the fiber suspension, but where the gas contains some fibers or other solids, which must be separated from the gas flow prior to the vacuum pump generating suction. The method in accordance with the present invention is characterized in that fraction containing gas, liquid and solid material is passed from the pulp treatment apparatus to a separate separating apparatus, solids are separated from said fraction, said solids are discharged from the separation apparatus, gas/gas-liquid mixture is guided to the vacuum apparatus and said gas/gas-liquid mixture is discharged from the system. The apparatus in accordance with the present invention is characterized in that it comprises a separating apparatus with a separation chamber (98) and an impeller (100) and a vacuum apparatus (108). <IMAGE>
Patent CA-2052194-A1 (CA)
Title: Composite diamond abrasive compact
Inventor: TANK KLAUS
IPC: C22C26/00
Filed: 1991-09-25
Abstract: A B S T R A C T            A method of producing a composite diamond abrasive compact includes the steps of forming an unbonded assembly comprising a cemented carbide body, a layer of catalyst metal on a surface of the carbide body, a layer of carbide particles, alone or in admixture with other particles, on the catalyst metal layer, and a layer of diamond particles on the carbide layer and subjecting the unbonded assembly to conditions of elevated temperature and pressure at which diamond is crystallographically stable to form a composite diamond abrasive compact
Patent CA-2053461-A1 (CA)
Title: Cutting tool
Inventor: KRESS DIETER
IPC: B23B51/04
Filed: 1991-10-15
Abstract: A cutting tool for expanding or opening up the diameter of boreholes includes at least one reversible knife plate with a front surface.  The knife plate can be clamped with at least one clamping shoe into a recess provided in a cutter head.  The front surface of the knife plate has at least two grooves which extend essentially parallel and preferably symmetrical with respect to the longitudinal axis of the knife plate.  The grooves cooperate with projections provided on the contact surface of the clamping shoe facing the front surface of the knife plate and form a positively locked connection therewith.
Patent CA-2056224-A1 (CA)
Title: Conformal composite molding
Inventor: BOUSTEAD TERRY M
IPC: B29C33/50
Filed: 1991-11-26
Abstract: ABSTRACT OF THE DISCLOSURE                     Conformal Composite Molding An apparatus and method for resin transfer molding high strength fiber reinforced composite articles, especially those articles which by design would become locked onto the mold after cure.  A compliant and variably rigid mold half locates internal details, facilitates loading of material into smaller cavities, and is forgiving of bulk variations in the lay-up.  The compliant mold half can be made rigid or flexible by pressure transmitted through a flowable media.  After the article is molded and cured, the compliant mold half is collapsed for easy removal of the article.
Patent CA-2057935-A1 (CA)
Title: High temperature generalized corrosion test installation
Inventor: BRESSAN JOELLE A
IPC: G01N3/32
Filed: 1991-12-18
Abstract: ABSTRACT OF THE DISCLOSURE       The installation comprises a selective liquid-feeder assembly, a selective gas-feeder assembly for feeding gas under pressure, a mixing and preheating assembly itself comprising a vaporizing stage, a mixing stage, and a preheating stage to raise the gas-vapor mixture to a temperature of about 150°C to about 300°C, and a  distributor assembly for distributing the flow of gas-vapor mixture to a plurality of high temperature generalized corrosion test circuits.  Each test circuit comprises a reactor including an intermediate preheater stage for preheating the gas-vapor mixture applied to the reactor to a temperature of about 400°C to about 600°C, and a final heater stage containing at least one sample of material to be tested which sample is put into contact with the gas-vapor mixture flow from the intermediate preheater stage, and raised in the final heater stage to a temperature lying between about 700°C and about 850°C.
Patent CA-2058172-A1 (CA)
Title: A proton exchange membrane particularly suitable for use in a fuel cell
Inventor: CARL WILLIAM P
IPC: H01M8/10
Filed: 1991-12-20
Abstract: ABSTRACT     The invention is a fluoropolymer material particularly suitable for use as a proton exchange membrane in a proton exchange membrane fuel cell.  The characteristics that make the material particularly useful are the Pact that is has an equivalent weight between 700 and 1,000 and a water absorption as high as about 100 weight percent, based on dry membrane.     In addition, it is desirable for the nonionic precursor form of the proton exchange membrane polymer to have a melt viscosity of between 6,000 and 80,000 Poise at 250°C in accordance with ASTM test method D-3835.     The invention also includes a film formed from the fluoropolymer material that has a thickness of from 0.002 inch (0.0051) to 0.009 inch (0.0229 cm).  In addition, the invention includes a PEM fuel cell containing the high-performance PEM fuel cell film and a method for generating electricity using the PEM fuel cell.     39.344-F
Patent CA-2060076-A1 (CA)
Title: Seat belt retractor
Inventor: FUJIMURA YOSHIICHI
IPC: B60R22/42
Filed: 1992-01-27
Abstract: ABSTRACT    The seat belt retractor of the present invention is provided with a fragile portion .gamma. near a supporting section of a rotating shaft 21 on two side walls 2b (and 2a - not shown) of a case 2.  The fragile portion .gamma. undergoes plastic deformation or rupture when a load exceeding a predetermined value is applied on a seat belt 1 through the rotating-squeezing member 20 and a rotating shaft 21 by pulling force.  When the fragile portion y undergoes plastic deformation or rupture, the rotating-squeezing member 20 is moved toward loading direction, and the rotating-squeezing member 20 is separated from the sliding-squeezing member 19.  Then, the rotating-squeezing member 20 is turned over, and the squeezing force on the seat belt 1 by the rotating-squeezing member 20 and the sliding-squeezing member 19 is alleviated.  As the result, the application of highly concentrated load on the seat belt can be avoided.