baber/WOPTO huggingface dataset:
Patent CA-2037177-A1 (CA)
Title: Water degasification and distillation apparatus
Inventor: ELLIS JOHN C JR
IPC: C02F1/04
Filed: 1991-02-27
Abstract: ABSTRACT Water degasification and distillation apparatus having a container for a reservoir of water to be degasified and distilled,  a  relatively  small  boiler  adjoining  the container and having a feed water conduit connecting the container and boiler so that a selected water level in the container will fill the boiler to the same level, a coiled tube condenser within the container immersed in the water therein,  the condenser coil having a vertically disposed longitudinal  axis,  a  second  conduit  in  the  boiler connecting the space above the water level therein to the inlet of the condenser so that steam flows from the boiler to the condenser,  an outlet on the condenser extending through  a  container wall  for discharging the condensed steam as degasified distilled water, a heater in the boiler for heating he water therein, and a motor driven stirrer axially  of  the  coiled  tube condenser  for generating  a swirling movement of the reservoir water with formation of steam bubbles therein.   Optionally, an oversized filter is mounted at the outlet of the condenser.
Patent CA-2038288-A1 (CA)
Title: Distributing material in blow mold head
Inventor: RUETALO ALBERTO F
IPC: B29C49/28
Filed: 1991-03-14
Abstract: ABSTRACT OF THE DISCLOSURE A blow head for blow molding thermoplastic products includes a casing and a concentric assembly of mandrels aligned with a predetermined flow axis. The mandrels and casing cooperate to define distinct concentric flow channels. A former shapes molten thermoplastic materials discharged from the flow channels into a single tube with a selected cross-sectional thickness. Spiral grooves are formed in external surfaces of the mandrels to distribute material more evenly around an associated flow channel. Each mandrel has a circumferential chamber for receiving thermoplastic material under pressure and supplying the material to upstream ends of the flow channel and grooves associated with the mandrel. Material inlets inject the materials under pressureinto each chamber in a direction transverse to the axis. The inlets are constituted by passage sections formed in the casing and the mandrels that align simultaneously to constitute the inlets. A heart-shaped flow divider in each chamber immediately confronts and divides the flow from the associated inlet into substantially equal flows in circumferentially opposing directions around the chamber. Thermoplastic materials are distributed more evenly in the flow channels so that the tube and final product formed from the tube have greater uniformity.
Patent CA-2041874-A1 (CA)
Inventor: MAURER RICHARD T
IPC: B01D53/047
Filed: 1991-05-06
Abstract: Ethane is separated from a methane- and ethane-containing feedstream using pressure-swing adsorption wherein the adsorbent is a faujasite type of zeolitic aluminosilicate containing (1) at least 20 equivalent % of a cation selected from zinc, a rare earth metal, hydrogen, ammonium or calcium, and (2) not more than 80 equivalent percent of an alkali metal or alkaline earth metal cation other than calcium.
Patent CA-2042567-A1 (CA)
Title: Compression device, especially for pressure filling of a tank
Inventor: BAUER DANIEL
IPC: F04B35/01
Filed: 1991-05-14
Abstract: The gas compression device comprises a motor (1), a piston (2) capable of moving linearly in a pump body, a means of transmission (T) between the motor (1) and the piston (2) capable of converting the rotary movement supplied by the motor (1) into a reciprocating translational movement of the piston (2). Means of varying the speed, comprising a cam (12) are provided for imparting a different speed to the piston (2) of the compressor according to the resistance offered to the motor (1) during a complete admission-compression cycle, in such a way that the load moment is essentially constant and the motor (1) functions at its maximum torque and therefore at its maximum efficiency. The profile of the cam (12) is determined so as to ensure an essentially isothermic compression of the gas. 
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Patent CA-2042947-A1 (CA)
Title: Method for injection molding
Inventor: BAXI INDRA R
IPC: B29C45/00
Filed: 1991-05-21
Abstract: METHOD FOR INJECTION MOLDING               Abstract of the Disclosure A process for producing an injection molded product includes the step of introducing an amount of a molten thermoplastic sufficient for the preparation of the injection molded product into a mold cavity.  A quantity of heated gas is introduced into the mold cavity, the molten thermoplastic in the mold cavity thereby forming a gas cavity in the molten thermoplastic. The heated gas is then vented from the gas cavity and a cooling gas is introduced into the gas cavity. The injection molded product is cooled and then the cooling gas is vented from the gas cavity.
Patent CA-2045129-A1 (CA)
Title: Herpes simplex virus type i expression vector
Inventor: GELLER ALFRED I
IPC: C12N5/10
Filed: 1990-01-22
Abstract: A recombinant HSV-1 vector capable of infecting and being propagated in a non-mitotic cell. The vector can be used to treat neurological diseases, and to produce animal and in vitro models of such diseases.
Patent CA-2047634-A1 (CA)
Title: Ribbon re-inking machine
Inventor: WRIGHT JOHN G
IPC: B01J31/14
Filed: 1991-07-23
Abstract: ABSTRACT            Used computer printer, W.P. or typewriter ribbons are reinked using a machine having a ribbon spool or cartridge loading station, an ink applicator and opto-electric sensors disposed one each side of the applicator along the ribbon path.  Manual or automatic  control  in response to the sensor output signals representative of the density of ink (darkness), enables the application of a quantity of ink sufficient to produce a desired ink density along substantially the entire length of the ribbon.
Patent CA-2047952-A1 (CA)
Title: Polyimide compositions
Inventor: STENZENBERGER HORST
IPC: C08F222/40
Filed: 1991-07-26
Abstract: A B S T R A C T                       POLYIMIDE COMPOSITIONS    Curable compositions which comprise: a)   polyimides of the general formula (I)                 (I) wherein B signifies a bivalent radical containing a carbon-carbon double bond, and wherein A represents an X-valent radical, but at least a bivalent radical; and b)   alkenylphenoxyalkanes of the general formula (II) (II)   wherein D represents a Y-valent radical, Y is 1,2 or 3 and wherein E signifies a radical of the following formulae   wherein R represents an alkyl group with 1 to 6 carbon atoms and R' a 1,2 or 2,3 alkenyl group with 3 to 8 carbon atoms.
Patent CA-2049871-A1 (CA)
Inventor: BAUER FRANK T
IPC: B29C47/06
Filed: 1991-08-26
Abstract: Vinylidene chloride methyl acrylate copolymer coextruded with second and third different polymeric compositions in fabrication of multiple layer films. The third layer is between the first and second layers. The second composition can have a melting temperature greater than 204.degree.C, and can be, for example, polyester, polyamide, or polycarbonate. Preferred films contain at least five layers, at least one of which has a typical extrusion processing temperature higher than the typical extrusion processing temperature of the VDC-MA. Methods of fabricating such films are also disclosed.
Patent CA-2051554-A1 (CA)
Title: Thin film deposition method
Inventor: AKETAGAWA KEN-ICHI
IPC: H01L21/205
Filed: 1991-09-17
Abstract: A thin film deposition method consists of depositing a thin film on a wafer by supplying reactant gas molecules toward and on to the wafer within a vacuum vessel or chamber. The pressure within the vacuum vessel is set to the pressure under which the mean free path (d) of the molecules contained in the supplied reactant gas can be longer than the shortest distance (L) between the wafer and the wall of the vacuum vessel exposed to the vacuum side, or d > L. The temperature of the wafer is set to the temperature (T sub) at which the reactant gas can cause substantially a thermally decomposing reaction. The temperature of the vacuum side-exposed wall of the vacuum vessel (T wall) is set to a temperature range having the lower limit higher than the temperature (T vap) at which the saturated vapor pressure can be maintained to be equal to the partial pressure of the molecules contained in the reactant gas, and having the upper limit lower than the temperature of the wafer (T sub), or T vap < T wall < T sub.
Patent CA-2053354-A1 (CA)
Title: Circuit arrangement
Inventor: SZUBA STEFAN F
IPC: H05B37/02
Filed: 1991-10-11
Abstract: PHA 21.624                                   21.05.1991 ABSTRACT: Circuit arrangement.     A fluorescent lighting arrangement including a lamp controller for controlling the light intensity of fluorescent lamps in response to a motiondetecting arrangement which receives its operating voltage from the lamp controller.
Patent CA-2054000-A1 (CA)
Title: Accumulator
Inventor: HATTORI KENJI
IPC: F15B1/10
Filed: 1991-10-22
Abstract: In an accumulator in which a peripheral edge of a bladder dividing the interior of a shell into a gas chamber and a liquid chamber is attached to the shell, the radius of curvature of an inner wall of the shell defining the gas chamber is larger than that of an inner wall of the shell defining the liquid chamber.  This construction ensures that the diameter of the bladder can be relatively increased, the deflection of the bladder with a variation in pressure in the gas chamber and in the liquid chamber can be increased, and the radius of curvature of a curved portion of the peripheral edge of the bladder can be increased, there by contributing to an overall improvement in the durability of the bladder.
Patent CA-2054081-A1 (CA)
Title: Suction roll without suction box, particularly for a dryer group of a paper-making machine
Inventor: SCHIEL CHRISTIAN
IPC: F26B13/16
Filed: 1991-10-23
Abstract: SUCTION ROLL WITHOUT SUCTION BOX, PARTICULARLY  FOR A DRYER GROUP OF A PAPER MAKING MACHINE            ABSTRACT OF THE DISCLOSURE           The suction roll of a dryer group is in the path of the web and of the web support belt from an upstream dryer cylinder to a downstream dryer cylinder. The suction roll has an annular roll shell having a plurality of radial holes and being free of stationary inserts at least over the predominant part of the length of the roll shell.  A hollow roll journal at at least one end of the suction roll connects vacuum into the suction roll and to the radial holes.  In at least some of the holes there are respective deflector pieces.   Each extends a short radial distance into the inside of the roll shell over a short radial portion.  The deflector piece has a continuous channel which extends radially inward through the hole toward the inside of the roll in a direction substantially parallel to the direction of extension of the hole and the radially inward portion of the channel is curved in the direction contrary to the direction of rotation of the roll shell.
Patent CA-2057527-A1 (CA)
Inventor: DRYSDALE KEITH
IPC: A61H33/00
Filed: 1991-12-09
Abstract: A method of heating water in a spa which has a plurality of venturi jets, a high speed pump which circulates water through the venturi jets, and a water thermostat. Connect the water thermostat positioned in the water of the spa to the high speed pump, such that the high speed pump is activated to propel water through the venturi jets at high speed whenever the water temperature falls below a preset level.
Patent CA-2058138-A1 (CA)
Title: Paraffin alkylation process
Inventor: CROSSLAND CLIFFORD S
IPC: C07C9/16
Filed: 1991-12-11
Abstract: ABSTRACT OF THE DISCLOSURE    Paraffin alkylation using  solid,  particulate catalyst  is carried out by preparing an alkane-catalyst mixture in a wash zone, passing the alkane-catalyst mixture to a plug flow reactor where a minor amount of olefin is introduced to contact the alkane-catalyst mixture  and  react  to  form  alkylate  and  the alkane-catalyst-alkylate mixture is passed through the reactor with  a  minimum  of  back mixing  to  restrict  the  reaction  of alkylate  with  olefin,   thus  substantially  preventing polymerization.     The  alkane-catalyst-alkylate  mixture, substantially free of olefin is passed to a disengaging zone where the liquid is removed and the solid particulate catalyst is recovered and returned to the wash zone for recycle.  The alkane is present in the reactor in sufficient molar excess to react substantially all of the olefin.   Any unreacted isoalkane is recycled to the reactor with make-up isoalkane added to maintain the molar excess.   The preferred catalyst is an acid washed silica treated with antimony pentafluoride and more preferably treated with alkane at low temperature, e.g. -30 to -160°C.
Patent CA-2058190-A1 (CA)
Title: Process for preparing pentafluorodichloropropanes
Inventor: AOYAMA HIROKAZU
IPC: C07C17/278
Filed: 1991-12-20
Abstract: ABSTRACT OF THE DISCLOSURE 1,1,1,2,2-Pentafluoro-3,3-dichloropropane and 1,1,2,2,3-pentafluoro-1,3-dichloropropane are prepared in pure forms by reacting dichlorofluoromethane and tetra-fluoroethylene, or chloroform, difluorochloromethane and tetrafluoroethylene in the presence of a catalyst comprising a halogenated zirconium of the formula:    ZrC1xFy                  (I) wherein x and y are numbers which satisfy x + y = 4, 0 < x < 4 and 0 < y < 4.
Patent CA-2061923-A1 (CA)
Title: Contact lenses made from thermoformable material
Inventor: VON DER HAEGEN HARRO M
IPC: G02C7/04
Filed: 1992-02-26
Abstract: Contact lenses made from thermoformable material Abstract The invention relates to contact lenses made from a polymer comprising macrocycles that are made up of units of formula I      --(--CR1=CR2--A--)--                      (I) wherein A is alkylene or alkenylene each having from 3 to 10 carbon atoms and each of which may be substituted by one or more R3 radicals, each of R1 and R2, independently of the other, is hydrogen or lower alkyl, and R3 is lower alkyl, fluorinated lower alkyl or a siloxane radical.   They exhibit a combination of a high degree of hardness and oxygen permeability. They can be produced in an especially advantageous manner, that is to say by hot compression moulding.
Patent CA-2064638-A1 (CA)
Title: Porous fiberglass cast system for the setting of broken appendages
Inventor: CRIPPEN WARREN S
IPC: A61F13/04
Filed: 1992-04-01
Abstract: A  porous  fiberglass  cast  system  for the setting of broken appendages is herein provided.  The present invention uses  a simplified technique involving a standard fiberglass bandage  typical  in  most  cast  systems.  Fastening strips impregnated  with  a curable resin are sewn or woven in rows along the width of one side and down the length of the other side of the unimpregnated fiberglass bandage.  Upon wrapping the  bandage  to  an  injured  member,  the fastening strips overlap  and  produce  a  cross-mesh.   The  nature  of  the fastening   strips  allows  this  cross  mesh  to  initially stabilize  the  structure during cementing.  After curing is complete, the intersecting points of the fastening strips in the  cross  mesh  provide  a rigidified cross-mesh structure strong  enough  to completely immobilize the injured member.          The   areas  contained  in  the  cross-meshing  between  the fastening  strips,  not  being  impregnated with any kind of resin,  retain  their  porosity  once  the  cast  is  cured.          Consequently,  these  areas  become the avenues for moisture evaporation  and  air  circulation, thereby greatly reducing discomfort to the wearer.
Patent CA-2065014-A1 (CA)
Title: 7-7-dimethylnorbornane derivatives
Inventor: YUASA YOSHIFUMI
IPC: C07C47/225
Filed: 1990-08-20
Abstract: The present invention discloses 7,7-dimethylnorbor- nane derivatives useful as intermediates for the production of various synthetic perfumes and high intensity sweeteners.  2R-exo-7,7-Dimethylnorbornyl acetaldehyde, 3-(2R-exo-7,7-dimethylnorbornyl)-2-amino-propionitrile,3-(2R-exo-7,7-dimethylnorbornyl)alanine hydantoin and N-acyl-3-(2R-exo-7,7-dimethylnorbornyl) alanines are disclosed. The present invention describes a process for making 7,7-dimethylnorbornane derivatives, 3-(2R-exo-7,7-dimethylnorbornyl)-L-alanine lower alkyl esters and alpha-L-aspartyl-3-(2R-exo-7,7-dimethylnorbornyl)-L-alanine lower alkyl esters. A process for making alpha-fenchene, a process for making alpha-fenchyl alcohol and a process for making an optically active 3-(2R-exo-7,7-dimethylnorbornyl)-L-alanine or its lower alkyl ester are also disclosed. Dehydration and rearrangement catalysts are also disclosed.
Patent CA-2067015-A1 (CA)
Title: Water-soluble sulfoethyl cellulose ethers of very high solution quality and a process for their production
Inventor: KNIEWSKE REINHARD
IPC: C09K23/00
Filed: 1992-04-24
Abstract: WATER-SOLUBLE SULFOETHYL CELLULOSE ETHERS OF VERY HIGH SOLUTION QUALITY AND A PROCESS FOR THEIR PRODUCTION                    A b s t r a c t The  invention  relates to water-soluble  sulfoethyl cellulose  ethers,  more  particularly  methyl  sulfoethyl cellulose ether (MSEC), of very high solution quality, to a process for its production and to the use of these products as thickeners, dispersants or binders.
Patent CA-2068468-A1 (CA)
Inventor: HOUGHTON MARK P
IPC: C11D17/00
Filed: 1992-05-12
Abstract: The pourability of a substantially non-aqueous liquid deter-gent upon storage at low temperatures may be ascertained by incorporating into it a liquid nonionic surfactant blend essentially consisting of: (a) a narrow range linear chain alkyl ethoxylated alcohol containing an average of from about 5 to 7 ethylene oxide groups per molecule; and (b) an ethoxylated alcohol containing an average of from about 2 to 3 ethylene oxide groups per molecule, the weight ratio between (a) and (b) being in the range of from 9:1 to 1:9, whereby the average chain length ranges from 9 to 14 carbon atoms and the melting point of said blend is lower than 5 °C, preferably lower than 0 °C. This type of non-aqueous liquid detergent is particularly suitable for use in industrial washing machines.
Patent CA-2069783-A1 (CA)
Title: Heat exchanger
Inventor: TOKUTAKE TOSHINORI
IPC: F28F9/04
Filed: 1992-05-28
Abstract: A heat exchanger comprises a main body and at least one header-held members, with the main body having a plu-rality of heat exchanging tubes whose both ends are con-nected to headers in fluid communication with them, wherein the header-held members are selected from a group consisting of a bracket and an external pipe-connecting member which are attached to the header. The header-held members each comprise a header-surrounding portion which is fitted side-ways on and then brazed to the header while remaining self-retained on it, whereby the header-held member can be easily and rigidly secured to the header.
Patent CA-2071878-A1 (CA)
Title: Process for the preparation of 1.alpha.-ethyl-1 -(hydroxymethyl)-1,2,3,4,6,7,12,12ba-octahydro-indolo¬2,3- a|quinolizine and novel intermediates
Inventor: KREIDL JANOS
IPC: C07D/
Filed: 1991-10-30
Abstract: The invention relates to a novel process for the preparation of (-)-1.beta.-ethyl-1.alpha.-(hydroxymethyl)-1,2,3,4,6,7,12,12b.alpha.-octahydr_ o-indolo[2,3-a]quinolizine of formula (I) and to novel intermediates obtained in this process. The compound of formula (I) prepared by the process of the invention possesses a peripheral vasodilator effect.
Patent CA-2072946-A1 (CA)
Title: Rare earth-containing frits having a high glass transition temperature and their use for the production of enamels having improved heat resistance
Inventor: GREBE VERNON J
IPC: C03C8/02
Filed: 1992-07-02
Abstract: Mo3653 RARE EARTH-CONTAINING FRITS HAVING A HIGH GLASS  TRANSITION TEMPERATURE AND THEIR USE FOR THE PRODUCTION OF ENAMELS HAVING IMPROVED HEAT RESISTANCE     ABSTRACT OF THE DISCLOSURE         The present invention is directed to an alkali borosilicate frit which is capable of being applied to a metal substrate by the dry powder electrostatic process at a transfer efficiency of at least 70%, has a glass transition temperature of >525°C and contains, based on the total weight of the frit:                               wherein the total weight of CoO plus NiO is at least 1.           The present invention is also directed to enamels for self-cleaning ovens containing these frits.            Mo3653
Patent CA-2074240-A1 (CA)
Title: Vehicle for carrying coiled rolls
Inventor: PADDOCK MARTIN
IPC: B60P7/12
Filed: 1992-07-20
Abstract: BP F?  No. 6825-001 ABSTRACT OF THE DISCLOSRE                       A trailer assembly designed to transport rolls of rolled material, such as rolls of coiled steel.  The assembly comprises a floor pan, one or more bunks, each of which comprises two opposed inclined members of a size and configuration to hold the roll off the floor pan, two laterally moveable side locks for each of the rolls, a lid enclosure  which  is  hingedly  moveable  frontwardly  or rearwardly between an open and a closed position, the lid when in the closed position forming a tight seal with the floor pan,  and a stand for the lid when in the open position.
Patent CA-2074670-A1 (CA)
Title: Priming system
Inventor: MATKOVICH VLADO I
IPC: B01D19/00
Filed: 1992-07-27
Abstract: ABSTRACT     Processes and systems and methods for priming fluid processing apparatus and for treating a fluid are disclosed.
Patent CA-2077053-A1 (CA)
Title: Cycloolefin purification method
Inventor: VAN DEURSEN JOSEPHUS H
IPC: C07C13/61
Filed: 1992-08-27
Abstract: A B S T R A C T                   CYCLOOLEFIN PURIFICATION METHOD       A process for selectively reducing the 5-isopropenyl-2-nor-bornene content of a dicyclopentadiene composition by contacting a 5-isopropenyl-2-norbornene containing DCPD composition with an acid clay.
Patent CA-2078103-A1 (CA)
Title: Method and apparatus for severing a paper web, particularly a perforated paper web
Inventor: MAEKINEN JUKKA
IPC: B26F3/00
Filed: 1992-09-11
Abstract: This patent publication discloses a method and assembly for severing a perforated continuous form along two lines. According to the invention the paper web is clamped by three clamping elements (6, 11, 15) extending essentially orthogonal over the entire width of the paper web (41 against an anvil plate (1) placed on the opposite side of the paper web so that the perforations (5) of the web remain aligned between said clamping elements (6, 11, 15) and the clamped paper web is tensioned by actuating severing elements (5, 16) placed between said clamping elements (6, 11, 15) to enter anvil grooves (12, 17) made in the anvil plate in order to severe the paper web at the perforation (5) by increased tensional stress. The apparatus implemented according to the invention provides a fast and reliable function.
Patent CA-2079350-A1 (CA)
Inventor: CARMICHAEL KATHLEEN M
IPC: G03G5/04
Filed: 1992-09-24
Abstract: A method of controlling variations in electrical charac-teristics in electrophotographic imaging devices by eliminating the effect of acidic or basic impurities in a photoconductive element.  A solution of a weak acid or weak base and a conjugate salt of the weak acid and the weak base is incorporated into a layer of the photoconductive element.  In a process for producing the photoconductive element, a substrate is coated with a first dispersion to form a charge generating layer, and then coated with a second dispersion to form a charge transporting layer, wherein there is incorporated in at least one of the first and second dispersions a solution of a weak acid or weak base and the conjugate salt of the weak acid and weak base in an amount effec-tive to reduce variations in the dark development potential (VDDP) and background potential (VBG) characteristics of the imaging devices.