baber/WOPTO huggingface dataset:
Patent CA-2019946-C (CA)
Title: Temporary disintegratable plug for an open-ended oil pipeline
Inventor: SAVARD DONALD D
IPC: F16L55/11
Filed: 1990-06-27
Granted: 1996-11-12
Abstract: The plug is formed of fibrous material held together by a wax binder in the form of a cylindrical body.  The body is adapted to fit closely into the bore of an open-ended pipeline.          The body has a reduced diameter inner end portion.  A thick band of asphalt-base sealant is applied to the inner surface of the pipe at the location to be taken up by the reduced diameter portion.   The vertical inner end surface of the plug is also coated with the sealant.   When the plug is inserted into the line,  its close fit holds it in place and the sealant seals across  the  bore.    The  plug  functions  to  isolate  residual hydrocarbon vapours in the line while a new section of pipe is tied  in.    The  plug  disintegrates  when  contacted with  the subsequent oil flow.
Patent CA-2020812-C (CA)
Title: Liquid suspensions of nitrofurantoin
Inventor: MCGOWAN MARGARET ANNE
IPC: A61K9/00
Filed: 1990-07-10
Granted: 1995-08-01
Abstract: Compositions, for the administration of nitrofurantoin to a human or other animal subject, comprising: (a) a safe and effective amount of nitrofurantoin particulates having a surface consisting of nitrofurantoin monohydrate, wherein said particulates have a mean particle size greater than about 200 mesh size; (b) nitrofurantoin monohydrate; (c) an effective amount of a suspending agent; and (d) water; wherein the pH of said composition is from about 1 to about 6; and said nitrofurantoin monohydrate is dissolved in said water at saturation level. The nitrofurantoin of this invention are highly efficacious for the oral delivery of nitrofurantoin.
Patent CA-2021384-C (CA)
Title: Transparent toughened thermoplastics
Inventor: THOMPSON RONALD J
IPC: C08L51/00
Filed: 1990-07-17
Granted: 2001-12-04
Abstract: Tough transparent thermoplastics blends may be prepared by blending 10 to 99 weight percent of a block copolymer; 0.1 to 1 weight percent of particulate rubber having a particle size from 0.1 to 10 microns; and the balance a clear glassy polymer. These clear polymers are useful in a number of applications, particularly for those applications requiring quite high toughness and transparency such as packaging, containers or protective covering.
Patent CA-2025192-C (CA)
Title: Current fed push pull power converter
Inventor: WELLS MARK R
IPC: H02M3/337
Filed: 1990-09-12
Granted: 1994-03-15
Abstract: CURRENT FED PUSH PULL POWER CONVERTER            Abstract of the Disclosure A power converter is provided with a split primary current fed push pull topology  An inductor connects the primary windings. Controllable switches provide alternate circuits from the dc source inputs through each of the primary windings and the inductor. Clamping diodes connect the ends of the inductor to the dc source inputs opposite to those provided by the controllable switches.  The clamping makes cross conduction unnecessary.  Separate duty cycle control is provided in each primary circuit.                             - i -
Patent CA-2028235-C (CA)
Title: Condensed purine derivatives
Inventor: SUZUKI FUMIO
IPC: A61P13/00
Filed: 1990-10-19
Granted: 1997-01-21
Abstract: There are disclosed condensed purine derivatives represented by formula:       wherein    represents                  ,         or                  in which R3 represents hydrogen, lower alkyl or benzyl;  each of X1 and X independently represents hydrogen, lower alkyl, aralkyl or phenyl;  and n is an integer of 0 or 1;  R1 represents hydrogen, lower alkyl, alicyclic alkyl, noradamantan-3-yl, dicyclopropylmethyl or styryl;  and R represents hydrogen, lower alkyl or alicyclic alkyl;  or a pharmaceutically acceptable salt thereof.   The derivatives and pharmaceutically acceptable salts are useful as diuretics, renal protecting agents, antiallergic agents and hypotensives.
Patent CA-2030937-C (CA)
Title: Automatic function selecting multimeter
Inventor: GEORGE RICHARD E
IPC: G01R15/08
Filed: 1990-11-27
Granted: 1994-02-08
Abstract: AUTOMATIC FUNCTION SELECTING MULTIMETER                 ABSTRACT OF THE DISCLOSURE      Disclosed  is  a  digital multimeter  having  an automatic  function selection capability.   The device includes a sensing circuit connected to its input to respond to the type of analog signal which is sensed and to provide logic signals which are characteristic thereof.  These logic signals may be utilized to cause generation of encoding signals to encode and dispose the converter circuit to perform the desired conversion function and provide the desired display as a function of  the  analog  input.   The  device may  include  an internal reference signal source such as a DC reference potential  and  the  sensing  circuit  may  sense  a differential  between  such reference  source  and  the: external  analog  signal  to make a  determination  to utilize or disconnect the reference signal source in performing the function dictated by the nature of the analog signal.
Patent CA-2040180-C (CA)
Title: Enzymatic process for the determination of beta-lactam antibiotics
Inventor: DEGELAEN JACQUES
IPC: C12R1/03
Filed: 1991-04-10
Granted: 2001-06-19
Abstract: An enzymatic process for the determination of .beta.-lactam antibiotics in a biological liquid, comprising the steps of (1) incubating the liquid with soluble D-alanyl-D-alanine-carboxypeptidase produced by Actinomadura R39, the .beta.-lactam antibiotic reacting with the enzyme to form an inactive and equimolecular enzyme-antibiotic complex; (2) incubating the mixture obtained with a solution of a thioester substrate having the formula   wherein R1 = benzoyl, phenylacetyl or N .alpha.-acetyl-L-lysyl, R2 = glycyl or D-alanyl, and R3 = hydrogen or methyl so as to form, by hydrolysis, a 2-mercaptoalkanoic acid having the formula   in an amount proportional to the residual enzymatic activity, said incubation being further conducted in the presence of glycine ar of a D-amino acid; (3) determining the amount of 2-mercaptoalkanoic acid formed, and (4) comparing the determination of step (3) with a standard, to obtain the antibiotic concentration in the biological liquid.      A test set for carrying out this process is also disclosed.
Patent CA-2043507-C (CA)
Title: Portable device for sensing cardiac function and automatically delivering electrical therapy
Inventor: HEILMAN MARLIN S
IPC: A61N1/39
Filed: 1991-05-29
Granted: 1998-04-14
Abstract: A patient-worn harness or vest protects at-risk patients from the possibly fatal results of heart arrhythmias.  The harness or vest  incorporates  sensing  electrodes  for  monitoring  heart condition,  a microprocessor and memory for processing signals received  from the sending electrodes and comparing same with patient's data, and skin-contacting pulsing electrodes for applying electrical pulses to the patient's chest wall responsive to signals received from the microprocessor.  The electrodes include automatic tightening and electrolyte gel release  mechanisms for reducing impedance at the electrode-skin interface.  A servicing subsystem is provided for the harness or vest and may be used to interface with the harness or vest and may be used to interface with the harness or vest and also to communicate with remote health care personnel through a suitable telephone link.
Patent CA-2044163-C (CA)
Title: Flower pot or flower pot cover with controlled pleats
Inventor: WEDER DONALD E
IPC: A01G9/02
Filed: 1990-10-16
Granted: 1996-06-18
Abstract: A flower pot, a flower pot cover, an apparatus for forming flower pots or pot covers, and a method for forming, flower pots or flower pot covers (14) from sheet material (12). The apparatus comprising means (104, 106, 114) for engaging the portions (147) of the sheet material (12) and forming pleats (147) in predetermined portions of the sheet of material having a predetermined shape whereby the formed flower pot or flower pot cover has pleats in predetermined portions and of predetermined shapes.
Patent CA-2046239-C (CA)
Title: Catalyst for the polymerization of alpha-olefins containing trifluoro-propyl substituted silane compounds
Inventor: SMITH CRYSTAL A
IPC: C08F110/00
Filed: 1991-07-04
Granted: 1996-01-30
Abstract: Disclosed are catalysts for the polymerization of alpha-olefins comprising the reaction product of:     (A)  an Al-alkyl compound; (B)  a trifluoropropyl substituted silane compound; (C)  a solid component comprising a titanium compound having at least a Ti-halogen bond and an electron donor compound both supported on an activated anhydrous magnesium dihalide, and the process of using said catalysts.
Patent CA-2047343-C (CA)
Inventor: GUERET JEAN-LOUIS H
IPC: A61Q1/00
Filed: 1991-07-18
Granted: 2001-09-04
Abstract: Selon ce procédé, on mélange à un produit non-thermoplastique particulaire 5 à 80 % d'un produit thermoplastique pulvérulent et on soumet le mélange à l'action d'ultra-sons pendant que l'on exerce sur celui-ci la pression de compactage.  On obtient des produits compactés ayant des propriétés et des structures différentes selon la nature des produits thermoplastique et non- thermoplastique utilisés et suivant la disposition du mélange en une couche homogène ou en plusieurs couches de compositions différentes.
Patent CA-2047949-C (CA)
Title: Dual-ring atm communications system
Inventor: TSUTSUI TAKASHI
IPC: H04L12/70
Filed: 1991-07-26
Granted: 1994-09-20
Abstract: ABSTRACT OF THE DISCLOSURE     An ATM communications system has two ring transmission lines in which network nodes are connected for transmission of cells in opposite directions. Each cell contains a first identifier identifying one of the rings and a second identifier identifying a path between source and destination nodes. Each node comprises two subsystems one for each ring transmission lines. Each subsystem includes a multiplexer for fording a cell to a first segment of the associated ring and a cell detector for examining the identifiers of a cell from a second segment of the ring to determine its destination. A demultiplexer is normally connected to the second segment of the associated ring for terminating a cell received therefrom or passing it on to the multiplexer depending on the destination determined by the cell detector. A fault on the second segment of the associated ring is detected by a fault detector. In response to the detection of a fault by the fault detector, a connection is established from the multiplexer of the other subsystem to the demultiplexer of the own subsystem, and the latter is disconnected from the second segment of the associated ring.
Patent CA-2047977-C (CA)
Title: Air gap controlling system for linear motor
Inventor: KOBAYASHI NOBORU
IPC: B60L13/06
Filed: 1991-07-26
Granted: 1994-07-26
Abstract: ABSTRACT OF THE DISCLOSURE       An air gap controlling system for a linear motor wherein a comparatively small air gap can be assured between a truck-carried element and a ground-mounted element to assure a high efficiency of the linear motor and construction for driving such ground-mounted element is simplified.  Driving means is provided on each truck for driving a truck-carried element of a linear motor to be displaced upwardly or downwardly to adjust an air gap between the truck-carried element and an opposing ground-mounted element which also constitutes the linear motor. and an aimed value of the air gap between the two elements is set in response to a running speed of a velocity of the truck and a truck position signal representative of a position of the truck.  At the first truck, the driving means is controlled so that the air gap may be equal to the air gap instruction value which is a rather high value.  An air gap aimed value is set similarly for each of the trucks succeeding to the first truck, but is corrected so that an air gap of a succeeding truck may be controlled to a low value so as to assure a high efficiency of the linear motor.
Patent CA-2048107-C (CA)
Inventor: INADA TOMOHIDE
IPC: H04N9/31
Filed: 1991-07-30
Granted: 1994-06-07
Abstract: ABSTRACT OF THE DISCLOSURE A liquid crystal color projection apparatus includes a light source, dichroic mirrors, transmission type liquid crystal panels, a beam mixing section, two parallel side plates, and bar members.  The dichroic mirrors separate light, supplied from the light source, into red, green, and blue beams.  The transmission type liquid crystal panels are respectively arranged on the optical paths of the three color beams separated by the dichroic mirrors so as to form images corresponding to the three color beams.  The beam mixing section mixes image beams from the transmission liquid crystal panels to reproduce a color image.  The side plates have plural pairs of engaging portions, arranged at symmetrical positions, for fixing the dichroic mirrors and the liquid crystal panels at predetermined positions.  Each of the bar members has two end portions fixed to one pair of engaging portions of the side plates, thus fixing and holding two arbitrary end portions of each of the dichroic mirrors and the liquid crystal panels thereon.
Patent CA-2051740-C (CA)
Title: Electronic assembly for restricting animals to defined areas
Inventor: WEINSTEIN LEE D
IPC: A01K15/04
Filed: 1991-09-18
Granted: 1994-01-11
Abstract: ABSTRACT An animal restraining system includes a radio frequency transmitter adapted to be located adjacent an area in which the animal is to be restrained, a transmitting antenna, and a collar unit worn by the animal.   The collar unit has a multiplicity of radio signal receivers each having a highly directional receiving antenna with the receiving antennae of the multiplicity of receivers having their axes of maximum sensitivity oriented in different directions, and an analyzer for determining a composite of the field strengths of the radio  signals  received by  the  receiving antennae,  and detecting when the composite field strength at the receiving antennae falls below predetermined values.  When the detected composite field strength falls below a first predetermined value, a first warning signal is generated to the animal, and a second and different warning signal is generated when the composite field strength falls below a second predetermined value.
Patent CA-2053359-C (CA)
Title: Heteroaroyl derivatives of monocyclic beta-lactam antibiotics
Inventor: KOSTER WILLIAM H
IPC: C07D491/056
Filed: 1991-10-11
Granted: 2004-01-13
Abstract: Antibacterial activity is exhibited by novel compounds having the formula (see formula I)
Patent CA-2054730-C (CA)
Inventor: DEWITTE MARC
IPC: B29D30/38
Filed: 1990-07-17
Granted: 1995-08-01
Abstract: The invention relates to a substrate for reinforcing elastomeric polymers whereby at least part of the substrate is made of steel, said part being covered by a layer of an alloy consisting of, apart from impurities, between 4.2 and 6.5 % weight of aluminium, possibly less than 0.1 % of at least one element stimulating the wetting ability of the liquid alloy to the substrate and the balance zinc.
Patent CA-2056177-C (CA)
Title: Plastic-clad silica(pcs) fibers and methods and apparatuses for producing the same
Inventor: SHIMADA KATSUHIKO
IPC: G02B6/00
Filed: 1991-11-26
Granted: 1997-03-25
Abstract: A method and apparatus for producing a polymer-clad silica (PCS) optical fiber comprising a core of a transparent inorganic glass and a cladding of a transparent organic polymer characterized in that the amount of volatile components in its cladding is not more than 1 wt%, which method and apparatus comprise forming the core fiber, forming the cladding around the core fiber, and treating the cladding with a far infrared heater.
Patent CA-2058317-C (CA)
Title: Motor-driven positioning system with reflective optical encoder
Inventor: DOLAN DONALD T
IPC: G05B19/23
Filed: 1991-12-23
Granted: 1997-01-28
Abstract: A low cost, high resolution optical encoder for a brush-less DC motor comprises reflective sensors, and a movable disk cooperating with a stationary pattern to provide a pattern of reflective and non-reflective areas for the sensors that can be used to generate motor positional information as well as commuta-tion drive signals.
Patent CA-2059908-C (CA)
Title: Process for the preparation of racemic and optically active 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid and its precursors
Inventor: KAMMERMEIER BERNHARD
IPC: C07D217/26
Filed: 1992-01-23
Granted: 2002-09-10
Abstract: A process for the preparation of racemic and optically active 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid is described, in which dihalo-o-xylylenes are cyclized to dicarboxylic acid esters in basic medium using dialkyl N-acylamidomalonates of the formula (CO2R1)2CHNHCOR2, in which R1 is (C1-C4)-alkyl and R2 is H, (C1-C4)-alkyl or (C6-C12)-aryl, decarboxylated by basic hydrolysis and subsequent acid work-up and then reacted in acid medium to give (D,L)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid, or dihalo-o-xylylenes are cyclized in basic medium to give the dicarboxylic acid esters and these are reacted directly without isolation in a one-pot process to give (D,L)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid, if desired the racemic 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid is reacted with (-)menthol and p-toluenesulfonic acid to give (-)menthyl (D)- or (L)-1,2,3,4-tetrahydroisoquinoline-3-carboxylate, then the diastereomers are separated by column chromatography and subjected to basic hydrolysis to give (D)- or (L)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid, or (D,L)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid is esterified by means of benzyl alcohol and p-toluenesulfonic acid, reacted with D(-)mandelic acid to give benzyl (D)-1,2,3,4-tetrahydroisoquinoline-3-carboxylate (D)-mandelate and benzyl (L)-1,2,3,4-tetrahydroisoquinoline-3-carboxylate (D)-mandelate or with L(+)mandelic acid to give benzyl (D)-1,2,3,4-tetrahydroisoquinoline-3-carboxylate (L)-mandelate and benzyl (L)-1,2,3,4-tetrahydroisoquinoline-3-carboxylate (L)-mandelate and then the compounds obtained are separated into the optical antipodes by fractional crystallization in an inert solvent and the enantiomers (D)- or (L)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid are liberated by basic hydrolysis, the chiral auxiliary reagent being recovered.
Patent CA-2062155-C (CA)
Title: Adaptive quantization within the jpeg sequential mode
Inventor: PENNEBAKER WILLIAM B
IPC: H04N19/593
Filed: 1992-03-02
Granted: 1998-04-28
Abstract: A system and method for masking adaptive quantization during compressed image data transmission by defining a scaling  factor  for  the  quantization  tables  of  the multiple  image components,  wherein  the  scaling factor signals changes in quantization for successive blocks of the image data.  The scaling factor is transmitted as a further component together with the image components to thereby signal adaptive quantization of the image data.
Patent CA-2069482-C (CA)
Title: Modified native starch base binder for pelletizing mineral material
Inventor: DINGEMAN DAVID L
IPC: C22B1/244
Filed: 1990-09-26
Granted: 2004-06-01
Abstract: A binder for pelletizing particulate mineral material. The binder including about 30-99.5 % modified native starch, and about 0.2:80 % of water-dispersible polymer material selected from the group consisting of water-dispersible natural gums, water-dispersible pectins, water-dispersible starch derivatives, water-dispersible cellulose derivatives; water-dispersible vinyl polymers, water-dispersible acrylic polymers and mixtures thereof: Alternate embodiments include from about 0.5-50 % lignosulfonates and/or about 0.2-40 % soda ash. Mineral ore concentrate is also disclosed as are mineral ore and iron ore pellets. In addition, methods of binding particulate mineral material and of making mineral ore pellets are also disclosed.
Patent CA-2069654-C (CA)
Inventor: HAYWARD CHRISTOPHER F
IPC: C07K1/02
Filed: 1992-05-27
Granted: 2003-07-01
Abstract: A process for the solid phase synthesis of peptides containing an aza-amino acid, for example the decapeptide goserelin, which comprises (i) assembling all the amino acids of the peptide except the C-terminal aza-amino acid by conventional solid phase synthesis; (ii) cleaving the peptide from the support with hydrazine or a substituted hydrazine; and (iii) reacting the hydrazide thus released with a cyanate ion.
Patent CA-2071545-C (CA)
Title: Method and apparatus for producing metal bars
Inventor: MATSUO GIICHI
IPC: B21B1/08
Filed: 1991-09-21
Granted: 1996-01-30
Abstract: N strands of metal bars are simultaneously produced by subjecting a preformed billet rolled by a roughing rolling train of a bar rolling mill to a finishing rolling; rolling N pieces of strands connected to each other by means of thin connecting portions; then cutting off both the outer strands along the thin connecting portions by means of a pair of slit rolls; subsequently cutting off both the outer strands out of a plurality of strands not yet cut off at an intermediate portion of the strands along the thin connecting portions by means of a pair of slit rolls; further cutting off all the strands by repeating the cutting of the strands along the thin connecting portions thereof; and producing simultaneously N strands of metal bars by simultaneously rolling the cut strands.
Patent CA-2071837-C (CA)
Title: Vitamin-mineral treatment methods and compositions
Inventor: DEIHL JOSEPH A
IPC: A61K9/00
Filed: 1990-10-16
Granted: 2001-01-02
Abstract: A new use is provided for a particularly specified spray composition. Such spray composition includes at least one of a soluble vitamin, (e.g., Vitamin C) and a soluble mineral, and a non-toxic zinc compound as an essential active agent, as well as, optionally, a soluble flavouring agent, and a non-toxic solvent for the soluble vitamin or for the soluble mineral, or for the optional flavouring agent. Such new use is for introducing at least one of a soluble vitamin and a soluble mineral as well as the non-toxic zinc compound, into an animal through the oral cavity. Methods of preparing such spray compositions for such use are also provided.
Patent CA-2073825-C (CA)
Title: Method for catalytic cracking of petroleum hydrocarbons
Inventor: IWAMATSU EIJI
IPC: B01J21/12
Filed: 1992-07-14
Granted: 1997-01-14
Abstract: Middle distillates can be produced efficiently in high yields by catalytically cracking petroleum hydrocarbons by contacting the petroleum hydrocarbons at cracking conditions with a catalyst composition comprising a cation-exchanged stevensite.
Patent CA-2075158-C (CA)
Inventor: VAN ARDENNE JOHANNA LAMBERTA M
IPC: B42B5/06
Filed: 1992-07-31
Granted: 2000-03-28
Abstract: Clip for holding and/or keeping together sheets of paper  or other materials,  comprising two holding elements lying essentially in parallel planes and spring-ing relative to each other, and of which the two end edges run parallel at a distance from each other or at an angle relative to each other, and form push-on edges when in use.  According to the invention,  the two holding elements are in the form of holding legs (1, 2) of sheet-type material, and one (2) of said holding legs is bent in such a way that a part (4, 6) adjacent to the connect-ing line (3) with the other leg (1) lies at a distance from said other leg, and a second part (8), essentially ending at the push-on edge (13),  lies with at least a part of  its  inside essentially  flat and resiliently against the inside of a part (9) of the other holding leg (1). The clip can also be placed on other objects of different types (Figure 2).