baber/WOPTO huggingface dataset:
Patent CA-2008655-C (CA)
Title: Electrophotographic photoreceptor
Inventor: MURASAWA SADAO
IPC: G03G5/08
Filed: 1990-01-26
Granted: 1999-08-17
Abstract: Disclosed is an electrophotographic photo-receptor which is superior in sensitivity to light of longer wavelength region with good stability of the sensitivity and is suitable for formation of high quality color image by scanning exposure with laser beam. This photoreceptor comprises an electroconductive support and, provided thereon, a photosensitive layer containing a titanium dioxide sensitive to light of longer wavelengths which is obtained by treating the surface of titanium dioxide particles with a mineral acid and then supporting on the surface of the particles a cyanine dye sensitizer and a hydrophobic organic compound. The mineral acid is preferably hydrofluoric acid and the hydrophobic organic compound is preferably aromatic or aliphatic organic acid and acid anhydride thereof.
Patent CA-2021361-C (CA)
Title: Quadrature demodulation of a data sequence following a particular signal sequence with a local reference carrier signal having a frequency different from a received carrier signal
Inventor: MUTO HIROYASU
IPC: H04L7/033
Filed: 1990-07-17
Granted: 1994-03-29
Abstract: ABSTRACT OF THE DISCLOSURE    An angular modulated signal is quadrature demodulated (37) into first and second signal vectors by a local carrier signal (36) having a frequency difference from a received carrier signal which is angular modulated by a modulating signal comprising symbols representative of binary one and zero at a symbol interval.  In the modulating signal, a particular symbol sequence comprises the symbols in a predetermined manner and results in the first signal vector.  A data symbol sequence comprises the symbols to represent data and results in the second signal vector. The first signal vector has inphase and quadrature phase amplitudes which are converted (41) to phase values substantially at the symbol interval.  An individual error is provided by comparing (44) a phase variation between two phase values (42 - 43) with a reference variation (45) determined by the predetermined manner.  Such individual errors are averaged (46) into a phase error (47) which is used in correcting (39) the second signal vector.  It is possible to compute the phase error by calculating the phase variation using a reference variation determined by the predetermined manner and the received carrier signal.
Patent CA-2023476-C (CA)
Title: Use of 1-(2-aminoethyl)piperazine to inhibit heat exchanger fouling during the processing of hydrocarbons
Inventor: REID DWIGHT K
IPC: C10L1/232
Filed: 1990-08-16
Granted: 2001-04-17
Abstract: The present invention is directed to an antioxidant material and its use in petroleum and petrochemical processes to reduce and/or control fouling problems specifically as regards hydrocarbons having a bromine number of 10 or less and containing oxygen. The inventive antioxidant material is 1-(2-aminoethyl) piperazine.
Patent CA-2029047-C (CA)
Title: Sustained release compositions for treating periodontal disease
Inventor: DAMANI NALINKANT C
IPC: A61K9/00
Filed: 1990-10-31
Granted: 1995-03-14
Abstract: This invention relates to compositions/devices and methods for treating diseases of the oral  cavity in humans and lower animals   using   polypropenoic   acid   compositions/devices  for releasing drugs in the oral cavity.
Patent CA-2029508-C (CA)
Inventor: LABROT MAXIME
IPC: B23K10/00
Filed: 1990-11-07
Granted: 2000-05-02
Abstract: L'invention concerne une torche à plasma du type comportant : - deux électrodes (5 et 6) tubulaires et coaxiales, en prolongement l'une de l'autre, chaque électrode étant agencée dans un support (3 et 4) ; - des moyens de refroidissement desdites électrodes parcourus par un fluide, lesdits moyens d'au moins une électrode comprenant une chambre cylindrique étanche (16), prévue dans le support correspondant et séparée par une paroi cylindrique partageant la chambre en deux espaces annulaires (16A et 16B) en communication et à travers lesquels circule ledit fluide de refroidissement ; - des moyens (9) pour amorcer un are électrique entre les électrodes ; - des moyens (11,13) pour injecter un gaz plasmagène entre les électrodes ; et, - des moyens à bobine électromagnétique pour déplacer les pieds d'accrochage dudit arc électrique sur les surfaces internes desdites électrodes. Selon l'invention, le fluide de refroidissement de ladite électrode, dont la chambre étanche (16) comporte la paroi de séparation, est électriquement isolant et ladite bobine électromagnétique (15) fait l'office de la paroi de séparation.
Patent CA-2031598-C (CA)
Title: Mobile cellular antenna system
Inventor: BRYANT EVERETTE T
IPC: H01Q1/12
Filed: 1990-12-05
Granted: 1995-07-18
Abstract: A mobile cellular antenna system includes an auxiliary antenna that is coupled to a radiator on the exterior of a vehicle.  This arrangement permits users or portable or transportable cellular telephones with built-in antennas to gain transmission and reception advantage from the exterior antenna while operating from within the passenger compartment.
Patent CA-2033882-C (CA)
Title: Curing compositions
Inventor: RIVIERE JEAN ANDRE ALFRED
IPC: C08F287/00
Filed: 1991-01-09
Granted: 2003-07-08
Abstract: A curing composition obtained by incorporating - a curing agent (1) into - a reaction product (2), being essentially free from carboxy and/or anhydride groups, of i) at least one glycidylether of a polyhydric phenol, and ii) at least one functionalized selectively hydrogenated block copolymer B to which has been grafted carboxy and/or anhydride functional groups said functionalized block copolymer comprising - at least one polymer block C, said C block being predominantly alkenyl arene block, and at least one selectively hydrogenated conjugated diene polymer block D, wherein substantially all of said carboxy and/or anhydride groups are grafted on said C blocks.
Patent CA-2034190-C (CA)
Title: Method of producing colored precipitated calcium carbonate
Inventor: EBINUMA OSAMU
IPC: C09C1/02
Filed: 1991-01-15
Granted: 1998-12-01
Abstract: A colored precipitated calcium carbonate having a strong color fastness in water is produced by preparing an aqueous slurry containing calcium hydroxide and a water-soluble dye, for example, a direct dye, introducing a carbon dioxide-containing gas into the aqueous slurry, and collecting the resultant colored precipitated calcium carbonate from the aqueous slurry at a pH of 8.2 or more thereof.
Patent CA-2035655-C (CA)
Title: Mechanical governor for internal combustion engines
Inventor: HOTZ PETER
IPC: F02D9/02
Filed: 1991-02-04
Granted: 1996-07-30
Abstract: A mechanical speed governor for internal combustion engines includes a centrifugal weight carrier and an arm means that extends through the top side of the upper engine housing.  The arm means moves in response to movement by the centrifugal weight carrier to control the amount of fuel delivered for engine combustion.  The governor arrangement avoids the oil seal and bell crank levers required in prior art devices.
Patent CA-2038122-C (CA)
Title: Adjustable lock infant seat
Inventor: BOUGHER JERRY D
IPC: B60N2/28
Filed: 1991-03-12
Granted: 2000-11-21
Abstract: An adjustable lock infant seat. An infant seat positionable atop an automobile seat, includes a seat belt buckle mounted to the bottom or seat portion of the infant seat. The buckle is lockingly engagable with a tongue slidably mounted to a belt having opposite ends extending through a lower pair of slots or an upper pair of slots extending through the back support of the infant seat. one belt end is fastened to a buckle located on the rearward surface of the back support whereas the opposite belt end extends through a releasably lockable adjuster mounted to the back support. By extending the belt either through the upper or lower slots and by operation of the adjuster, the belt may be sized to fit the infant.
Patent CA-2040829-C (CA)
Title: Method of installing pipes for sprinkler head mounting, and sprinkler head mounting piping arrangement
Inventor: HATTORI TAKAMASA
IPC: A62C35/58
Filed: 1991-04-19
Granted: 1997-02-04
Abstract: A method of installing sprinkler-head mounting pipes for supply of water to sprinkler head mounting pipes for supply of water to sprinkler heads employed for release of water for extinguishing fires, as well as piping arrangements for sprinkler head mounting, are provided herein. In the piping arrangement the joints each have at least two outlet ports. The sprinkler heads are coupled to the outlet ports via flexible pipes. As a consequence, the piping arrangement as a whole is simplified and the required series of piping operations can be easily carried out.
Patent CA-2043841-C (CA)
Title: Large intestinal dissociative hard capsules
Inventor: SUZUKI TSUTOMU
IPC: A61K9/48
Filed: 1991-06-04
Granted: 1997-02-04
Abstract: A large intestinal dissociative hard capsule comprising a capsule mainly composed of chitosan, the viscosity at 20°C of a solution obtained by dissolving the chitosan in an aqueous 1% by weight acetic acid solution being not higher than 100 cps and the degree of deacetilation of the chitosan being from 60 mol% to 98 mol%, having a coated layer of a polymer soluble in a liquid having pH of at least 5 on the surface of the capsule.
Patent CA-2045945-C (CA)
Inventor: MELNICK PAUL J
IPC: H01L23/02
Filed: 1991-06-28
Granted: 1996-07-23
Abstract: A heat-conductive honeycomb ceramic spacer having an array of apertures therein for facilitating assembly of a semiconductor device including a plurality of semiconductor stacks using a low-profile contact comprising a foil with raised portions corresponding to the locations of apertures in the ceramic spacer for forming contacts with the semiconductor stacks when the spacer and the stacks are sandwiched between the foil and another conductive sheet. Use of such a foil also allows disconnection of defective stacks in the device which includes extra stacks to compensate therefore, according to an n - x design philosophy.  Solder preforms may be included on the stacks and enhanced connections made to the foil of conductive sheet by causing reflux of the solder preforms.  The invention may also be applied to multi-layer device constructions.
Patent CA-2049148-C (CA)
Title: He3 solenoid magnetometer
Inventor: COLEGROVE FORREST DONALD
IPC: G01R33/26
Filed: 1991-08-13
Granted: 2000-10-17
Abstract: A magnetometer having an enclosed cell (19) containing He3 therein for receiving light from a light source (5), a light source (3, 5, 11, 15) for directing light to the enclosed cell (19) along a predetermined path, a single pick-up coil containing therein the light source and the enclosed cell (1a), s solenoid containing the pick-up coil therein and a data collection system coupled to the pick-up coil. The light source is a source of circularly polarized light and can comprise a He4 cell and an optical system and a circular polarizer disposed serially between He4 cell and enclosed cell containing He3. The predetermined path of the light source, the enclosed cell and the pick-up coil are disposed along the axis of the solenoid. The light source can also be a laser.
Patent CA-2055882-C (CA)
Title: Binary carry circuitry
Inventor: LEWYN LANNY L
IPC: G06F7/50
Filed: 1991-11-20
Granted: 1999-06-15
Abstract: A first switch (e.g. semi-conductor) becomes conductive when at least one of a pair of binary inputs to be added is a binary "1".  A second switch (e.g. semi-conductor) becomes conductive when there is a carry of a binary "1" from a preceding stage.  The semi-conductors are in series with an output line to provide a particular potential on the output line when the semi-conductors are simultaneously conductive.          This potential is introduced as a binary carry output to a switch in the next stage corresponding to the second switch.          The carry switch in the next stage is an n-channel semi-conductor when the carry switch in the previous stage is a p-channel semi-conductor.  A logical network also produces a signal when both of the binary inputs are a binary "1".  This signal causes a third switch (e.g. semi-conductor) to become conductive and to produce the particular voltage on the output line whether or not the particular voltage is produced on the output line by the operation of the first and second switches.          The voltage on the carry output line is thereafter reset to a second particular value as by a reset signal from a fourth switch (e.g. semi-conductor).  A fifth switch (e.g. semi-conductor) also simultaneously receives a reset voltage to reset the common node between the first and second switches to the particular value.  The first and second switches in the next stage then respectively respond to a binary "1" in at least one of the next pair of binary inputs and to the carry output from the preceding stage in the manner described above.
Patent CA-2059598-C (CA)
Title: Method and apparatus for enhanced scroll stability in a co-rotational scroll
Inventor: UTTER ROBERT E
IPC: F01C21/00
Filed: 1992-01-17
Granted: 1993-10-12
Abstract: Title METHOD AND APPARATUS FOR ENHANCED SCROLL STABILITY IN A CO-ROTATIONAL SCROLL                       Inventors Robert E. Utter Daniel R. Crum Abstract In a co-rotational scroll apparatus having two interleaving scroll wraps secured to end plates rotating about parallel, non-aligned axes to produce a relative orbital motion, a mass secured to at least one of the scrolls for enhancing the nutational stability of the scroll member. Preferably, the nutation reducing means includes a mass affixed to an end plate of the scroll member to induce a dynamic imbalance during rotation of the scroll member, creating a balancing or moderating moment sufficient to compensate for the moment induced by the varying pressure of the fluids in the various compression chambers during the rotation of the scroll member.
Patent CA-2068382-C (CA)
Title: Superconductor magnetic shield
Inventor: SUGIOKA TAKAO
IPC: H05K9/00
Filed: 1992-05-11
Granted: 2003-07-29
Abstract: A large-area superconductor magnetic shield comprising a plurality of small superconductor unit layers stuck onto the surface of a large-area substrate, wherein the external peripheral sections of the adjacent unit layers are overlapped mutually or the end sections of the adjacent unit layers are abutted mutually such that the adjacent unit layers do not make contact with one another. Compared with conventional magnetic shields, the magnetic shielding amount at the overlapping sections of the magnetic shield of the present invention is substantially greater.
Patent CA-2071070-C (CA)
Title: Process for the preparation of oligomeric polyisocyanates and their use
Inventor: SCHOLL HANS-JOACHIM
IPC: C07D251/34
Filed: 1992-06-11
Granted: 2003-08-26
Abstract: The present invention relates to a process for the preparation of oligomeric polyisocyanates in which (a) a portion of the isocyanate groups of organic poly-isocyanates is oligomerized in the presence of catalysts that accelerate the dimerization of isocyanate groups, and (b) the oligomerization reaction is terminated after reaction of about 5 to about 45% of the isocyanate groups present in said organic polyisocyanates by the addition of a catalyst poison comprising a silylated acid corresponding to the formula X-[Si(CN3)3]n wherein X represents the neutral acid residue obtained by removal of the acidic hydrogen atoms from an n-basic acid having a pK a value of at most 3, other than a hydrohalic acid, and n is an integer of 1 to 3.        The invention also relates to the use of oligomeric polyiso-cyanates obtained by this process, optionally in admixture with unreacted starting polyisocyanates and/or optionally with the isocyanate groups blocked by blocking agents, as polyisocyanate component for the preparation of polyurethane resins by the isocyanate polyaddition process.
Patent CA-2072972-C (CA)
Inventor: BODIN STIG ROLAND
IPC: H04B7/005
Filed: 1991-09-09
Granted: 2001-02-20
Abstract: Méthode permettant de réguler, dans un système de radiocommunications mobile cellulaire, la puissance de sortie de signaux radio transmis par un émetteur à un récepteur se trouvant dans la même cellule que l'émetteur. La méthode se distingue par le fait qu'elle régule la puissance de sortie (Ps) de l'émetteur en fonction d'un paramètre, qui est caractéristique de la distance (D) entre l'émetteur et le récepteur, pour suivre approximativement, à partir d'une puissance de sortie maximale (Psmax) prédéterminée qui est transmise quand la distance entre l'émetteur et le récepteur est maximale à l'intérieur de la cellule, une première fonction (a, b) de décroissance monotone qui diminue avec la distance et approche une puissance de sortie minimale prédéterminée (Psmin) quand la distance s'approche de zéro, de sorte que la puissance (Ps) des signaux radio transmis tels qu'ils sont reçus par le récepteur avec une puissance reçue minimale (Prmin), qui est reçue quand la distance entre l'émetteur et le récepteur est maximale à l'intérieur de la cellule, suit approximativement une seconde fonction monotone de croissance quand la distance diminue et s'approche d'une puissance reçue maximale (Prmax) au fur et à mesure que la distance tend vers zéro.
Patent CA-2077054-C (CA)
Title: Fabric reinforced stiffener for air springs
Inventor: LEAKEY MICHAEL E
IPC: F16F9/04
Filed: 1992-08-27
Granted: 1999-02-02
Abstract: An air spring has a pair of axially spaced end members and an intervening bellows.   The bellows includes inner and outer elastomeric body plies, each containing cords biased at generally opposite angles with respect to each other,  such as 34 1/2°.   A pair of reinforcing strips of elastomeric coated cords are located between the inner and outer body plys. The cords of the reinforcing strips are biased in opposite directions with respect to each other and in opposite directions with respect to the cords of the body plies  adjacent thereto.   Furthermore,  the  cords  of  the reinforcing strips are between 2° and 6° less than the bias angles of the body ply cords.  The reinforcing strips extend from adjacent the peripheral sealing edge of one of the end members a distance of between 2 inches and 6 inches,  or generally less than one-fourth the axial separation of the end members, and stiffens the one end of the bellows to prevent the bellows from rolling over the peripheral edge of the one end member.
Patent CA-2077840-C (CA)
Title: Sausage encasing machine having an improved looper horn
Inventor: BASILE VINCENT L II
IPC: A22C11/08
Filed: 1992-09-09
Granted: 1998-01-06
Abstract: A sausage encasing machine (10) has an improved looper horn (56) thereon mounted to be in communication with the horizontal flow path of encased linked sausages being discharged from the machine.  The looper horn (56) is mounted on a looper horn adapter (36) which rotatably secures the horn for rotation with respect to the  machine about a rotational axis (39) that extend  downwardly from the looper horn adapter (36). The looper horn (56) is connected to a suitable source of rotational power (via 40).  The geometry of the adapter (36) and the looper horn (56) causes the horn (56) to be rotated from a substantially horizontal position of  maximum elevation through a circular continuous arc which is located below the position of  maximum elevation whereby the strand (90) will never have to be moved in an upwardly inclined direction as it passes through the looper horn (56).  The looper horn (56) is U-shaped in cross section and thereupon has an elongated side opening (70) having a discharge axis (74).  The discharge axis (74) is in a lateral direction when the looper horn (56) is in its position of maximum  elevation.  The discharge axis (74) then rotates downwardly as the looper horn (56) moves downwardly on the continuous arc from the position of maximum elevation.
Patent CA-2083621-C (CA)
Title: Process for the preparation of poly-beta-hydroxybutyric acid polymers
Inventor: GROLEAU DENIS
IPC: C12P7/62
Filed: 1992-11-24
Granted: 2000-06-20
Abstract: the present invention relates to a type of polymer comprising repeating units of formula   and in particular to a poly-.beta.-hydroxybutyrate polyester type polymer. The present invention also relates to a microbiological process for the production of the above type of polymer, to a methylotrophic microorganism (bacterium) for use in such a process, and to means for controlling such bioprocesses.
Patent CA-2089208-C (CA)
Inventor: CAHUZAC GEORGES
IPC: D04H3/07
Filed: 1993-02-10
Granted: 2002-11-05
Abstract: - Procédé pour la réalisation d'une armature fibreuse (1) pour une pièce de matière composite comportant au moins deux parois non coplanaires, par exemple orthogo-nales. - Selon l'invention, au moins un premier élément fibreux (2) est réalisé en un matelas de fibres ; ledit premier élément fibreux (2) est appliqué par un de ses chants (4) contre une première face (5) d'un second élément ; et l'on introduit, à travers une seconde face (7) dudit second élément (3), opposée à ladite première face (5), et par piquage sans nouage d'un fil continu (F) à l'aide d'une aiguille, des fibres transversales traversant ledit second élément (3). - Réalisation de pièces composites fibres-matrice.
Patent CA-2089789-C (CA)
Title: Method and apparatus for optimum path selection in packet transmission networks
Inventor: AHMADI HAMID
IPC: H04L12/56
Filed: 1993-02-18
Granted: 1997-01-21
Abstract: A packet communications system utilizes a route determining mechanism by identifying principal paths between the source and the destination in the system. Principal paths are minimum hop count paths with a transmission delay less than a specified threshold. Principal path links are accepted as legs of the optimum path, if feasible, i.e., if the resulting load on the link is less than a specified principal threshold. Secondary links are accepted only if the resulting load on the link is less than a specified secondary threshold, where the secondary threshold is less than the principal threshold. All paths must also have a transmission delay less than a specified threshold. Each request for a route includes the source node, the destination node, the load required, the maximum transmission delay and, if desired, the quality of service parameters which all of the legs of the route must satisfy. A modified Bellman-Ford breadth-first searchalgorithm is used to identify the principal links and, using these principal link identifications, determining the optimum path.
Patent CA-2093663-C (CA)
Title: Device for intratracheal and intratracheal pulmonary ventilation
Inventor: KOLOBOW THEODOR
IPC: A61M16/00
Filed: 1991-10-31
Granted: 1996-09-03
Abstract: A method and apparatus for intratracheal ventilation (ITV) and intratracheal pulmonary ventilation (ITPV) in which a catheter (1) positioned in a patient's trachea at the carina (6) supplies a constant supply of fresh oxygen containing gas (13, 14, 15) to flush anatomical dead space. By positioning the catheter (1) in the patient's trachea, the dead space of the trachea is by-passed and the trachea is only utilized for expiration. By providing a timed expiratory valve (9) in the ITPV mode, lower pres-sures and fresh oxygen flow rates may be utilized with respiratory rates from 10 to 120/min. or higher.
Patent CA-2106588-C (CA)
Title: Filtering device for fluids to be purified
Inventor: BACHER HELMUT
IPC: B29C48/03
Filed: 1992-03-19
Granted: 1995-08-01
Abstract: A filtering device for thermoplastic synthetic material has a filter support with at least one filter longitudinally movable in a casing.  In the flushing position of the filter support, this filter is in communication with a flushing channel for back-flushing purposes.  In order to make the rinsing process rapid, effective and uniformly distributed over the surface of the filter and to prevent additional loss of mass in the mainstream during back-flushing, there is a reservoir in the filter support which is filled with clean molten material during normal operation and in which a piston can move by means of which the molten material in the reservoir is forced through the filter and into the flushing channel in the back-flushing direction.