baber/WOPTO huggingface dataset:
Patent CA-2245935-A1 (CA)
Title: Method of creating and searching a molecular virtual library using validated molecular structure descriptors
Inventor: CRAMER RICHARD D
IPC: G16C20/62
Filed: 1997-01-27
Abstract: The problem of how to select out of a large chemically accessible universe molecules representative of the diversity of that universe is resolved by the discovery of a method to validate molecular structural descriptors. Using the validated descriptors, optimally diverse subsets (5) can be selected. In addition, from the universe, molecules with characteristics similar to a selected molecule can be identified (3). The validated descriptors also enable the generation of a huge virtual library of potential product molecules which could be formed by combinatorial arrangement of structural variations and cores. In this virtual library it is possible to search billions of possible product compounds in relatively short time frames.
Patent CA-2246160-A1 (CA)
Inventor: GREENLEE DENNIS M
IPC: B03D1/16
Filed: 1998-08-28
Abstract: Excessive vibration in industrial mixers such as flotation cells and draft tube mixers is attenuated by connecting a vibration dampening device to a rotor or impeller which is disposed in a mixing tank for pumping a nonhomogeneous fluidic material placed in the tank. In a draft tube mixer, where the rotor is connected to a drive shaft in turn connected to a motor for rotating the rotor, the vibration dampening device is connected to the shaft on a side of the rotor opposite the motor. In a froth flotation cell, if the rotor is hollow, the vibration dampening device is disposed inside a pipe in turn mounted inside the rotor along an axis thereof. The vibration dampening device takes the form of a tuned mass dampener tuned to a resonance frequency of the particular mixing apparatus.
Patent CA-2251406-A1 (CA)
Inventor: NEMER JOSEPH C
IPC: H04L27/152
Filed: 1998-10-26
Abstract: A FSK demodulator which uses  the  combination of  a digital   phase   comparator  and  a   digital   controlled oscillator  (DCO)  in  the  form  of  a  state  machine  to demodulate an FSK signal.   The phase comparator compares the phase of the FSK signal with the output of the DCO to provide a signal to the DCO having a level dependent on the  phase  relationship  between  the  two  signals  at  the input to the comparator.   The demodulator also includes a filter to obtain the data from the signal at the output of the comparator.
Patent CA-2252101-A1 (CA)
Inventor: BOTTOMLEY GREGORY EDWARD
IPC: H04L27/01
Filed: 1997-04-14
Abstract: Receivers and methods for receiving transmitted symbols are disclosed in which techniques are applied to jointly combat fading, time dispersion, and interference that is correlated in both space and time. These objects are accomplished by, for example, providing an inverse impairment correlation sequence estimate to the branch metric processor in addition to a channel estimate. The branch metric processor can then use this additional information to provide branch metrics that take into account the time correlation of impairment to improve the symbol hypotheses.
Patent CA-2254156-A1 (CA)
Inventor: ROGER CHRISTIAN MARIE MICHEL
IPC: G01L5/12
Filed: 1998-11-13
Abstract: Afin de mesurer la poussée axiale (4) exercée sur un arbre tournant (1), l'invention propose de disposer sur cet arbre (1) une structure sandwich composée d'une rondelle élastique (15) flanquée de deux flasques (14,16), ladite rondelle (15) étant soumise à ladite poussée axiale (4), lesdits flasques (14, 16) coopérant avec deux sondes de mesure de déplacement (17, 18) solidaires de la structure fixe (3) de la machine. Application non exclusive à la mesure de la poussée des rotors de turbomachine.
Patent CA-2255763-A1 (CA)
Inventor: BADER JOEL S
IPC: G01N24/08
Filed: 1997-05-12
Abstract: This invention includes methods for analyzing data generated by various solid-state NMR experiments, including rotational echo double resonance (REDOR), transferred echo double resonance (TEDOR), dipolar recoupling at the magic angle (DRAMA), dipolar recoupling with a windowless sequence (DRAWS), and melding of spin-locking and DRAMA (MELODRAMA). The methods are based alternately on a new analytical transform or the maximum entropy method and their multidimensional extensions. They permit simultaneous, multiple distance measurements of high accuracy and precision, even from nuclei with identical chemical shifts. By providing high quality easily obtained distance measurement from disordered solid state materials, this invention also improves drug discovery and design through fast determination of structures of pharmaceutical lead compounds, drug molecules, or their targets.
Patent CA-2260281-A1 (CA)
Title: A wireless telecommunications system architecture supporting receive diversity
Inventor: ZAPPALA CHRISTOPHER F
IPC: H04W16/24
Filed: 1999-01-25
Abstract: A technique for achieving receive diversity without multiple antennas per cell is disclosed. An illustrative embodiment of the present invention comprises: a first antenna for receiving a first information-bearing signal at a first radio frequency; a first downconverter for downconverting the first information-bearing signal to a first intermediate frequency; a first transmitter for transmitting the first information-bearing signal at the first intermediate frequency over a first wireline; means for receiving the first information-bearing signal at the first intermediate frequency from the first wireline and for demodulating the first information-bearing signal.
Patent CA-2262647-A1 (CA)
Title: Methods for regulating gastrointestinal motility
Inventor: BEELEY NIGEL ROBERT ARNOLD
IPC: A61K38/00
Filed: 1997-08-08
Abstract: Methods for reducing gastric motility and delaying gastric emptying for therapeutic and diagnostic purposes are disclosed which comprise administration of an effective amount of an exendin or an exendin agonist. Methods for treating conditions associated with elevated, inapropriate, or undesired post-prandial blood glucose levels are disclosed which comprise administration of an effective amount of an exendin or an exendin agonist alone or in conjunction with other anti-gastric emptying agents.
Patent CA-2262654-A1 (CA)
Title: Closed-loop feedback control for oxygen concentrator
Inventor: BIRANGI HOMAYOUN
IPC: B01D53/047
Filed: 1998-06-05
Abstract: An oxygen concentrator is provided which has a first molecular sieve bed connected to a four-way valve (i.e., a cross-over valve) which either joins the sieve bed to a pressurized air source (compressed air) or alternatively vents it to atmosphere. A second molecular sieve bed is also joined to the four-way valve in a corresponding manner. One bed is joined to the compressed air to produce oxygen-enriched air while the other is vented to atmosphere to cause evacuation. The sieve beds are joined at the outlet end to a product reservoir. The oxygen-enriched product gas passes from the reservoir to the patient. The sieve beds are also in fluid communication at the outlet end by means of a pressure equalization flow path. A concentration equalization valve regulates the flow in the pressure equalization flow path. In order to purge the nitrogen from a used molecular sieve bed, a quantity of oxygen-enriched air is passed into the bed immediately before it is vented to atmosphere. In accordance with the present invention, the microprocessor uses a closed-loop feedback circuit to evaluate the amount of time that the output product gas is allowed to flow into the used sieve bed. Specifically, an incremental step advance is used assuming a peak value of the time of flow in one direction as compared to the time of flow in the second direction. In a second embodiment, control means is provided based on a variable residence time range and variable pressure set point.
Patent CA-2264607-A1 (CA)
Title: Crystalline pharmaceutical product
Inventor: ROSS STEPHEN TOREY
IPC: C07D401/14
Filed: 1997-08-29
Abstract: This invention provides (S)-7-¢(4,4'-bipiperidin-1-yl)carbonyl!-2,3,4,5-tetrahydro-4-methyl-3-oxo-1H-1,4-benzodiazepine-2-acetic acid, hydrochloride, processes for its preparation and methods for its use.
Patent CA-2266268-A1 (CA)
Inventor: TANENBAUM AARON
IPC: F24F3/153
Filed: 1999-03-22
Abstract: A dehumidifier for use in a bathroom or the like utilizes the cold surface of a heat exchanger to condense moisture, and the hot surface of a heat exchanger to warm the air after the moisture is removed. The cold surface is provided by having the cold water supplied to the room pass through the cold heat exchanger; and, the hot surface is provided by having the hot water supplied to the room pass through the hot heat exchanger. The heat exchangers may be concentric circles, so a recirculation fan centrally of the heat exchangers will move air across the two, or may be rectangular with a plenum at each end so air moves across the two. A drip pan beneath the cold heat exchanger catches the condensate. The circular heat exchangers may be less than a full circle, and a light housed in the space defined. Also, an exhaust fan may be mounted concentrically with the recirculation fan in the circular heat exchanger, or may be mounted in the output plenum of the rectangular device.
Patent CA-2271647-A1 (CA)
Inventor: JAEGER SEBASTIAN
IPC: E21B4/02
Filed: 1999-05-14
Abstract: A Moineau machine has an outer metal member with an inner elastomer lining and a helical inner member. The outer metal member and the inner helical member are rotatable relative to one another. The outer metal member has a helical shape with an axial center axis. The outer metal member as well as the inner elastomer lining have a uniform wall thickness in the axial direction. The outer metal member has a wave-shaped radial cross-section such that between convex portions concave portions are positioned.
Patent CA-2271934-A1 (CA)
Title: A refrigeration system using a slurry of solid particles in a liquid
Inventor: CRASK ROGER PAUL
IPC: F25D17/02
Filed: 1997-11-13
Abstract: A refrigeration system comprises a mixing tank (1; 32; 37) for a slurry of solid particles in a liquid, said mixing tank having first and second inlets and an outlet. A sublimator (3) has a bottom inlet, a top outlet and several internal paths connecting the inlet and the outlet, said internal paths having no descending parts. A first conduit (4) connects the outlet of the mixing tank (1; 32; 37) to the bottom inlet of the sublimator (3) via a pump (2), there being no descending parts between the pump and the inlet of the sublimator (3). A separator (1; 30; 36) has an inlet and top and bottom outlets. A second conduit (7) connects the outlet of the sublimator (3) to the inlet of the separator (1; 30; 36), the bottom outlet of the separator (1; 30; 36) being connected to the first inlet of the mixing tank (1; 32; 37). A compressor (10) has an inlet and an outlet, and conduits connect the top outlet of the separator (1; 10; 36) to the inlet of the compressor (10) and the outlet of the compressor (10) to the second inlet of the mixing tank (1; 32;  37).
Patent CA-2272607-A1 (CA)
Inventor: LEACH MATTHEW JAMES
IPC: C11D1/835
Filed: 1997-12-15
Abstract: The specification disloses improved compositions which both clean a surface and are believed to deposit thereupon a layer of cationic surfactant which assists the release of soil subsequently deposited upon said surface. These comprise a surfactant mixture, wherein said surfactant mixture itself comprises: a) at least 65 wt.% on total surfactant of nonionic surfactant; b) less than 1 wt.% on total surfactant of anionic surfactant; c) 0.1-35 wt.% on total surfactant of a cationic surfactant which is a mono fatty alkyl quaternary ammonium compound wherein the alkyl chains comprise at least 10 % of C18-C26 alkyl groups; wherein said composition further comprises, at least 0.5 wt.% of an organic amine having a pKa of at least 8.0.
Patent CA-2273141-A1 (CA)
Title: Rolling-contact bearing with current bridge
Inventor: KOETTRITSCH HUBERT
IPC: F16C33/78
Filed: 1999-05-27
Abstract: The present invention relates to a rolling-contact bearing that comprises an inner ring (2), and outer ring (3) and, interposed between these, rolling bodies (4), and with a seal (5) arranged at least on one side of the rolling-contact bearing, said seal serving as a current bridge to eliminate electrical current from between the two bearing rings (2, 3). In order to achieve a transfer of current that is appropriate to the particular application, the seal (5) comprises an essentially flat disk (6) that is of electrically conductive material and is secured on one of the bearing rings (2, 3, respectively), and a ring (9) that is secured to the other bearing ring (3, 2, respectively), the disk (6) and the ring (9) being connected electrically.
Patent CA-2275219-A1 (CA)
Title: Coating agent- the manufacture and use thereof
Inventor: HERRMANN FRIEDRICH
IPC: C09D167/00
Filed: 1997-12-11
Abstract: The invention relates to a coating agent for multi-layer enamel with a bonding agent composition containing: a) 25-75 wt. % carboxy-functional (meth)acryl copolymers and/or carboxy-functional polyesters, whose carboxy-functionality corresponds to an acid number ranging from 15-300 mg KOH/g; b) 25-75 wt. % epoxide functionalized cross-linking agent resins of which at least one is a (meth)acryl copolymer produced by additionally using a tertiary butyl (meth)acrylate; c) 0-60 wt % polyols with at least two hydroxyl functions in the molecule; d) 0-40 wt % constituents cross-linking with hydroxyl groups and thus forming ether and/or a triazine-based cross-linking agent; e) 0-40 wt. % polyisocyanates; f) 0-60 wt. % of at least one organic polyanhydride with at least two cyclic carboxylic acid anhydride groups per molecule; g) 0-20 wt. % reactive diluent with an epoxy function; h) 0-10 wt. % catalysts for the reaction of the carboxyl and epoxide groups.
Patent CA-2275303-A1 (CA)
Title: Multilayer liquid absorption and deformation devices
Inventor: WANG LIXIAO
IPC: A61F2/92
Filed: 1997-12-29
Abstract: A multilayer device comprised of at least one layer of material which is capable of absorbing liquid to thereby increase the volume of the layer, i.e., liquid swellable, and when bound to at least one non-absorbing or lesser absorbing layer of material causes deformation of the device upon liquid absorption.
Patent CA-2275516-A1 (CA)
Title: Method for determining the rates of motion and wheel for roller skates and skateboard
Inventor: GROOS DANIEL
IPC: G01L1/16
Filed: 1997-12-13
Abstract: Wheel for roller skates and skateboards, with a rotationally fixed rotational axis (9,19) and a wheel body that is rotatable around the rotational axis, as well as means for measuring the speed at the wheel, whereby means (2, 4, 5, 10) fitted in the wheel are provided for determination of its rotational speed and/or the actual speed of motion of the user of the sport appliance.
Patent CA-2278163-A1 (CA)
Title: Systeme et procede de reduction de la quantite d'eaux usees et de recuperation de produits
Inventor: RAILEY JAY M
IPC: B01D1/22
Filed: 1998-01-13
Abstract: Cette invention se rapporte à un système de réduction de la quantité d'eaux usées dans un flux de déchets et de récupération des constituants réutilisables contenus dans un tel flux comportant au moins deux constituants dotés d'indices de volatilité différents. Ledit système comprend un thermocompresseur (10) à l'intérieur duquel est dirigé le flux de déchets et dans lequel un des constituants du flux de déchets est vaporisé sans que les autres constituants du flux de déchets ne soient vaporisés de manière sensible. Ledit thermocompresseur (10) comporte également un compresseur de vapeur (14) conçu pour comprimer la fraction vaporisée du premier constituant et pour délivrer cette fraction vaporisée et comprimée de manière à transférer de la chaleur au flux de déchets. Ledit système comporte également un évaporateur pelliculaire (16) monté en série avec le thermocompresseur (10) qui transfert la chaleur aux flux après que celui-ci ait quitté le thermocompresseur (10) de façon à vaporiser sensiblement la totalité du premier constituant sans vaporiser de manière sensible le second constituant. Il existe également un second compresseur de vapeur (18) en communication avec l'évaporateur pelliculaire (16), qui est conçu pour comprimer le premier constituant vaporisé issu de l'évaporateur pelliculaire (16) et pour délivrer ce premier constituant vaporisé et comprimé soit au thermocompresseur (10) soit à l'évaporateur pelliculaire (16) afin de transférer de la chaleur au flux qui s'y trouve.
Patent CA-2278985-A1 (CA)
Title: Self-locking filter-screen feeding device
Inventor: PREVIERO FLAVIO
IPC: B29C48/03
Filed: 1999-07-23
Abstract: A self-locking filter-screen feeding device for plastic material; the device comprises a carriage which may be reciprocated on guide rods parallelly extending to a filter band movable across a flow-path for the plastic material to be filtered in a filter apparatus. The carriage is provided with a resting surface for the filter band and pressure members, angularly rotatable operatively connected to actuators for selectively engaging and urging the filter band against the resting surface and for reciprocating the carriage along the guide rods.
Patent CA-2279569-A1 (CA)
Title: Apparatus and method for processing material
Inventor: ETHIER ALBERT
IPC: A01F29/00
Filed: 1999-07-30
Abstract: There is provided a new apparatus for use in the processing of a mass of material in which the mass is of any size or shape. The apparatus comprises a container which has a cutter within a space in the container. The cutter is rotationally driven about an axis. There is provided an adjustable loader for releasably engaging the mass and moving the mass into the container for engagement with the cutter. There is also provided a discharge for selectively discharging processed material from the container.
Patent CA-2280038-A1 (CA)
Title: Non-linear quantizer for video coding
Inventor: SCHMIDT ROBERT LEWIS
IPC: H04N7/30
Filed: 1998-01-23
Abstract: A quantizer and dequantizer for use in a video coding system that applies non linear, piece-wise linear scaling functions to video information signals based on a value of a variable quantization parameter. The quantizer and dequantizer apply different non linear, piece-wise linear scaling functions to a DC  luminance signal, a DC chrominance signal and an AC chrominance signal. A code for reporting updates of the value of the quantization parameter is interpreted to require larger changes when the quantization parameter initially is large and smaller changes when the quantization parameter initially is small.
Patent CA-2281340-A1 (CA)
Inventor: DODSWORTH LYNN
IPC: B22D11/14
Filed: 1999-09-02
Abstract: A mold assembly includes a mold, and an electromagnetic stirrer which encircles the mold. A tubular baffle is disposed between the stirrer and the mold and circumscribes the latter. The baffle has a first portion which extends from a first end of the mold towards, but terminates short of, an opposite second end of the mold.      The baffle further has a second portion which extends from the first portion towards the second end of the mold. The first portion is composed of a nonmagnetic and magnetically-nonconductive material which does not impede the magnetic flux generated by the stirrer. On the other hand, the second portion is composed of a magnetic or magnetically-conductive material which absorbs and/or shunts at least part of the magnetic flux traveling towards the mold.
Patent CA-2281425-A1 (CA)
Inventor: RIES GERD
IPC: A61K8/35
Filed: 1999-09-03
Abstract: The present invention relates to a composition intended to combat the effects of ageing of the skin and/or the exoskeleton, to the use of such a composition and to a method for the cosmetic treatment of changes associated with ageing of the skin and/or the exoskeleton.      In particular, the present invention relates to a cosmetic composition, characterized in that it contains a combination of at least one retinoid chosen from retinol, esters thereof and retinaldehydes, with at least one plant hormone chosen from the group consisting of phyto-sterols and ethoxylated derivatives thereof, pentacyclic triterpenes, isoflavones, isoflavone glucosides, coumestanes and saponosides, and at least one cosmetically acceptable excipient.      This composition is particularly intended to improve the elasticity of the skin and/or is intended for the prevention or treatment of changes in the skin and the exoskeleton associated with ageing.
Patent CA-2284145-A1 (CA)
Title: Method of and apparatus for transmitting data for interactive tv applications
Inventor: CHAUMET CHRISTOPHE
IPC: H04N21/2543
Filed: 1998-03-19
Abstract: A method of transmitting data to a receiver/decoder comprises: transmitting first type visual and/or audio data to the receiver/decoder; and transmitting second type reference data associated with the first type visual and/or audio data to the receiver/decoder to enable the receiver/decoder to generate further visual and/or audio data in dependence on the reference data; wherein the first type data and the second type data have a predetermined timing relationship.
Patent CA-2287834-A1 (CA)
Inventor: DAVIS HUBERT P
IPC: H01L31/068
Filed: 1998-05-05
Abstract: Selon l'invention, une électrode autodopante au silicium est formée en premier lieu d'un métal (composant principal) qui forme un eutectique avec le silicium. Un dopant du type p, destiné à une électrode positive, et un dopant du type n (destiné à une électrode négative), est allié au composant principal. L'alliage constitué du composant principal et du dopant est appliqué sur un substrat de silicium. Le substrat et l'alliage qui y est appliqué sont ensuite chauffés à une température supérieure à la température eutectique de l'ensemble composant principal-silicium, de sorte que le composant principal se liquéfie plus qu'une proportion eutectique du substrat de silicium. La température est ensuite abaissée dans le sens de la température eutectique pour permettre au silicium fondu de se reformer par épitaxie de la phase liquide et ce faisant, d'incorporer des atomes de dopant dans son réseau redéveloppé. Lorsque la température est tombée en dessous de la température eutectique de l'ensemble composant principal-silicium, le silicium, qui ne s'est pas encore reformé en réseau, constitue un alliage en phase solide avec le composant principal et le dopant non utilisé restant. Cet alliage formé par le composant principal, le silicium et le dopant inutilisé constitue le matériau de contact final. Selon une variante, une électrode autodopante peut être formée à partir d'un métal non allié appliqué sur un substrat de silicium. Le métal et le substrat sont chauffés à une température supérieure à la température eutectique de l'ensemble métal-silicium, dans un gaz ambiant, dans lequel une source d'atomes de dopant vaporisés a été introduite. Les atomes de dopant se trouvant dans le gaz ambiant sont absorbés par le mélange métal-silicium en fusion dans une bien plus grande mesure qu'ils ne le sont par les surfaces du substrat de silicium solide. La température est ensuite ramenée à une valeur inférieure à celle de la température eutectique de l'ensemble métal-silicium. Pendant cette réduction de température, la couche de silicium redeveloppée dopée et le matériau de contact final formé par l'alliage métal-silicium sont créés selon le procédé décrit ci-dessus.
Patent CA-2288309-A1 (CA)
Inventor: O'BRADAIGH CONCHUR
IPC: A42B3/20
Filed: 1999-11-02
Abstract: Protective headgear in the form of a helmet (1) and a face mask (2) of a cage-like construction connected to the helmet (1) by loop straps. The face mask (2) is formed from rigid bars (7,8). The bars (7,8) are of a fibre reinforced polymer composite material co-consolidated at a number of intersections. The fibres forming one bar are physically anchored to the fibres of another bar at the intersection (9) by interleaving, knotting, stitching, stapling, etc.  The anchoring of the fibres gives considerable added strength at the intersections (9) as the integrity of the joint is not dependent on the properties of a thermosetting or thermoplastics polymer material. Helmets are made in the same way.