baber/WOPTO huggingface dataset:
Patent CA-2173236-C (CA)
Title: Gas phase process for the epoxidation of non-allylic olefins
Inventor: STAVINOHA JEROME LEONARD JR
IPC: C07D301/10
Filed: 1994-09-21
Granted: 1999-03-30
Abstract: Disclosed herein is an improved gas phase process for the selective eposidation of non-allylic olefins wherein the expoxidation is carried out in the presence of certain inert, paraffin hyfrocarbons. Such hydrocarbons possess higher heat capacities as compared to other materials, e.g., nitrogen, argon, methane and helium, typically used as inert diluents in olefin epoxidations. The disclosed process is particularly useful for the continuous manufacture of 3,4-epoxy-1-butene from 1,3-butadiene.
Patent CA-2176788-C (CA)
Title: Process for producing 4-trifluoromethylnicotinic acid
Inventor: KOYANAGI TORU
IPC: C07C251/08
Filed: 1996-05-16
Granted: 2007-01-09
Abstract: A process for producing 4-trifluoromethylnicotinic acid of the formula (VIII) or its salt: (see formula I) which comprises (i) a first step of reacting a halide of the formula (I): CF3COHal (I) wherein Hal is a halogen atom, with a compound of the formula (II): CH2=CHOR1 (II) wherein R1 is an alkyl group, in the presence of a base to obtain a 4-alkoxy-1,1,1-trifluoro-3-buten-2-one of the formula (III): CF3CO-CH=CH-OR1 (III) wherein R1 is as defined above, and reacting this compound with ammonia to obtain 4-amino-1,1,1-trifluoro- 3-buten-2-one of the formula (IV):   and (ii) a second step of subjecting the 4-amino-1,1,1- trifluoro-3-buten-2-one obtained in the first step and a compound of the formula (V): ACO2R2 (V) wherein R2 is an ester-forming residue, and A is (R3O)CH=CH- or (R30)2CHCH2-, wherein R3 is an alkyl group, to a condensation reaction to obtain a compound of the formula (VI) (inclusive of its salt):   wherein R2 is as defined above, and/or a compound of the formula (VII) (inclusive of its salt):   wherein R2 and R3 are as defined above, as the reaction product, and then subjecting the reaction product to ring closure and hydrolysis.
Patent CA-2185128-C (CA)
Title: Methode et dispositif pour deceler des cellules specifiques cibles dans des populations specialisees ou mixtes de cellules; solutions renfermant des populations mixtes de cellules
Inventor: RYE PHILIP D
IPC: G01N33/531
Filed: 1995-03-10
Granted: 2009-01-13
Abstract: Méthode et appareil permettant de dépister, selon une procédure simple et rapide, certaines cellules cibles au moyen de particules paramagnétiques, d'anticorps reconnaissant les portions Fc des anticorps s'associant aux cellules cibles et les anticorps s'associant aux cellules cibles dirigés contre des déterminants antigèniques spécifiques dans les membranes des cellules cibles. L'incubation de la suspension de cellules avec un détergent et/ou des anticorps secondaires ou des fragments d'anticorps, ayant ou non fait l'objet d'un prémarquage à l'aide d'agents fluorescents, de métaux colloïdaux, de radioisotopes, de complexes de biotine ou de certains enzymes permettant la visualisation, renforce considérablement la spécificité de cette méthode. La méthode et l'appareil décrits permettent de produire un support solide et une représentation permanente, aisément visualisable par microscopie, et d'assurer la visualisation et la quantification de la totalité de l'échantillon plutôt que de petites fractions de celui-ci. La méthode et l'appareil permettent, en outre, d'analyser d'importants volumes d'échantillons, et le dispositif se prétant également au dépistage automatique par une technique classique de densitométrie. L'appareil et la méthode peuvent être utilisés pour isoler les cellules cibles par application d'un champ  magnétique, et l'invention prévoit un kit et un appareil permettant d'appliquer ladite méthode.
Patent CA-2185207-C (CA)
Inventor: BLYAKHMAN YEFIM
IPC: C08K5/3445
Filed: 1996-09-10
Granted: 2008-02-12
Abstract: 1-Imidazolylmethyl-2-naphthols are effective catalysts and accelerators for curing epoxy resins, said naphthol compounds providing epoxy resin systems with prolonged room-temperature stability and fast curing at temperatures of 110°- 150°C.
Patent CA-2188164-C (CA)
Title: Benzamide compounds and pharmaceutical use thereof
Inventor: ARITA MASAFUMI
IPC: C07D401/12
Filed: 1995-04-17
Granted: 2005-08-09
Abstract: Benzamide compounds of the formula (see formula I)~          wherein each symbol is as defined in the specification, isomers thereof and pharmaceutically acceptable acid addition salts thereof.      Pharmaceutical compositions comprising a therapeutically effective amount of this compound and a pharmaceutically acceptable additive, and therapeutic agents for hypertension, therapeutic agents for angina pectoris, therapeutic agent for asthma, therapeutic agents for renal and peripheral circulatory disturbances and inhibitor of cerebral vasospasm, which comprise this compound.      The compound of the present invention has strong smooth muscle relaxing action, and shows hypotensive action and cerebral .cndot. coronary vasodilating action like conventional calcium antagonists, as well as long-lasting renal and peripheral circulation improving action.      Unlike calcium antagonists, it permits oral administration to suppress vascular contraction caused by various agonists, and is useful as a strong and long-acting agent for prophylaxis and treatment of circulatory diseases in coronary, cerebral, renal and peripheral arteries, as a therapeutic agent for hypertension, angina pectoris, and renal and peripheral circulation disorder, an inhibitor of cerebral vasospasm and the like. Moreover, the compound of the present invention is useful as a therapeutic agent for asthma.
Patent CA-2192498-C (CA)
Inventor: FORGUES SCOTT L
IPC: G10L21/0208
Filed: 1996-12-10
Granted: 1999-11-02
Abstract: Disclosed is an apparatus for reducing background noise in a telecommunications device, the telecommunications device including a microphone for receiving acoustic signals and generating corresponding electrical signals therefrom, the acoustic signals including voice signals and background noise signals. The apparatus of the present invention in one embodiment include an amplifier having an input for receiving the electrical signals from the microphone and an output, said amplifier operable to receive electrical signals at the first input and provide amplification to the electrical signals to produce amplified electrical signals. The amplifier is further operable to provide amplification at a first gain level and a second gain level, said first gain level exceeding the second gain level. The apparatus also includes a feedback device connected to the output of the amplifier and further operably connected to control the operation of the amplifier. The feedback device is operable to cause the amplifier to provide amplification at the first gain level when the feedback device receives amplified electrical signals at the output having an amplitude above a predetermined threshold and cause the amplifier to provide amplification at the second gain level when the feedback device receives amplified electrical signals at the output having an amplitude below the predetermined threshold.
Patent CA-2197710-C (CA)
Title: Compensateur de centrage a servocommande pour systemes de direction de vehicules
Inventor: HOWARD DURRELL U
IPC: B63H25/14
Filed: 1995-09-26
Granted: 1999-12-28
Abstract: Un appareil de centrage de force (10) assure une résistance au mouvement décentré des roues directrices (36) d'un véhicule et leur fait reprendre une position de centrage sélectionnée après chaque mouvement. La force de résistance, la force de renvoi et la position de centrage sélectionnée peuvent être modifiées à distance. Un réservoir annulaire (64) de liquide est formé  dans un accumulateur (62) par une paroi externe solide (87) concentrique à une paroi interne flexible (68) et permet de séparer le gaz du liquide renvoyé et du liquide exempt de gaz devant être envoyé vers une unité de centrage (13) et une unité de correction (16) de la position de centrage. Une pluralité de passages et de clapets de non retour permettent le fonctionnement de l'unité  de correction (16) à l'aide d'une électrovanne (25) unique et d'acheminer le liquide exempt de gaz vers les chambres d'équilibrage (139, 146) et d'éliminer le liquide contaminé par le gaz de ces chambres se trouvant sur les côtés opposés d'un piston d'équilibrage (116) sans mélanger les deux liquides.
Patent CA-2200532-C (CA)
Inventor: ADAM BENOIT
IPC: G03G13/054
Filed: 1997-03-20
Granted: 2002-02-26
Abstract: Erasure of an x-ray imaging device is performed by applying high voltage and erasing light simultaneously. The polarity of the high voltage may be reversed during the erasure operation. This produces an erasure that eliminates non-uniformities or ghosts arising from a previous image.
Patent CA-2201205-C (CA)
Title: Motor vehicle headlamp
Inventor: SOSKIND YAKOV G
IPC: F21S8/12
Filed: 1997-03-27
Granted: 2004-08-31
Abstract: A vehicle headlamp may be formed from a light source; a divergent lens; and a reflector facing in a forward direction to the lens. The reflector has one or more first regions, and one or more second regions. The first region is a section of an ellipsoid of revolution with one focal point coincident with the light source, and one focal point located at the first focal point of the lens. The second regions have a surface with an elliptical vertical cross section having a first focal point coincident with the light source and a second focal point coincident with the first focal point of the lens. The second surface additionally has a horizontal axial cross section having a first focal point coincident with the light source and a second focal point axially offset from the first focal point of the lens.      The horizontal axial cross section may be elliptical, parabolic or hyperbolic. Light from the first regions is convenient to form the beam hot spot. Meanwhile, light from the second regions is convenient to form the beam spread.      In total the system provides a headlamp with a short axial dimension and a small frontal opening while meeting headlamp beam standards.
Patent CA-2201763-C (CA)
Inventor: ROBBINS GERALD M
IPC: B63H16/067
Filed: 1997-04-03
Granted: 2003-09-16
Abstract: A rowing apparatus having support tubing that extends over the gunnels of the canoe, and to which the oars are mounted, is angled upwardly to provide added clearance in choppy waters. The elongated track support to which the seat and the support tubing are mounted is provided with repositionable mounting brackets that enable the height from the floor of the elongated support member to be adjusted within a range of several inches to maintain a suitable center of gravity for a wide range of weather conditions. In this manner the rower is capable of maximizing the transfer of power through the rowing apparatus, and still maintain the stability of the canoe. Since wilderness rowing is a physically demanding activity, the rowing apparatus is easily adaptable for use as a training device, permitting the user of the apparatus to use the same device in their home for exercise and training purposes that they can also use in their canoe on an actual wilderness rowing expedition.
Patent CA-2203230-C (CA)
Title: Polycarbonate compositions having mold-release properties
Inventor: MAFOTI ROBSON
IPC: C08K5/10
Filed: 1997-04-21
Granted: 2006-02-14
Abstract: A thermoplastic molding composition comprising polycarbonate and a complex ester are disclosed. The ester which conforms to (see above formula) wherein p is an integer of 2 to 8, q is an integer of 7 to 13 and R and R' independently denote a C x H2x+1-group, where x is an integer of 8 to 24, with the proviso that R is linear, was found to impart to the composition excellent mold filling and release properties. The disclosed molding composition is suitable for the preparation of a variety of useful articles.
Patent CA-2206567-C (CA)
Title: Method and composition for reducing tumor development with a combination of a taxane compound and a tellurium and/or selenium compound
Inventor: METTINGER KARL L
IPC: A61K31/337
Filed: 1995-12-12
Granted: 2006-09-05
Abstract: There are provided compositions for, and a method of, treating malignancies which comprise effective amounts of a novel combined therapy comprising a taxane compound, e.g., paclitaxel, and a tellurium or selenium compound, e.g., ammonium trichloro(dioxoethylene-O,O-tellurate), and administering the respective compounds simultaneously or separately.
Patent CA-2207134-C (CA)
Inventor: OGURA TOYOSAKU
IPC: A44B19/38
Filed: 1997-06-06
Granted: 2000-04-04
Abstract: A separable bottom stop assembly of thermoplastic resin comprising a box molded on a lower end of one of opposite slide fastener stringers and an insert pin molded on a lower end of the other fastener stringer.  The box has a straight insert-pin receiving hole off to one side.  An outer wall of the insert-pin hole has a side slit having at its lower end a stopper.  The insert pin is taper toward its lower end and has a straight tape-side edge.  A guide ridge is integrally formed with the insert pin with a thin portion between them.  When the insert pin is inserted into the insert-pin hole of the box, a lower end of the guide ridge slides along edges of the side slit, guiding insertion of the insert pin to facilitate smooth insertion without exerting load on the insert pin.
Patent CA-2224979-C (CA)
Inventor: PRESS HARRY BARON
IPC: H04J13/16
Filed: 1996-06-14
Granted: 2007-01-09
Abstract: A CDMA communication system is provided in which bit rates are dynamically allocated by a single CDMA receiving station (RS) to a plurality of CDMA transmitting stations, (TS1, TS2 ...) all of which are intercoupled to each other over a CDMA channel (FB1) and a feedback channel (FB2). Each CDMA transmitting station (Fig.3) includes a control circuit (31, 32) which sends control signals (Fig. 2A) on the CDMA channel in spaced apart time intervals which request respective bit rates on the CDMA channel; and, the CDMA receiving station (Fig. 4) includes a bit rate allocating circuit (52 53, 54) which receives and responds to the control signals by sending feedback messages (Fig. 2B) over the feedback channel that address individual CDMA  transmitting stations and grant respective bit rates to the addressed station. In one preferred embodiment, each transmitting station includes a data buffer (30) which stores a time varying number of data bytes that are to be sent, and each transmitting station requests respective bit rates on the CDMA channel by including that number in the control signals.
Patent CA-2229915-C (CA)
Inventor: FUKUNO HIROKI
IPC: F02C3/30
Filed: 1998-02-19
Granted: 2002-11-05
Abstract: In cooling a gas turbine stationary blade, steam and air are used as cooling media, the steam is recovered surely without leakage and used effectively, and the amount of air required for cooling is decreased to provide a margin for combustion air, by which the gas turbine efficiency is improved.  A steam cooling section is provided at the rear from the blade leading edge, and an air cooling section is provided at the blade trailing edge.  The steam cooling is effected by cooling the blade by the cooling steam flowing in the serpentine flow path having turbulators after impingement cooling of an outside shroud and by impingement-cooling an inside shroud during the cooling process, the cooling steam being led to a recovery section from the outside shroud.  On the other hand, the air cooling section consists of an air flow path extending from the outside shroud to the inside shroud and slot cooling at the blade trailing edge.  Thus, the stationary blade is cooled by both of the steam cooling section and air cooling section.
Patent CA-2230520-C (CA)
Inventor: LUO LIFENG
IPC: H05H1/34
Filed: 1998-02-25
Granted: 2001-05-01
Abstract: A drag cup for a plasma arc torch is mounted on a sleeve member of the torch tip having a conical outer surface portion converging toward the torch nozzle and electrode assembly. The drag cup includes a mounting end, a conical portion extending along the conical portion of the sleeve member, and an end radially spaced from and surrounding the torch nozzle and including an end wall spaced axially outwardly of the end of the nozzle and having an opening therethrough coaxial with the plasma jet outlet orifice in the nozzle. The opening through the end wall of the drag cup is 3 to 6 times the size of the nozzle orifice and is large enough to provide a shielding gas flow about the plasma jet without disturbing the jet and, at the same time is small enough to protect the nozzle against molten metal blow-back through the opening.
Patent CA-2234590-C (CA)
Inventor: LLOYD DAVID B
IPC: B03B5/12
Filed: 1998-04-09
Granted: 2006-11-21
Abstract: An improved jig screen 10 for a centrifugal jig includes a recovery zone 30 and a stratification zone 20 adjacent to one another. The stratification zone 20 is constructed to prohibit outward radial passage of slurry particles while permitting fluid pulsations to be imparted to the slurry during jig screen 10 rotation. The stratification zone 20 axially leads to the recovery zone 30. The recovery zone 30 has openings permitting passage of particles in the slurry and through which fluid pulsations are directed to the slurry during jig screen 10 rotation. The combination of applying centrifugal force and fluid pulsations to a pre-stratified slurry more effectively separates the heavy particles passing through the recovery zone 30 of the jig screen 10 from the lightweight particles discharged at its exit end.
Patent CA-2238182-C (CA)
Inventor: JONES LEE ANTONY
IPC: B61L5/06
Filed: 1996-11-13
Granted: 2003-03-18
Abstract: A point drive unit (10) is disclosed for driving railway points to move via a connecting means of the points located generally centrally between two of the rails (3) of the railway track. The unit comprises a housing (11, 12) adapted to be installed between the two of the rails; a cylinder (18) enclosing a piston (19) which is moveable for driving the points, the cylinder being mounted within the housing at a location laterally offset to one side of the housing; control means mounted within the housing at a location laterally adjacent the cylinder for controlling the supply of fluid to the cylinder to control the movement of the piston; and an offset coupling (20) for coupling the piston to the connecting means so that the piston is laterally offset from the connecting means.
Patent CA-2241904-C (CA)
Inventor: KLEIN SCOTT I
IPC: A61K31/404
Filed: 1996-12-23
Granted: 2004-12-21
Abstract: The compounds according to the invention are substituted N-[(aminoiminomethy l or aminomethyl)phenyl]propyl amides of formula (I) herein which exhibit useful pharmacological activity and accordingly are incorporated into pharmaceutical compositions and used in the treatment of patients suffering from certain medical disorders. More especially, they are Factor Xa inhibitors. The present invention is directed to compounds of formula (I), compositions containing compounds o f formula (I), methods for their preparation and their use, which are for treating a patient suffering from, or subject to, conditions which can be ameliorated by the administration of an inhibitor of Factor Xa.
Patent CA-2242334-C (CA)
Title: Formatting of short message service messages in a cellular telephone network
Inventor: HOUDE MICHEL
IPC: H04W4/14
Filed: 1997-01-14
Granted: 2004-11-09
Abstract: Air interface independent bearer data is provided in short message service delivery point-to-point (SMSDPP) invoke communications. The bearer data (52) of the SMSDPP invoke communication includes a portion (52(1), 52(2)) formatted for each of the different types of cellular network supported air interfaces (82). The particular portion of the bearer data corresponding to the air interface currently being used by that addressee mobile station is then processed to recover the included short message service message. Alternatively, the bearer data of the SMSDPP invoke communication is generically formatted (62), with the generic bearer data converted (90) by the cellular network to be compatible with the specific one of the plurality of different types of air interfaces (82) supported by the cellular telephone network based on an identification made by the cellular telephone system as to which air inteface is currently being used by the addressee mobile station. Upon receipt, that addressee mobile station (78) processes the converted beared data to recover the included short message service message.
Patent CA-2242547-C (CA)
Title: Limitation des contraintes d'origine electrique
Inventor: KEMP CHRISTIAN
IPC: H02G15/04
Filed: 1997-01-14
Granted: 2005-03-22
Abstract: L'invention porte sur une composition destinée à être utilisée en tant que couche (12) de limitation des contraintes d'origine électrique dans des jonctions et des raccordements de câbles, cette composition présentant une caractéristique non linéaire de type V-I. Ladite composition contient une matrice polymère remplie de varistor pulvérulent dopé à l'oxyde de zinc. La matière de remplissage particulaire est tamisée à 125 micromètres, calcinée à 1100  DEG C et légèrement meulée de façon à conserver la forme sphérique des particules. Plus de 50 % en poids des particules ont une dimension maximale comprise entre 5 et 100 micromètres.
Patent CA-2246063-C (CA)
Inventor: FELDMAN EDWARD T
IPC: B60P7/15
Filed: 1998-08-28
Granted: 2001-04-24
Abstract: A cargo load bracing bar comprises first, outer and second, inner telescoping tubular members, a housing attached to the outer tubular member, a pinion gear and actuating ratchet handle, having a spring-biased ratchet member mounted thereon, respectively rotatably and pivotally mounted upon the housing, and a gear rack attached at one end thereof to the inner tubular member while the opposite end of the gear rack is slidably disposed upon the outer tubular member. An angle bracket is mounted upon the housing, and a spring-biased pawl member is slidably disposed upon the gear rack and operatively associated with the angle bracket  The pawl member and the ratchet member are normally engaged with the pinion gear so as to achieve the ratcheting extension of the gear rack and the inner tubular member with respect to the outer tubular member. However, the ratchet member may be disengaged from the pinion gear so as to permit the ratchet handle to be moved to a collapsed position substantially parallel to the outer tubular member, and both the ratchet member and the pawl member may be disengaged from the pinion gear so as to permit the pinion gear to freely rotate, and the gear rack and inner tubular member to undergo free longitudinal movement, so as to permit the cargo load bracing bar to be rapidly extended or contracted.