baber/WOPTO huggingface dataset:
Patent CA-2070316-A1 (CA)
Title: Wideband optical amplifier-receiver utilizing two electrode optical amplifier
Inventor: OLSHANSKY ROBERT
IPC: H01S5/042
Filed: 1992-06-03
Abstract: WIDEBAND OPTICAL AMPLIFIER-RECEIVER UTILIZING           TWO ELECTRODE OPTICAL AMPLIFIER            Abstract A semiconductor optical amplifier is utilized for optical amplification and for detection of an optical signal at the current injection electrode of the optical amplifier.  A wide detection bandwidth is provided by utilizing an impedance transformer between the current injection terminal  and the detection circuit.   The impedance transformer typically has an input impedance of about 1 to 15 ohms.  The impedance transformer can be a bipolar  junction  transistor  circuit,  a  microstrip transmission line impedance transformer or a hybrid impedance transformer.  A wide detection bandwidth is also obtained by providing a semiconductor optical amplifier having two current injection electrodes.  A bias current is supplied through both current injection electrodes, and both electrodes produce optical gain.  However, only one of the electrodes is used for optical signal detection.          The detection electrode has a relatively high junction resistance and a relatively high series resistance.
Patent CA-2070983-A1 (CA)
Title: Cyclic renin inhibitors
Inventor: GREENLEE WILLIAM J
IPC: C07F9/6558
Filed: 1992-06-10
Abstract: TITLE OF THE INVENTION   (3S,4S)-4-AMINO-5-CYCLOHEXYL-3-HYDROXY PENTANOIC ACID, 2-SUBSTITUTED (3S,4S)-5-CYCLOHEXYL-3,4-DI-HYDROXYPENTANOIC ACID OR 2-SUBSTITUTED (4S,5S)-5-ANALOGS            ABSTRACT OF THE DISCLOSURE        Compounds of the formula:            (I) -i-               17784IC   are disclosed.  These compounds inhibit the angioten-sinogen-cleaving action of the natural proteolytic enzyme, renin, are useful in treating, preventing or managing renin-associated hypertension, hyperaldo-steronism, congestive heart failure, and glaucoma.
Patent CA-2072276-A1 (CA)
Title: Multilayer forming fabric
Inventor: DANBY ROGER
IPC: D21F1/00
Filed: 1992-06-25
Abstract: ABSTRACT    A triple layer papermaking fabric having top and bottom fabric layers joined by a binder yarn, the top fabric layer including machine direction and cross machine direction yarns interwoven in a plain weave having an open area determined by the formula:     (1 - Nc x Dc) x (1 - Nm x Dm) x 100 where Nc = number of Cross Machine Direction yarns per inch Nm = number of Machine Direction yarns per inch Dc = diameter of Cross Machine Direction yarns Dm = diameter of Machine Direction yarns The configuration of the papermaking fabric reduces or eliminates density differences in the finished paper sheet produced on it.
Patent CA-2073493-A1 (CA)
Title: Recombinant marek's disease virus, process for preparing the same and vaccine containing the same
Inventor: SAKAGUCHI MASASHI
IPC: A61K39/00
Filed: 1992-07-08
Abstract: The present invention is directed to a recombinant Marek's disease virus produced by mutation of a Marek's disease virus with a plasmid wherein said plasmid comprises (1) a gene fragment derived from the Us region or inverted repeat sequences adjacent to both ends of said Us region of a Marek's disease virus genome and (2) an exogenous gene expression cassette incorporated in said gene fragment, said cassette comprising an exogenous gene bound downstream of a promoter derived from an animal cell or an animal virus.      The invention is further directed to a process for preparing the same, a multivalent live vaccine for birds comprising the same, and a vector for administration of a physiologically active substance to birds comprising the same.
Patent CA-2074352-A1 (CA)
Inventor: MCEVILY ARTHUR J
IPC: A23L5/41
Filed: 1991-01-30
Abstract: Compositions which can prevent oxidation darkening of foods and beverages and methods for producing it are disclosed. The compounds inhibit the enzymatic browning of foods and beverages susceptible to browning, such as shrimp, apples, fruit juices and wines. Methods for producing the compounds and methods for inhibiting browning using the composition are de-scribed.
Patent CA-2074796-A1 (CA)
Title: Method of preparing insoluble hydrolysable tannin and method of treating waste liquid with the tannin
Inventor: SHIRATO WATARU
IPC: C08H99/00
Filed: 1992-07-28
Abstract: ABSTRACT OF THE DISCLOSURE     An insoluble hydrolysable tannin is prepared by dissolving a hydrolysable tannin powder in aqueous ammonia; mixing  the  resulting  solution  with  an  aldehyde  aqueous solution to form a precipitate; heating the precipitate; mixing the heated precipitate with  a mineral  acid;  and filtering the resulting mixture to leave a residue on a filter.    The  inventive  insoluble  tannin  exhibits  high adsorption  properties  for  heavy  metal  elements  and  is insoluble in either water, acid,  or alkali.   Methods for treating waste liquids and recovering heavy metal elements therefrom using the inventive insoluble tannin are dis-closed.
Patent CA-2077034-A1 (CA)
Title: Surgical stapling method
Inventor: COOK MELVIN S
IPC: A61B17/068
Filed: 1992-08-27
Abstract: ABSTRACT      An improved surgical stapling method and appara-tus therefor is disclosed in which parallel rows of staples are inserted prior to forming an incision.          When the incision is to be closed, the corresponding staples of the two rows are brought together by suit-able locking pins or other techniques.
Patent CA-2077554-A1 (CA)
Title: Appareil a fendre le carton ondule et autres produits similaires
Inventor: PAULSON RICHARD F
IPC: B24B3/36
Filed: 1991-03-07
Abstract: L'appareil décrit, qui sert à pratiquer des fentes longitudinales latéralement espacées dans une feuille ou une bande continuellement en mouvement de carton ondulé (13) ou similaire, comprend plusieurs têtes d'outil supérieures (12) soutenant chacune une mince lame à refendre circulaire et rotative (25). Les lames (25) sont montées coaxiales et sont entraînées par un arbre d'entraînement commun (23) et chaque tête d'outil (12) portant une lame peut être positionnée indépendemment dans la largeur de la feuille de carton (13). Chaque unité de refendage comprend une tête d'outil inférieure ou contre-tête (28) portant une unité à cylindre (32) qui soutient la face inférieure (27) du carton en mouvement (13) et forme une surface solide maintenant le carton (13) en support contre la lame à refendre supérieure rotative (25). L'unité à cylindre (32) comporte dans sa surface externe une rainure circonférentielle s'étendant radialement (44) à travers laquelle passe une partie du tranchant de la lame à refendre supérieure (25), tandis que la feuille est fermement soutenue par les surfaces du cylindre sur chaque côté de la rainure (44). Un lubrificateur (61) pour lames est fixé à la tête supérieure (12) et sert à appliquer un mince film de lubrifiant sur le tranchant (67) de la lame par contact direct avec une mêche lubrifiante (65), pendant la rotation de la lame (25). La mince lame (25) est maintenue aiguisée par contact périodique avec un outil d'aiguisage rotatif (73) qui est fixé pivotant à la tête d'outil supérieure (12) et qui, en vue de l'aiguiser, entre en contact périodique léger avec l'une des faces du tranchant en biseau (67) de la lame. Le lubrificateur de lames (61) et l'aiguiseur de lames (73) peut se retracter dans des positions de non fonctionnement, afin de faciliter le changement de la lame ou l'inversion de la lame, ce qui permet de prolonger la durée de vie des lames lors des aiguisages périodiques du biseau opposé du tranchant de la lame. Le contact par chevauchement avec la partie de la lame à refendre (25) qui s'étend dans la rainure (44) ménagée dans l'unité à cylindre de support inférieure (32) permet à la tête d'outil inférieure (28) et à l'unité à cylindre (32) d'effectuer un mouvement de translation dans le sens de la largeur de la feuille (13), comme pour un repositionnement, à l'aide d'une seule unité à moteur de positionnement (87) placée sur la tête d'outil supérieure (12).
Patent CA-2077752-A1 (CA)
Title: Free-radical retrograde precipitation-polymerization process
Inventor: CANEBA GERARD T
IPC: B01J19/18
Filed: 1991-03-06
Abstract: A free radical retrograde polymerization process for forming a polymer. An admixture of reactants including predetermined amounts of a monomer, a solvent and a free radical initiator is reacted.  A precipitation polymerization reaction occurs such that a polymer-rich phase is at a temperature generally above the lower critical solution temperature (LCST) of the admixture.
Patent CA-2079283-A1 (CA)
Title: Method and device for the vacuum cleaning of fiber
Inventor: MOSS PARRY A
IPC: B08B5/04
Filed: 1992-09-28
Abstract: Method and Device For The Vacuum Cleaning of Fiber Abstract A vacuum cleaning device (20) which is capable of being used in-line as part of existing optical fiber processing paths. The device includes a rear plate (22) and a front plate (24) positioned adjacent to each other. Each of the plates (22 and 24) include at least one beveled edge with the plates being aligned such that their respective beveled edges create a V-shaped groove or trough (26). During operation, the device is aligned relative to the fiber processing path such that the fiber travels parallel to the device. Furthermore, a plurality of slots (36) are evenly spaced along the trough (26) to provide widened areas of increased air flow around the fiber. In addition, the front plate (24) includes means for directing a vacuum from a source to the trough (26) in order to generate a vacuum pressure around the fiber while the fiber is being passed through the vacuum cleaning device. The applied vacuum pressure acts to remove loose debris, as well as residue from cleaning solutions which may have been used, from the surface of the fiber.
Patent CA-2083001-A1 (CA)
Inventor: TAKAHASHI YUZURU
IPC: H01M4/58
Filed: 1992-11-16
Abstract: A lithium secondary battery using a non-aqueous solvent in which the anode material comprises nitrogen containing carbon materials prepared by pyrolyzing organic compound starting materials synthesized by reacting at least one conjugated polycyclic compound with a nitrocompound or a nitrating agent.
Patent CA-2087061-A1 (CA)
Title: Rip-saw
Inventor: WELK PAUL
IPC: B23D51/01
Filed: 1993-01-11
Abstract: ABSTRACT           The invention is a small, portable hand tool.  It has provisions for attaching a saw blade in multiple positions and angles.  The cutting action is carried out, by pulling the attached saw blade across the object to be cut.  It is intended to cut small metallic and non-metallic objects.
Patent CA-2089442-A1 (CA)
Title: Amino-substituted benzoylguanidines, process for their preparation, their use as a medicament and medicament containing them
Inventor: ENGLERT HEINRICH
IPC: A61P13/02
Filed: 1993-02-12
Abstract: Amino-substituted benzoylguanidines, process for their preparation, their use as a medicament and medicament containing them Benzoylguanidines of the formula I    are described in which R(1) or R(2) is an amino group -NR(3)R(4), where R(3) and R(4) are H or (cyclo)alkyl or R(3) is phenyl-(CH2)P- where p = 0, 1, 2, 3 or 4, or phenyl, or R(3) and R(4) can also together be a methylene chain, and in which the other substituent R(1) or R(2) in each case is H, F, C1, alkyl, alkoxy, CF3, C m F2m+1-CH2-, benzyl or phenoxy, and their pharmaceutically tolerable salts.      The compounds according to the invention have very good antiarrhythmic properties, as occur, for example, in the case of oxygen deficiency symptoms. The compounds are used as antiarrhythmic pharmaceuticals having a cardioprotective component for infarct prophylaxis and infarct treatment as well as for the treatment of angina pectoris, where they also preventively inhibit or greatly decrease the pathophysiological processes in the formation of ischemically induced damage, in particular in the production of ischemically induced cardiac arrhythmias.
Patent CA-2092094-A1 (CA)
Title: Dextrin sulfates as anti-hiv-1 agents and composition thereof
Inventor: DAVIES DONALD S
IPC: C08B31/06
Filed: 1991-09-23
Abstract: An agent is provided herein which is effective against HIV-1 and related viruses. The agent is, or includes, dextrin sulphate containing at most two sulphate groups per glucose unit. The weight average molecular weight of the dextrin sulphate varies from 15,000 to 25,000. Preferably the weight average molecular weight of the dextrin sulphate is at least 15,000. Preferably the agent contains at most 2-sulphate groups per glucose unit and contains at least 50% of polymers of a degree of polymerisation greater than 12.
Patent CA-2094384-A1 (CA)
Title: Transmission device, especially for a motor vehicle
Inventor: ANTONOV ROUMEN
IPC: F16H3/54
Filed: 1991-08-22
Abstract: The crown wheel (2) of a planetary gear (5) is connected to the input shaft (7) while the planet carrier (4) is connected to the output shaft (12). The sun wheel (1) is locked by means of a free wheel (14) when the clutch (9) is released. The device then operates as a reduction gear. The sun wheel (1) rotates with the crown wheel (2) and the planet carrier (4) when the clutch (9) is engaged. The axial forces (FAP?, FAC?), sustained by the sun wheel (1) and the crown wheel (2) when in gear-reduction mode, and resulting from the helical tooth configuration, tend through the stop (17) to compress a spring (18) and release the clutch (9). When in direct drive and beyond a certain torque, the clutch (9) slips, thereby generating the above-mentioned axial forces which compress the spring and accelerate disengaging. The device operates as a reduction gear until the torque on the shaft (7) is reduced, thereby enabling the spring (18) to re-engage the clutch. For use on the input side of a gear box in order to automatically reduce speed ratios during acceleration, the gear box being itself preferably automatically controlled, especially under the effect of axial forces generated by other planetary gears.
Patent CA-2098145-A1 (CA)
Title: Relay
Inventor: JOHLER WERNER
IPC: H01H49/00
Filed: 1993-06-10
Abstract: Abstract Relay To increase the dielectric strength of a gas-filled enclosed relay as compared to that attainable with a relay of the same size whose interior is filled with dry air or an inert gas, the interior of the relay is filled under normal pressure with a filler gas which contains at least one electronegative gas. The enclosure is made of plastic. The plastic en-capsulation is sealed and is matched with the filler gas in such a way as to sufficiently prevent the electronegative gas from diffusing away. As a re-sult, the dielectric strength will not fall below a specified value throughout the life of the relay.
Patent CA-2098399-A1 (CA)
Title: Method for memory enhancement and quality of life improvement
Inventor: ROBERTS EUGENE
IPC: A61K31/57
Filed: 1992-10-20
Abstract: Administration of pregnenolone or pregnenolone sulfate to enhance memory and improve the quality of life in mammals, including humans, is disclosed.
Patent CA-2098619-A1 (CA)
Inventor: MCDOUGALL LEE A
IPC: C09K8/92
Filed: 1992-01-03
Abstract: An encapsulated breaker chemical composition used in a fracturing process in the protection of an oil or gas stimulation operation which comprises: a breaker chemical and a pinhole free coating of a neutralized sulfonated elastomeric polymer of about 2 to about 80 microns thick deposited onto the surface of the breaker chemical, wherein said neutralized sulfonated polymer encapsulates the breaker chemical, wherein the neutralized sulfonated polymer is permeable to the breaker chemical and the neutralized sulfonated polymer is non-reactive to the breaker chemical.
Patent CA-2098728-A1 (CA)
Inventor: NADLER MURRAY
IPC: C10G50/00
Filed: 1991-12-06
Abstract: The present invention is directed to a process for treating hydro-treated naphtha which involves treating the naphtha over massive nickel catalyst followed by treating the naphtha over a metal oxide un-der conditions effective for removing impurities from said naphtha to result in substantially purified naphtha, wherein the metal oxide is se-lected from the group of metal oxides having a free energy of forma-tion of sulfide which exceeds said free energy of formation of plati-num sulfide, such as manganous oxide. In doing so, naphtha in the gas phase in the presence of hydrogen is passed over the manganous oxide at a temperature within the range of about 800 ° F and 1100 °F, a hydrogen to oil molar ratio between about 1:1 and 6:1, a whsv be-tween about 2 and 8, and pressure between about 50 and 300 psig; and the naphtha in the liquid phase at a temperature between about 300 °F and about 350 °F, and whsv less than about 5 is passed over the mas-sive nickel.  The naphtha in the liquid phase, at about ambient temper-ature, and at a whsv between 2 and 10, may also be passed over an Na Y mole sieve prior to treating over massive nickel and manganous ox-ide.  In addition the naphtha be being passed over alumina after treat-ing over massive nickel and prior to treating over manganous oxide in the liquid phase, at a temperature between 300 °F and 350 °F, and a whsv between 2 and 10. The naphtha may also be passed over a mole sieve water trap in the liquid phase at ambient temperature and at a whsv between 2 and 10, prior to treating over massive nickel  and man-ganous oxide.
Patent CA-2101547-A1 (CA)
Title: Pharmaceutical combination for the prevention and treatment of postmenopausal osteoporosis
Inventor: CHIESI PAOLO
IPC: A61K31/565
Filed: 1992-01-28
Abstract: A pharmaceutical composition for the treatment of postmenopausal syndrome, particularly for the prevention and therapy of postmenopausal osteoporosis and the treatment of climacteric disorders, containing ipriflavone in combination with estrogens, is described.
Patent CA-2101715-A1 (CA)
Inventor: MATUSMOTO TADAHIRO
IPC: B29C65/18
Filed: 1993-07-30
Abstract: ABSTRACT      A method for and an apparatus of sealing containers are disclosed.  Before causing thermal fusion of a thermoplastic resin sheet or film and a flange of a container, the flange and thermoplastic resin sheet or film and the flange are pre-heated  by  respective  container  and  sheet  material pre-heaters.
Patent CA-2102237-A1 (CA)
Title: Method and Apparatus for Immobilized Enzyme Reactions
Inventor: AFEYAN NOUBAR B
IPC: C12N11/00
Filed: 1992-04-09
Abstract: Perfusive matrices (10) useful in immobilized enzyme reactors (IMERs) are disclosed. The matrices define first and second interconnected sets of pores and an intraparticle high surface area (18) capable of immobilizing enzymes, in fluid communication with the second set of pores. The first and second sets of pores are embodied, for example, as the interstices (12) among particles and throughpores (14) within the particles. The particles also contain diffusive transport pores (16). The dimensions of the first and second sets of pores are such that, at fluid flow rates and pressure drops practical for immobilized enzyme reactions, convec-tive flow occurs in both pore sets, and the convective flow rate exceeds the rate of diffusion of the substrate and product to and from immobilized enzymes within the particles. This approach allows rapid enzyme loading and substrate conversion reactions at optimal catalytic flow rates.
Patent CA-2103400-A1 (CA)
Inventor: LIU ANDREW T C
IPC: A61K6/896
Filed: 1993-11-18
Abstract: Dental composition,  product and process using a silicon containing abrasion resistant material.   The dental products formed are abrasion resistant and self-lubricating across their entire cross sections.  Dental compositions  useful  for  forming  dental  products  in accordance with the invention preferably includes an ethylenically unsaturated silane.   The composition is formed into a dental prosthesis, such as an artificial tooth, inlay, onlay, facing, crown or bridge.
Patent CA-2103734-A1 (CA)
Title: Self-powered heat transfer fan
Inventor: REID RANDALL H
IPC: F24D18/00
Filed: 1993-08-10
Abstract: A self-powered fan for circulating air for use in cooperation with a heat source, said fan comprising a heat transfer member having a heat transfer surface operably cooperable with said heat source, electric motor, fan blades, thermocouple means cooperable with said electric motor and said heat transfer member, the improvement comprising said heat transfer member being of suitable size, mass and shape as to provide a suitable temperature gradient between said thermocouple means and said heat source to operably allow of sufficient heat transfer from said heat transfer member to said thermocouple means to generate sufficient power to effect rotation of said blades but not to cause thermal damage to said thermocouple means.
Patent CA-2105495-A1 (CA)
Title: Shelf device for a refrigerator
Inventor: JUN GUN S
IPC: A47B96/06
Filed: 1993-09-03
Abstract: ABSTRACT A shelf device for a refrigerator comprising a bracket or a guide rail horizontally mounted on a back wall of a refrigerating chamber, and a shelf assembly coupled to the bracket or the guide rail so that a user can horizontally displace or slide the assembly to a desired position depending upon a size of an object to be stored.
Patent CA-2107191-A1 (CA)
Title: Shoe with cushioning means
Inventor: PETERS ALAN B
IPC: A43B13/18
Filed: 1993-09-28
Abstract: TITLE:SHOE WITH CUSHIONING MEANS                      ABSTRACT OF THE DISCLOSURE   A shoe which includes an outersole formed with a pair of recesses in its upper surface. One recess is in the forefoot area and a second recess is disposed in the heel area. A shoe upper is affixed to the outer upper peripheral edge of the outersole. A separable flanged heel plug is disposed in the heel recess. An innersole having a depending forefoot extension occupies the forefoot recess when the innersole overlays the upper surface of the outersole. The plug and the extension are of materials that provide comfort and cushioning and absorb impact.
Patent CA-2107523-A1 (CA)
Title: Plural component delivery system
Inventor: LANGEMAN GARY D
IPC: B05B7/32
Filed: 1993-10-01
Abstract: An apparatus and method for mixing and delivering plural liquid components in a selected volume ratio. For each component, a separate motor drives a separate rotary gear pump that delivers the component to a common mixing and delivery device (spray gun). The speed of each motor, and correspondingly the volume of fluid delivered by that pump, is determined by a respective programmable computer. The individual computers are interlinked, with one master computer and the rest slave(s).  Desired motor speeds are input into the computers in a selected ratio. A change in the speed of the master motor therefore produces a corresponding change in the speed of a slave motor according to the ratio. Actual motor speed is monitored and transmitted to the respective computer for feedback control. A simple manual ratio test is provided for calibration of the system. Each pump is magnetically coupled to its respective motor drive shaft.
Patent CA-2107947-A1 (CA)
Inventor: PAPINEAU LOUIS
IPC: A61G12/00
Filed: 1993-10-07
Abstract: ABSTRACT OF THE DISCLOSURE      A bag support for fitting on hospital carts.  The support includes a body having tabs and slits therein for frictionally retaining at least a portion of the bag.  As the bag is filled with material, the portion engaged self-tightens within the tabs and slits.
Patent CA-2109266-A1 (CA)
Title: Method of and system and apparatus for automatically creating, identifying, routing and storing digitally scanned documents
Inventor: SCHMID EDWARD
IPC: H04N1/00
Filed: 1993-10-26
Abstract: A novel method and system enabling a computer to identify the beginning and end of a logical group of digitally scanned pages, most commonly a multipage document, through the use of cover pages or sheets containing machine-readable information about where the document should be routed over a computer network, how to set scanning parameters in the scanner, and additional operations to perform, greatly increasing the efficiency and simplicity of creating, routing and processing scanned image documents without operator or user intervention and thereby enabling increased use of scanners in offices and the like.