baber/WOPTO huggingface dataset:
Patent CA-2069242-C (CA)
Title: Optical switch
Inventor: DORN REIMUND
IPC: G02F1/29
Filed: 1992-05-22
Granted: 1999-04-20
Abstract: An optical switch serves to deflect an incident wave in a given, selected direction. Suited as part of an optical switch is  a transparent material in which a three-dimensional diffraction pattern can be produced by applying an electric field and by which the direction of  the wave can be changed.            An optical switch according to the invention comprises a material with nonlinear optical properties in which the three-dimensional diffraction pattern is recorded. The material forms at least a single layer (2) overlying a substrate (1). Electrodes (3- 6) are provided; by applying an electric field to these electrodes, the diffraction pattern in the layer (2) can be changed. Part of the wave incident on the layer (2) is deflected in accordance with the strength of the electric field applied between the electrodes (3 - 6).
Patent CA-2069909-C (CA)
Title: Apparatus with function of detecting position of existence of metal body
Inventor: TAKEMOTO TAKATOSHI
IPC: A63F7/02
Filed: 1991-10-04
Granted: 1996-12-17
Abstract: The present invention consists of an apparatus comprising signal sending lines (22), each of which has a folded-back shape and serves to send a current for generating a magnetic field, and signal receiving lines (26), each of which has a folded-back shape, and which are arranged at a position permitting them to be electromagnetically coupled with the signal sending lines (22) thus serving to detect a magnetic flux change caused by the approach of metal.  The plurality of signal sending lines (22) are arranged coplanarly, while the plurality of signal receiving lines (26) are arranged coplanarly.  The signal sending lines (22) and the signal receiving lines (26) are arranged with their planes held in parallel and in directions intersecting to each other, thereby constructing a sensing matrix (20).  This sensing matrix (20) is arranged in opposition to a panel along which a metal body to be detected moves, while holding there-between a space which is, at least, large enough to pass the metal body.         The signal sending means (50) and signal receiving means (40) are connected to the sensing matrix (20) so as to detect the location of the metal body.
Patent CA-2071390-C (CA)
Inventor: MOUILLE RENE LOUIS
IPC: B64C27/00
Filed: 1992-06-17
Granted: 2003-08-19
Abstract: -1-- La présente invention concerne un dispositif de liaison élastique entre deux pièces, notamment la boîte de trans-mission principale et le fuselage d'un aéronef à voilure tournante, tel qu'un hélicoptère, comportant des premier et second corps tubulaires coaxiaux interne et externe, et des moyens de rappel élastique, logés dans l'espace annulaire existant entre lesdits premier et second corps et reliant ceux-ci de façon étanche. - Selon l'invention, ledit espace annulaire (6) est séparé, par lesdits moyens de rappel élastique (7,8,9), en des première (6A) et seconde (6B) chambres remplies d'un liquide, lesdites première (6A) et seconde (6B) chambres sont en communication avec l'intérieur (17) dudit premier corps (2), à l'intérieur dudit premier corps (2), est prévu un distribu-teur de liquide (19) comportant deux pistons (20,21), reliés par une tige de piston (22) et séparés l'un de l'autre de la distance 1 séparant les orifices des première (6A) et seconde (6B) chambres, et des moyens de rappel élastique et d'amortis-sement (26,27 ; 28,29) dudit distributeur (19) sont prévus.
Patent CA-2073212-C (CA)
Title: Elevator system for a building
Inventor: POKUS IVAN
IPC: B66B9/02
Filed: 1992-07-06
Granted: 1996-01-16
Abstract: An  elevator  system  for  a  two  storey  building includes two carriages each of which is movable from the upper floor  to  the  lower  floor  and  which  are  mounted  in  a counterbalance arrangement so as to move simultaneously.  The carriages are mounted upon a single central support between the  two  carriages  and  are  carried  thereby  in  canterly arrangement projecting outwardly from the sides of the central support.    The  whole  of  the  weight  of  the  structure  is therefore  transmitted  to  the base of the  support  to avoid necessity for reinforcement of the building structure.  A door system includes four doors, two on each level.  The doors are spring biased to an open position that can be latched closed.          The  latches are automatically opened so that  the available carriage always has the door open.  Opposed doors on the two levels are connected by lever mechanism so that as the door on the lower level is closed to close the carriage, the door on the upper level is also closed to close the carriage present at  that  level.   This saves time since a carriage is always awaiting  the  potential  occupant  on  whichever  level  he approaches.
Patent CA-2085290-C (CA)
Title: Superconducting device having an extremely thin superconducting channel formed of oxide superconductor material and method for manufacturing the same
Inventor: NAKAMURA TAKAO
IPC: H01L39/14
Filed: 1992-12-14
Granted: 1997-08-05
Abstract: A superconducting device comprising a substrate having a principal surface, a non-superconducting oxide layer having a similar crystal structure to that of the oxide superconductor, a first and a second superconducting regions formed of c-axis oriented oxide superconductor thin films on the non-superconducting oxide layer separated from each other and gently inclining to each other, a third superconducting region formed of an extremely thin c-axis oriented oxide superconductor thin film between the first and the second superconducting regions, which is continuous to the first and the second superconducting regions.
Patent CA-2087883-C (CA)
Title: Beta-alethine use in cell culture and therapy
Inventor: KNIGHT GALEN D
IPC: C12N5/02
Filed: 1993-01-22
Granted: 2010-09-14
Abstract: .beta.-alethine is employed in the differentiation, phenotypic expression, and vitalization of cells, for both in vivo and in vitro applications. Particular applications include the use of .beta.-alethine in the treatment of immune disorders and diseases, especially neoplasia, and in the promotion of cell cultures.
Patent CA-2089446-C (CA)
Title: Composition for stabilizing blood plasma during pasteurization and pasteurized plasmic solution, for therapeutic purposes
Inventor: BURNOUF MIRYANA
IPC: A01N1/00
Filed: 1993-02-12
Granted: 2006-04-18
Abstract: The invention relates to a composition intended to stabilise blood plasma during pasteurisation, the blood plasma being whole or devoid of cryoproteins. The composition according to the invention makes it possible to pasteurise very large quantities of plasma (of the order of 60 litres). The invention also relates to the method for pasteurisation of the plasma using the stabilising composition. The pasteurised plasma obtained is intended for therapeutic use.
Patent CA-2097264-C (CA)
Inventor: SCHOPS MICHAEL
IPC: D04H1/46
Filed: 1993-05-28
Granted: 2004-09-14
Abstract: There are described a dimensionally stable laminate whose surfaces are formed by spunbonded webs and comprising at least two layers of spunbonded and at least one laid layer of reinforcing yarn, the laid layer or layers each being disposed between two layers of spunbonded and having a thread density of from 0.5 to 3 threads/cm, spunbonded and laid layers having been joined together by needling at about 20-70 stitches/cm2, a process for manufacturing this laminate, and its use for manufacturing roofing sheets and roof sealing sheets.
Patent CA-2105152-C (CA)
Inventor: BALUKIN RICHARD F
IPC: B60L7/24
Filed: 1993-08-30
Granted: 1997-12-02
Abstract: A microprocessor-based, electropneumatic brake control system for a locomotive having a pneumatic back-up control valve which includes a quick release valve for maintaining a release condition of the control valve during dynamic braking.  An arrangement is provided to prevent the control valve from applying during a trainline-initiated emergency application prior to the dynamic brake becoming ineffective following dynamic brake knockout, in order to avoid the possibility of a wheel skid.
Patent CA-2108910-C (CA)
Title: Coronary artery imaging system
Inventor: FELDMAN CHARLES L
IPC: A61B8/06
Filed: 1992-05-08
Granted: 2008-09-02
Abstract: A catheter (12) for measuring fluid flow in arteries without disturbing the flow and a side-looking sonic transducer for im-aging the arterial walls is inserted into a coronary artery (24) of a body (40) and is coupled at a proximal end (25) via cables (26 and 46) to external respective arterial flow circuit (18), plaque image circuit (38). At the distal end of.the catheter two sets of transducers (120 and 128) are located. Transducer (120) is electrically coupled by cable (46) to circuit (38). Sonic signals generated by transducer (120) result in acoustic echo signals reflected from plaque (28) in the walls of artery (24). Transducer (120) converts the echo signals to electrical image signals. These signals are detected and amplified in circuit (38).
Patent CA-2111736-C (CA)
Title: Surface control of well annulus pressure
Inventor: SCHULTZ ROGER LYNN
IPC: E21B34/16
Filed: 1993-12-17
Granted: 1997-01-28
Abstract: An  annulus  pressure  control  system  is  provided  for controlling annulus pressure in a well to send remote command signals to a downhole tool in the well.  The well has associated therewith a high pressure source and a low pressure dump zone.          The system includes at least one control valve having an inlet and an outlet with a variable flow restriction located between the inlet and the outlet.   One of the inlet and outlet is connected to the well annulus and the other of the inlet and the outlet is connected to one of the high pressure source and the low pressure dump zone.   A pressure sensor is provided for generating a pressure signal representative of annulus pressure.          A controller has  information  stored therein describing the command signal which is to be applied to the well and which includes at least one annulus pressure change.  The controller receives  the  pressure  signal  from the pressure  sensor  and controls a position of the variable flow restriction of the control valve in response to the pressure signal and in response to the stored information,  and thereby applies  the desired command signal to the well annulus.
Patent CA-2113966-C (CA)
Inventor: SCHMITZ HERIBERT
IPC: F24H1/28
Filed: 1994-01-21
Granted: 1997-12-30
Abstract: L'invention porte sur un chauffe-eau à gaz pouvant être installé dans un mur. L'invention comporte une chambre de combustion de laquelle proviennent des tubes à gaz de chauffage au gaz qui rentrent à l'intérieur du contenant où se trouve l'eau. Le contenant comprend des raccords pour la circulation de l'eau vers l'avant et vers l'arrière et une chambre de réception du gaz d'échappement comportant des raccords pour l'évacuation du gaz d'échappement et du condensat. Dans la pratique, un tube de chauffage au gaz allant de haut en bas et passant dans le contenant plat où se trouve de l'eau, présente au moins une poche parallèle à une large paroi arrière du contenant. Une chambre de combustion refroidie par eau, placée dans une partie supérieure du contenant, ressemble essentiellement vue de haut à une section transversale rectangulaire et plate du contenant. Une ouverture pour insérer le brûleur dans la chambre de combustion est prévue dans le plan d'une paroi avant, ou près de ce dernier. La paroi en question présente la même largeur que la paroi arrière et y est parallèle. Le modèle de chauffe-eau est extrêmement plat; il est donc simple à fabriquer et permet une production automatisée.
Patent CA-2116381-C (CA)
Title: Zero slump - loss superplasticizer
Inventor: CERULLI TIZIANO
IPC: C04B24/26
Filed: 1994-02-24
Granted: 2004-06-22
Abstract: A superplasticizing additive for concrete and other cementitious mixes with high retention of workability (low "slump loss") and low air-entraining effect, is made by terpolymers of a) (meth)acrylic acid and its salts, b)polyethyleneglycolmonomethylether-(meth)acrylate and c) polypropyleneglycol-di(meth)acrylate.
Patent CA-2119325-C (CA)
Inventor: DAHRINGER DONALD WILLIAM
IPC: H05K3/36
Filed: 1994-03-17
Granted: 1998-02-10
Abstract: Described is a plastic encapsulated electronic device having an integrated circuit unit, a lead frame and a plastic material encapsulating the IC unit and portions of the leads into a sealed package.  Each of the leads includes an inner portion adjacent the IC unit, an outer portion laying in a different plane than the inner portion, and a central portion interconnecting the inner and the outer portions. The plastic enclosure is so formed that the outer portion of each lead, except for its lowermost flat surface and a short outermost section, is embedded in the plasticmaterial. The bottom surface of the plastic enclosure is substantially coplanar with the lowermost flat surface of each lead. The short outermost portion of the outer lead portion extends beyond the plastic material for testing purposes. This arrangement provides for a robust encapsulation of the leads avoiding the prior problems of the prior art. Additionally, this device is especially useful for attaching the device to an interconnecting board by means of conductive adhesives.
Patent CA-2124429-C (CA)
Inventor: BOURKEL ARSENE
IPC: F16K31/12
Filed: 1994-05-26
Granted: 2004-01-27
Abstract: A pilot-operated servo valve design for efficient mounting in a control block has at least three main-stream ports. An opening into a control sleeve for a first main-stream port is disposed opposite an end surface of a main control piston. The main control piston has a pressure-equalizing surface disposed in a pressure-equalizing chamber, which is fluidically coupled by a pressure-equalizing duct in the main control piston to the first main-stream port. A return spring urges the main control piston toward a first axial end stop to clearly define a safety position. The valve exhibits good dynamic properties.
Patent CA-2128249-C (CA)
Inventor: GRASSIN CATHERINE MARIE THERES
IPC: A23L19/00
Filed: 1993-11-30
Granted: 2004-06-22
Abstract: The present invention discloses the use of pectinesterase to demethoxylate high-methoxylated pectins. The pectinesterase makes possible the preparation of food containing fruit or vegetables in a more efficient way. Specifically, fruit and vegetable jams, jellies, compotes and soups are prepared without or with greatly reduced sugar and pectin addition. The present invention also discloses a process for producing apple sauce comprising the use of pectinesterase.
Patent CA-2132496-C (CA)
Title: Digital exchange system with function of displaying operation state of system
Inventor: MANO HIROSHI
IPC: H04M3/22
Filed: 1994-09-20
Granted: 1999-05-11
Abstract: According to this invention, in a digital key telephone system which is connected to a digital network via a digital channel, a transmission error which has occurred on the digital channel is detected, and upon detection of the transmission error, information representing the transmission error is stored in an error table.  When a display request of a transmission error is input from a digital key telephone, error information stored in the error table is read out, the readout information is transferred to the digital key telephone, and the information is displayed on a display of the telephone.
Patent CA-2134680-C (CA)
Title: Tissue-specific implantable therapeutic agent delivery system
Inventor: GIAMPAPA VINCENT C
IPC: A61K9/22
Filed: 1993-04-26
Granted: 2004-11-30
Abstract: A system for tissue-specific delivery of therapeutic agents includes an implantable element biodegradable in situ within human tissue; a vasoinductive agent integrated into a surface of the element ; and having the therapeutic agents incorporated into the implantable element. The figure shows a method of construction of a tubu le in which there is a plurality of concentric, hollow tubules (e.g. 100, 200, 300). Upon implantation of the implantable element into the tissue, the vasoinductive agent stimulates capillary growth, facilitating delivery of the therapeutic agents to the selected tissue.
Patent CA-2135549-C (CA)
Title: Circuit arrangement for operating a low-pressure discharge lamp, typically a fluorescent lamp, from a low-voltage source
Inventor: HIRSCHMANN WALTER
IPC: H02M3/338
Filed: 1994-11-10
Granted: 2000-06-06
Abstract: To operate a low-pressure discharge lamp, typically a fluorescent lamp, from a low voltage source of, for example, between 5 and 24 V, two diodes (D1, D2) polarized to provide for current passage towards the lamp are connected between the output of a blocking oscillator and the lamp (L). At least one diode (D2) provides for preheating the lamp electrode. The other diode (D1) prevents immediate starting of the lamp; it is integrated in the circuit between the secondary winding (N2) of the blocking oscillator transformer (TR) and one lamp electrode (E1). The first diode (D2) is connected between the primary winding (N1) and the other terminal of the secondary winding (N2), and also to the other lamp electrode (E2). An additional capacitor (C4) connected, effectively, across the lamp (L) improves the starting of the lamp. The circuit is readily adaptable for association with a recharging circuit (Fig. 3) for recharging a rechargeable battery to supply the lamp.
Patent CA-2136224-C (CA)
Title: Polymerization of alpha-olefins
Inventor: BUCHELLI ALBERTO
IPC: C08F2/14
Filed: 1993-05-27
Granted: 1998-11-24
Abstract: An advanced control method is disclosed for the polymerization of an alpha olefi n in a substantially horizontal, quench-cooled, stirred bed reactor.
Patent CA-2138814-C (CA)
Title: Fiber optic gyro with damped gel suspended coil mounting
Inventor: DYOTT RICHARD B
IPC: G02B6/44
Filed: 1994-12-22
Granted: 1997-07-15
Abstract: The sensing coil of a fiber optic gyroscope is wholly or partially surrounded by a gel. The components attached to the coil, such as the directional coupler(s) and polarizer, may also be wholly or partially submerged in the gel. The gel is contained by a rigid housing, in which the inner walls of the housing form a cavity for the coil and the gel. The cavity is filled with the gel, and the gel may be bonded to the inner walls of the housing. The gel remains stiff enough to maintain the coil in a fixed position relative to the housing, and soft enough to avoid any significant effect on the h of the coil over the operating temperature range. Furthermore, the gel can be loaded with particles to adjust the specific gravity of the gel, to modify the thermal properties of the gel and to increase the viscosity of the gel for improved vibration damping. In a modified form, the optical-fiber sensing coil is positioned on a mounting surface and otherwise surrounded by the gel. Alternatively, the opticalfiber sensing coil is wound around a form that has a layer of gel on the coil-supporting surface.
Patent CA-2143015-C (CA)
Title: Alloy steel powders, sintered bodies and method
Inventor: UNAMI SHIGERU
IPC: C22C38/22
Filed: 1995-02-21
Granted: 2001-06-12
Abstract: Alloy steel powders capable of obtaining high strength in a sintered state and having excellent compacting compressibility and methods of manufacturing a sintered body.  The alloy steel powder comprises, by wt%, about 0.5 - 2% of Cr, not greater than about 0.08% of Mn, about 0.1 - 0.6% of Mo, about 0.05 - 0.5% of v, not greater than about 0.015 of S, not greater than about 0.2% of O, and the balance being Fe and incidental impurities.  The alloy steel powder is compacted and sintered at a temperature of about 1100 - 1300°C and then cooled at a cooling rate no higher than about 1°C/s in a temperature range of from about 800°C to 400°C.  The alloy steel powder can contain Nb and/or Ti and one or more of Co, W and B.  Additionally, Ni powder and/or Cu powder may be adhered and dispersed onto the surface of the alloy steel powder.
Patent CA-2146322-C (CA)
Title: Oleaginous compositions
Inventor: JACKSON GRAHAM
IPC: C10M133/54
Filed: 1993-10-05
Granted: 2004-12-14
Abstract: Compounds of formula (I) are useful as addivitives in oleaginous compositions, wherein B represents an aromatic system, A represents a hydrocarbyl group, R1 and R2 are the same or are different and each independently is an aliphatic hydrocarbyl group containing 10-40 carbon atoms, provided that one of R1 and R2 may represent hydrogen; z is at least 1 and wherein the aromatic system carries at least one substituent group which is an activating group for the ring system or a derivative of an activating group.
Patent CA-2154013-C (CA)
Title: Analytical element, composition and method using modified apo-horseradish peroxidase
Inventor: SNOKE ROY EUGENE
IPC: C12Q1/28
Filed: 1995-07-17
Granted: 2006-12-19
Abstract: Modified apo-peroxidases have been found useful in analytical methods to remove the bias caused by the presence of hemoglobin in the test specimens.      While apo-peroxidases are known to remove serum interferents, they fail to overcome the hemoglobin bias, particularly when dry coated analytical elements are used in the assays. Blocking the nitrogen atoms of the imidzolyl groups of the histidine amino acids of the apo-peroxidase prevents catalytic activity of the protein in the presence of hemoglobin.
Patent CA-2154560-C (CA)
Inventor: O'BRIEN ROBERT N
IPC: C22B19/20
Filed: 1994-01-24
Granted: 2004-11-02
Abstract: A continuous hydrometallurgical process for conversion of ore derived copper and/or zinc sulfides into recoverable water soluble sulfates is provided. The process comprises: i) contacting the ore derived copper and/or zinc sulfides with sulfuric acid and with nitric acid to form a reaction mixture in an acidic solution, ii) maintaining the reaction mixture at a temperature in the range of 110°C to 170°C while continuously mixing the reaction mixture, iii) adding sufficient sulfuric acid and nitric acid to the reaction mixture to form a light precipitate and a dark precipitate in the reaction mixture, the light precipitate comprising water soluble sulfate salts of copper sulfate, zinc sulfate and iron sulfate, and the dark precipitate being water insoluble and comprising mainly elemental sulfur and gangue, iv) introducing a source of oxygen to the reaction mixture to promote oxidation in the presence of the nitric acid, of the sulfides to sulfates and to oxidize gaseous NO x reaction products to regenerate nitric acid for the reaction mixture, v) removing the light and dark precipitates and any entrained acidic solution from the reaction mixture, vi) separating the light and dark precipitate from the acidic solution in preparation for treatment of the light precipitate for recovery of copper sulfate and/or zinc sulfate from the light precipitate, and vii) recycling the acidic solution to the reaction mixture.
Patent CA-2156250-C (CA)
Title: Clamp assembly for a spinal fixation system
Inventor: SHERMAN MICHAEL C
IPC: A61B17/70
Filed: 1994-01-26
Granted: 2004-08-03
Abstract: A spinal fixation system includes an elongated spinal rod (R) and a number of vertebral fixation elements (10), each including a vertebra engaging portion (11) and a rod engaging portion (13) formed by a pair of posts extending from the vertebra engaging portion. The vertebral fixation elements are engaged to the spinal rod each by way of a top-loading clamp (20) that permits access directly from the top of the instrumentation site for tightening the system. The clamp includes a body (21) defining an elongated bore (22) configured to receive the spinal rod (R) therethrough and a pair of threaded bores (29) from opposite top and bottom surfaces of the body, each intersecting the rod bore (22). The clamp further includes a projection (24) extending from the body terminating in a T-bar (26) having a clamping surface (27) directed inwardly toward the elongated bore configured to engage the pair of posts (14) of the vertebral fixation clement (10). A set screw (30) is threaded into one of the threaded bores (29) to bear against the spinal rod disposed within the rod bore.