baber/WOPTO huggingface dataset:
Patent CA-2126317-C (CA)
Title: A modified monocyclopentadienyl transition metal/alumoxane catalyst system for polymerization of olefins
Inventor: CANICH JO ANN MARIE
IPC: C08F4/602
Filed: 1992-12-21
Granted: 2000-03-14
Abstract: This invention comprises a catalyst system and a process using such catalyst system for the production of high molecular weight polyolefins, particularly polyethylene and higher poly-.alpha.-olefin, and copolymers of ethylene and/or .alpha.-olefins with other unsaturated monomers, including diolefins, acetylenically unsaturated monomers and cyclic olefins. The catalyst system comprises three components, a monocyclopentadienyl Group IV B transition metal compound, an alumoxane, and a modifier. The catalyst system is highly active, at low ratios of aluminum to the Group IV B  transition metal, hence catalyzes the production of a polyolefin product containing low levels of catalyst metal residue.
Patent CA-2127299-C (CA)
Title: Resin coating method for semiconductor laser device capable of coating thinly and uniformly surfaces of a semiconductor laser chip and photodiode chips with a resin
Inventor: ICHIKAWA HIDEKI
IPC: H01S5/022
Filed: 1994-07-04
Granted: 1999-01-12
Abstract: There is provided a resin coating method capable of coating thinly and uniformly surfaces of a semiconductor laser chip and photodiode chips and in a semiconductor laser device with a resin. The semiconductor laser device is fixed to a turntable with a laser beam emission window of a cap opened upward. A resin is dropped on the chips inside the cap through the laser beam emission window, and then the turntable is made to spin around a spindle which extends in a direction approximately perpendicular to the turntable to thereby flow a superfluous portion of the dropped resin toward an internal wall of the cap.
Patent CA-2131137-C (CA)
Title: High power, single-frequency tunable laser
Inventor: ZIRNGIBL MARTIN
IPC: H01S5/40
Filed: 1994-08-30
Granted: 1999-03-16
Abstract: HIGH POWER, SINGLE-FREQUENCY TUNABLE LASER            ABSTRACT A monolithically integrated laser which is rapidly tunable over a wide optical frequency range comprises a frequency router formed in a semiconductive wafer defining a tuned cavity. A control circuit applies electrical energy to predetermined controllably transmissive waveguides connecting the frequency routing device with reflective elements defined in the wafer. This tunes the laser to a desired one of a plurality of optical frequencies. Application of such electrical energy creates frequency selective pathways through the wafer able to support selected lasing frequencies. Additional optical amplifiers are formed in the frequency router to create lasing action in a preselected pathway. This laser is economical to construct and is useful in high capacity, high speed optical communications networks.
Patent CA-2137140-C (CA)
Inventor: BROD RAMAH JESSICA
IPC: C10L1/192
Filed: 1993-06-29
Granted: 2004-10-05
Abstract: Compositions comprising two or more ethylene-unsaturated ester copolymers differing in their ester proportions improve the low temperature properties of fuel oils.
Patent CA-2140966-C (CA)
Title: Pivoted hand-held cutting tool
Inventor: LINDEN ERKKI OLAVI
IPC: B29C45/14
Filed: 1995-01-24
Granted: 1998-07-07
Abstract: A hand tool for cutting, such as a pair of snips, includes a pair of opposed elongated members, each member comprising a jaw at a front end portion thereof, a handle at a rear end portion thereof, and a midportion where the members cross over each other.  A pivot unites the midportions for scissor-like movement of the handles and jaws about the pivot, and a spring biases the handles and jaws to an open position.  A releasable locking mechanism is provided to secure the handles and jaws in a closed position.  According to the invention, at least one of the members includes a metal plate having a forwardly extending blade which comprises one of the jaws and a rearwardly extending tang.  The handles, pivot and locking mechanism are each made of a moldable material molded onto the metal plate, such that one of the handles is molded onto the tang of the metal plate, and the pivot extends through a central hole in the metal plate.  The moldable material is most preferably a plastic, but other moldable substances could be employed.
Patent CA-2141649-C (CA)
Inventor: GUSTAFSSON HELMER
IPC: D04H1/4266
Filed: 1995-02-01
Granted: 2007-01-09
Abstract: The invention relates to a method for manufacturing an absorbent fibre layer (15), and an absorbent fibre layer. In the method, at least one material layer (16) consisting of a mixture of natural fibres, such as wood fibres, and plastic fibres is formed by a dry-forming technique, and at least one other material layer (17) consisting of natural fibres, or a mixture of natural fibres and plastic fibres, and superabsorbent material (18) is formed on said material layer. The fibre layer (15) is bonded with heat. The invention is characterized in that the superabsorbent material (18) is added to the second material layer (17) to be formed in connection with its dry-forming stage, after which the upper surface of the fibre layer is compacted and its lower surface is moistened and compressed by hot calendering in order to compress the material layer (16) comprising no superabsorbent material into a liquid-spreading layer.
Patent CA-2145901-C (CA)
Title: Kinescope driver apparatus with gamma correction
Inventor: KELLER ANTON WERNER
IPC: H04N5/68
Filed: 1995-03-30
Granted: 2000-02-22
Abstract: An amplifier (60) provides an amplified video signal in response to a video input signal supplied thereto. A cathode current sensor (Q3), couples an output of the amplifier to the cathode of a kinescope (20) and also provides an output current (Ik) proportional to the kinescope cathode current. A feedback path (82) applies a portion of the sensed cathode current provided by the cathode current sensor to a circuit node (65 or 63) in the amplifier for imparting gamma correction to images produced by the kinescope. In one application the cathode current is apportioned (Q3) to provide gamma correction for the kinescope and to provide automatic kinescope bias (AKB) control.
Patent CA-2145974-C (CA)
Inventor: PRESTON ROGER STEPHEN
IPC: B05B12/14
Filed: 1995-03-30
Granted: 2000-07-18
Abstract: An apparatus for coating an optical fibre 42 with a selected one of a plurality of different resins 16, 18, 20 comprises respective reservoirs 10, 12, 14 for the resins, an applicator 40 for applying a resin coating to the optical fibre and a distribution means between the reservoirs and the applicator including a valve device 34 which is operable for putting any selected one of the reservoirs in flow communication with the applicator. The valve device comprises a first body 44 defining a plurality of inlet passages 28, 30, 32 each of which is interconnected to a respective reservoir 10, 12, 14 by a respective inlet conduit 22, 24, 26 and a second body 46 defining an outlet passage 36 which is interconnected to the applicator 40 via an outlet conduit 38. A flow control device 48 is disposed between the bodies 44 and 46 and the bodies are relatively moveable for putting any selected one of the inlet passages 28, 30, 32 in alignment with the outlet passage 36. The flow control device has a first position relative to the second body 46 for blocking all of the inlet passages and the outlet passage and a second position relative to the second body 46 for allowing flow to the outlet passage from an inlet passage aligned therewith.
Patent CA-2147027-C (CA)
Inventor: MICHAELS JOHN M
IPC: E21B49/08
Filed: 1995-04-13
Granted: 2006-08-08
Abstract: A method and apparatus for downhole formation testing is provided for acquisition of a phase intact sample of connate fluid by direct or indirect pumping for filling of pressure containing sample tanks that are removable from a formation testing and sampling instrument for phase intact transportation to a laboratory facility. One or more fluid sample tanks contained within the instrument are filled with connate fluid samples in such manner that during filling of the sample tanks the pressure of the connate fluid is maintained within the predetermined range above the bubble point of the fluid sample. The sample tank incorporates an internal free-floating piston which separates the sample tank into sample containing and pressure evacuation chambers. During indirect pumping a positive displacement piston pump draws fluid from the pressure evacuation chamber and permits formation pressure to shift the separator piston as the first variable volume chamber is filled with a connate fluid sample.  The sample tank is provided with a cut-off valve enabling the pressure of the fluid sample to be maintained after the formation testing instrument has been retrieved from the well bore for transportation to a laboratory facility. To compensate for pressure decrease upon cooling of the sample tank and its contents, the piston pump mechanism of the instrument has the capability during direct pumping for increasing the pressure of the sample sufficiently above the bubble point of the sample that any pressure reduction that occurs upon cooling will not decrease the pressure of the fluid sample below its bubble point.
Patent CA-2156771-C (CA)
Inventor: LINCOLN BRADFORD C
IPC: H04L12/56
Filed: 1995-08-23
Granted: 2001-11-13
Abstract: A header and a payload in a cell are separated for transfer between a cell interface and a host memory.  The header is transferred to a control memory.  For transfer to the host memory, the control memory initially provides a host-memory region address and the region length.  The payload is recorded in such region.  The control memory also provides a second host-memory region address, and length, when the payload length exceeds the payload length in the first address region.  For transfer from the host memory to the cell interface, the control memory provides a host memory region address and the header combines the header and the payload and passes the combination to the cell interface. Cells from different sources (i.e. terminals) are scheduled at table positions dependent upon their individual transfer rates.  The cells at the scheduled positions are normally transferred in time slots corresponding to such positions. When more than one (1) cell is scheduled at the same position, one (1) cell is transferred on a preset priority basis to the corresponding time slot.  The other cells are delayed for transfer subsequently in idle time slots (i.e. no cell normally scheduled) in the same or other priorities. The cell delays for each source are accumulated to a maximum preset value.  When the cell delays accumulated for a source exceed the normal time spacing between cells from that source, a cell the source transfers a cell in an idle time slot prior to the normally scheduled time slot to compensate for such delay.
Patent CA-2157500-C (CA)
Inventor: BAZIN HERVE
IPC: A61P37/06
Filed: 1994-03-04
Granted: 2005-08-16
Abstract: The present invention relates to an LO-CD2a antibody and methods of using such antibodies or molecules that bind to a portion of the same epitope (or a portion thereof) to prevent and inhibit an immune response in human patients, preferably, where the immune response is mediated by the activation and proliferation of T-cells or natural killer cells. The administration of an effective amount of the LO-CD2a antibody to a human patient will prevent or inhibit graft rejection, graft versus host disease or autoimmune disease.
Patent CA-2159876-C (CA)
Title: Compositions renforcantes pour polymeres thermoplastiques comprenant une combinaison synergique de silice micronisee et de sel de calcium ayant des proprietes d'anti-mottage et d'ecoulement ameliorees
Inventor: BERTELO CHRIS
IPC: C08K3/00
Filed: 1995-10-04
Granted: 2008-03-18
Abstract: L'invention concerne des compositions renforçantes pour polymères thermoplastiques ayant des propriétés d'antimottage et d'écoulement améliorées, qui comprennent un additif choc et une combinaison synergique comprenant une silice micronisée et au moins un sel de calcium. Ces compositions conviennent tout particulièrement au renforcement du PVC.
Patent CA-2160027-C (CA)
Inventor: GELL MICHAEL ANTHONY
IPC: H04L12/56
Filed: 1994-04-19
Granted: 2000-04-04
Abstract: A neural network based on the Hopfield model is used to operate a high speed packet switch, particularly for use in a broad band switching system. The optimisation parameters are established in a novel methodical way, and imposed attractors arc used substantially to increase the speed of convergence. To reduce the likehood of local minima being found, noise is introduced into the system by varying a parameter of the neuron transfer function from iteration to iteration.
Patent CA-2161435-C (CA)
Inventor: GOLDSMITH ROBERT M
IPC: B65D85/50
Filed: 1994-05-18
Granted: 2006-01-10
Abstract: A food contamination detector comprises an indicator (16) bound to a substrate (20), wherein the indicator is in communication with juices from food (12) to be tested for the presence of a toxin. A means for changing the color of the indicator when the toxin is present in the juices from the food is provided to indicate that the food is contaminated.
Patent CA-2166139-C (CA)
Inventor: SUZUKI MAKOTO
IPC: H04J3/07
Filed: 1995-12-27
Granted: 1999-02-23
Abstract: On transferring a tributary unit (TU) from an input frame of an input signal (10) onto an output frame of an output signal (11), a recognition circuit (14) recognizes the TU of the input frame and produces not only a location signal representative of a location of the TU in the input frame but also a sort signal representative  of the sort of TU  in the input frame.  A threshold determining circuit (32) determines an optimum stuff threshold value (33) in response to the sort signal to produce the optimum stuff threshold value.  A write controller (15) controls writing of the TU of the input frame in a memory (12) in response to the location signal by supplying a write address signal (17) to the memory.          A read controller (18) controls reading of the TU out of the memory in response to a stuff request signal (19) by supplying a read address signal (23) to the memory.  A stuff execution judgement circuit (25) judges whether or not a stuff operation should be executed by comparing a phase difference between the write address signal and the read address signal with the optimum stuff threshold value.  The stuff execution judgement circuit produces the stuff request signal when the stuff execution judgement circuit judges that the stuff operation should be executed.  An output transmission signal producing circuit (29, 30) produces the output signal including the TU in the output frame.
Patent CA-2168372-C (CA)
Title: Dilation device for the urethra
Inventor: BURTON JOHN H
IPC: A61F2/94
Filed: 1994-06-24
Granted: 1999-06-15
Abstract: A device for dilating at least an obstructed portion of a urethra includes a hollow core member (24) with opposed open ends permitting urination therethrough from the bladder, a confining covering (33) disposed on the hollow member (24) having a length of at least that of the obstructed portion and having hydrophilic means (32) integrally associated therewith. The hydrophilic means (32) is capable of absorbing water and gradually expanding for at least 30 minutes whereby the outer surface of the confining covering (33) expands radially and outwardly, after insertion into the urethra, until dilation of the obstructed portion occurs to a desired diameter and configuration.  Methods for dilating an obstructed portion of the urethra and for treating benign prostatic hyperplasia are also provided.
Patent CA-2168666-C (CA)
Title: Multiple port shared memory interface and associated method
Inventor: JOFFE ALEXANDER
IPC: G06F12/00
Filed: 1994-08-17
Granted: 2001-06-12
Abstract: A multi-port shared memory system is provided which includes multiple ports for transferring data; a plurality of memory access buffers; and an interconnection matrix circuit for distributing subsets of data between the ports and the buffers.
Patent CA-2175584-C (CA)
Inventor: KELL MICHAEL
IPC: G01N33/53
Filed: 1994-10-19
Granted: 2005-07-12
Abstract: A method of monitoring compliance of a patient that has been placed on a medication maintenance program with a prescribed medication dosage by determining a normalized urine methadone concentration. An unadulterated urine sample is obtained from the patient. The urine methadone concentration and urine specific gravity are measured. The normalized urine medication concentration is calculated as a function of the measured medication concentration in the urine and the urine specific gravity. The calculated normalized urine medication concentration is compared with an expected medication concentration value for the patient for the maintenance program prescribed to determine any significant differences therebetween as an indication of noncompliance. Alternatively, a urinary-parameter normalized urine medication concentration is calculated as a function of the measured medication concentration in the urine, the urine specific gravity and at least one selected pharmacokinetic parameter of the medication. The calculated urinary-parameter urine medication concentration is compared with an expected medication concentration value for an average compliant patient for the maintenance program prescribed to determine any significant differences therebetween as an indication of noncompliance.
Patent CA-2179909-C (CA)
Title: Ligand fixant l'antigene fas
Inventor: GOODWIN RAYMOND G
IPC: C12N5/10
Filed: 1995-01-06
Granted: 2010-04-27
Abstract: L'invention a pour objet de nouvelles protéines humaines et murines appelées ligand de Fas (Fas-L). Ces protéines se fixent à la protéine de surface cellulaire connue sous le nom d'antigène Fas. L'invention a également pour objet les séquences d'ADN, les vecteurs d'expression et les cellules-hôtes transformées utiles dans la production de polypeptides de Fas-L, ainsi que les anticorps présentant une immunoréaction avec le Fas-L.
Patent CA-2185438-C (CA)
Inventor: LLOYD ROBERT
IPC: F24S20/20
Filed: 1995-03-16
Granted: 2004-02-10
Abstract: L'invention concerne un appareil et un procédé destiné à chauffer un corps de matière par des courants de Foucault induits, provoqués par le mouvement relatif d'une source de champ magnétique et du corps à chauffer. L'invention concerne également un appareil et un procédé permettant de collecter, d'accumuler et d'utiliser de l'énergie calorifique, le graphite constituant le fluide accumulateur. L'énergie solaire, l'énergie électrique et les courants de Foucault constituent les moyens de chauffage utilisés. L'invention concerne un appareil de production d'électricité au moyen d'un générateur et d'une turbine entraînée par un fluide. La vitesse de la turbine est commandée par le freinage magnétique créé par le générateur. L'invention concerne un procédé de moulage d'une lentille, dans lequel un matériau optique ramolli est coulé sous pression dans un moule comprenant plusieurs parties.
Patent CA-2185630-C (CA)
Title: Saw arbor with splined mandrel and mating, timed internally and externally splined saw blade mounting sleeve
Inventor: VALLANCE LARRY DONALD
IPC: B27B5/32
Filed: 1996-09-16
Granted: 2001-11-27
Abstract: A saw arbor formed of a mandrel and a cylindrically apertured  sleeve.    Radially  spaced  splines  are provided around  the  mandrel's  outer circumference  and around the inner circumference of the sleeve aperture.  The mandrel splines and the sleeve aperture splines are shaped and sized for slidable mating engagement of the mandrel splines with the aperture splines.  Radially spaced splines are also provided around the sleeve's outer circumference. The sleeve outer circumference splines are shaped and sized for slidable mating engagement with further splines spaced radially around a saw blade eye.  Equal numbers of equally spaced involute splines are preferably provided around the mandrel, around the inner circumference of the sleeve aperture and around the sleeve's outer circumference.   The splines can be formed to achieve 0.001" tolerance engagement between the mandrel and the sleeve, and between the sleeve's outer circumference and the saw blade eye, thus providing a high precision cutting unit.
Patent CA-2189143-C (CA)
Title: A method of modifying angiotensin receptor activity for treatment of premenstrual syndrome and mediation of pain
Inventor: DEPADOVA ANTHONY S
IPC: A61K31/54
Filed: 1995-04-28
Granted: 2011-02-01
Abstract: The present invention relates to a method of modifying Angiotensin II subtype 1 (AT1) receptor activity for the treatment of premenstrual syndrome (PMS) and the symptoms associated therewith, and further relates to a method for the treatment of acute or chronic pain mediated by the sympathetic nervous system.  The treatment includes the administration of an effective amount of an AT1 antogonist. AT1 antagonists are drugs that are capable of blocking AT1 receptors present within the body throughout the central nervous system including the hypothalamus. By blocking the AT1 receptor activity, hypothalamic nerve activity, and therefore, sympathetic nerve activity are modulated. Thus, an effective method for treating sympathetically mediated pain is provided, as well as an effective method for treating PMS. The AT1 antagonist can be used along or in combination with other drug therapies, for instance, non-steroidal anti-inflammatory drugs, antidepressants, opiod drugs, angiotensin converting enzyme inhibitors, and diuretics.
Patent CA-2199200-C (CA)
Title: Detection and protection circuit for fluorescent lamps operating at failure mode
Inventor: HUA JENKIN P
IPC: H05B41/285
Filed: 1997-03-05
Granted: 2004-09-14
Abstract: A circuit for protecting fluorescent lamps connected to a high frequency electronic ballast has a detecting bridge connected to the fluorescent lamps, an output of the detecting bridge varying linearly with a difference between a highest and a lowest voltage across the fluorescent lamps. A timer is connected to the detecting bridge output, and a trigger is connected to an output of the timer, the trigger being responsive to an over-voltage condition of a fluorescent lamp operating at failure mode. A controllable switch is connected across the fluorescent lamps, the controllable switch being controlled by an output of the trigger. The controllable switch, when closed, shorts the fluorescent lamps between their terminals, to protect the circuit when one or more fluorescent lamps are operating at failure mode or at the end of their operating life. A controller may be connected to a voltage-divided output of the detecting bridge, the output of the controller being fed back, and connected to, the high frequency electronic ballast. The ballast may then be shut down, or the output of the controller may be connected to a dimming circuit to dim the fluorescent lamps.
Patent CA-2199209-C (CA)
Title: Steam condensing apparatus
Inventor: DEBELLIS CRISPIN LAWRENCE
IPC: F28D15/02
Filed: 1997-03-05
Granted: 2000-05-16
Abstract: An air-cooled steam condenser that also uses heat pipe technology so as to provide steam tubes that are freeze proof under any ambient conditions and offer a simple approach to the management of noncondensable gases.  Steam flows through the main condenser with concurrent steam and condensate flow downward.          The heat transfer surface area and fan air flow are designed such that all of the steam does not completely condense and steam vapor continuously exits each tube row.  This continuous flow of steam vapor purges these rows of noncondensable gases.   The excess steam flows into the lower header to a secondary condenser section that utilizes heat pipes.  In the secondary condenser section,  the excess steam condenses on the evaporator side external surface of the heat pipes.  The noncondensable gases that remain in the lower header are vented with an air removal system similar to conventional condensers.   Condensate in the lower header is collected for reuse in the power generation cycle.