baber/WOPTO huggingface dataset:
Patent CA-2054668-C (CA)
Inventor: GUCKEL HENRY
IPC: G01L13/06
Filed: 1991-10-31
Granted: 1996-07-02
Abstract: Microminiature pressure transducers are formed on semiconductor substrates such as silicon and include a membrane which spans a cavity over the substrate, with the membrane being mounted to and sealed to the substrate at the peripheral edges of the membrane.  The bottom of the cavity forms an overpressure stop to prevent over deflections of the membrane toward the substrate.  An overpressure stop formed as a bridge of a material such as nickel extends above the membrane and is spaced therefrom to allow the membrane to deflect freely under normal pressure situations but prevent over deflections.  The thickness of the polysilicon membrane and the spacing between the membrane and the overpressure stops is preferably in the range of 10 micrometers or less, and typically in the range of one micrometer.  The overpressure stop bridge is formed utilizing deep X-ray lithography to form a well-defined bridge structure.  The gap between the membrane and the bottom surface of the bridge is established with a sacrificial layer, such as a polyimide film, which dissolves in a solvent.  The transducer is formed utilizing processing techniques which do not affect the performance of the membrane as a pressure sensor and which allow the substrate to have further micromechanical or microelectronic devices formed thereon.
Patent CA-2059467-C (CA)
Title: Flux trapped superconductor motor and method therefor
Inventor: LLOYD JERRY D
IPC: H02K55/04
Filed: 1992-01-16
Granted: 1997-03-04
Abstract: A motor (10) comprises a stator (14) having an associated stator winding (24) formed of a conventional material such as copper, or of a superconductive material.  A rotor (12) for the motor is also formed of a superconductive material.  The rotor is placed in a cryostat (16) and cooled from a first temperature which is above a critical level to a second temperature which is below the level.  The stator is placed in a second and separate cryostat (18) and the stator winding is energized while the the rotor temperature is being lowered to below the critical level.  Once the superconductive material of the rotor has been cooled to a level below the critical level, the stator winding is de-energized.  Currents are now induced in the superconductive material of the rotor to trap or maintain magnetic flux therein.  Thereafter, the rotor acts as a permanent magnet so long as it is maintained below the critical temperature.
Patent CA-2062825-C (CA)
Title: Method and apparatus for sorting articles with small density differences utilizing a flotation stream
Inventor: ZALTZMAN ARTHUR
IPC: B03B5/40
Filed: 1990-05-23
Granted: 1996-07-16
Abstract: A method and apparatus for sorting articles (30, 32) with small density differences utilizing a flotation stream (93) which continuously flows through a trough (88) to effect the separation of a mixture (28) of articles (30, 32) having small density differ-ences into several groups (30a, 30b, 30c, 30d).  Each density group (30a, 30b, 30c, 30d) of the mixture (28) of articles to be separat-ed is introduced at the head of the flotation stream (93) at a selected depth. In one embodiment, the flotation stream (93) may be comprised of a fluidized bed (94) which is created by forcing a gas upwardly through a fluidization medium (96) such as sand. Once the mixture (28) of articles (30, 32) is introduced at the selected depth into the flotation stream (93) near the head of the stream, since the density of the flotation stream (93) is greater than the density of the articles (30), the articles of lesser density (30a, 30b, 30c, 30d) begin to ascend toward the top of the flotation stream (93) while at the same time the articles (30, 32) are car-ried downstream by virtue of the velocity of the flotation stream (93), thereby effecting a spacial separation of the articles (30, 32) based upon their differing densities.
Patent CA-2073888-C (CA)
Inventor: SEARLES SHAWN
IPC: H03K5/13
Filed: 1992-07-15
Granted: 1996-10-29
Abstract: An apparatus is provided for delaying digital data signals by fixed amounts within an integrated circuit.  A delay lock loop includes an adaptive delay line, a phase detector and an integrator.  The integrator provides control signals cp, cn for controlling the delay line, in dependence upon the relative phase of a reference clock signal ?o and a delayed clock signal ?n. The delay line includes a plurality of delay cells.  By maintaining a phase relationship ?n = ?o + 360° one clock cycle, Tc, delay through the delay line is provided.  Thus each delay cell provides Tc/n delay.  By placing identical cells in signal paths elsewhere on a chip, fixed delays can be introduced which are controlled by the delay lock loop.  A harmonic lock detector connected to a plurality of clock phase taps from the delay line detects harmonic lock conditions for second through tenth harmonics, resetting the delay lock loop in the event of harmonic lock.
Patent CA-2076600-C (CA)
Title: Trilobal and tetralobal filaments exhibiting low glitter and high bulk
Inventor: TUNG WAE-HAI
IPC: D01D4/06
Filed: 1992-08-21
Granted: 2002-01-29
Abstract: Synthetic filaments having a trilobal or tetralobal cross-sectional shape with substantial convex curves, connected by cusps, along the contour of each lobe. The filaments are especially suitable for making carpets which exhibit low glitter, high bulk, and resistance to fibrillation.
Patent CA-2083322-C (CA)
Inventor: ZABETAKIS GEORGE
IPC: G01N35/10
Filed: 1992-11-19
Granted: 2004-04-13
Abstract: Sample liquid analysis apparatus and method are provided, and comprise the formation and supply to a conduit of a stream of successive sample liquid test packages, and the repeated bi-directional displacement of the sample liquids test package stream in the conduit through one, or a plurality of spaced, sample liquid analysis apparatus which are operatively associated with the sample liquid conduit to provide for repeated, time-spaced analyses in turn of the sample liquids in each of the sample liquid test packages. Each of the sample liquid test packages comprises a first segment of a sample liquid and a first reagent liquid, and a second segment of a second reagent liquid spaced from the first segment by a different fluid in the test package. The conduit includes a portion which is operable to combine the respective first and second segments of each of the sample liquid test packages upon the flow of the same therethrough to commence the sample and reagent liquids reaction for sample liquid analysis; and the, or at least one of the, sample liquid analysis apparatus is disposed upstream in the conduit of this conduit portion to enable independent analyses of the respective first and second segments of the sample liquid test packages in turn prior to the combination thereof. Precisely operable, positive displacement pumping, operatively associated with the conduit inlet, or with both the conduit inlet and outlet and, in that event, precisely coupled to provide for differential pumping, is utilized for the formation and supply of the sample liquid test packages in turn to the conduit to form the sample liquids test package stream therein, and for the repeated bi-directional displacement of that stream in the conduit. An isolation liquid which is immiscible with the sample and reagent liquids, and which preferentially wets the walls of the conduit to the substantial exclusion of those liquids, is introduced to the conduit to minimize the adherence of the sample liquids thereto, thereby minimizing sample liquid carryover, and maximizing sample liquids analyses accuracy.
Patent CA-2083898-C (CA)
Title: Sausage dispensing adapter
Inventor: FULKS HENRY JOEL
IPC: B05C21/00
Filed: 1992-11-26
Granted: 2000-05-09
Abstract: An adapter for use in an extrusion device can use sausage skin packaged sealant-type extrudable materials. A sausage skin package is inserted into the adapter which is, in turn, inserted into an extrusion device, such as a caulking gun. The adapter has four pieces, a cylindrical tube, a plunger, a removable nozzle base and a removable nozzle tip. The adapter can be designed to be reversible where a sausage is inserted between the plunger and the nozzle base, force is applied to the plunger by the extrusion device forcing the sealant-type material from the sausage package and after the material is expelled, a wad of package skin is removed, a new sausage package is inserted into the open end of the tube and the removable nozzle base is attached to the tube and the dispensing operation can be continued.
Patent CA-2087856-C (CA)
Inventor: PERRY ROBERT MAIDENS
IPC: B21B39/08
Filed: 1991-07-23
Granted: 2002-01-29
Abstract: In the manufacture of metal strip, the strip is cast in a caster (1) and it is then passed through a temperature control zone (5) where the temperature of the strip is brought to a predetermined level. To adjust the temperature of the strip, as its speed of passage through the temperature control zone varies, the temperature control means must be adjusted, Until operating conditions have stabilised, it is necessary to hang a part of the strip leaving the caster in a loop so as to accommodate variations in operating conditions.
Patent CA-2087901-C (CA)
Inventor: FOWLIE ROBERT G
IPC: B24D3/28
Filed: 1993-01-22
Granted: 2002-12-17
Abstract: The method and apparatus enables enlarged multi-phase globules 65 to be firmly and non-detachably mounted on tip end portions of flexible hone bristles 55, By one method aspect, a first coating 90 of an at least semi-liquid, controllably hardenable adhesive matrix material 85a is applied to each tip end portion 60 of the bristles in a desired lamina thickness, as determined in part by the natural retention characteristics of the coated bristle tip end portions 60. each first coating 90 is fixed and immobilized relative to its bristle tip end portion 60 whereby to substantially inhibit and prevent displacement of excess liquid, or partly liquid portions of said matrix material 85a from occurring on, and along, the bristle tip end portion 60. A quantity of usually dry particles of finely-divided abrasive material 115 is brought into mating and bonding contact with said coating 90 while it is still in at least partially semi-liquid form, thereby causing the effective picking-up of abrasive particles by said matrix material and the effective intermixing thereof into an effective two-phase, composite abrasive-matrix material 90 + 115. Said bristle tip end portions 60, carrying said coating are then subjected to the required physical conditions needed for hardening and curing said composite abrasive-matrix material on said bristle tip end portions, to a desired extent. The method permits quick and efficient mass production of flexible abrasive hones. Figs.1 and 8.
Patent CA-2088757-C (CA)
Title: Anchoring device for tubing string
Inventor: OBREJANU MARCEL
IPC: E21B23/01
Filed: 1993-02-03
Granted: 1994-09-27
Abstract: A device anchors a tubing string within a stationary well casing against rotation in a predetermined angular direction. A housing is installed in-line in the tubing string. Anchoring mechanisms are spaced circumferentially about the housing. Each anchoring mechanism includes a recess and an anchoring member free-floating within the recess. The anchoring member has a fulcrum portion and a bite portion external to the recess. Retaining rings partially overlaying the recess prevent the anchoring member from escaping. A spring urges the anchoring member against the retaining rings and urges the bite portion to contact the well casing such that rotation of the tubing string displaces the anchoring member. Rotation of the tubing string in the predetermined direction seats the fulcrum portion in a seating structure within the recess and causes the bite portion to bite into the well casing, locking against further rotation. Rotation of the tubing string in an opposite direction displaces the anchoring member to a non-locking orientation in which the bite portion slides relative to the well casing.
Patent CA-2094374-C (CA)
Title: Polyesters from terephthalic acid, 2,6-naphthalenedicarboxylic acid, hydroquinone and 4,4'-biphenol
Inventor: JACKSON WINSTON J JR
IPC: C08G63/191
Filed: 1991-11-15
Granted: 1997-10-07
Abstract: Disclosed are melt-processable wholly aromatic polyesters prepared from tereaphthalic acid, 2-6-naphthalenedicarboxylic acid, hydroquinone and 4,4'-biphenol.
Patent CA-2104215-C (CA)
Title: Radio receiver for forming a baseband signal of time-varying frequencies
Inventor: SANECKI THEODORE T
IPC: H03D7/16
Filed: 1992-11-06
Granted: 1998-06-23
Abstract: A radio receiver, and associated method therefor, for generating a baseband signal having signal component portions of time-varying frequencies. The oscillating signal generated by at least one of the low oscillators of down-mixing circuitry (680, 744, 750) of the receiver is modulated by a low-frequency signal thereby to cause the resultant, baseband signal to be comprised of signal component portions of time-varying frequencies. Because the signal component portions of the baseband signal are of time-varying frequencies, attenuation of such signal component portions and resultant distortion of the received signal, as a result of undesired notches in the frequency response of a radio receiver is avoided.
Patent CA-2105776-C (CA)
Title: Moving bed process for carbothermally synthesizing nonoxide ceramic powders
Inventor: HENLEY JOHN P
IPC: C01B31/36
Filed: 1992-02-27
Granted: 2002-04-23
Abstract: Carbothermally reduce a metal oxide to its corresponding metal nitride or metal carbide powder in a vertical gravity flow reactor (11) by adding prec-ursor pellets containing the metal oxide, a thermally decomposed binder mate-rial, and carbon or a source of carbon, directly to a heated reaction zone (31) within the reactor. The pellets form a pellet bed (19). The top of the bed (18) must be maintained within the heated reaction zone. The binder material is a blend of wheat and corn starches. The binder material thermally decomposes to a carbonaceous residue that functions both as an additional source of car-bon and as a binder for the precursor pellets.
Patent CA-2107970-C (CA)
Title: Endoscopic surgical stapling instrument with pivotable and rotatable staple cartridge
Inventor: ALLEN EUGENE DAVID
IPC: A61B17/28
Filed: 1993-10-07
Granted: 2004-04-13
Abstract: A surgical stapler is provided which is insertable through an endoscopic tube to enable a surgeon to staple a hernia patch to tissue inside a body cavity. The endoscopic surgical stapler includes a staple cartridge pivotally mounted on the distal and of a support tube extending from a handle provided with an actuator mechanism for actuating a staple forming mechanism inside the staple cartridge to fasten staples to the tissue.      The staple cartridge is adjustable to different angular orientations relative to the support tube.      The staple actuator mechanism is operable to actuate the staple cartridge in any of the angular orientations. The support shaft is rotatable about its longitudinal axis relative to the handle to adjust the rotational orientation o~ the support shaft and the staple cartridge. The staple cartridge is rotatable about its longitudinal axis relative to the support shaft to adjust the rotational position of the staple cartridge relative to the support shaft. Separate actuator mechanisms are provided on the handle to control the pivotal movement of the staple cartridge, the rotation of the support shaft, and the rotation of the staple cartridge relative to the support shaft.
Patent CA-2109755-C (CA)
Inventor: FRENCH JOHN BARRY
IPC: H03F3/30
Filed: 1993-11-23
Granted: 2004-11-02
Abstract: An improved composite bridge amplifier having four semiconductor output transistors in a bridge configuration. The control terminals (gates or bases) of the transistors are controlled by an input signal which is amplified in a phase sputter and voltage gain stage and then applied to the control terminals. The output terminals of the transistors receive a power signal which varies with the input signal at a level sufficient to maintain headroom above the output signal but to reduce power dissipation in the transistors. The power signal is produced by a switch connected between a floating power supply and a filter and operated at e.g. 200 kHz. The switch is operated by a pulse width modulated (pwm) signal derived from the absolute value of the input signal. The improved composite bridge amplifier further includes a proportional integral controller coupled between the output of the filter and the pulse width modulator to provide closed loop feedback.      The output of the filter is aligned with the input signal by a phase shifter which is connected to the proportional integral controller.   Because the phase shifter eliminates the need for a time delay in the input signal (i.e. audio) path, high performance can be achieved with reduced cost. To further improve the performance of the amplifier at high frequencies, the improved amplifier includes a peak detector circuit for tracking a high frequency input signal and compensating the pwm signal. The improved amplifier also features thermal overload protection and output current overload protection circuits which protect the output stage by reducing the headroom. Because the protection circuits do not "clip" the output signal, the effect to the listener is minimized.
Patent CA-2118670-C (CA)
Title: Pharmaceutical compositions in semisolid form and a device for administration thereof
Inventor: ROSS MALCOLM STEWART FRANK
IPC: A61K/
Filed: 1994-03-09
Granted: 2002-10-22
Abstract: A pharmaceutical formulation in semisolid form useful for systemic treatment of an illness is disclosed, as well as a device for containing and measuring a unit dose of the formulation comprising a squeezable container having a cap with a spoon attached thereto and means for resealing the squeezable container after use. A child proof closure useful for the device is also disclosed.
Patent CA-2119116-C (CA)
Title: Melange a dessert en gel a prise rapide
Inventor: HEMBLING MARK VICTOR
IPC: A23L21/10
Filed: 1994-03-15
Granted: 2004-10-26
Abstract: Mélange sec pour produire un gel à prise rapide d'une texture aussi souhaitable que les gels de gélatine. Le mélange contient comme composants du potassium aggloméré ou de l'alginate de sodium, du sel de calcium aggloméré, des agents édulcorants, des acides alimentaires, des tampons et de préférence anti-oxydants. Les agents édulcorants peuvent être des sucres, des édulcorants intenses et/ou des amidons hydrolysés.
Patent CA-2129657-C (CA)
Title: Automotive lubricant
Inventor: OSTYN MARCEL A J O
IPC: C10N10/04
Filed: 1993-02-01
Granted: 2003-07-29
Abstract: An automotive lubricant comprising a white oil basestock and one or more additives, at least one additive being an antioxi-dant. The white oil basestock may be blended with mineral ail and/or synthetic oil basestocks. The lubricant can be used, for ex-ample, as an engine oil, gear oil or automatic transmission fluid.
Patent CA-2132254-C (CA)
Inventor: GUISELIN OLIVIER
IPC: C03C17/36
Filed: 1994-09-16
Granted: 2003-12-23
Abstract: Transparent substrate (1), especially made of glass, provided with a stack of thin layers comprising essentially and successively starting from the substrate:     - a first layer of dielectric material (2) - a first layer with properties of reflection in the infrared, especially metallic (3)   - a second layer of dielectric material (4) - a second layer with properties of reflection in the infrared, especially metallic (5)   - a third layer of dielectric material (6) - a third layer with properties of reflection in the infrared, especially metallic (7)   - a fourth layer of dielectric material (8).   The thickness of the third layer with properties of reflection in the infrared (7) is greater than that of the second layer with properties of reflection in the infrared (5), itself greater than that of the first layer with properties in the infrared (3). <IMAGE>
Patent CA-2132349-C (CA)
Inventor: ESHHAR ZELIG
IPC: A61K35/17
Filed: 1993-03-18
Granted: 2008-12-30
Abstract: The disclosed invention relates to chimeric genes which contain a first segment encoding a single chain Fv domain of a specific antibody and a second segment encoding at least the transmembrane and cytoplasmic domains of an immune cell-trig-gering molecule such as subunits of either a T cell receptor, a T cell receptor-CD3 complex, a Fc receptor or an IL-2 receptor. Al-so disclosed is a method of treatment of a tumor using lymphocyte cells transformed with expression vectors containing the chi-meric genes.
Patent CA-2140657-C (CA)
Title: Static condition process for the preparation of phosphorus/vanadium oxidation catalyst
Inventor: BORTINGER ARIE
IPC: C07D307/60
Filed: 1993-08-24
Granted: 2003-06-03
Abstract: An improvement in the oxidation catalyst used for the partial oxidation of n-butane and containing vanadium and phos-phorus, zinc, lithium and molybdenum mixed oxides which comprises carrying out the crystallization step under static conditions which allows for more uniform conditions for crystal growth. The static conditions are maintained by refluxing the solvent during the period of crystallization.
Patent CA-2140877-C (CA)
Title: Amplification and detection process
Inventor: HARRIS RAYMOND J
IPC: C12Q1/6816
Filed: 1993-07-26
Granted: 2008-11-18
Abstract: This method for detecting a target nucleic acid sequence involves amplification and detection in the same vessel and comprises:  (a) amplification of the target nucleic sequence in a vessel which is provided with a solid phase capture probe comprising a nucleic acid sequence capable of hybridising to at least a portion of said amplified target nucleic acid sequence, said capture probe being incapable of participating or not participating in standard nucleic acid sequence amplification processes, (b) bringing a sample suspected of comprising said target nucleic acid sequence into contact with said capture probe under conditions which allow said amplified target nucleic acid sequence to be bound by said capture probe, and (c) detecting the presence of bound target nucleic acid sequence. In a further aspect, the present invention provides an assay system or kit, for detecting a target nucleic acid sequence in a sample suspected of comprising said target nucleic acid sequence, comprising: (a) a capture probe comprising a nucleic acid sequence capable of hydridising to at least a portion of said amplified target nucleic acid sequence, said capture probe being immobilised on a solid phase support which forms a part of or is insertable into a container for the sample, and said capture probe being incapable of participating in standard nucleic acid sequence amplification processes, (b) reagents for amplification of said target nucleic acid sequence, and (c) means for detecting said target nucleic acid sequence, when bound by said capture probe.