baber/WOPTO huggingface dataset:
Patent CA-2017060-C (CA)
Title: Process for manufacturing a flat, fibrous, supple substrate, difficult to tear, and substrate obtained
Inventor: MORA FERNAND
IPC: D21H13/26
Filed: 1990-05-17
Granted: 1997-06-24
Abstract: This invention relates to a process for manufacturing a flat, fibrous, supple substrate, difficult to tear, said process consisting in: preparing by fibrillation natural cellulosic fibers until their drainability is greater than 60° Schopper-Riegler; mixing in water a batch of cellulosic fibers thus refined and at least 30% by weight on dry matter of artificial fibers, with respect to the whole quantity of said artificial and cellulosic fibers; diluting the mixture obtained; and producing a substrate sheet from a machine supplied with the mixture.  The invention is more particularly applicable to the manufacture of envelopes and sachets.
Patent CA-2017206-C (CA)
Title: Sputtering apparatus with a rotating magnet array having a geometry for specified target erosion profile
Inventor: HELMER JOHN C
IPC: H01J37/34
Filed: 1990-05-18
Granted: 2000-04-25
Abstract: A magnetron sputtering apparatus includes a rotatable magnet. At least a portion of the centerline of the magnet lies on a curve defined by   where ~ (u) is a preselected erosion profile. When stationary, the magnet generates a localized magnetic field of approximately constant width. In operation, when the magnet is rotated, it generates the preselected erosion profile in the target. The preselected erosion profile may be constant.
Patent CA-2019646-C (CA)
Title: Mandrel holds expendable core in casting die
Inventor: KOCH BYRON W
IPC: B22D17/24
Filed: 1990-06-22
Granted: 1995-08-15
Abstract: This disclosure concerns a casting die for a cylinder, including engine blocks having a plurality of cylinders such as for internal combustion engines, including an expendable core for forming a jacket around the cylinders. This core has a printout portion at one end of the cylinder which is held in place by a cooperating flange on a mandrel that fits inside the cylinder. This mandrel may hold a liner for the cylinder. A dowel is provided in one of the die parts for insertion into the hollow mandrel. The mandrel is held in position by being clamped between the two opposing die parts, and the flanges of the core printout portion may be loosely held in the printout cavity of one of the die parts which preferably also contains one or more locating pins for bridging at least part of the gap between the printout portion and the printout cavity in the die for better positioning the core in the die. The core and mandrel may be assembled outside the die before being placed on the dowel, and after the casting is made, the mandrel and core are removed with it and then separated so the mandrel can be reused. For forming plural cylinders in an engine block, a secondary mandrel frame may be employed for further supporting the separate mandrels for each cylinder and the plural cylinder expendable core by holding the flanged printout portion of the core between the flanges on the separate mandrels and the secondary mandrel frame. In casting the plural cylinders of a V-engine block, retractable dowels permit the employment of die parts and slides that move only at right angles to each other.
Patent CA-2021993-C (CA)
Title: Impurity doping method with diffusion source
Inventor: NISHIZAWA JUNICHI
IPC: H01L21/225
Filed: 1990-07-26
Granted: 2000-03-28
Abstract: According to the inventive new method of doping impurity, a chemically active semiconductor surface is covered with an adsorption layer composed of impurity element which forms a dopant in the semiconductor or composed of compound containing the impurity element.      Thereafter, solid phase diffusion is effected with using the adsorption layer as an impurity diffusion source so as to form an impurity-doped region having a desired density profile in the depth direction.
Patent CA-2022891-C (CA)
Inventor: HOGAN JOSEPH MICHAEL
IPC: F16L13/10
Filed: 1990-08-08
Granted: 2000-04-18
Abstract: A secondary containment pipe system disposed around a primary pipe system and comprising a joint that is divided along a central parting plane and has laterally projecting flanges that form internal passages for adhesive sealing cement, that is injected through ports while the joint is clamped together around secondary containment pipes. The joint has pipe sockets that have internal grooves that also are filled with injected cement, thus forming a continuous, uninterrupted seal around the interior of the joint, and also has spillover grooves and wells for minimizing leakage, and lateral aligning surfaces. The clamping means are C-shaped clips that can be left in place indefinitely. The secondary containment pipes also are divided, being formed by elongated pipe elements fitted together around the primary pipes and having snap-latching coupling means along their abutting edges. One embodiment has internal reinforcing flaps that extend across the abutting edges and define internal sealing passages along the coupling means to be filled with injected adhesive cement through external ports, and also has means along the free edges for holding the flaps in place. A second pipe embodiment has tongue-and-groove couplings along thickened edges, and internal passages along the couplings in the form of enlarged coupling grooves, and an external reinforcing strip is provided for optional use in pressurized systems.
Patent CA-2023288-C (CA)
Title: Fuel tank
Inventor: BRAUN STEPHEN A
IPC: B60K15/03
Filed: 1990-08-15
Granted: 1994-04-05
Abstract: FUEL TANK Abstract of the Disclosure A fuel tank usable with lawn mowers, snowblowers and similar small powered equipment is provided.  The polyethylene tank is rotationally molded and includes several stepped ledges inside which serve to indicate the proportionate volume of fuel remaining in the tank.  A wide mouthed fuel inlet is provided to permit visual observation of the fuel level inside the opaque tank in relation to the stepped ledges.
Patent CA-2024134-C (CA)
Title: Hydrogen plasma passivation of gaas
Inventor: GOTTSCHO RICHARD A
IPC: H01L21/306
Filed: 1990-08-28
Granted: 1993-10-05
Abstract: Abstract of the Disclosure Hydrogen Plasma surface passivation of III-V Semiconductors is critically dependent on exposure time and pressure because of competition between plasma passivation and damage. Proper control of pressure according to the invention yields reproducible and stable passivation. Improved passivation is obtained using high pressure hydrogen plasmas, i.e. above 1 Torr.
Patent CA-2024762-C (CA)
Inventor: WILLIAMSON GRANT J
IPC: G09G5/02
Filed: 1990-09-06
Granted: 2001-07-03
Abstract: In the method and apparatus of the present invention, dithered images are composited with separately rendered undithered images. The dithered image is first transformed back to its unquantized state to include the full range of intensity values by performing a back-transformation process which translates the quantized or dithered value back to its original intensity value. The back transformed dithered image is then combined with the separately rendered, but undithered image using the technique of compositing. The composited image is then dithered to a quantized representation and stored in the frame buffer for subsequent display.
Patent CA-2025671-C (CA)
Title: Starch graft polymers
Inventor: NGUYEN CHARLES C
IPC: C08G85/00
Filed: 1990-02-08
Granted: 1997-12-16
Abstract: A stable aqueous polymeric dispersion comprising a graft copolymer of thinned, gelatinized starch and one or more vinyl grafting monomers, the vinyl monomers including at least 10% by weight 1,3-butadiene is disclosed.  Also disclosed are paper coating color compositions comprising the polymeric dispersion and pigments and improved high gloss papers coated with the coating color compositions.
Patent CA-2026920-C (CA)
Title: Air bag restraint system with venting means
Inventor: MAHON GEOFFREY L
IPC: B60R21/231
Filed: 1990-10-04
Granted: 1997-10-07
Abstract: An air bag assembly is disclosed with an inflator assembly for generating gases with particulate byproducts, and a bag assembly with a gas permeable portion. The gas permeable portion vents gases from the bag at a preselected rate to eliminate injuries from secondary collisions of a passenger with the hag.          The permeable portion also filters the gases to protect the passenger from the particulate by products.
Patent CA-2027831-C (CA)
Inventor: TARKA STANLEY M JR
IPC: A23L27/30
Filed: 1990-10-17
Granted: 2001-04-03
Abstract: The present invention relates to novel monosaccharide sweeteners which are capable of acting as laxatives when administered in dose-effective amounts. The present invention also contemplates monosaccharides with laxative properties which have a natural carbohydrate structure. More specifically, the present invention contemplates monosaccharide substances capable of producing laxative effects in humans and having the advantages of being only minimally absorbed from the intestine; and having osmotic laxative effects on the small bowel and colon. The present invention allows for improved laxative formulations with increased palatability and better dosing for all age groups. The present invention can be used to induce mild taxation six to ten hours after ingestion.
Patent CA-2029082-C (CA)
Title: Viscous liquid processor
Inventor: NISHIMI HARUYUKI
IPC: B01F27/73
Filed: 1990-10-31
Granted: 1999-12-21
Abstract: A viscous liquid processor comprising a low speed shaft and a high-speed shaft extending in parallel within a casing, and a plurality of agitator blades fixed on each of the shafts and spaced along its axial direction so that the blades on one shaft enter the spaces between the blades on the other shaft, wherein each of the agitator blades is generally formed in a thick disk-like configuration having a plurality of thick blade members, such,a thick blade member having a parallelogrammic cross section. With this simple arrangement, delivery and shearing of highly viscous liquid can be performed to improve the agitation and stirring effects.
Patent CA-2029856-C (CA)
Title: Electrically controlled fitting
Inventor: HOCHSTRASSER FERDINAND
IPC: F16K31/40
Filed: 1990-11-13
Granted: 1995-02-14
Abstract: The fitting has in each case a hydraulically operable shutoff valve (40, 42) for hot and cold water. The diaphragm-shaped closure part (56) interacts with the valve seat (52). Provided on the side opposite the valve seat (52) is a pilot control space (60) which is con-nected through the passage (62) to the annular channel (48) and the corresponding feedline (20). Via control lines (86'), each pilot control space (60) is connected to the outlet line (24) via an auxiliary valve (70'). The two auxiliary valves (70') are constructed on a ceramic disk valve (72) and can be operated jointly. When the auxiliary valves (70, 70') are closed, the pressure in the pilot control space (60) corresponds to the pressure in the annular channel (48), the shutoff valves (40, 42) are closed. By rotating the operating shaft (86) the two auxiliary valves (70') are opened, by which means the pressure in the pilot control spaces (60) drops. The closure part (56) is lifted from the relevant valve seat (52) and the shutoff valves (40, 42) are opened. When the auxiliary valves (70') are closed by rotating the operat-ing shaft (86), the pressure in the pilot control spaces (60) rises again, by which means the shutoff valves (40, 42) are closed. The joint operation of both shutoff valves (70, 70') requires extremely little energy.
Patent CA-2038840-C (CA)
Title: Infusion pump with dual position syringe locator
Inventor: VOSS LAVEILLE
IPC: A61M5/145
Filed: 1991-03-22
Granted: 1994-11-15
Abstract: An   improved   infusion   pump  is  provided   for controlled delivery of medication from a syringe to a patient,  wherein  a  pump  housing  includes  a  syringe chamber and associated lock members for receiving and supporting  the  syringe  in  one  of  two  different positions.  The syringe includes a medication-containing barrel connected to a luer fitting at a nose end thereof by a luer neck of reduced cross sectional size.  In one position, the syringe seats into the chamber with the luer neck protruding through an outlet port of mating size and with the luer fitting disposed outside the housing,  such that the housing defines a lock member engaged axially between  the  syringe barrel  and  luer fitting to secure the barrel against axial displacement. In  another  position,  a  retainer  key  is  adapted  for installation  into the  syringe  chamber at  a  position spaced  inboard  from the outlet  port  and  defines  an alternative lock member for axially securing the syringe with the luer fitting disposed inside the housing.   In either   position,   a   syringe   piston   plunger   is controllably advanced by the pump into the barrel to deliver medication from the nose end of the syringe for administration to a patient via the luer fitting and infusion tubing or the like connected thereto.
Patent CA-2040928-C (CA)
Inventor: MUROTA GEORGE
IPC: A62C35/68
Filed: 1991-04-22
Granted: 1995-02-28
Abstract: A fire protecting structure of a channel portion of a plastic piping in a fire partition wherein the plas-tic piping is inserted in a through hole formed in the fire partition and the through hole is filled with a refractory material, wherein a support means having a region, which makes a refractory material to come in contact with the outer surface of the plastic piping, and portions for supporting an intumescent material, the support means being arranged around the plastic piping and the refractory material being filled in the region of the support means to come in contact with the outer surface of the plastic piping.
Patent CA-2047004-C (CA)
Title: Method and apparatus for continuously dividing bread dough
Inventor: MORIKAWA MICHIO
IPC: A21C3/02
Filed: 1991-07-12
Granted: 1995-08-08
Abstract: A method and apparatus is disclosed for continuously dividing bread dough.  The apparatus consists of a dough hopper, vertical conveyors mounted on the side walls of the hopper, a dough outlet provided at the bottom of the hopper located under the vertical conveyors, a divider having cutting knives for dividing the dough, a weighing conveyor provided under the divider for weighing the dough discharged through the weighing conveyor, and a control means for controlling the timing in the discharging operation of the weighing conveyor according to the weight of the dough.  The weight of the divided dough is instantly and successively weighed, while the period to keep the outlet open is controlled so that a belt-like sheet of dough, with sections of a uniform weight, is continuously produced.
Patent CA-2049337-C (CA)
Title: Enhanced pressure measurement flow control system
Inventor: KAMEN DEAN L
IPC: G01F17/00
Filed: 1990-04-27
Granted: 2000-08-29
Abstract: The present invention provides a system for measuring in an isolated rigid container (2), partially filled with a fluid, the volume Vu of that portion of the container that is not occupied by the fluid.  Reservoir means for holding a fixed known volume of a measurement gas is placed in first valved communication with the container.  Pressure means (8) is in second valued communication with the reservoir. The method comprises opening first valve (D) and reading equalised pressure P1 in container and reservoir. Closing first valve (D) and opening second valve (J) to pressurise reservoir and reading pressure P2. Closing second valve (J) and reopening first valve (D) and measuring final equalised pressure P3. Evaluating Vu according to Boyle's law for ideal gasps.
Patent CA-2052019-C (CA)
Title: Variable-tooth saw blades
Inventor: BROCKLEHURST HIRAM
IPC: B23D61/02
Filed: 1991-09-23
Granted: 2003-09-16
Abstract: A variable-tooth circular saw blade with cutting teeth in a plurality of circumferential groups has the successive teeth in each group first reducing and then increasing in pitch. This gives the blade an improved combination of cut, reduction of noise and vibration, together with higher speed.
Patent CA-2055802-C (CA)
Title: Cooling structure for electronics devices
Inventor: ZENITANI HIDEKI
IPC: H01L23/40
Filed: 1991-11-19
Granted: 1996-11-05
Abstract: A cooling structure for LSI or the like mounted in a small size electronic apparatus, comprising a main printed circuit board (1) mounted thereon first electronic devices (3) with low heat generation; at least an auxiliary printed circuit board (2) mounted thereon â second electronic device (4) with high heat generation and connected with one edge of the main printed circuit board (1) through a flexible printed circuit tape (5); a holder (6) fixed on the main printed circuit board (1) for resiliently supporting the auxiliary printed circuit board (2) at a distance above the former when the latter is turned over and is above the main printed circuit board (1) by bending the flexible printed circuit tape (5) so that a heat conductive surface of the second electronic device (4) is exposed outside.  This printed circuit board assembly (A) is accommodated in a housing (B) made of a heat conductive material so that the heat conductive surface of the second electronic device (4) is brought into close and resilient contact with the inner wall (14) of the hosing (B).
Patent CA-2072364-C (CA)
Title: Method for synchronizing the transmissions in a simulcast transmission system
Inventor: GOLDBERG STEVEN J
IPC: H04W56/00
Filed: 1991-01-25
Granted: 1995-05-02
Abstract: A method is described for synchronizing message transmissions in a multi-re-gional simulcast transmitter system. A master controller (116) couples to regional controllers (106) for enabling regional message trans-missions. The master con-troller (116) also generates a first delay measurement sig-nal which is coupled to a first regional controller (106) which initiates the trans-mission and then measures the propagation delay within the first transmission region. The master controller (116) next generates a second de-lay measurement signal which is coupled to a second regional controller (106'), in an adjacent transmission region. The first regional controller (106) also measures the propagation delay within the second trans-mission region. An intra-regional differential propagation delay is computed from the measurements of the propagation delays measured from the first and second transmission regions. The transmission delays for each regional transmitter (104) are then ad-justed to equalize both inter-regional and intra-regional differential transmission delays.
Patent CA-2072906-C (CA)
Inventor: SIERON MICHAEL A
IPC: B01D29/25
Filed: 1992-07-02
Granted: 2003-09-16
Abstract: Screening apparatus for separately removing knots and heavy reject particles from paper making stock comprises a generally cylindrical vertical housing having the interior thereof separated by a cylindrical perforated screening member into an annular screening chamber and an accepts space on the outer and inner sides of the screening cylinder respectively. Separate outlets for light and heavy reject particles are located at the top and bottom of the screening chamber, the supply flow of feed stock enters the screening chamber at the bottom there of, and special provision is made to insure that maximum separation of the knots and other lighter reject particles from the heavy reject materials will be effected within the screening chamber with minimum contact with the screening cylinder itself.
Patent CA-2076794-C (CA)
Title: Bubbler liquid level sensing system
Inventor: STEWART GLEN ALLAN
IPC: G01F23/16
Filed: 1992-08-25
Granted: 1996-06-18
Abstract: A bubbler liquid level sensing apparatus comprises a liquid storage tank with a vapor region and a fluid region and first and second sensing tubes exposed to the vapor region and fluid region, respectively.  A pump with an inlet and an outlet is included, the inlet is pneumatically coupled to the first sensing tube and the outlet is pneumatically coupled to the second sensing tube.  First and second controllable valves each have a first input.  The first input of the first controllable valve is pneumatically coupled to the first sensing tube and the first input of the second controllable valve is pneumatically coupled to the second sensing tube.  The first and second controllable valves each also have a second input pneumatically coupled to the atmosphere, wherein each of the controllable valves has an output that is selectively pneumatically coupled to either the first input or second input of said valve.  A transducer is coupled to the outputs of the first and second controllable valves so that the transducer may be selectively coupled either to the atmosphere or the sensing tubes.
Patent CA-2076893-C (CA)
Title: Low noise fine frequency step synthesizer
Inventor: YANG STEVE S
IPC: H03L7/197
Filed: 1992-08-26
Granted: 1999-01-26
Abstract: A frequency synthesizer (10) and method the achieves low phase noise and provides synthesized frequency signals in fine frequency step intervals.  The synthesizer (10) comprises an L-band low phase noise frequency synthesizer with fine frequency step increments.  The synthesizer (10) employs half-interger digital frequency dividing (25), VCO frequency offsetting, local oscillator harmonic mixing (34) and two phase locked loop circuits (12, 13).  The synthesizer (10) comprises a reference oscillator (11) for providing a reference frequency signal, and two phase locked loops (12, 13). The first loop (12) is the fine loop and generates the frequency step size.  The second loop (13) reduces the phase noise, reduces the frequency step size and translates to the desired frequency.  The output from a first VCO (21) is divided by a predetermined fixed number (31) to reduce the frequency step size and to reduce the phase noise.  The second loop (13) has a second VCO (32) whose output, at L-band, for example, is divided by two (33), and then mixed (34) with the third harmonic of the reference frequency signal to generate an offset frequency signal that is locked to the low phase noise fine frequency step signal of the first loop (12).  The output frequency is adjusted by changing the digital programmable half-integer frequency divider (25).  The low phase noise and fine frequency step frequency synthesizer (10) provides a major improvement for Doppler radar and communication receivers.
Patent CA-2078039-C (CA)
Title: Process for the production of lactams
Inventor: GRIFFITHS GARETH
IPC: C07D209/12
Filed: 1992-09-11
Granted: 2002-07-30
Abstract: .beta.,.gamma.-unsaturated .delta.6-lactams, especially 2-azabicyclo[2.2.1]hept-5-en-3-one, are produced by a Diels-Alder reaction of 1,3-dienes with sulfonyl cyanides and subsequent hydrolysis. The sulfonyl cyanides are formed in situ from cyano chloride and the corresponding sulfinates.    By the renewed reaction of the sulfinate formed in the hydrolysis of the Diels-Alder adducts with cyanogen chloride, the sulfonyl cyanides are regenerated and a catalytic cyclic process results, 2-Azabicyclo[2.2.1]hept-5-en-3-one is a starting compound in the synthesis of antiviral nucleoside analogs.
Patent CA-2082801-C (CA)
Title: Method for the preparation of 3-amino-2-chloro-4-alkylpyridines
Inventor: GROZINGER KARL G
IPC: B01J23/44
Filed: 1992-05-29
Granted: 2003-07-08
Abstract: A process for the preparation of a 3-amino-2-chloro-4-alkylpyridine of the formula: (see formula I) wherein R is alkyl of from one to three carbon atoms, an intermediate in the preparation of certain 5,11-dihydro-6H-dipyrido[3,2-b:2',3'-e][1,4]diazepine compounds useful in the prevention and treatment of HIV infection.
Patent CA-2087444-C (CA)
Title: Polymer mixture for producing films
Inventor: TOMKA IVAN
IPC: C08J3/20
Filed: 1992-05-12
Granted: 2005-11-29
Abstract: In order to produce a polymer mixture essentially consisting of starch and a polyolefine, up to 70 wt % of thermoplastically processable starch is mixed with 10 to 40 wt % polyolefine and to 35 wt % ethylene acrylate maleic anhydride copolymer.      During this mixing process an esterification reaction takes place between the maleic anhydride groups in the copolymer with free hydroxyl groups in the starch according to the general reaction process (T).