baber/WOPTO huggingface dataset:
Patent CA-2034290-C (CA)
Title: Sealing part for hydraulic cylinder
Inventor: TERASHIMA KIYOMITSU
IPC: F16J15/3284
Filed: 1991-01-16
Granted: 1998-04-14
Abstract: A sealing part formed a peroxide vulcanizate of a rubber compound having as a polymer component an EPDM mixture of 50 to 90 parts by weight of an EPDM having a Mooney viscosity (ML1+4 100°C) of 35 to 55, and 50 to 10 parts by weight of a low-Mooney EPDM (a subpolymer) having a Mooney viscosity (ML1+4 100°C) of 5 to 25.  The sealing part of the present invention has a high resistance to low-temperature compression permanent strain and is excellent in the kneadability of a rubber compound for producing the sealing part.
Patent CA-2036248-C (CA)
Inventor: WAGNER ROBERT F
IPC: A47C27/06
Filed: 1991-02-13
Granted: 1994-09-13
Abstract: ABSTRACT OF THE DISCLOSURE The border of a mattress or other such coil spring assembly is stabilized and reinforced using a continuous length of resilient rope which is wedged between convolutions of adjacent springs a plurality of turns about the perimeter of the coil spring assembly.
Patent CA-2036761-C (CA)
Title: Apparatus and method for a smooth transition between calibrated airspeed control of an aircraft and mach number control of an aircraft
Inventor: KAHLER JEFFREY A
IPC: G05D1/06
Filed: 1991-02-20
Granted: 2000-04-18
Abstract: Apparatus and an associated method are described for an aircraft for providing an auto-changeover procedure from a calibrated airspeed control parameter to a Mach number control parameter when the aircraft is ascending and from a Mach number control parameter to a calibrated airspeed parameter when the aircraft is descending. The auto-changeover procedure is responsive to application of preselected calibrated airspeed and Mach number parameters. The data processing unit of the aircraft provides a continually updated prediction of the target parameter that would result should the aircraft execute the auto-changeover under the currently existing conditions. then the predicted value and the preselected value are equal, the changeover procedure is invoked, reducing the transients resulting from overshoot of the target parameter value. Provision is made for the circumstance when the changeover is determined by an altitude rather than a target parameter. Approximation equations for reducing the computational requirements are discussed.
Patent CA-2037349-C (CA)
Title: Branch migration of nucleotides
Inventor: WETMUR JAMES G
IPC: C07H21/04
Filed: 1991-02-28
Granted: 2008-06-17
Abstract: Procedures and compositions for forming and stabilizing non stable branch migrated oligo- and polydeoxynucleotides utilizing a displacer which is either single stranded or partially double stranded and hybridized to a linker strand. The displacer may contain one or more modified nucleotides.
Patent CA-2043324-C (CA)
Title: Fall restraint cable support and method
Inventor: LEBOW DWIGHT R
IPC: E04G21/32
Filed: 1991-05-27
Granted: 1994-08-23
Abstract: An improved intermediate support is provided for ensuring the safety of a worker while moving relative to a fixed structure at elevated locations, with the worker being secured by a lanyard to a safety or fall restraint cable. The intermediate support is secured to the fixed structure, and includes a supporting plate having a notch along the periphery thereof for receiving the safety cable, and a pair of opposing hook members positioned on opposite sides of the supporting plate. The hook members prevent the safety cable from inadvertently or intentionally moving out of the notch. The method of the present invention ensures that an end of the lanyard secured to the safety cable may be quickly and easily moved sequentially past one hook member, then the supporting plate, and then the other hook member to allow the worker to efficiently and safely move past the intermediate support.
Patent CA-2044796-C (CA)
Title: Process for producing pyrido[1,2-a] pyrimidine derivative
Inventor: SANO ATSUNORI
IPC: C07D471/04
Filed: 1991-06-17
Granted: 2001-10-16
Abstract: A pyrido[1,2-a]pyrimidine derivative which is useful as an antiallergic agent can be produced from a 2-aminopyridine derivative or a hydrazoic acid salt thereof by a one-pot and substantially one-step process.
Patent CA-2045825-C (CA)
Title: End-load carton
Inventor: MACLEAN CHRIS
IPC: B65D71/00
Filed: 1991-06-27
Granted: 1993-10-05
Abstract: A B S T R A C T      A beverage carton includes a top panel, a bottom panel, and a pair of side panels.  Vertical end flaps extend from each of the side  panels  part  way  across  each  end  and  meet  each  other.          Horizontal end flaps extend from the top and bottom panels part way down and up, respectively, each end, and meet each other.   The vertical end flaps extending from each side panel across the end are of unequal width and meet in a substantially vertical line off-set from mid-way between the side panels.
Patent CA-2047474-C (CA)
Title: Process for producing high surface area activated carbon
Inventor: GREINKE RONALD ALFRED
IPC: C01B31/12
Filed: 1991-07-19
Granted: 1996-09-03
Abstract: Process for producing activated carbon, preferably high surface area activated carbon, from inexpensive cellulosic precursors, such as paper, by pretreating the cellulosic precursor with an activating agent, such as phosphoric acid, followed by carbonization in an inert atmosphere at an elevated temperature to produce activated carbon. The activated carbon can be further activated to increase its surface area by heating it in an oxidizing atmosphere at an elevated temperature to yield activated carbon having a surface area of at least 1000 m2/g.
Patent CA-2048761-C (CA)
Title: Frequency division network having low phase noise
Inventor: ERICKSON BERT KENNETH
IPC: H03B19/00
Filed: 1991-08-08
Granted: 2000-10-24
Abstract: A frequency division network is disclosed in which a sinusoidal signal is converted to a digital format for frequency division and then converted back to the sinusoidal format, the sinusoidal output wavefrom having low phase noise. In a preferred embodiment the frequency conversion takes place in an m-fold plurality of edge triggered flip-flops, connected to divide by two, and clocked by the sinusoidal waveform. Each flip-flop is subject to fitter causing phase noise, which is minimized when the output of two sets of four flip-flops are averaged, and then filtered to obtain the sinusoidal fundamental. When a crystal filter having a very narrow pass band is employed, the phase noise is further reduced. The frequency division network uses low cost components and the phase noise of the output waveform approaches that of a stable crystal oscillator.
Patent CA-2057027-C (CA)
Inventor: VANEENAM DONALD N
IPC: C11D3/44
Filed: 1990-06-12
Granted: 1999-04-06
Abstract: Des compositions nettoyantes/dégraissantes aqueuses stables formulées sous la forme de véritables micro-émulsions et renfermant un adjuvant contiennent: (a) au moins un solvant organique difficilement soluble dans l'eau, caractérisé en ce qu'il: (i) présente une hydrosolubilité dans la plage d'approximativement 0,2 à approximativement 6 % en poids; (ii) n'est pas un hydrocarbure ou un halocarbure; (iii) possède un ou plusieurs groupes fonctionnels semblables ou dissemblables contenant de l'oxygène, de l'azote, du soufre ou du phosphore; (iv) est un solvant pour contaminants hydrophobes; et (v) est présent dans une quantité excédant sa solubilité aqueuse; (b) un adjuvant; (c) un additif de solubilisation constitué d'approximativement 0,1 à approximativement 100 % en poids d'un tensio-actif et de 0 à approximativement 99,9 % en poids d'un copulant, l'additif de solubilisation étant présent dans une quantité n'excédant pas sensiblement la quantité nécessaire pour faire passer le solvant organique et ledit adjuvant combinés de la forme d'une véritable macro-émulsion à la forme d'une micro-émulsion, et inférieure à celle nécessaire pour former une véritable solution; et (d) de l'eau. Ces compositions présentent une efficacité de nettoyage/dégraissage améliorée par rapport aux compositions ne renfermant pas d'adjuvant.
Patent CA-2062572-C (CA)
Inventor: HERRINGTON FOX JOHN
IPC: A44B19/36
Filed: 1992-03-10
Granted: 1999-12-14
Abstract: A fastener structure for a thermoplastic bag, comprising a pair of flexible plastic strips adapted to be secured to the facing sidewalls along the mouth of a thermoplastic bag; reclosable interlocking male and female profile elements on the respective strips; and a slider straddling the strips far opening or closing the male and female profile elements. The structure also includes end clamp means locate at the opposite ends of said strips, each of said end clamp means comprising a pair of clamp members positioned, in use, on opposite sides of the bag for clamping the pair of strip and the facing sidewalk of the bag therebetween. Means is provided for clamping each of said pair of clamp members together to provide a seal at the ends of said strips, said end clamp providing a stop surface adapted to engage with the slider for preventing the slider from moving past the ends of the strips. A method of manufacturing a plurality of thermoplastic bags incorporating a fastener structure is also disclose.
Patent CA-2071178-C (CA)
Title: Polymer-supported solution synthesis of oligosaccharides
Inventor: KREPINSKY JIRI J
IPC: C07H3/06
Filed: 1992-06-12
Granted: 2003-01-21
Abstract: This invention relates to the preparation of oligosaccharides, using polymer supported methodology. By this method, which offers anomeric control, oligosaccharides are produced very rapidly in comparison with known methodologies. Thus, there is disclosed a process for the preparation of oligosaccharides which comprises a) forming a synthon of a saccharide and a monomethylether of polyethylene glycol or a derivative thereof, the synthon having a linkage between the oligosaccharide and the monomethylether of polyethylene glycol or a derivative thereof, which linkage can be severed under conditions that do not damage glycosidic or other bonds in a desired end product;   b) subjecting the synthon to repeated additions of a suitable glycosylating agent to form a desired oligosaccharide-polyethylene glycol linked product;   c) isolating the linked product as a solid:   d) purifying this solids and e) releasing the oligosaccharide from the polyethylene glycol.
Patent CA-2082510-C (CA)
Title: Stone slab saw
Inventor: FISH DONALD D
IPC: B23D59/04
Filed: 1992-06-17
Granted: 2003-05-06
Abstract: A stone slab saw, a continuous flexible belt (29) is drivingly mounted to a plurality of sheaves (25, 26, 27, 28) rotatably mounted to a frame (24). A motor belt combination (80, 83) is operable to drive one of the sheaves (27) and move the belt (29). The frame (24) is vertically movable by a pair of racks (30, 31) and pinions (34, 35) driven by a motor (38). The belt (29) includes a plurality of abrasive pad holders (62, 63, 64) mounted thereto with each holder including an abrasive pad (61) having an out-wardly facing abrasive surface. A guide bar (39) mounted to the frame (24) is in tension guiding the belt (29) along a straight path and providing a rigid backing as the belt (29) is driven and lowered through the block of stone (20) cutting a slab therefrom.
Patent CA-2086470-C (CA)
Inventor: LALLEMAND ALAIN
IPC: A63B59/70
Filed: 1992-12-30
Granted: 1999-02-02
Abstract: The hockey stick comprises a shaft, a blade and a heel forming the connection between the blade and the shaft. It comprises a core having several parts (11, 12, 13), each part being made from synthetic foam having a different density to that of the other parts, based on different materials, in order to adapt the resistance and the characteristics of each part to the particular local stresses of the stick. The core is covered with three layers of woven materials (1, 2, 3).
Patent CA-2088224-C (CA)
Title: Cavitied abrading device with layered grit
Inventor: STANFIELD CHARLES K
IPC: B24D3/06
Filed: 1993-01-27
Granted: 2004-04-27
Abstract: An improved abrading device made with predetermined cavities.     In this device, metal grit is magnetically positioned and then brazed on a metal surface to form a generally uniform distribution of the metal grit on the land area and not on the cavities of the metal surface.
Patent CA-2098931-C (CA)
Inventor: AVIDAN AMOS ANDREW
IPC: C10G11/18
Filed: 1993-06-22
Granted: 2003-01-14
Abstract: Oxides of nitrogen (NO x) emissions from an FCC regenerator are reduced by forcing the regenerator to operate intermediate full and partial CO burn mode. Operating with less than 1 mole % O2, and up to 1 or 2 % in the flue gas, creates conditions which oxidize nitrogen compounds in coke on spent catalyst to NO x, and simultaneously convert NO x in the regenerator to nitrogen. A downstream CO boiler can burn this low CO flue gas without producing large amounts of NO x. Most NO x emissions can be eliminated. An apparatus, with the regenerator air:coke ratio controlled by both CO and O2 analyzers monitoring regenerator flue gas, is also disclosed.
Patent CA-2105842-C (CA)
Title: Neural network based control system
Inventor: HALL JAMES WILLIAM
IPC: A01D41/127
Filed: 1993-09-09
Granted: 1998-11-03
Abstract: A neural network is trained with a general set of data to function as a general model of a machine or process with local condition inputs set equal to zero.  The network is then retrained or receives additional training on an extentd data set containing the general set of data, characterized by zero values for the local condition inputs, and data on specific local conditions, characterized by non-zero values for the local condition inputs.  The result is a trained neural network which functions as a general model when the inputs for the local conditions inputs are set equal to zero, and which functions as a model of some specific local condition when the local condition inputs match the encoding of the some local data set contained within the training data.  The neural network has an architecture and a number of neurons such that its functioning as the local model is partially dependent upon its functioning as the general model.  This trained neural network is combined with sensors, actuators, a control and communications computer and with a user interface to function as combine control system.
Patent CA-2107611-C (CA)
Title: Screen printing method and apparatus
Inventor: MILLER MICHAEL J
IPC: B41J2/005
Filed: 1993-10-04
Granted: 2002-12-17
Abstract: A composite stencil screen assembly including a uniformly-prestressed resilient backing screen attached to a frame and a metallic wire mesh stencil screen attached to the backing screen. A predetermined portion of the backing screen is removed after the stencil screen is attached thereto in order to permit the pre-stressing force in the backing screen to uniformly pre-stress the stencil screen in all directions to impart a tight, wrinkle-free, high-quality printing surface to the stencil screen. In a preferred embodiment, the assembly is retensioned subsequent to removal of the predetermined portion of the backing screen. The composite construction is uncomplicated in design, resists metal fatigue of the wire mesh stencil screen, is effectively used in non-thermally dependent and thermally dependent printing operations, and has a long service life.
Patent CA-2110297-C (CA)
Inventor: DISANTO FRANK J
IPC: G02F1/16756
Filed: 1991-05-30
Granted: 1999-08-17
Abstract: There is disclosed methods for fabricating electrophoretic displays (10). Essentially the methods employ selective materials such as different metals (15, 18, 19, 20) which are capable of being etched by different etchants. In this manner, a laminate is provided to form a grid matrix which is insulated from a cathode matrix (41, 42, 43, 44) which grid matrix is also insulated from a second anode matrix (54, 55). The entire display utilizes a local or second anode and a remote anode (28) to further control pigment particle migration. The display (10) is fabricated by two methods both of which employ selective etching of the parallel line type of display electrodes which constitute a cathode, a grid and a local anode.
Patent CA-2132135-C (CA)
Inventor: BREDA SILVANO
IPC: E03C1/10
Filed: 1994-09-15
Granted: 2001-10-02
Abstract: A cartridge for a valve housing having outlets, the cartridge comprising a stationary body sleeve for fixed insertion within the housing and having outlet ports permanently aligned with the outlets of the housing, a moveable substantially hollow stem sleeve inserted within the stationary body sleeve and having an opening selectively alignable with the ports of the stationary body sleeve, the body sleeve and hollow stem being connected to one another by a retaining ring which aligns and maintains the cartridge as a unit in the housing.
Patent CA-2134344-C (CA)
Inventor: YUEN HENRY C
IPC: H04N5/782
Filed: 1993-04-30
Granted: 2004-07-27
Abstract: Encoded preprogramming information listed in a television calendar allows a timer preprogramming feature on a video cassette recorder (44) to be programmed using a compressed code, which are decoded by a decoder (38) built into a remote con-trol, video cassette recorder, television or other video device to convert the compressed code into channel, date, time and length information. The user would use the remote control (10) to enter the code that signifies the program to be recorded. The channel, date, time and length information is used to select channels, start recording, and stop recording at the appropriate time. A local channel map is stored so that the channel information from the compressed codes can be utilized to tune the correct channel even though channel numbers in different localities may be different. Entering local channel map data may be accomplished by a key-board (1202) connected to the remote control.
Patent CA-2135995-C (CA)
Inventor: DEN BOER WILLEM
IPC: H01L29/786
Filed: 1994-11-16
Granted: 2000-05-30
Abstract: A thin film transistor (TFT) array in an active matrix liquid crystal display (AMLCD) including a centrally located round source electrode substantially completely surrounded by a substantially annular or circular shaped drain electrode. The geometric design of the TFT of this invention provides for a thin film transistor having a reduced parasitic capacitance and decreased photosensitivity. The TFTs of this invention are located at the intersections of gate and drain lines of an active matrix LCD array thereby increasing the size of the pixel display openings of the matrix array.
Patent CA-2137142-C (CA)
Title: Method for increasing production of disulfide bonded recombinant proteins by saccharomyces cerevisiae
Inventor: TUITE MICHAEL F
IPC: C12N9/90
Filed: 1993-06-02
Granted: 2001-09-25
Abstract: Disclosed is a process for increasing the yield of disulfide bonded recombinant proteins produced by yeast, especially rec-ombinant secreted proteins. The enzyme protein disulfide isomerase (PDI) catalyzes the formation of disulfide bonds in secretory and cell-surface proteins, We disclose the construction of recombinant strains of the yeast Saccharomyces cerevisiae which over-produce either human PDI or yeast PDI in a regulated fashion. These strains show greatly increased secretion of disulfide bonded proteins of potential therapeutic significance. These strains have the potential to increase the production of various disul-fide bonded proteins.
Patent CA-2140134-C (CA)
Title: Screening apparatus for papermaking pulp
Inventor: LUTHI OSCAR
IPC: B07B1/20
Filed: 1993-07-02
Granted: 1999-04-27
Abstract: A hydrodynamic device for generating negative pressure excursions in a pulp slurry during fine screening, includes at least one half-foil member (123) disposed on a substantially cylindrical outer surface of a rotor (121). The rotor (121) is mounted within and co-axial with a substantially cylindrical screen (95) having a circumferentially continuous apertured zone to define an annular screening chamber (93) between the rotor (121) and the screen (95). The half-foil member (123) is collectively at least axially co-extensive with the apertured zone and has a leading edge which, also collectively, is inclined at a spiral angle (33) relative to the axis of the rotor (121) such that, in one embodiment, during rotation, the leading edge of the half-foil member (123) conducts large particles downwardly through the screening chamber (93). A selection of hydrodynamic foil configurations is provided in order to adapt to a wide range of pulp types and screening conditions.
Patent CA-2143349-C (CA)
Inventor: SWEARINGEN BRUCE D
IPC: E21B41/00
Filed: 1995-02-24
Granted: 2000-09-12
Abstract: A hydraulic control sub assembly is used for actuating hydraulically operated downhole remedial tools, such as section mills or underreamers. The control sub features a drop ball mechanism to terminate the flow of drilling fluid to the hydraulic tool, thereby inactivating the tool. The control sub also has a hydraulic rupture disc that permits drilling fluid circulation when tripping the drill pipe. The control sub further contains upwardly directed jet nozzles to enhance fluid flow in the well bore to help clear away debris. A float valve is also incorporated in the control sub to ensure there is no fluid under high pressure trapped in the hydraulic tool that may jam the tool.
Patent CA-2147179-C (CA)
Title: Multiple cable rock anchor system
Inventor: SCOTT JAMES J
IPC: E21D21/00
Filed: 1994-05-19
Granted: 1997-10-21
Abstract: A multiple cable rock anchor (19) comprising an assembly of a plurality of individual elongated cables (20) having an attachment (25) for joining a first end of each cable in association for common movement, or wrapped to loosely hold them together without restricting relative sliding movement in bending. The assembly of cables is manipulated by bending for installation in a bore hole (12) formed in a geologic structure (13) where there is a drift dimension less than the desired length dimension of the elongated cables (20), thereby forcing the cables (20) to be bent upon being inserted in the bore hole (12). The cables (20) may have different strengths, dimensions, and lengths.
Patent CA-2150675-C (CA)
Title: Process for treating waste water
Inventor: SAVOLAINEN MARTTI
IPC: C02F1/52
Filed: 1993-12-03
Granted: 2005-05-10
Abstract: The invention relates to a process for the treatment of waste waters of the forest industry. According to the invention, waste water pre-treated biologically, whereafter the further treatment is carried out by using Fe()I) salt and hydrogen peroxide.
Patent CA-2151904-C (CA)
Title: Ring guard for food slicing machine blade
Inventor: NORMAN CLYDE WILSON
IPC: B26D7/22
Filed: 1995-06-15
Granted: 2003-05-13
Abstract: A food product slicing machine comprising:  a housing; a circular slicing blade having a peripheral cutting edge, the blade being rotatably mounted on the housing; a bracket extending from the housing; a plurality of fasteners mounted on the bracket; a ring guard surrounding the peripheral cutting edge of the blade, the ring guard having at least one aperture through which at least one of the fasteners extends; and a generally circular cover plate removably mounted on the fasteners; wherein, the ring guard is maintained in a first position when the cover plate is mounted on the ring guard, and the ring guard is axially displaceable to a second position when the cover plate removed, the ring guard surrounding the peripheral cutting edge of the cutting blade in both the first and second positions.
Patent CA-2152410-C (CA)
Title: Mediators suitable for the electrochemical regeneration of nadh, nadph or analogs thereof
Inventor: COREY PAUL F
IPC: C12Q1/00
Filed: 1995-06-22
Granted: 2004-02-17
Abstract: Disclosed is an electrode suitable for the electro-chemical regeneration of the co-enzymes NADH and NADPH.      The electrode has imparted on its surface a mediator func-tion which is a 3-methylene-3H-phenothiazine or a 3-meth-ylene-3H-phenoxazine compound.