baber/WOPTO huggingface dataset:
Patent CA-2197131-C (CA)
Inventor: SAYEED ZULFIQUAR
IPC: H04L1/18
Filed: 1997-02-10
Granted: 2000-05-30
Abstract: A method and apparatus for performing adaptive hybrid automatic repeat request (ARQ) coding in which the coding is modified based on the acknowledgements returned by the receiver. In accordance with one illustrative embodiment of the present invention, the state of the channel is implicitly determined by the transmitter based upon the frequency of acknowledgments (ACKs and NACKs) arriving from the receiver. For example, since a NACK implies a weak received signal strength, the code rate of the FEC is advantageously reduced in response to such an acknowledgement. On the other hand, the code rate of the FEC is advantageously increased in response to an ACK. In accordance with another illustrative embodiment of the present invention, the acknowledgement returned by the receiver is modified to convey the number of errors in the corresponding received data packet. In particular, a Reed-Solomon (RS) outer code is employed in the FEC to enable the receiver to determine the number of errors in the received data packet. If the acknowledgement indicates a large number of errors at the receiver, the code rate of the FEC is advantageously reduced in response thereto.
Patent CA-2197829-C (CA)
Inventor: KITABAYASHI HIROYUKI
IPC: H03H9/145
Filed: 1997-02-18
Granted: 2000-05-16
Abstract: A surface acoustic wave device comprises a diamond layer (12) or a substrate (11) with a diamond layer (12) formed thereon, an A1 electrode (13) formed on the diamond layer (12), and a ZnO piezoelectric thin film layer (14) formed on the diamond layer (12) with the A1 electrode (13) covered by the ZnO piezoelectric thin film layer (14). The ZnO piezoelectric thin film layer (14) has a thickness hl within a range defined by 0.65 ~ khl ~ 0.75 while the A1 electrode (13) has a thickness h2 within a range defined by 0.03 ~ kh2 ~ 0.04, where k is given by k = 2.pi. /.lambda.and .lambda. represents an electrode period.
Patent CA-2198132-C (CA)
Inventor: COX J ALLEN
IPC: C03C15/00
Filed: 1995-11-30
Granted: 2007-04-24
Abstract: A method of multiple replication of a diffractive optical glass surface reli ef profiles into other glass-type substrates. For example, a malleable but hardenable layer formed on a glass substrate is embossed with a stamper having a reverse image of the optical glass surface relief profile, to result in a high quality copy of the original diffractive glass surface relief profile. The embossed layer is hardened and separated from the scamper. The hardened layer having the embossed surface relief profile is, for instance, etched down such that the surface relief profile is etched in to the surface of the glass substrate. T he result of this method is a readily producible and very durable glass or like-material accurate replica, having high fidelity and being capable of providing high quality images, of another diffractive optical element.
Patent CA-2199237-C (CA)
Inventor: FUJII TAKAFUMI
IPC: A47J41/00
Filed: 1997-03-05
Granted: 2001-08-07
Abstract: A double-walled synthetic resin container wherein a gap between an inner container and an outer container holds a synthetic resin thermal insulator layer having a double-walled structure and filled with a low thermal conductivity gas having a thermal conductivity lower than that of air.  Additionally, a double-walled synthetic resin lid wherein a gap between a top surface wall and a bottom surface wall holds a synthetic resin lid thermal insulator layer having a double-walled structure and filled with a low thermal conductivity gas having a thermal conductivity lower than that of air.  A plating film does not need to be formed, thus reducing the manufacturing costs, increasing the freedom of design, and simplifying recovery of the synthetic resin.
Patent CA-2209377-C (CA)
Inventor: RAVENSCROFT ADRIAN C
IPC: A61F2/06
Filed: 1996-01-29
Granted: 2007-03-20
Abstract: An intraluminal prosthesis for intraluminal repair of body conduits, especially aortic aneurysms, is disclosed. The prosthesis includes a generally tubular, flexible graft (20) having a proximal open end (30) and at least one distal open end (31) terminating in a hem (33). A stent (21) can be disposed within the proximal open end (30) and is adapted to be attached to the body conduit (1). The hem (33) is inverted within the graft so that it is disposed as a cuff (34) within the graft. The hem (33) is arranged so that upon withdrawing the distal open end (31) from inside the cuff (34), the cuff will unfold and follow the distal open end to expose it to receive another stent for attachment to the body conduit (12) for intraluminal implantation of the graft.  Preferably the hem is folded a second time within the cuff to form a second cuff (35) within the graft. The stents are preferably formed of a plexus of wires adapted to expand from a first narrow diameter to a second diameter to engage the body conduit. Also disclosed is a method of intraluminal implantation of the graft.
Patent CA-2216303-C (CA)
Inventor: ESSER RICHARD J
IPC: C08L101/00
Filed: 1993-02-09
Granted: 2001-07-24
Abstract: A novel storage stable crosslinkable aqueous polymeric formulation comprising an aqueous carrier; at least two polymeric ingredients, one of which has acid-functional pendant moieties and the other of which has entamine-forming pendant moieties; a non-polymeric polyfunctional amine having at least two amine-functional moieties; and base. The amount of base contained within the formulation is effective for inhibiting gellation.
Patent CA-2220020-C (CA)
Title: Composition et son utilisation pour convertir un gaz contenant de l'hydrogene sulfure et de l'anhydride sulfureux en soufre
Inventor: DEZAEL CLAUDE
IPC: C01B17/05
Filed: 1997-11-24
Granted: 2006-10-17
Abstract: On décrit une composition désulfurante comprenant - un solvant A organique de température d'ébullition à pression atmosphériqu e, supérieure à 200 .degree.C, - un mélange B d'au moins un sel (S) alcalin ou alcalino-terreux d'un monoacide organique ou d'un polyacide organique dont au moins une valeur de la constan te de dissociation (pK) est comprise entre 2,2 et 8 ; d'au moins un agent complexa nt (C) ; et d'eau (W), dans les conditions pondérales suivantes: S = 0,1 à 30 % C = 0,001 à 30 % W = q.s.p. 100 Application au traitement d'effluents d'unités Claus.
Patent CA-2223312-C (CA)
Inventor: MORRISON MAX E
IPC: B60R21/00
Filed: 1997-12-02
Granted: 2006-05-09
Abstract: The invention provides a flotation device for a snowmobile including a plurality of preferably self-contained air bag modules having inflatable bladders affixed to the exterior of a snowmobile and adapted to inflate when a water detection device such as a float sensor is exposed to water. The inflated bladders supply sufficient buoyancy to maintain the snowmobile afloat and stable, and in the preferred embodiment are configured to provide an escape means for the occupants of the snowmobile who can use the bladder as a buoyant platform to escape to solid ice.
Patent CA-2231058-C (CA)
Inventor: PRINGLE DAVID L
IPC: B25D1/12
Filed: 1998-04-07
Granted: 2001-11-27
Abstract: A shock-absorbing claw hammer includes a handle, a claw and a striking head. Vibrations in the handle caused by the striking head striking an object are at least partially reduced by shock-absorbing means.
Patent CA-2231878-C (CA)
Inventor: DORTON DAVID W
IPC: F16B5/02
Filed: 1996-06-19
Granted: 2003-09-30
Abstract: A single-piece elastomeric mount (22) installed over a plurality of openings (15) has a like plurality of reinforcing plates (44 and 46) to permit the elastomeric rib between the plates' edges to flex. The apertures (24 and 26) in the mount can then be aligned with holes (15) in a support (13) having wider tolerances on their end positions. The mount may include two sets of plates - an upper load-distribution set (44 and 46) and a lower wear-reducing set (30 and 32), each set being bonded to the elastomer.
Patent CA-2232780-C (CA)
Title: Polymeric peel-off coating compositions and methods of use thereof
Inventor: SWIDLER RONALD
IPC: C09D131/04
Filed: 1996-10-24
Granted: 2008-01-08
Abstract: Methods are provided for protecting exterior surfaces of automobiles and other products, or components of products, against abrasion, abrasive dust, water, acid rain, etc. The methods involve applying to a surface a protective coating composition comprising an emulsion selected from the group consisting of a vinyl-acrylic copolymer emulsion and a vinyl acetate-ethylene emulsion. The emulsion is dried to form a water-resistant protective coating that can be removed from the underlying surface by peeling when no longer desired.
Patent CA-2232872-C (CA)
Title: Continuous chewing gum manufacturing process for gum with controlled flavor release
Inventor: TOWNSEND DONALD J
IPC: A23G4/08
Filed: 1995-09-13
Granted: 1999-11-30
Abstract: A method of producing chewing gum with a controlled flavor release comprises the steps of continuously adding chewing gum ingredients to a continuous mixer, the chewing gum ingredients comprising one or more flavoring agents, the continuous mixer comprising a plurality of spatially separated feed inlets through which the chewing gum ingredients are added to the mixer, and the one or more flavoring agents being added to the mixer at controlled feed inlets; subjecting the chewing gum ingredients to a continuous mixing operation within the mixer, thereby forming a chewing gum composition; and continuously discharging the chewing gum composition from the mixer while chewing gum ingredients continue to be introduced and mixed within the mixer. The location or locations at which the flavor components are added controls the flavor characteristics of the chewing gum composition.
Patent CA-2233303-C (CA)
Inventor: KIRKBY ROBERT HOWARD
IPC: H04L27/00
Filed: 1996-10-07
Granted: 2002-02-05
Abstract: Multiple carriers are generated, modulated by data to be transmitted, as shown by oscillators (2-5) and modulators (21, 22, 31, 32, etc.) (or using Fourier transform techniques). They follow two paths. One path via adder (81) takes a set of carriers at integer multiples of a windowing frequency (f), where the odd carriers have some reference phase and the even carriers are in phase quadrature. The other path via adder (82) takes a second set of carriers, again at integer multiples of the windowing frequency; here the even carriers have the reference phase and the odd carriers are in phase quadrature. In the first path the signal is multiplied at (91) by a windowing function with a period equal to the reciprocal of the windowing frequency, whilst in the second path the signal is multiplied at (92) by a similar function which is time-shifted (by a delay 211) by half of the said period.
Patent CA-2237189-C (CA)
Title: 3-azetidinylalkylpiperidines or -pyrrolidines as tachykinin antagonists
Inventor: MACKENZIE ALEXANDER RODERICK
IPC: C07D403/06
Filed: 1996-12-09
Granted: 2002-09-03
Abstract: The present invention provides compounds of formula (I) and the pharmaceutically acceptable salts thereof. Such compounds and salts are tachykinin antogonists.
Patent CA-2239599-C (CA)
Title: Compositions and methods for hydraulic fracturing
Inventor: MACK DAVID J
IPC: C09K8/62
Filed: 1998-06-03
Granted: 2007-11-06
Abstract: A subterranean formation is treated by introducing a fracturing treatment composition comprising a polymer treatment fluid containing a dispersion of hydrophilic water swellable particles into the formation. The water swellable particles comprise synthetic polymers that are crosslinked so that they are water insoluble, but capable of swelling in the presence of relatively small amounts of water. When used with treatment fluids containing at least a small amount of water, the particles swell and reduce fluid loss to the formation during the treatment. When used during a hydraulic fracturing treatment of a hydrocarbon bearing formation, the particles may also reduce or eliminate water production following the fracturing treatment by restricting the extension of a fracture into water-bearing formations, and/or by restricting the flow of fluids from water-bearing areas.
Patent CA-2240426-C (CA)
Inventor: CADLE TERRY M
IPC: B22F5/08
Filed: 1996-12-05
Granted: 2005-05-10
Abstract: A unitary powder metal gear or sprocket (10) has a teeth region (16) which extends 2-5 mm below the tooth root diameter and a body region (14) radially inside of the teeth region (16). The teeth region (16) is pressed to a higher density than the body region (14) in a two chamber compaction die. The teeth region (16) is made of a sinter or induction hardening material, and the body region (14) is made of a liquid phase sintered material. Materials for the teeth (16) and body (14) regions are selected for compatibility by compacting them into a bimetallic strip (20, 22) with the teeth material (18) on one side and the body material (19) on the other side, sintering the strip (20,22) and observing the amount it bends.
Patent CA-2241297-C (CA)
Title: Apparatus for the filtering and separation of flow media with at least one permeate outlet
Inventor: HEINE WILHELM
IPC: B01D65/00
Filed: 1998-06-22
Granted: 2002-08-20
Abstract: An apparatus (10) for the filtering and separation of flow media enriched with foreign matter (raw media) (11), particularly of liquid media, according to the ultra-filtration principle by means of a membrane separation structure (12) is proposed, wherein the flow medium (11) is admitted to the membrane separation structure (12) and is separated into a retentate (13) enriched with foreign matter and a permeate (14) depleted of foreign matter and wherein at least the permeate (14) leaves the apparatus (10) by way of at least one outlet (15). The membrane separation structure (12) is formed by at least one membrane module (19) mounted between two support elements (17, 18), which are disposed in the flow medium spaced from one another in the flow direction of the flow medium (11) through the apparatus.
Patent CA-2241837-C (CA)
Title: Modular core, self-powered powerline sensor
Inventor: BASTARACHE GARY R
IPC: G01R15/18
Filed: 1997-10-30
Granted: 2002-11-26
Abstract: A modular core, self-powered powerline sensor (10) includes a plurality of modular core elements (18, 20, 22) for disposing about an a.c. powerline (12);  a winding layer to be energized by the a.c. powerline, including a plurality of interconnected windings (24, 26, 28) disposed about each modular core element (18, 20, 22), one or more sensors (36) for sensing a condition in or about the a.c. powerline (12); and a controller (106), powered by the windings (24, 26, 28) and responsive to the sensors (36), for receiving a signal indicative of the condition sensed.
Patent CA-2241844-C (CA)
Title: Ecarteur a mailles pour echangeur thermique
Inventor: KUBISA PETER Z
IPC: F28F21/06
Filed: 1997-01-10
Granted: 2001-08-14
Abstract: Un dispositif d'échange thermique avec le sang (10) comporte généralement une pluralité de petits conduits creux (32) en matière polymère destinés au transport du sang. Ces conduits creux (32) sont fabriqués à partir d'une forme plate enroulée en couches autour d'un axe (16). Les couches des conduits creux (32) sont espacées les unes des autres par un écarteur à mailles (40). Cet écarteur à mailles (40) a des trous (44) à travers lesquels un fluide caloporteur tel que l'eau peut circuler de façon plus efficace au-dessus et autour de la surface externe desdits conduits creux (32). Ledit fluide caloporteur effectue un échange thermique avec les surfaces externes des conduits creux (32) qui à leur tour effectuent un échange thermique avec le sang traversant lesdits conduits creux (32). Cette invention concerne également un échangeur thermique (10) qui s'avère plus efficace que les échangeurs thermiques connus de l'état antérieur de la technique du fait que l'écoulement du fluide caloporteur au-dessus et autour de la surface externe des conduits creux (32) est plus efficace.
Patent CA-2246077-C (CA)
Title: Drain cleaning apparatus
Inventor: RUTKOWSKI MICHAEL J
IPC: E03F9/00
Filed: 1998-09-30
Granted: 2002-06-18
Abstract: The inner end of a snake or drain cleaning cable coiled in a rotatable cable storage drum of drain cleaning apparatus is provided with a torque arm which frictionally engages the outer wall of the drum to restrain sliding of the cable relative thereto during a drain cleaning operation. The drain cleaning apparatus is motor driven, and a cable feed device for axially displacing the cable relative to the storage drum is provided on the outer end of a flexible guide tube detachably mounted on the apparatus to facilitate an operator guiding the outer end of the table into a drain to be cleaned and advancing or retracting the cable relative to the apparatus without having to physically contact the cable.
Patent CA-2246171-C (CA)
Title: Point-of-sale system including isolation layer between client and server software
Inventor: GOODWIN JOHN C III
IPC: G06Q20/20
Filed: 1998-08-31
Granted: 2000-09-26
Abstract: A system and method of transferring information between a first software application and a second software application which employ an isolation layer.  The system includes a client computer system provided by a first seller of computer systems, including a client software application, and a server computer system provided by a second seller of computer systems different from the first seller of computer systems, including a server software application which provides information from the server computer system to the client computer system.  The system additionally includes isolation layer software, either at the client computer system or at the server computer system, which facilitates communication between the client software application and the server software application to transfer the information.
Patent CA-2246842-C (CA)
Title: Reagent for evaluating a hepatic operation
Inventor: ITO ASUKA
IPC: A61K51/12
Filed: 1998-09-08
Granted: 2007-01-09
Abstract: The present invention relates to a reagent for evaluating a hepatic operation, comprising an aromatic amino acid, methionine, alanine, fructose or galactose labelled with " C at least at one position. According to the present invention, there is provided a reagent for evaluating a hepatic operation, which imposes less physical burden on a subject, can give accurate test results immediately and can be used safely without side effects. The reagent of the invention is useful for measuring the accurate liver excision ratio, liver regeneration/increase ratio or liver weight of a subject after a hepatic operation. With the reagent of the invention, information which is useful for evaluating a hepatic operation and the degree of invasion by the operation and for diagnosis is provided.
Patent CA-2254472-C (CA)
Inventor: BLANCHE STEPHEN ARTHUR
IPC: H01R24/30
Filed: 1998-11-24
Granted: 2003-09-09
Abstract: Range plug blades with integral conductor-accepting cups bisected by planes parallel with the blades are inserted into plug die slots, following which conductors are crimped into the cups, after which plastic is introduced into the die and hardened into a range plug holding the blades, cups, and conductors in predetermined positions.
Patent CA-2256330-C (CA)
Title: Repeater with variable bandwidth
Inventor: LATT MIKAEL
IPC: H04B7/15
Filed: 1997-05-28
Granted: 2004-01-27
Abstract: A mobile telephone repeater with a variable bandwidth is disclosed. The repeater comprises an uplink and downlink, each being provided with amplifier chains (6). Each chain comprises at least two band pass filter units (10, 11) coupled in series and having controllable pass bands, which at least partially overlap each other. The centre frequency of the filter units are controllable so as to make the bandwidth of the resulting pass band variable. Consequently, the effective bandwidth of the amplifier chain is controllable.
Patent CA-2260712-C (CA)
Title: Apparatus for the calibration of hollow chamber sheet extruded lines
Inventor: MEIER-KAISER MICHAEL
IPC: B29C48/90
Filed: 1999-02-04
Granted: 2007-05-15
Abstract: An apparatus for calibrating hollow chamber sheet extruded lines out of thermoplastic resin. The apparatus includes a vacuum housing and a planar intake area at a first end of said vacuum housing. The planar intake area is configured to receive the extruded line. Support rollers within said vacuum housing are configured to support said extruded line. Said extruded line exits said vacuum housing through a planar outlet area located at a second end of said vacuum housing opposite said first end.
Patent CA-2262272-C (CA)
Title: Earphone-microphone adapter
Inventor: YANG BILL
IPC: H04W92/08
Filed: 1999-02-19
Granted: 2002-07-09
Abstract: An adapter for connecting an earphone-microphone set to a mobile telephone such that a muting function is added to the system. Moreover, an older earphone-microphone set can also be connected to a mobile telephone via this adapter.
Patent CA-2269736-C (CA)
Inventor: OWENS ROBERT L
IPC: B26B5/00
Filed: 1999-04-22
Granted: 2005-06-14
Abstract: A knife handle such as in a utility knife or box cutter knife with a blade carrier having a planar blade support, parallel flanges and laterally projecting tabs for securing the blade in position on the carrier. The knife handle provides improved retention of a knife blade under torsional loads applied to the blade through the use of two or more longitudinally spaced retention tabs that capture both forward and rearward portions of the blade.
Patent CA-2271229-C (CA)
Inventor: CHAMBERS DAVID CLAIRE
IPC: E04B1/94
Filed: 1999-05-07
Granted: 2007-09-25
Abstract: The invention provides a device for use as a fire stop, which comprises a material that intumesces on exposure to heat, a patch of an adhesive connected to a surface of the material and a liner that covers the adhesive and is readily detachable from the adhesive by means of a pull, to expose the adhesive.
Patent CA-2278446-C (CA)
Title: Steerable underwater plow
Inventor: MACHIN JONATHAN B
IPC: F16L1/12
Filed: 1998-11-03
Granted: 2007-09-18
Abstract: A steerable plow (20, 20a-20d) configured for underwater towing along a sea bed. The plow includes a plow body (24) and a soil cutting member (26) attached to the body. The soil cutting member is configured for forming a trench in the sea bed in a forward direction of travel of the plow. A tow member (36) is attached to the body for attaching the plow to a tow cable. The tow member defines an effective tow point which is forward of the cutting member. A steering device (30, 44, 48) is provided for creating a steering moment capable of varying the direction of travel. The steering device is positioned rearwardly relative to said tow member.
Patent CA-2290101-C (CA)
Title: Tourmaline in cosmetic cleansing compositions
Inventor: GUBERNICK JOSEPH
IPC: A61Q5/02
Filed: 1999-03-12
Granted: 2007-10-23
Abstract: The present invention relates to cosmetic skin or hair cleansing composition s comprising tourmaline.
Patent CA-2290154-C (CA)
Title: Induction heating for thermal rollers
Inventor: RINDFLEISCH HANS-JOCHEN
IPC: H05B6/14
Filed: 1999-11-16
Granted: 2003-10-07
Abstract: An induction heating for thermal rollers with a swivel-mounted hollow cylinder roller jacket equipped at its extremities with axis flanges, with an inductor arrayed within one of there enclosed spaces and coupled inductively with the roller jacket, consisting of an inductor spool, carrying a single or multiple phase current, and a magnetic core, characterized in that the roller jacket itself forms the magnetic core and the inductor spool consists of one or more rod- or shell-shaped current conductors, distributed peripherally in an array parallel to the axis in the vicinity of the internal surface of the roller jacket, stretching axially at least across the greatest bale width of the roller and adjustable in their inductive coupling to the roller jacket in sections or zones.