baber/WOPTO huggingface dataset:
Patent CA-2156943-C (CA)
Inventor: MURAOKA SHINYA
IPC: H04B3/23
Filed: 1995-08-25
Granted: 2001-02-13
Abstract: An echo canceller (30) cancels an echo signal produced on a transmission path (14) on the basis of a received signal received through a reception path (15).          The echo canceller comprises an adaptive filter (31) for producing a pseudo-echo signal from the received signal in accordance with tap gains. A producing section (19, 20) produces an error signal representative of an error level between the echo signal and the pseudo-echo signal.          A supplying section (21, 32) supplies the adaptive filter with selected ones of the tap gains memorized in a memory section (18) when the error level is less than a predetermined threshold level. The adaptive filter renews the selected ones of the tap gains into renewal tap gains in accordance with the received signal and the error signal to store the renewal tap gains as the selected ones of the tap gains in the memory section.
Patent CA-2162812-C (CA)
Title: Dentifrice compositions containing reactive ingredients stabilized with alkali metal compounds
Inventor: SANTALUCIA JOHN
IPC: A61Q11/00
Filed: 1995-11-14
Granted: 2008-03-25
Abstract: A dentifrice composition containing reactive ingredients such as peroxide and bicarbonate compounds which are stabilized to decomposition during storage by incorporating in dentifrice composition about 1.0 to about 5.0% by weight of an alkali metal compound.
Patent CA-2164092-C (CA)
Inventor: DELAVAL RODOLPHE
IPC: C03C3/16
Filed: 1995-04-05
Granted: 2004-07-13
Abstract: The material is impregnated with an aqueous solution containing the precurso rs of a phosphate glass base modified by at least the presence of zinc oxide, dried and heat treated to form an internal anti-oxid ative coating comprising the modified phosphate glass ba se. The precursors are fed into the aqueous solution so as to form a glass base wher ein the molar ratio of the glass modifying oxides, inclu ding zinc oxide and glass-forming oxides, consisting of mainly or only phosphoric anhydride, is sufficiently high, particularly 0.6 or ov er, preferably 0.9, to make the phosphate glass base resistant to moisture corro sion. The solution is obtained by initially dissolving i n water a polyphosphate such as sodium metaphosphate or trimetaphosphate capable of su bsequently stably solubilising, by complexing, and witho ut precipitate formation, the required amount of precursor salts of the modifyi ng oxides, comprising at least one zinc salt such as zin c nitrate or sulphate.
Patent CA-2167873-C (CA)
Inventor: FUKUOKA YUKO
IPC: H01M8/10
Filed: 1996-01-23
Granted: 1999-07-13
Abstract: The invention provides a method for manufacturing a solid polymer electrolyte electrolyte fuel cell which exhibits higher performances by sufficiently and uniformly contacting the solid polymer electrolyte with a catalyst to increase the reaction area inside the electrode. The method comprises the steps of dispersing a carbon powder supporting a noble metal catalyst in an organic solvent to obtain a dispersion, mixing the resulting dispersion with an alcoholic solution of a solid polymer electrolyte to produce a colloid of the solid polymer electrolyte and simultaneously to obtain a mixed solution in which said colloid is adsorbed to the carbon powder, applying the mixed solution on one side of a gas-diffusion layer to produce an electrode, and pressing the resulting electrode on at least one side of a solid polymer electrolyte membrane to integrate them. Furthermore, a fluorocarbon polymer can be added, to thereby form a gas channel without excessive covering of the catalyst and increase gas permeability of the electrode. Thus, a solid polymer electrolyte fuel cell which exhibits high performances in a high current density area can be further provided.
Patent CA-2172770-C (CA)
Inventor: SCHMOLL WOLFGANG
IPC: D04B35/04
Filed: 1996-03-27
Granted: 1999-04-13
Abstract: A knitting needle includes a shank, a needle hook carried by the shank at one end thereof, and a sawslot provided in the shank.  The sawslot is bordered by elastically deformable shank cheeks which are provided by upper supporting surfaces.  The sawslot has a throughgoing aperture which is open toward the shank back.  A latch rivet traverses the sawslot and is supported in the shank cheeks.          A needle latch having a latch back provided with engagement faces is pivotally supported by the latch rivet for swinging motions between a closed position in which the needle latch engages the needle hook and an open position in which the engagement faces on the latch back lie on the supporting surfaces of the shank cheeks.  The sawslot has, in a series as viewed from needle hook, a first sawslot portion containing the throughgoing aperture and a second sawslot portion having a width greater than the width of the first sawslot portion. The supporting surfaces are located in a zone of the second sawslot portion which has a depth greater than one half of the shank height and which is closed underneath the supporting surfaces.  A third sawslot portion adjoins the second sawslot portion and has a width less than the width of the second sawslot portion.
Patent CA-2175242-C (CA)
Title: Wideband fft channelizer
Inventor: CARNEY RONALD R
IPC: H04B1/38
Filed: 1994-10-18
Granted: 1999-02-02
Abstract: A physically compact, multichannel wireless communication transceiver employs overlap and add or polyphase signal processing functionality, previously applied to narrowband speech analysis research, for wideband signal processing. A receiver section receives a plurality of multiple frequency communication channels and outputs digital signals representative of the contents of the plurality of multiple frequency communication channels. The receiver section contains an FFT-based channelizer that processes the digital signals output by a wideband digital receiver and couples respective channel outputs to a first plurality of digital signal processor units, which process (e.g. demodulate)respective ones of the digital channel signals and supply processed ones of the digital channel signals at respective output ports for distribution to an attendant voice/data network. On the transmit side, a transmit section contains a plurality of digital signal processors, respectively associated with respective ones of a plurality of incoming (voice/data) communication signals to be transmitted over respectively different frequency channels. Their processed (modulated, encoded) outputs are supplied to an inverse FFT combiner. The FFT combiner supplies a combined multichannel signal to a wideband transmitter which transmits a multiple frequency communication channel signal. Each of the channelizer and combiner may be implemented using overlap and add or polyphase filtering.
Patent CA-2176647-C (CA)
Inventor: GANEK ALAN GEORGE
IPC: H04N7/173
Filed: 1996-05-15
Granted: 2001-09-11
Abstract: A system and method for Video-on-Demand (VOD) satisfying the desire of 'surfers'. The process entails a server operating in a standard NVOD mode, whereby it continuously sends multiple copies of each program on separate channels. Eachcopy is delayed by a staggered time interval. The invention provides a way to fulfill a VOD user request asynchronous with the start of a NVOD transmission but which still makes primary use of the NVOD transmission for that requestor. The system and method combines independent server service satisfying an asynchronous request for only a short duration, usually less than or equal to the NVOD staggered time interval, and then aligns that requestor with an immediately previously commenced NVOD transmission.
Patent CA-2181564-C (CA)
Title: Skate guard
Inventor: WHITE HARRY HAROLD II
IPC: A63C3/12
Filed: 1996-07-18
Granted: 2003-10-07
Abstract: A skate guard is disclosed which comprises a blade protector or guide bar (11) and a support block (12) slidable along the guide bar (11). The support block (12) slides in a longitudinal channel provided in the guide bar (11). The guide bar (11) is provided, at the toe end thereof, with a downwardly and rearwards facing clamping surface (28) adapted to engage the upwardly and forwards facing edge (29) of a blade, while the block (12) includes a downwardly and forwards facing clamping surface (36) which wedgingly urges the heel portion of the blade in the direction toward the guide bar. The force of a spring (38) urging the block (12) towards the toe portion of the guide bar maintains a firm engagement between generally flat and upwardly facing support portions (18) and (21) with the underside (19, 22) of the toe and heel plates, 20, 23, of the skate respectively. The guide bar (11) and the block (12) are so dimensioned that with the undersides (19, 22) resting firmly on the support portions (18, 21), the runner edge (15) of the blade of the skate is devoid of any contact with the guide bar whereby even a slightest dulling of the runner edge (15) is prevented. At the same time, the skate guard can be conveniently and quickly attached to or detached from a blade.
Patent CA-2182475-C (CA)
Title: Procede pour fixer une barre de retenue sur un blanchet d'impression
Inventor: BREVENTANI WALTER
IPC: B41F30/00
Filed: 1995-01-31
Granted: 2005-03-29
Abstract: Cette invention se rapporte à un procédé qui permet de fixer une barre de montage (4) à un blanchet d'impression (6) et qui consiste à appliquer une certaine longueur d'une bande adhésive thermofusible (7) le long d'un bord du blanchet (6) et à proximité adjacente de ce bord, à disposer la barre de montage (4) le long de ce bord (5) du blanchet (6) et à la placer sur la bande (7), afin de former un ensemble, puis à appliquer chaleur et pression sur l'ensemble pendant une période suffisante pour faire fondre l'adhésif (7) et fixer de façon sûre la barre de montage (4) au blanchet (6). L'ensemble ainsi obtenu peut être refroidi pour que l'adhésif (7) se solidifie plus rapidement, ledit ensemble pouvant ainsi être mis en service sans qu'il soit nécessaire d'attendre longtemps avant que l'adhésif ne durcisse.
Patent CA-2190778-C (CA)
Inventor: BENES LUCE R M
IPC: A61K31/715
Filed: 1995-06-09
Granted: 2006-12-19
Abstract: A device for delivering a heparinic anticoagulant across a mucosal surface in order to achieve or maintain a therapeutically effective blood level of the heparinic anticoagulant. The device involves a matrix containing a therapeutically effective amount of a heparinic anticoagulant, and a mucoadhesive or other mechanism for maintaining the matrix in contact with the mucosal surface for a time sufficient to allow release of the heparinic anticoagulant to the mucosal surface.
Patent CA-2194688-C (CA)
Title: Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid
Inventor: PARTEN WILLIAM DAVID
IPC: C07C63/26
Filed: 1995-08-16
Granted: 2008-09-30
Abstract: In a process for production of an aromatic di--carboxylic acid such as terephthalic acid by the liquid phase oxidation of a precursor (e.g. p-xylene) thereof, an overheads stream (10) comprising aqueous aliphatic carboxylic acid is subjected to azeotropic distillation in column (12) to reduce the water content. The azeotropic distillation may be carried out using reflux of the entrainer only (22) with control of entrainer penetration to obtain a bottoms product (34) which is substantially entrainer free and contains a predetermined amount of residual water. Any aromatic dicarboxylic acid precursor present in the overheads stream is separated from the aliphatic carboxylic acid by withdrawal at a location (24) in the vicinity of the point of introduction of the feed (10) into the column. The amount of water in the bottoms product (34) may be controlled by regulation of a separate water feed (76) to the lower section of the azeotropic distillation column. In addition, regulation of the reflux rate (via line 22) may be employed to control the water content of the bottoms product and maintain column operation in the event of loss of feed to the column.
Patent CA-2195978-C (CA)
Inventor: HOULBROOK KENNETH
IPC: A61L2/06
Filed: 1995-06-26
Granted: 2005-06-07
Abstract: The invention provides that HDM (House Dust Mite) and its allergens can be treated in the breeding grounds in the home (fabrics, seats, chairs mattresses pillows sheets blankets cushions, etc.) by steam treatment followed by hot air drying. The invention also discloses that these articles can be specially adapted to receive an injection device so that the steam and hot air can be injected deep into the article core so as to penetrate outwardly to the surface to treat and heat the entire article to a high allergen de-naturing temperature.
Patent CA-2198287-C (CA)
Inventor: WICKRAMANAYAKE PALITHA
IPC: B41J2/01
Filed: 1997-02-24
Granted: 2004-05-18
Abstract: Bleed control and fast dry times are achieved in aqueous pigment dispersion- based ink-jet ink compositions by formulating the ink compositions to comprise at least one aqueous pigment dispersion and a microemulsion comprising at least one water-insoluble organic compound, at least one hydrotropic amphiphile, and water. The hydrotropic amphiphile is present in the microemulsion in an amount sufficient to solubilize the water-insoluble organic compound in water. By employing a microemulsion- based vehicle formulated in accordance with the invention, the present aqueous pigment dispersion-based ink-jet ink compositions are bleed-alleviated and fast-drying when printed onto a print media so that the throughput of an ink-jet printer may be increased.
Patent CA-2198533-C (CA)
Inventor: MALONE DAVID L
IPC: G01V1/143
Filed: 1997-02-26
Granted: 2002-06-11
Abstract: A reverse VSP system is provided and uses a frequency-controllable modulator of an MWD tool as a downhole seismic source. The modulator has a rotor and stator arranged to provide substantially sinusoidal outputs, and is controlled to provide a "Vibroseis"-type frequency sweep (preferably from 1 Hz to 50 Hz). With the bit of the MWD tool in contact with the bottom of the borehole, the force generated by the frequency-controllable modulator will generate measurable axial compressional (P-) waves. These waves which move through the formation are detected by an array of geophones on the formation surface, and a reference signal is obtained by a kelly-mounted accelerometer or strain gauge. The reference signal and signals obtained by the geophones are processed using known signal processing techniques. The disclosed downhole frequency-controllable seismic source provides many advantages including good resolution due to the ability to output a sinusoidal wave at desired frequencies and the fact that the location of the source signal is well-defined (at the bit), the ability to image formations ahead of the bit, and the ability to conduct reverse VSP processing without adding downhole hardware equipment and without requiring trips out of the well.
Patent CA-2200135-C (CA)
Title: Multipriority data flow control techniques
Inventor: KATZ MARK
IPC: H04L12/56
Filed: 1997-03-17
Granted: 2001-08-14
Abstract: Methods for controlling multipriority data flow in a communications systems having a switch fabric and one or more port cards. Each port card has, or is coupled to, a buffer. The buffer is adapted for coupling to, or is integrated into, the switch fabric. Multipriority data refers to a plurality of data types, wherein each data type is assigned a priority ranking relative to other data types. A first method monitors the occupancy of a buffer. If the occupancy exceeds a second threshold, transmission of a group of second-priority bit streams is disabled until the occupancy drops below a first threshold. If the occupancy exceeds a fourth threshold, transmission of a group of first-priority bit streams is disabled until the occupancy drops below a third threshold. A second method differs from the first method in that control is applied to, and removed from, all bit streams of a given priority level, not just a group of bit streams at this priority level, if the occupancy crosses the previously-described thresholds. A third method is a combination of the first and second methods. To start, the first method is performed. Once the occupancy exceeds a fifth threshold greater than the fourth threshold, performance of the first method ceases and performance of the second method commences.
Patent CA-2202712-C (CA)
Inventor: NEUPERT MARK A
IPC: F17D1/04
Filed: 1997-04-15
Granted: 2002-03-26
Abstract: A system for turning off the flow of natural gas into a  structure  is  used  where  the  control  is  used  on  the exterior  of  the  structure.    The  control  is  operated pneumatically and is connected by an air flow conduit to a valve that  is  located on a natural gas  feed line in the interior of a structure.
Patent CA-2209437-C (CA)
Inventor: GREEN MARVIN L
IPC: C09D163/00
Filed: 1997-06-30
Granted: 2005-06-14
Abstract: There is described a curable coating composition comprising:   (A) a carbamate-functional component that is the reaction product of:   (1) a compound comprising a plurality of hydroxyl groups, at least one of which is the result of a ring-opening reaction between an epoxy group and an organic acid group, and (2) cyanic acid or a compound comprising a carbamate group, and (B) a component comprising a plurality of groups that are reactive with the carbamate functional groups on component (A).
Patent CA-2212478-C (CA)
Title: Fabricated steer axle
Inventor: KEELER MICHAEL J
IPC: B60G9/00
Filed: 1997-08-01
Granted: 2001-05-15
Abstract: A fabricated high strength non-driven steer axle is provided so as to be cost effective to manufacture, the axle having a limited number of parts and steps of manufacture, as well as being of a reduced weight.  The axle includes an integral one piece metallic form having a substantially U-shaped central portion in cross-section, and a pair of spaced arms extending from each end thereof toward a respective king pin mounting area.          In order to simplify king pin mounting (e.g. eliminate the need for a bearing sleeve or tube), a separate king pin reinforcing plate is inserted between the spacaed arms so that each king pin is received through an orifice in the reinforcing plate and a corresponding orifice defined in another plate, both in a bearing manner so as to efficiently support the king pin.
Patent CA-2215594-C (CA)
Inventor: MOREL FREDERIC
IPC: C10G65/12
Filed: 1997-10-01
Granted: 2007-05-29
Abstract: Procédé de conversion d'une fraction lourde d'hydrocarbures qans lequel on traite la charge hydrocarbonée dans une section d'hydrodémétallisation contenant au moins un catalyseur d'hydrodémétallisation en lit fixe, on envoie au moins une partie de l'effluent liquide hydrotraité issu de l'étape a) dans une zone de distillation atmosphérique à partir de laquelle on récupère un distillat et un résidu atmosphérique, on envoie au moins une partie du résidu atmosphérique dans une zone de distillation sous vide à partir de laquelle on récupère un distillat et un résidu sous vide, au moins une partie du résidu sous vide est envoyé dans une section de désasphaltage à partir de laquelle on obtient une coupe hydrocarbonée désasphaltée et de l'asphalte résiduel, au moins une partie de la coupe hydrocarbonée désasphaltée est envoyée dans une section d'hydrotraitement, à partir de laquelle eon obtient après séparation une fraction gazeuse, une fraction carburant et une fraction liquide plus lourde de charge hydrotraitée, au moins une partie de la fraction liquide plus lourde de charge hydrotraitée est envoyé dans une section de craquage catalytique dans laquel le elle est traitée dans des conditions permettant de produire une fraction gazeuse, une fraction essence, une fraction gazole et une fraction slurry.
Patent CA-2216179-C (CA)
Title: Auxiliary fuel tank for a snowmobile
Inventor: BULLERDICK CHRISTIAN WAYNE
IPC: F02B61/00
Filed: 1997-09-23
Granted: 2003-02-11
Abstract: An auxiliary fuel tank for a snowmobile is detachably secured to the clutch guard of the snowmobile so that the tank is as remote as possible from heat producing elements of the snowmobile while being readily accessible when the cowling covering the engine is opened.
Patent CA-2220223-C (CA)
Inventor: RICHHEIMER STEVEN L
IPC: A61K47/12
Filed: 1996-05-03
Granted: 2008-07-29
Abstract: A process for the extraction and isolation of concentrated carnosic acid from plant matter of the Labiatae family including contacting the plant matter with a water-miscible solvent to form a plant extract and adjusting the pH of the plant extract to a level between 7 and while adding water in an amount sufficient to cause precipitation of impurities while retaining the carnosic acid salt in solution. The impurities are separated and the remaining aqueous solution is acidified to precipitate a highly purified carnosic acid product which is essentially odorless, flavorless and colorless.
Patent CA-2223424-C (CA)
Inventor: KLOSTERMAN BRIAN L
IPC: H04H20/00
Filed: 1996-06-06
Granted: 2013-12-03
Abstract: The present invention is directed to providing downloadable features, and more particularly to providing these features to identified receiving locations (50) in a television system (10). Features may be desired by the manufacturer for correcting software defects, updating software, or meeting compatibility requirements. Features may also be ordered by consumers who respond to solicitation advertisements (130) for those features. The data related to the features is compiled and sent from a main location (20) to multiple receiving locations (46, 48 and 50). The data is then stored in a memory (58) in the identified receiving locations (50), and software is used to install or operate the stored feature.
Patent CA-2223852-C (CA)
Inventor: NEIL GEORGE ALBERT
IPC: A47H13/04
Filed: 1997-12-05
Granted: 2004-01-20
Abstract: An arrangement for storing a variety of particles, including articles held by cards, such as those of blister packages, haying apertures. The arrangement comprises a normally horizontally extending elongated track member haying an elongated internal cavity including a slideway communicating with an underside of the track member via a slot. A series of hook elements each has an anchor part slidably retained in the slideway, and has a shank extending from the anchor part through the slot and terminating in a hook part outside the track member, this hook part being suitable for suspending the cards by their apertures while allowing individual removal of the cards. The hook parts and the cavity, or another cavity in the track member, are dimensioned to allow the hook elements to be packaged entirely within such cavity for shipping.
Patent CA-2224304-C (CA)
Title: Multi-piece rim
Inventor: WATANABE RYOICHI
IPC: B60B21/00
Filed: 1997-12-10
Granted: 2001-02-27
Abstract: A multi-piece rim includes a lock ring and a gutter band having a lock ring groove. The lock ring groove includes a bottom surface, axially inboard and outboard curved surfaces connected to opposite ends of the bottom surface, and axially inboard and outboard side surfaces connected to the axially inboard and outboard curved surfaces. A lock ring escaping groove is formed at a transition point from the axially outboard curved surface to the axially outboard side surface and a surface portion adjacent to the transition point. The lock ring escaping groove is recessed in a direction away from the lock ring.
Patent CA-2238500-C (CA)
Inventor: GEORGE GRANT E E
IPC: E21B41/00
Filed: 1998-05-14
Granted: 2005-05-03
Abstract: The invention relates to a tieback hanger for connecting the liner of a lateral well bore to the parent well bore. The tieback hanger includes a spring which maintains a constant force on the tieback hanger to prevent it from protruding into the parent well bore.