baber/WOPTO huggingface dataset:
Patent CA-2222423-C (CA)
Title: Encased retroreflective elements and method for making
Inventor: STUMP LARRY K
IPC: E01F9/50
Filed: 1996-05-17
Granted: 2006-04-25
Abstract: A retroreflective element (50) that exhibits exceptional wet retroreflectivity, and a method of manufacturing the same. The retroreflective element includes an assembly having a multi-sided retroreflector (20) and a clear thermoplastic (52). In one embodiment, the clear thermoplastic is at least partially thermally deformed to create a convex retroreflective dome for capturing high incident angle light rays. The retroreflective elements may be used in a pavement marking system, such as attached to pavement marking tape or deposited in pavement marking paint.
Patent CA-2226425-C (CA)
Inventor: JAIN UDAY
IPC: A61K47/16
Filed: 1996-06-21
Granted: 2009-08-18
Abstract: A stabilized patch device for transdermal drug delivery of steroid drugs containing a 3-keto-4-en functional group is described, wherein the patch comprises an effective amount of the steroid drug and a carrier that is free of acid functional groups. The device can further contain additives such as a penetration enhancer or excipient, so long as such additives are also free of acid functional groups. The device can be either a matrix patch or a liquid reservoir patch. In a matrix patch, the carrier is a biocompatible polymeric adhesive with which the steroid drug is intimately admixed. The adhesive is preferably an acrylic polymer or copolymer. In a liquid reservoir patch, the carrier is a controlled-viscosity composition containing a thinner or thickener. Preferred steroid drugs include certain corticosteroids and sex hormones, such as progestins and androgens. A method of stabilizing such steroid drugs during storage in transdermal patches is also disclosed.
Patent CA-2227352-C (CA)
Inventor: JACKSON OKSU SIN
IPC: A41B11/00
Filed: 1998-01-16
Granted: 2003-09-09
Abstract: A fleece sock is made from a first blank of fleece material of a length and width to cover the foot and to encompass at least part of the ankle of a wearer, the blank having an arcuate cut-out in each side thereof in the region to be occupied by the heel of the wearer and being folded in half to align the cutouts, and a second, generally circular blank of fleece material formed into a separate heel cup having arcuate marginal edges. The marginal edges of the heel cup are aligned with and secured to the marginal edges of the arcuate cut-outs in the first blank, and the remaining marginal edges of the first blank are secured to one another to form a seam that extends along one side of the foot and ankle of the wearer. The two blanks as thus secured together form a sock with seamless plantar and dorsal surfaces, a seamless side surface, a fitted heel cup and at least a partial ankle encompassing portion. The heel cup mitigates creeping of the sock down over the heel of the wearer and balling of the sock under the wearer's foot. The sock fits comformably to the wearer's foot and has large seamless areas and minimal stitching to insure wearer comfort.
Patent CA-2228738-C (CA)
Inventor: MARKER TERRY L
IPC: C07C9/02
Filed: 1998-02-02
Granted: 2006-09-26
Abstract: Light olefins are produced from a hydrocarbon gas stream by a combination of steam reforming, oxygenate production, and oxygenate conversion to olefin wherein a crude methanol stream - produced in the production of oxygenates and comprising methanol, light ends, and heavier alcohols - is passed directly to the oxygenate conversion zone for the production of light olefins. Furthermore, the combination provides the synergy for increased catalyst life and reduced water treatment costs by recycling by-product water produced in the oxygenate conversion zone to provide water to the steam reforming zone. The advantage of this integration is the elimination of costly methanol separation and purification steps which result in the overall reduction in the costs of producing the light olefins.  In addition, a portion of the by-product water can be combined with a propylene stream to provide a high octane blending component for gasoline. The propylene and butylene fractions produced by the above integrated scheme are further converted to high octane ether and other high value products.
Patent CA-2231825-C (CA)
Title: Printed circuit transformer hybrids for rf mixers
Inventor: DOBROVOLNY PIERRE
IPC: H01F17/00
Filed: 1998-03-11
Granted: 2002-02-12
Abstract: A high frequency partial transformer hybrid includes a first divided circular conductive element affixed to one side of an insulated substrate and a second split circular conductive element affixed to the other side of the substrate juxtaposed to the first element. Plated-through holes in the substrate interconnect pads on the first and second elements. Connection tabs on the elements are adapted to be connected to conductors on a printed circuit board when the substrate is orthogonally supported in a rectangular recess in the substrate. In a transformer hybrid embodiment, a third continuous circular conductive element is supported on an additional substrate in alignment with and insulated from the second element.    The third element also includes connection tabs that are connectable to the conductors on the printed circuit board.
Patent CA-2232576-C (CA)
Title: Systeme d'amorcage comprenant un amorceur sylile pour la (co)polymerisation anionique de monomeres (meth)acryliques, et procede l'utilisant
Inventor: MULLER AXEL H E
IPC: C08F20/32
Filed: 1998-04-07
Granted: 2002-06-04
Abstract: Un système d'amorçage qui comprend (1) au moins un amorceur silylé et (2) au moins un alcoolate de métal alcalin comme ligand. L'amorceur silylé peut être monofonctionnel et choisi  notamment  parmi  les  composés  de  formule  (I)  ou bifonctionnel et choisi notamment parmi les composés de formule  (II):       dans lesquels R1, R2, R3 représentent, chancun, indépendamment, un radical alkyle, linéaire ou ramifié, en C1-C8; R4 est un radical alkylène linéaire ou ramifié en C1-C8; M est un métal alcalin ou alcalino-terreux (valence q de 1 ou 2); R5 et R6 représentent,  chacun,  indépendamment,  un  radical  alkyle, linéaire ou ramifié, en C1-C8; R7, R8 représentent, chacun, indépendamment, un radical alkylène, linéaire ou ramifié, en C1-C8; M' est un métal alcalin. Ce système est utilisable pour la préparation de (co)polymères(méth)acryliques.
Patent CA-2232580-C (CA)
Title: Method and apparatus for temporarily immobilizing a local area of tissue
Inventor: JANSEN ERIK W L
IPC: A61B19/00
Filed: 1996-09-19
Granted: 2007-07-24
Abstract: A method and apparatus for temporarily immobilizing a local area of tissue. In particular, the present invention provides a method and apparatus for temporarily immobilizing a local area of heart tissue to thereby permit surgery on a coronary vessel in that area without significant deterioration of the pumping function of the beating heart. The local area of heart tissue is immobilized to a degree sufficient to permit minimally invasive or micro-surgery on that area of the heart. The present invention features a suction device to accomplish the immobilization. The suction device is coupled to a source of negative pressure. The suction device has a series of suction ports on one surface. Suction through the device causes suction to be maintained at the ports. The device further is shaped to conform to the surface of the heart. Thus, when the device is placed on the surface of the heart and suction is created, the suction through the ports engages the surface of the heart. The suction device is further fixed or immobilized to a stationary object, such as an operating table or a sternal or rib retractor. Thus, the local area of the heart near the suction device is temporarily fixed or immobilized relative to the stationary object while suction is maintained. In such a fashion, the coronary artery may be immobilized even though the heart itself is still beating so that a bypass graft may be performed. In addition the suction device may be used in either a conventional, open-chest environment or in a minimally-invasive environment, e.g. endoscopic.
Patent CA-2234148-C (CA)
Title: Method and anastomotic instrument for use when performing an end-to-side anastomosis
Inventor: RYGAARD JORGEN A
IPC: A61B/
Filed: 1995-10-31
Granted: 2002-01-08
Abstract: When performing an end-to-side anastomosis connecting the end (10) of a firs t vessel (9) to the edge region (12) around an opening in the side wall of a second vessel (11), an instrument (1) is used having a circumferential stapling anvil (3) secured to an anvil tube (2) accommodating the first vess el (9), the end of which is everted about the anvil (3) with the intima of the end region (10) facing the intima of the edge region (12), when the instrume nt (1) with the first vessel (9) in place has been inserted into the opening in  the second vessel (11). Then, a clamping tube (5) is advanced towards the anvil (3), clamping the end (10) and edge region (12) together against the anvil (3). In the next step, a number of stapling plungers (6) carrying staples (7) are advanced towards the anvil (3), the latter having staple- bending surfaces (4), thus stapling the two vessels together in a manner not  shown. Finally, the clamping tube (5) and the stapling plungers (6) are withdrawn, and the whole instrument removed from the anastomosis.
Patent CA-2236830-C (CA)
Inventor: HILL DAVID ROY
IPC: H01Q21/08
Filed: 1998-06-04
Granted: 2003-01-07
Abstract: A skewed Log Periodic Dipole Array (LPDA) used as the element in a linear or planar array, serves to remove the element spacing restriction and hence eliminates tile grating lobe problem. The skewed form of the device has all dipoles greater in length than the shortest one, i.e. the highest frequency one, skewed such that they are "Z" shaped. When the angle between the end and center segments of the Z dipole is 90 degrees, the skewed LPDA has a constant width equal to the length of the highest frequency dipole.
Patent CA-2240026-C (CA)
Inventor: DING CHIH-SHUN
IPC: H04R3/00
Filed: 1996-12-12
Granted: 2001-08-07
Abstract: A sound reproduction system employs an amplifier system and a speaker (40).  The speaker (40) provides two negative feedback signals, one (92) indicative of the current through the speaker voice coil and a second (93) indicative of the velocity of the speaker diaphragm. The velocity signal is provided via feedback path (93) to an input of the amplifier system. The current signal (92) is provided by the second feedback path through a bandpass filter to the amplifier input. The velocity measurement may be derived from a second voice coil (42) coupled to the diaphragm, or may be derived from a piezoelectric sensor coupled thereto. The current signal may be derived from the voltage drop across a resistor (50) placed in series with the speaker voice coil (41).
Patent CA-2240514-C (CA)
Title: Robust electrical utility meter
Inventor: BOND RANDAL K
IPC: G01R21/133
Filed: 1998-06-15
Granted: 2008-11-04
Abstract: The present invention includes an electrical utility meter operable to measure power consumption. The method detects and compensates for one or more wiring errors that affects the power consumption measurement of the electrical utility meter. The method includes the steps of: obtaining measured phase angle data for a plurality of phases in a polyphase electrical system; periodically performing one or more diagnostic tests using the measured phase angle data to determine whether a wiring error is present, automatically adjusting the operation of the electrical utility meter to effect a compensation for the wiring error, said compensation increasing an accuracy of power consumption measurement of the electrical utility meter. The meter is operable to detect and compensate for wiring errors including polarity errors and cross phasing errors. According to another method of the present invention, the meter is operable to determine automatically the service type to which it is connected.
Patent CA-2241022-C (CA)
Inventor: WITTELER HELMUT
IPC: H01M8/1027
Filed: 1996-12-20
Granted: 2009-04-28
Abstract: The invention relates to a process for the production of laminates which contain at least one centrally arranged ion-conductive membrane electroconductively bonded at least by way of a substantial part of the two opposing, flat sides thereof to at least one catalytically active substance and to at least one flat, gas-permeable, electron-conducting contacting material. At least two of the said components of the laminates have been bonded by lamination. The process is characterised in that there is continuous bonding of the ion-conductive membrane, the catalytically active susbtance and the electron-conducting contacting material. The ion-conductive membrane and at least the electron-conducting contacting material are brought together and are precisely positioned by transporting and feed means, and both components are laminated and bonded to each other by being pressed together.  The extent of fluctuation of the impedances of the laminates produced by the said method is   10 %. The laminates are particularly suitable for use in fuel cells or electrolyzers.
Patent CA-2248926-C (CA)
Title: Acheminement de telecommunications basees sur le format du message
Inventor: TITMUSS RICHARD JOHN
IPC: H04M3/00
Filed: 1997-03-27
Granted: 2002-05-14
Abstract: Dispositif de télécommunication permettant de sélectionner et d'acheminer un signal destiné à l'usager vers un terminal déterminé parmi plusieurs terminaux situés à proximité de l'usager, et fonctionnant en conformité avec différents formats de signaux, en accord avec le format d'un signal donné.
Patent CA-2249246-C (CA)
Inventor: LOVELAND JAMES B
IPC: G06Q10/06
Filed: 1998-09-30
Granted: 2004-09-28
Abstract: A method and system for modeling rooms or chambers in a structure for intuitive and accurate estimation of process parameters (e.g., material and labor costs for performing the process) associated with the rooms. A graphical user interface to an estimation program enables an estimator to insert a model of a room and thereafter morph and mold the model to approximate the room undergoing estimation. The model is represented as a polyhedron having a plurality of planes that may be assigned attributes such as floors, walls and ceilings. During the morphing process, the modified and other affected planes of the polyhedron are continually revised to maintain the integrity of the closed volume represented by the polyhedron. Upon completion of the morphing process of the model, the model may be queried by the estimator for performing estimations of target processes with the assigned attributes of the various planes intelligently returning areas and other parameters associated with the estimation polyhedron employed as an approximation of the room or chamber undergoing estimation.
Patent CA-2253137-C (CA)
Inventor: HERR JOEL L
IPC: D06F37/22
Filed: 1998-10-30
Granted: 2003-04-08
Abstract: A radially mounted motor is provided in a closed system fluid balance ring for high rotational speed washing machines.  The motor is mounted at an orientation of 90° relative to the rotational axis of the washing machine spinner.  Such an orientation prevents adverse effects on the motor contacts from centrifugal forces generated by the rotating spinner. A 90° orientation also eliminates deflection of the motor shaft and excessive friction on the motor bearings.  The angular orientation of the motor assures proper functioning of the closed system fluid balance ring of the washing machine.  The balance system also includes a valve to control movement of fluid within the ring.  The valve is mounted at an angle with respect to a tangent of the spinner so as to prevent detrimental effects from the centrifugal forces of the rotating spinner.
Patent CA-2257749-C (CA)
Title: Device for the intraocular transfer of active products by iontophoresis
Inventor: PAREL JEAN-MARIE
IPC: A61F9/00
Filed: 1999-01-04
Granted: 2009-03-24
Abstract: The invention relates to a device for transferring at least one active product, in particular a medicament, into the eyeball by iontophoresis, comprising a reservoir of active product, which can- be applied to a patient's eye. The reservoir has at least one active surface electrode arranged facing an eye tissue lying at the periphery of the cornea a return electrode and a current generator. The return electrode is preferably in contact with the patient's partly closed eyelids
Patent CA-2258803-C (CA)
Inventor: CRAWFORD J FRED
IPC: C12N1/38
Filed: 1997-06-18
Granted: 2009-01-13
Abstract: Cette invention se rapporte à un milieu de culture cellulaire permettant d'effectuer une analyse biochimique de la fonction antioxydante dans des lymphocytes humains. Ce milieu comprend une solution tamponnée sans sérum contenant les ingrédients suivants: un hydrate de carbone choisi dans le groupe constitué de glucose et d'un composé biologiquement capable de produire du glucose dans de telles cellules, une forme biologiquement utilisable d'acide pantothénique, de la choline ou une forme biologiquement utilisable d'une substance capable de produire de la choline dans de telles cellules, des ions inorganiques comprenant du chlorure, du phosphate, du calcium, du magnésium, du potassium, du sodium et du fer sous une forme biologiquement utilisable, de l'hydroperoxyde de cumène, de l'eau désionisée et un mitogène selon une quantité propre à stimuler les lymphocytes en cours d'analyse. Cette solution tamponnée sans sérum possède un pH compris entre environ 6,8 et 7,6. Ledit milieu de culture cellulaire se caractérise par sa capacité à déterminer les déficiences nutritionnelles, les insuffisances et les déséquilibres et par sa capacité à produire une analyse biochimique de la fonction antioxydante des lymphocytes. Cette invention concerne également un procédé pour l'analyse biochimique de la fonction antioxydante cellulaire chez un individu, ce procédé consistant: à inoculer dans le milieu de culture cellulaire de cette invention des lymphocytes provenant de cet individu; à laisser incuber ce milieu de culture cellulaire après l'inoculation; et à comparer la réponse des lymphocytes avec la réponse moyenne des lymphocytes provenant d'un groupe témoin d'individus.
Patent CA-2268839-C (CA)
Inventor: WHELCHEL WAYNE CURTIS
IPC: B32B5/08
Filed: 1997-12-17
Granted: 2002-11-19
Abstract: A composite floor covering having an upper decorative layer, a stabilizing layer, and an optional cushioning layer is characterized in that the decorative layer itself comprises a fabric base and a plastic matrix having a transparent portion. The plastic matrix may include an opaque portion. At least the transparent portion of the plastic matrix has discrete fibrous structures embedded therein. The plastic matrix material is selected with melting and rheological characteristics such that the plastic matrix is prepared and applied to the fabric base in fluid form and solidifies under conditions at which the fabric base and embedded fibrous structures remain substantially intact. The fabric layer may be totally embedded within the plastic matrix or may form the lower surface of the plastic matrix. The decorative layer may include (i) fabric fragments, (ii) groupings of multi-oriented individual fibers, or (iii) mixtures of fragments and individual fibers. The fabric base may, if desired, have a decorative facing.
Patent CA-2269925-C (CA)
Inventor: YAN RAN-HONG
IPC: H04L25/02
Filed: 1999-04-26
Granted: 2004-02-03
Abstract: The invention includes method and apparatus for estimating channel impulse response and data in a signal transmitted over a channel in a communication system. The channel impulse response is estimated and then, using the estimated channel impulse response, the data in the signal is estimated. The output is then fed back to the channel impulse response estimator and the channel impulse estimation is repeated. The data estimation and channel impulse response estimation may be iterated a number of times. The channel impulse response estimating step uses correlative channel sounding.
Patent CA-2271533-C (CA)
Inventor: NGUYEN DUNG QUOC
IPC: G06F9/38
Filed: 1999-05-12
Granted: 2001-12-04
Abstract: Each execution unit within a superscalar processor has an associated completion table that contains a copy of the status of all instructions dispatched but not completed. A central completion table maintains the status of every dispatched instruction as reported by the dispatch unit and the individual execution units. Execution units send finish signals to the completion table responsible for retiring a particular type of instruction. The central completion table retires instructions that may cause an interrupt and instructions whose results may target the same register. The execution units' associated completion tables retire the balance of the instructions and the execution units send instruction status to the central completion table and to each execution unit.  This reduces the number of instructions that are retired by the central completion table,increasing the number of instructions retired per clock cycle.
Patent CA-2273249-C (CA)
Inventor: VAN OOIJ WIM J
IPC: B05D7/00
Filed: 1998-01-08
Granted: 2006-12-05
Abstract: Procédé servant à empêcher la corrosion de métaux au moyen de silanes. Ce procédé consiste à appliquer une première solution de traitement directement sur la surface du métal, ladite première solution de traitement contenant au moins un silane multifonctionnel possédant au moins deux groupes silyle trisubstitués et les substituants étant choisis individuellement dans le groupe constitué par alkoxy et acétoxy. On peut également utiliser une deuxième solution de traitement éventuelle contenant un silane organofonctionnel, en particulier, si le métal doit être peint.
Patent CA-2274579-C (CA)
Title: Catalyst/wax separation device for slurry fischer-tropsch reactor
Inventor: BENHAM CHARLES B
IPC: C10G2/00
Filed: 1997-12-15
Granted: 2008-08-05
Abstract: Catalyst particles are separated from the wax in a Fisher-Tropsch reactor by feeding a portion of the reactor slurry to a dynamic settler which does not require any pump. As the slurry flows down a pipe in the center of the settler, the slurry flows into the surrounding annular region at the bottom of the settler. The heavier catalyst particles settle down and are removed as the slurry at the bottom of the settler is recycled back to the reactor. The wax rises up in the annular section and this clarified wax is removed by a wax outlet pipe. In an embodiment with an expanded diameter section above the Fisher-Tropsch reactor an additional dynamic settler can be placed inside this section. The Fischer-Tropsch catalyst can be regenerated by purging the catalyst with an inert gas for a period of time and by treating the catalyst with naphtha.
Patent CA-2275279-C (CA)
Title: Computer executable workflow resource management system
Inventor: HAWKS VERLYN D
IPC: G06Q10/10
Filed: 1997-12-18
Granted: 2009-12-29
Abstract: A computer system executable method is provided for managing resources in an automated workflow system for manipulating a work item. A first definitional data item affecting how the workflow system processes work items meeting a predetermined criteria is stored in a memory. A directive is received to remove the first definitional data item from the memory. A mark associated with the first definitional data item is set to indicate that the first definitional data item is to be removed from the memory. The mark is used to prevent a second definitional data item from being made dependent on the first definitional data item after the mark was set. It is determined whether any other definitional data items are dependent on the first definitional data item. Depending on the outcome of the determination, the first definitional data item is removed from the memory.