baber/WOPTO huggingface dataset:
Patent CA-2246073-A1 (CA)
Title: Clamping mechanism for keyboard support
Inventor: HAHN CHRISTOPHER T
IPC: C12N15/29
Filed: 1998-08-28
Abstract: A mechanism for supporting an auxiliary surface for vertical movement relative to a primary surface includes a pair of link elements having opposites ends pivotally connected to auxiliary and primary surface mounting elements or brackets, a first bias for opposing downwardly directed swinging movement of the link elements relative to the primary surface mounting element, a second bias for opposing pivotal downwardly directed movement of the auxiliary surface mounting element relative to the link elements, and a locking mechanism for releasably constraining swinging movement of the link elements and pivotal movement of the auxiliary surface mounting element. The locking mechanism features a roller and an operator arranged to engage with the roller when moved into a locking position to effect clamping together of the link elements and the auxiliary surface supporting element.
Patent CA-2246258-A1 (CA)
Title: Novel optical scheme for holographic imaging of complex defractive elements in materials
Inventor: GOODNO GREG D
IPC: G02B6/124
Filed: 1998-08-31
Abstract: The purpose of the invention is to take advantage of the high peak powers of short laser pulses to modify the bulk index of reaction of materials with minimal average power or least amount of heat deposition. Applications of high power femtosecond pulses are well known in this regard but generating the necessary intersecting beams to generate a complex structure requires the optical phases of the different beams remain constant or locked. Previously this phase locking of different beams requires an active feed back circuit to maintain equal beam lengths to a few 100 A's. This degree of precision can be achieved but it is sufficiently difficult that it can not be extended to multiple beams. We describe a simple optical system for holographic imaging of one-dimensional diffractive structures using ultrafast pulses. The invention can be simply adapted to image complex 3-d objects. In order to obtain spatiotemporal overlap of the laser pulses in the sample, tilted wavepackets are generated through the use of a diffractive optic beamsplitter. These wavepackets are imaged onto the sample with a spherical mirror with a 1:1 conjugate ratio to eliminate the effects of angular dispersion at the sample. This system will enable the use of ultrafast pulses in machining applications for writing periodic 1-D  structures and more complex structures with a single laser slit and provides a method for fabricating strongly modulated, large-dimension periodic structures in non-UV-photosensitive materials. The extremely high phase stability   drift for periods of hours to days) will also enable writing structures that require large accumulations of shots with a fixed pattern. Applications include rapid production of fibre optic wave guides and Bragg grating structures using undoped glass. As an example, this process would avoid the need of couplers from regular undoped fibre to doped WDM Bragg filters. The fibre could be a completely integrated system. Other important applications include the manufacture of any holographic volume diffractive element. Such optical components are typically produced using cromatized gelatin (eg. diffractive notch filters) and have finite storage times. Bulk fused silica diffractive optics would last essentially forever.  Also critical the use of conventional glass avoids all the processing and ultra clean steps required for fixing gelatin storage media. Anyone could write diffractive elements in glass in single or multiple shot exposures using this approach. Basically any complex structure to full blown 3-d holograms could be permanently stored in robust glasses or even single crystals. As another example an important potential application would be eye surgery. A  procedure can be carefully engineered into a diffractive optic and using this invention ensure the desired performance at every instance.
Patent CA-2248802-A1 (CA)
Title: Meso-substituted tripyrrane compounds, compositions, and methods for making and using the same
Inventor: DOLPHIN DAVID
IPC: C07D403/14
Filed: 1997-02-25
Abstract: A compound of formula (I) wherein: Q represents identical alkyl groups, cycloalkyl groups having from to 7 ring atoms, or aryl or heteroaryl groups having from 5 to 12 ring atoms and R represents identical hydrogen, alkyl, alcohol or carbonyl-containing groups; or a composition containing from 5 to 100 mole % by weight of the compound of formula (I). A novel method for synthesizing the compounds of formula (I) comprises the steps of: (a) reacting a compound of the formula: Q-CHO or Q-CH(OS)(OS') wherein Q is as defined above and S and S' are independently lower alkyl, an aryl group containing from 5 to 14 ring atoms, and -(CH2)n- where n=2-4, with an excess amount of a pyrrole in the presence of a catalytic amount of a strong Lewis or Bronsted acid; (b) removing any unreacted pyrrole or other solvents used by evaporation; (c) removing polymeric materials and removing the corresponding dipyrromethane by-product, leaving the compound of formula (I).
Patent CA-2253071-A1 (CA)
Title: Polymeric foam substrate and its use as in combination with decorative surfaces
Inventor: ORISEH TONY
IPC: B32B27/36
Filed: 1998-11-04
Abstract: A polymeric foam composition is provided for use as a substrate in decorative compositions having at least one decorative layer on the substrate, wherein the substrate is prepared by foaming a composition made of (i) a resin matrix of one or more polymers selected from acrylonitrile-butadiene-styrene (ABS) polymers, polycarbonates, polystyrenes, polyphenylene oxide and polyvinyl chloride polymers, preferably obtained from recycled plastics, and (ii) a filler, using one or more blowing agents. The resulting foam composition has physical and mechanical properties sufficient for its use in place of fiberboard or particle board in the preparation of various laminate based decorative products, such as laminate flooring, solid surface laminates, countertops, etc.
Patent CA-2253328-A1 (CA)
Inventor: SCHIRMBECK REINHOLD
IPC: A61K48/00
Filed: 1997-04-18
Abstract: L'invention concerne un plasmide d'expression polycistronique codant un ou plusieurs antigènes viraux et convenant (i) à l'immunisation à base d'ADN d'un patient atteint de cancer et/ou (ii) à la transfection in vitro et/ou in vivo de cellules tumorales dudit patient. L'invention se rapporte aussi aux cellules tumorales d'un patient atteint de cancer, qui sont transfectées in vitro avec un plasmide d'expression polycistronique conformément à l'invention en vue de l'injection audit patient. L'invention se rapporte également à un procédé de production d'un plasmide d'expression polycistronique conformément à l'invention, ledit procédé consistant (a) à détecter in vitro une réactivité cytolytique spécifique des cellules thymodépendantes du sang périphérique d'un patient atteint de cancer, ladite réactivité étant dirigée contre un ou plusieurs antigènes viraux, et (b) à cloner un ou plusieurs de ces antigènes viraux et, éventuellement, une ou plusieurs cytokines à l'intérieur d'un vecteur d'expression polycistronique. Enfin, l'invention se rapporte à une utilisation du vecteur d'expression polycistronique obtenu conformément au procédé conçu pour une immunothérapie du cancer et consistant à (a) injecter in vivo le vecteur d'expression polycistronique à l'intérieur de cellules tumorales du patient atteint de cancer, (b) à isoler les cellules tumorales dudit patient, à leur faire subir une transfection in vitro avec ledit vecteur d'expression polycistronique et à ré-injecter les cellules tumorales résultant de la manipulation génétique audit patient ou (c) à faire subir une transfection in vitro aux cellules tumorales isolées chez le patient atteint de cancer, avec ledit vecteur d'expression polycistronique en vue de la ré-injection des cellules tumorales résultant de la manipulation génétique dans ledit patient.
Patent CA-2253500-A1 (CA)
Inventor: DAWSON RALPH EDWARD
IPC: C06B25/34
Filed: 1997-05-02
Abstract: Explosive compositions coated with a shock sensitivity reducing agent whereby the shock sensitivity of the compositions are reduced at a statistically significant amount.
Patent CA-2255883-A1 (CA)
Title: Combustor tail tube cooling structure
Inventor: SATO YOSHICHIKA
IPC: F01D9/02
Filed: 1998-04-09
Abstract: Gas turbine combustor tail tube cooling structure is improved so that temperature distribution along tail tube axial direction is made gentle and large thermal stress is prevented from occurring resulting in enhancement of safety and reliability of the combustor tail tube. Supply jacket (16) is disposed between upstream side discharge jacket (14) and downstream side discharge jacket (15). The upstream side discharge jacket (14) is disposed parat from tail tube inlet (2) at position close to by-pass passage (10) so as to form non-cooled zone (A) in the vicinity of the tail tube inlet (2). On the downstream side thereof, the supply jacket (16) is disposed at position in tail tube (1) contracting portion and near the downstream side discharge jacket (15) so as to shorten length of cooling pipes there.
Patent CA-2256631-A1 (CA)
Title: Compounds for and a method of inhibiting matrix metalloproteinases
Inventor: PICARD JOSEPH ARMAND
IPC: C07C311/19
Filed: 1997-09-02
Abstract: The present invention relates to compounds of formula (I) that inhibit matrix metalloproteinases and to a method of inhibiting matrix metalloproteinases using the compounds, wherein Q is an un-natural amino acid. More particularly, the present invention relates to a method of treating diseases in which matrix metalloproteinases are involved such as multiple sclerosis, atherosclerotic plaque rupture, restenosis, aortic aneurism, heart failure, periodontal diseases, corneal ulceration, burns, decubital ulcers, chronic ulcers or wounds, cancer metastasis, tumor angiogenesis, arthritis, or other autoimmune or inflammatory disases dependent upon tissue invasion by leukocytes.
Patent CA-2257723-A1 (CA)
Inventor: PARKES ADRIAN SYDNEY
IPC: F16L55/11
Filed: 1997-06-19
Abstract: A liner pipe (15) for lining an existing pipe comprising a first elongate portion (14) of plastics material and including a second portion (11) extending from the first portion and having a flexibility substantially greater than the first portion to assist in insertion through an existing pipe.
Patent CA-2260122-A1 (CA)
Inventor: STAMMEN DAVID A
IPC: F16L11/04
Filed: 1997-07-07
Abstract: The present invention indicates excessive wear on the outer cover of a hose in order to help avoid unexpected ruptures and spills. The invention is a hose with an outer cover. The outer cover has two layers made of rubber or plastic.  The outer cover has an inner layer of one color (e.g. yellow) and an outer layer of another color (e.g. black). When the outer cover wears down to expose color of the inner layer, the end user is made aware that outer cover wear is approaching the reinforcement layer and that the hose should be replaced.
Patent CA-2261785-A1 (CA)
Inventor: PATHAK JAGDISH
IPC: G11C16/22
Filed: 1998-04-24
Abstract: A memory device includes a memory cell (102) whose data state is sensed by a sense amplifier (100). A balance amplifier (200) having the same construction as the sense amplifier is utilized to sense a balance cell (202) having the same construction as the memory cell. The balance cell is maintained in a erased (conductive) state. The balance cell is gated by the output of the sense amplifier. Such a device operates in a way to consume the same amount of power regardless of the data state of the memory cell. In one embodiment of the invention, a memory device consisting of a memory array includes a balance circuit associated with each of the sense amplifiers in the memory device. In another embodiment of the invention, a trim circuit (208) is used to adjust the conductivity of the balance circuit. This allows the balance circuit to be fine tuned during manufacture to compensate for process variations, thus allowing the balance circuit to be matched to the memory cells.
Patent CA-2262861-A1 (CA)
Title: System and method for updating network routing using integrated internet/two-way paging
Inventor: GOLDMAN SHELLEY B
IPC: H04M7/12
Filed: 1997-07-03
Abstract: A subscriber to a two-way paging system can configure a call routing/forwarding "speed-dial" menu for display on the subscriber's two-way pager. The subscriber can then choose from among the options in this menu each time a call is placed to the subscriber's personal telephone number (PTN). The call forwarding menu is stored in a customer routing point (CRP) database record associated with the subscriber and/or the subscriber's PTN, and is either downloaded upon creation to the subscriber's two-way pager for long-term storage in the two-way pager's memory, or downloaded to the two-way pager each time a call is made to the subscriber's PTN. In an alternative embodiment of the present invention, the subscriber can configure multiple call routing menus, and designate for each menu the caller(s) to which the menu corresponds. Thus, when a call is made to the subscriber's PTN, a determination is made as to the identity of the caller, and the appropriate call forwarding menu is then displayed on the subscriber's two-way pager.
Patent CA-2264586-A1 (CA)
Inventor: LEET L R SR
IPC: H01H9/28
Filed: 1997-09-03
Abstract: A power outlet strip (30) having at least one receptacle (13); an element (12) for receiving power from a power source; a switch (4) coupled between the receptacle (13) and the element (12) for receiving power, which operates to control power transfer to the receptacle (13); a sliding member (7); and a safety key (6) for controlling the position of the sliding member (7). When the safety key (6) is engaged in the outlet strip (30), it positions the sliding member (7) such that the switch (4) is accessible and operable by an operator. When the safety key (6) is removed from the outlet strip (30), it positions the sliding member (7) such that the switch (4) is inoperable by the operator. The outlet strip (30) also includes a switch cover (1) for covering the switch (4). The switch cover (1) has at least one leaf spring (52) and an actuating member (54). The actuating member (54) is operative for toggling the switch (4) to an OFF position when the switch cover (1) is depressed. The leaf spring (52) is operative for maintaining the actuating member (54) above the switch (4) when no pressure is applied to the switch cover (1).
Patent CA-2265475-A1 (CA)
Title: Procede pour la preparation de phenylpyridines substituees
Inventor: SCHAEFER PETER
IPC: C07D213/61
Filed: 1997-08-29
Abstract: L'invention concerne un procédé pour la préparation de phénylpyridine substituées de formule (I), caractérisé en ce que l'on fait réagir des pyridines substituées de formule (II) avec un composé aryle de formule (III).
Patent CA-2265580-A1 (CA)
Title: High strength flexible film package
Inventor: COMPTON STEPHEN F
IPC: B32B27/28
Filed: 1997-09-11
Abstract: An article, such as a bag (10), pouch, casing, or sheet formed from joined film pieces, comprises a non-crosslaminated film. The article has a parallel plate burst strength of at least 300 inches of water, more preferably, from about 300 to 2000 inches of water. The film comprises one or more of a wide variety of polymers, with linear low density polyethylene being a preferred polymer. The film is heat sealed to itself or another film (preferably a similar or identical film). Preferably, the film has a total thickness of from about 3 to 20 mils. The burst strength is surprising in view of the fact that the film is not cross-laminated.
Patent CA-2267163-A1 (CA)
Title: A method of pre-stressing a tendon
Inventor: SHAW FRANCIS DAVID
IPC: E04C/
Filed: 1997-09-26
Abstract: A tendon (10) is installed in a hole (34) in a mine hanging wall (36) by making use of a barrel (14) and a wedge arrangement (16).      One end of the tendon is anchored in the hole (34) such that the other end protrudes therefrom. The barrel (14) is positioned over the protruding end of the tendon (10). A tensioning jack applies a tensile load to the tendon (10) and an oppositely disposed load to a shear ring (20) of the barrel. When the desired preload is reached, the shear ring (20) fails permitting the tensioning jack (40) to displace wedge elements (30) of the wedge arrangement (16) inwardly thereby locking the barrel on the tendon and maintaining the desired preload in the tendon.
Patent CA-2269310-A1 (CA)
Inventor: LLANOS GERARD H
IPC: A61F2/06
Filed: 1999-04-16
Abstract: Delivery of rapamycin locally, particularly from an intravascular stem, directly from micropores in the stent body or mixed or bound to a polymer coating applied on stent, to inhibit neointimal tissue proliferation and thereby prevent restenosis. This invention also facilitates the performance of the stent in inhibiting restenosis.
Patent CA-2271151-A1 (CA)
Inventor: KOERBER WERNER
IPC: H05K9/00
Filed: 1997-04-16
Abstract: The disclosed card holder (1, 31) has a front side (29) and at least one bar-like contact spring (10; 38). The spring element is turned to the holding elements (11) provided for adapting on a front side (21, 22) a transverse rail and contact springs (14) which connect with said holding elements and present, in the direction of the outer surface (20) of the card holder, spring legs (15) spread in such a way as to extend longitudinally relative to the front element, while their spring excursions (23) approximately correspond to the ingoing and outgoing paths /24, 48) covered by the printed circuit boards.
Patent CA-2271262-A1 (CA)
Inventor: POPESCU DAN ILIE
IPC: A01G23/10
Filed: 1999-05-14
Abstract: This invention is about an installation to extract and collect the sap through vacuuming from trees and plants and comprises the connection hoses which with one end sealingly join with the cut end of the branches at the superior level of the trees at the proper size and with the other end sealingly join with the first collecting reservoir where the sap is collected and from where the sap will be distributed to the second collecting reservoir through a connection hose under vacuum conditions. The sap collected in this second collecting reservoir is distributed through the vacuum pump in the third collecting reservoir, where is collected all the volume of sap.
Patent CA-2272941-A1 (CA)
Title: Attenuation of opioid tolerance by inhibiting inducible nitric oxide synthase pathways in the treatment of pain
Inventor: SALVEMINI DANIELA
IPC: A61K31/195
Filed: 1998-01-06
Abstract: Inducible nitric oxide (iNOS) inhibitors are used to prevent and/or reverse tolerance that is seen upon prolonged usage of opioids in the clinical management of moderate to severe pain.
Patent CA-2274235-A1 (CA)
Title: Method of purifying 1,3,5-triisopropylbenzene
Inventor: CRUMBAUGH GRETCHEN MARIA
IPC: C07C7/171
Filed: 1997-12-05
Abstract: The present invention relates to a method of purifying 1,3,5triisopropylbenzene that comprises combining impure 1,3,5-triisopropylbenzene with a sulfonating agent to form a reaction mixture, mixing the reaction mixture at a temperature at about 20 ~C or above, and collecting the purified 1,3,5-triisopropylbenzene.
Patent CA-2274292-A1 (CA)
Title: Communication network system and loopback control method
Inventor: HAYAMA AKIRA
IPC: H04L12/56
Filed: 1999-06-09
Abstract: A communication network system comprises ring systems (A, B, C, D) and a common node device 20 that is connected in common to ring circuits (5A, 5B, 5C, 5D) of each of the ring systems (A, B, C, D) and that gathers data from each of the ring circuits (5A, 5B, 5C, 5D) relaying it to a relay circuit 30. The common node device 20 accommodates virtual channel paths within all the ring circuits (5A, 5B, 5C, 5D) by means of a virtual path switching path. The relay transmission is realized by means of virtual path switching control that uses this common node device 20 and virtual channel switching control that uses each of the ring nodes within the ring circuits (5A, 5B, 5C, 5D).
Patent CA-2275411-A1 (CA)
Title: Appareil et procede de parametrage rapide d'images 3d
Inventor: CHARETTE PAUL G
IPC: G01B11/25
Filed: 1997-12-19
Abstract: La présente invention a trait à un procédé et un appareil destinés au paramétrage en géométrie tridimensionnelle d'une surface tridimensionnelle. Un modèle aléatoire de speckle est projeté puis représenté sur la surface afin de produire plusieurs images numériques bidimensionnelles. Les images bidimensionnelles sont traitées de façon à donner une caractérisation tridimensionnelle de la surface. La surface lumineuse peut être modélisée pour produire un ensemble de paramètres caractérisant la surface sur la base des images numériques bidimensionnelles.
Patent CA-2276270-A1 (CA)
Title: Recipient monocouche repliable pour micro-ondes
Inventor: ZETTLE JEFFREY J
IPC: B65D21/08
Filed: 1997-12-12
Abstract: L'invention porte sur un récipient repliable de forme généralement cylindrique comprenant au moins une partie supérieure et une partie inférieure plus épaisses, et au moins une partie plus mince située entre les parties supérieure et inférieure plus épaisses. Lorsque le récipient est en position repliée, les parties supérieures et inférieures plus épaisses s'emboîtent l'une dans l'autre et emprisonnent la partie plus mince repliée. Le récipient est constitué d'une couche simple de polymère thermoplastique ayant un module de flexion compris entre 60.000 et 160.000 psi (entre 414 et 1.103 MPa) et un point de déformation à chaud à 66 psi (455 kPa) supérieur à 170 degrés Fahrenheit (77 degrés Celsius). L'invention porte également sur un procédé de fabrication dudit récipient repliable par extrusion-soufflage.
Patent CA-2276597-A1 (CA)
Title: Feeding element for fibrous material
Inventor: VIRVING NILS
IPC: D21B1/26
Filed: 1998-02-05
Abstract: A feeding element intended for refiners with two opposed refining means (11, 12), one of which is stationary and one rotary, which are provided with refining elements (14, 15), which between themselves form a refining gap (17) with a refining zone (16) for working lignocellulosic fibrous material.      A feeding device (20, 22) is located centrally inside the refining gap (17). The feeding element (30) is intended to be placed on the rotary refining means (12) in the refining gap (17} directly outside the feeding device (20, 22). The feeding element (30) is formed with at least one feeding bar (31), where the upper edge (33) of each feeding bar projects out on at least one side of the bar.
Patent CA-2277576-A1 (CA)
Inventor: OHYAMA EIJI
IPC: F16H57/035
Filed: 1999-07-13
Abstract: A housing 2 for a vehicular transmission comprises a first room R1 which accommodates a continuous speed change mechanism and a second room R2 which accommodates a driving force transmission mechanism including a starting mechanism, a reduction train, a differential mechanism, a power supply mechanism for an oil pump, etc. In each room, inlet openings 72 through 74 for oil discharge passages are provided near and above both the sides of an oil pan 26 in the horizontal direction perpendicular to the input and output shafts of the continuous speed change mechanism, to return lubrication oil to the oil pan 26. Also, walls 61 through 65 are provided in the rooms to lead the lubrication oil into the respective inlet openings. In this construction, the lubrication oil returning from each room to the oil pan 26 is stabilized at each room and discharged to the oil pan 26, and thereby the lubrication oil achieves homogeneity in the oil pan 26.