baber/WOPTO huggingface dataset:
Patent CA-2230272-A1 (CA)
Title: Isomerization of bisphenols
Inventor: TASSET EMMETT L
IPC: C07C37/20
Filed: 1996-08-23
Abstract: A catalyst useful for the condensation of an aldehyde or ketone starting material with a phenol was an insoluble mercaptosulfonic acid compound. The heterogeneous catalysts comprise catalytically-active species represented by formula (II). L was an optional linking group and - was a bond, which catalytically-active species was attached by the bond - to an insoluble organic or inorganic support; or a catalytically-active species represented by formula (III), wherein L' was an optional linking group, - was a bond and .theta.' and .theta." were residues of .theta., and a and b were independently selected from integers equal to or greater than 1. These catalysts isomerize o,p-bisphenols to p,p-bisphenols.
Patent CA-2233461-A1 (CA)
Title: Disposal method for fuel oil and crude oil spills
Inventor: KOSUGI KAZUMASA
IPC: B01D17/02
Filed: 1998-03-27
Abstract: A method for easily decomposing viscous, solidified spilled fuel oil or crude oil containing sea water and other disposal inhibiting substances is provided.      Titanium dioxide particles are added to viscous spilled fuel oil recovered in drums in a weight ratio of at least 0.2 to 1 times.      Fuel oil is specifically adsorbed by the adsorbent (S1) and the mixture can be suspended in water (S2). The suspension is filtered by a coarse filter to remove substances interfering with disposal of the oil (3). This filtrate is passed through a high performance filter (of sufficiently fine mesh to retain the adsorbent) so that the adsorbent is recovered, and sea water and other substances are discarded (S5).
Patent CA-2234850-A1 (CA)
Inventor: MALCHOW VOLKER
IPC: G02C7/04
Filed: 1998-05-08
Abstract: A multifocal contact lens has a substantially spherical lens body that has a substantially convex outer surface, a substantially concave inner surface, and an optical central point, with a horizontal and a vertical axis that intersect in the optical central point.  These axes are horizontal and vertical in the sense that the lens being worn on a human eye is in a usually upright position.  The lens has a centrally arranged optical zone, a lens outer region, and an rim region, and at least two thickened regions arranged on the outer lens region, between the optical zone and the rim region and laterally of the vertical mid-axis, for setting a given orientation of the contact lens relative to the human eye.  A prescribed near vision value, at least in a lower visual region, and a prescribed far vision value in an upper visual region are distributed on the surface of the lens body.  The transition between the visual regions is smoothed, and each of the visual regions is individually corrected, at least for spherical aberration, independently of the other visual region.
Patent CA-2235488-A1 (CA)
Title: An electrosurgical instrument
Inventor: GOBLE COLIN CHARLES OWEN
IPC: A61B18/12
Filed: 1996-10-21
Abstract: A cordless electrosurgical instrument has a handpiece (10), and a single treatment electrode (12) projecting from one end of the handpiece (10). Contained within the handpiece (10) are a radio frequency generator, a battery and an electrically conductive shield which surrounds the generator but is isolated from it. Radio frequency return currents between the generator and the patient flow by virtue of capacitive coupling between generator circuitry and the patient, mainly via the shield and the surgeon holding the instrument.
Patent CA-2236725-A1 (CA)
Inventor: TEAFORD RICHARD L
IPC: F42B3/18
Filed: 1998-05-29
Abstract: An electrically conductive system including an apparatus and method wherein an electric current is sealingly passed through at least two spaced insulatively sealed zones with an insulatively sealed void space provided therebetween under a vacuum and serving as a discharge zone for possible inadvertent preignition brought about accidentally by outside external factors.
Patent CA-2248777-A1 (CA)
Title: Electrolytic composite electrode
Inventor: TAKAYASU TERUKI
IPC: C25D17/12
Filed: 1996-03-14
Abstract: An electrolytic composite electrode provided with a cathode formed from a drum to be rotated and an anode having a circular-arc inner surface facing the cathode at a certain interval and capable of keeping an electrolytic solution between the anode and the cathode.  The anode comprises a first electrode substrate at least whose portion contacting the electrolytic solution is made of a corrosion-resistant metal and which has a plurality of female screw portions provided along a line parallel with the rotation axis of the drum, a second electrode substrate whose one side is covered with an electrode catalyst and which is formed with a titanium tie plate divided on a plurality of parting faces paral-lel with the rotation axis of the drum and has a plural-ity of holes formed on the center axis parallel with the parting faces, a bolt screwed to the female screw por-tion of the first electrode substrate to secure the second electrode substrate to the first electrode sub-strate, a first intermediate member provided for the circumferential portion of the bolt between the first electrode substrate and the second electrode substrate, and a second intermediate member provided for the vicin-ity of the circumference of the second electrode sub-strate between the first electrode substrate and the second electrode substrate.
Patent CA-2250029-A1 (CA)
Title: Cellular immunotherapy
Inventor: RIDIHALGH JOHN L
IPC: C12N5/0783
Filed: 1997-02-20
Abstract: Broadly, disclosed is a novel approach to the adoptive cellular therapy of HIV infection that exploits the potentially effective cellular immune response that is initially generated in HIV-infected individuals. One aspect is a method for preparing cells for treating patients afflicted with human immunodeficiency virus (HIV), which includes subjecting cytokine-producing cells derived from lymph nodes excised from patients infected with HIV to mitogenic stimulation in serum-free media for their expansion. The resulting therapeutic agent for treating patients afflicted with human immunodeficiency virus (HIV) includes in a pharmaceutically-acceptable carrier cytokineproducing cells having been produced by the step of subjecting cytokineproducing cells derived from lymph nodes excised from patients infected with HIV to mitogenic stimulation in serum-free media for their expansion. As another aspect of the present invention, disclosed is a method for treating patients afflicted with human immunodeficiency virus (HIV) which includes administering to the patient an effective amount of the therapeutic agent disclosed herein. The invention also is capable of inhibiting replication of HIV as measured by the viral load reductions exhibited by patients that receive the inventive therapeutic and in inducing an immunorestorative effect in HIV patients.
Patent CA-2252500-A1 (CA)
Title: Printing plate mounting structure
Inventor: LEADER CHARLES B JR
IPC: B41F27/12
Filed: 1997-04-18
Abstract: An apparatus (10) for mounting flexible printing plates (P) on a printing cylinder (30) includes a base (12) rotatably supporting a printing cylinder (30) in a predetermined position and support having a turntable (92) for supporting a flexible printing plate (P) having a reference point thereon and a front plate support (180) mounted adjacent the front of the turntable (92). Means (156) for selectively moving front plate support (180) and an associated pressure roll (160) toward and away from the turntable (92) to facilitate the application of the flexible printing plate (P) onto the printing cylinder (30) in a predetermined position.
Patent CA-2253348-A1 (CA)
Inventor: SMEEKENS JOSEPHUS CHRISTIANUS
IPC: C12N5/06
Filed: 1997-05-02
Abstract: The invention lies in the field of regulation of carbon flow in the metabolism of the cell. It has been found that induction of a change in the intracellular availability of the saccharide trehalose-6-phosphate (T-6-P) induces modifications of the development and/or composition of cells, tissue and organs in vivo. These changes can be induced by introducing or inhibiting the enzymes trehalose phosphate synthase (TPS) which is capable of forming T-6-P and trehalose phosphate phosphatase (TPP) which degrades T-6-P into trehalose. The carbon flow through the glycolysis will be stimulated by a decrease in the intracellular level of T-6-P.
Patent CA-2254650-A1 (CA)
Title: Sputtering method and apparatus with optical monitoring
Inventor: CLARKE GLENN A
IPC: H01J37/32
Filed: 1998-11-30
Abstract: In a method of sputtering thin films onto a substrate, the substrate is placed below a sputtering source assembly in a vacuum chamber. A light beam is projected onto the substrate and passes through an optical passage in the sputtering source assembly. In this way, the growth of the sputtered film can be accurately monitored at near normal angles of incidence.
Patent CA-2255365-A1 (CA)
Title: Comminuting apparatus
Inventor: KOTTMANN NORBERT
IPC: B02C18/14
Filed: 1998-12-09
Abstract: A comminuting apparatus has a housing and a crushing area. The housing includes left and right bearing plates, left and right reinforcing, bearing and holdback plates, each with clearing and crushing prongs. The crushing unit includes left and right crushing shafts which are rotationally supported by the housing are interconnected to rotate in opposite directions, synchronously.  Each crushing shaft includes a number of radially-extending tool carries having tool heads which carry clearing devices and front and rear wear inserts, in seats within the tool heads. The crushing unit can be configured to provide clearing spacing between adjacent clearing devices of adjacent tool carriers, or to provide an overlap thereof. The clearing and crushing prongs are arranged between each of the tool carriers. An intermediate crushing area is formed between the left anti right crushing shafts. The tool carriers can include relatively high and low tool heads to provide differing peripheral rates of rotation for the tools which define inner and outer spheres of actions.
Patent CA-2256171-A1 (CA)
Title: Micro-strip antenna having bi-directional or non-directional characteristic
Inventor: HIRABE MASASHI
IPC: H01Q9/04
Filed: 1998-12-15
Abstract: There is provided an antenna including (a) a first micro-strip antenna, (b) a second micro-strip antenna spaced away from and facing the first micro-strip antenna, (c) a round plate located between the first and second micro-strip antennas, the ground plate being formed with an opening between the first and second micro-strip antennas, (d) a first dielectric material sandwiched between the first micro-strip antenna and the ground plate, (e) a second dielectric material sandwiched between the second micro-strip antenna and the ground plate, and (i) a micro-strip line formed on a surface of the first dielectric material and connected to the first micro-strip antenna. In accordance with the when electromagnetic wave is supplied to the first micro-strip antenna, the first micro-strip antenna resonates and radiates electromagnetic waves to atmosphere therearound. The second micro-strip antenna is electromagnetically coupled to the first micro-strip antenna through the opening formed at the ground plate. Asa result, the second micro-strip antenna resonates to the first micro-strip antenna to thereby radiate electromagnetic waves to atmosphere similarly to the first micro-strip antenna. Hence, the antenna is able to have bi-directional or non-directional characteristic. In addition, since electric power is supplied only to the first micro-strip antenna, it is no longer necessary for the antenna to include a three-dimensional power distributor unlike a conventional antenna, ensuring thatthe antenna can be fabricated in a smaller size.
Patent CA-2257509-A1 (CA)
Inventor: KEPNER BRYAN E
IPC: B01D53/02
Filed: 1997-06-09
Abstract: This invention relates to a process for producing an enhanced adsorbent particle comprising contacting a non-amorphous, non-ceramic, crystalline, porous, calcined, aluminum oxide particle that was produced by calcining at a particle temperature of from 300 ~C to 700 ~C, with an acid for a sufficient time to increase the adsorbent properties of the particle. A process for producing an enhanced adsorbent particle comprising contacting a non-ceramic, porous, oxide adsorbent particle with an acid for a sufficient time to increase the adsorbent properties of the particle is also disclosed. Particles made by the process of the instant invention and particle uses, such as remediation of waste streams, are also provided. The invention also relates to a method for producing an adsorbent and/or catalyst and binder system. The invention also relates to particles made by the process, binders, and methods for remediating contaminants in a stream. The invention also relates to an anchored adsorbent and/or catalyst and binder system.
Patent CA-2263102-A1 (CA)
Title: Compositions comprising microparticles of water-insoluble substances and method for preparing same
Inventor: PARIKH INDU
IPC: A61K49/00
Filed: 1997-03-28
Abstract: Submicron size particles of pharmaceutical or other water-insoluble or poorly water-insoluble substances are prepared using a combination of one or more surface modifiers/surfactants such as polaxomers, poloxamines, polyoxyethylene sorbitan fatty acid esters and the like together with natural or synthetic phospholipids. Particles so produced have a volume weighted mean particle size at least one-half smaller than obtainable using a phospolipid alone. Compositions so prepared are resistant to particle size growth on storage.
Patent CA-2263886-A1 (CA)
Title: Method for treating and preventing heart failure and ventricular dilatation
Inventor: PRESSLER MILTON LETHAN
IPC: A61K31/00
Filed: 1997-12-02
Abstract: Matrix metalloproteinase inhibitors are useful for preventing and treating heart failure, and ventricular dilatation in mammals.
Patent CA-2264814-A1 (CA)
Title: Kit de reparation pour retroviseur exterieur reglable de vehicules
Inventor: WHITING SCOTT F
IPC: G02B7/182
Filed: 1996-09-10
Abstract: L'invention concerne un kit de réparation (10) destiné à réparer et monter en rattrapage un rétroviseur extérieur réglable (16) d'un véhicule comportant quatre ensembles support de fixation pliables (20, 40, 60, 80), chaque ensemble possédant une vis de réglage (28, 48, 68, 84) s'engageant dans le rétroviseur de façon à régler la position du rétroviseur extérieur dans son boîtier (12). Le kit de réparation comprend également quatre morceaux de bande adhésive double face (32, 52, 72, 92), chaque bande permettant de fixer et monter chacun des ensembles support de fixation sur la surface intérieure (14) du boîtier. Chacun de ces ensembles support de fixation comporte également un élément de base (22, 42, 62, 82) doté d'une surface inférieure de manière à y faire adhérer un côté de la bande adhésive double face.
Patent CA-2266171-A1 (CA)
Inventor: CHOWDHARY MANJIT S
IPC: C08B37/00
Filed: 1999-03-17
Abstract: A method for the preparation of high DS amphoteric guar gum derivatives comprising reacting guar gum in an alcohol medium with alkaline base and a cationic reagent and then in the same alcohol medium with an excess of alkaline base and an anionic reagent, the cationic reagent containing an amino, ammonium, imino, sulfonium or phosphonium group and the anionic reagent containing a carboxyl, sulfonate, sulfate, phosphate or phosphonate group. Each of the cationic and anionic groups having a DS of from about 0.05 to 1 and preferably 0.1 to 1.
Patent CA-2266768-A1 (CA)
Inventor: KALVERKAMP KLEMENS
IPC: A01D33/02
Filed: 1999-03-24
Abstract: A potato harvesting machine (1) with a pick-up device (2) for at least one potato bank (3), a screen conveying device (4), particularly a screen conveyor belt (7), which adjoins the pick-up device (2), and a device (8) for removing stems and leaves, is constructed so that the device (8) for removing stems and leaves is disposed above the working end of the screen conveying device (4).
Patent CA-2267082-A1 (CA)
Inventor: ABBOTT RICHARD C
IPC: H01J27/08
Filed: 1997-10-03
Abstract: L'invention se rapporte à la fabrication de matériaux et de structures ayant des propriétés mécaniques, électriques et thermiques sélectionnées. L'invention concerne plus particulièrement l'utilisation de ces matériaux et de ces structures dans des systèmes d'implantation d'ions. Des structures comprenant des matériaux à base de bore servent de composants que l'on utilise dans des implanteurs comprenant des chambres à arc où est généré un faisceau d'ions qui s'implante dans une cible telle qu'une plaquette de semi-conducteur.
Patent CA-2267487-A1 (CA)
Title: Method and apparatus for texture level of detail dithering
Inventor: TAYLOR RALPH CLAYTON
IPC: G06T15/04
Filed: 1999-03-29
Abstract: A computationally efficient method for minimizing the visible effects of texture LOD  transitions across a polygon. The minimization is accomplished by adding a dithering offset value to the LOD value computed for each pixel covered by a graphics primitive to produce a dithered pixel LOD  value. The dithering offsets mat be generated from a table look-up based on the location of the pixel within a span of pixels. The dithered pixel LOD value is used to as an index in the selection of a single LOD texture map from which a textured pixel value is retrieved. The range of dithering offset values can be adjusted by modulating the values in the table look--up.
Patent CA-2269069-A1 (CA)
Title: System and method for optimized storage and retrieval of data on a distributed computer network
Inventor: KARUSH ARNOLD
IPC: H04L29/06
Filed: 1997-10-20
Abstract: A system and method for the optimized storage and retrieval of video data at distributed sites call for the deployment of "Smart Minor" sites (26, 28, 30) throughout a network (10), each of which maintains a copy of certain data managed by the system. Every user (12, 16, 20) is assigned to a specific delivery site based on an analysis of network performance with respect to each of the available delivery sites. Generalized network performance data is collected and stored to facilitate the selection of additional delivery sites and to ensure the preservation of improved performance in comparison to traditional networks.
Patent CA-2270885-A1 (CA)
Inventor: MORRIS ROBERT L II
IPC: B60R1/10
Filed: 1997-03-07
Abstract: A vehicular visual safety device (100) including a pair of mirror assemblies (102). The mirror pair includes a planar reflecting foward-most mirror assembly (106) and a convex object rear-most mirror assembly (108) each having an upper edge that lies in respective vertical planes that are substantially parallel with each other. A frame assembly (104) is provided to adjustably secure the mirror pair within the interior of a vehicle. The frame assembly has substantially parallel forward and rear sides (110F, 110R) each having tracks that adjustably receive the forward-most and rear-most mirrors, respectively. The mirrors can be laterally rotated and secured at any one of many predetermined locations along their respective tracks so as to provide the driver with a view of a substantial area external to the opposite side of the vehicle lateral, forward and below the level of the front view window and the front portion of the vehicle.
Patent CA-2272555-A1 (CA)
Inventor: NORELL MARIA
IPC: D21H17/37
Filed: 1997-12-05
Abstract: The invention relates to a process for the production of paper on a paper machine containing a dilution headbox in which a main aqueous flow containing cellulosic fibres and filler is mixed in said headbox with a diluting aqueous flow to form a resulting aqueous flow which is ejected onto a wire and dewatered to form a web of paper, wherein one or more components providing improved retention are introduced into the main aqueous flow and an additive resulting in slower dewatering and/or being selected from non-ionic and anionic organic polymers is introduced into the diluting aqueous flow.
Patent CA-2273972-A1 (CA)
Title: A diffuser for aerating a fluid
Inventor: MICHAEL MARK MONIER
IPC: C02F3/20
Filed: 1997-11-12
Abstract: A diffuser for aerating a fluid, and particularly for aeration in waste water treatment tanks, is formed in an elongate configuration by manufacturing a base plate (1) from an extrusion cut to the desired length. A  perforated elastomeric membrane (6) is secured to the base plate (1) by pressing sealing strips (5) along the elongate edges of the membrane into corresponding grooves (4) formed in the base plate extrusion. The ends of the membrane are sealed to the base plate by end strips or clamps. Air is introduced through aperture (23) in the base plate causing the membrane (6) to inflate away from the base plate forming an interior compartment (11) for the passage of air along the diffuser. Apparatus for securing the diffuser to a horizontal header pipe is also described.
Patent CA-2275700-A1 (CA)
Inventor: SMITH CECIL D
IPC: H04B10/29
Filed: 1998-10-21
Abstract: L'invention concerne un sélecteur de remodulation de canal pour un système de télécommunication par fibre optique multiplexé en répartition de longueurs d'onde (MRL). Ce sélecteur de remodulation reçoit un signal d'entrée MRL, sélectionne un canal optique particulier à partir du signal MRL et place l'information du signal sélectionné dans un signal de sortie nouvellement produit. La longueur d'ondes du signal optique de sortie peut être identique ou différente de celle des canaux optiques comprenant le signal d'entrée MRL. Lorsqu'ils sont utilisés dans un système de télécommunication par fibre optique comprenant des remodulateurs à l'entrée d'émission, ces sélecteurs de remodulation assurent une maîtrise totale des interfaces avec les émetteurs et récepteurs optiques, et permettent l'utilisation d'un large éventail de dispositifs optiques. Les remodulateurs comprennent un système de correction aval des erreurs (FEC).
Patent CA-2276693-A1 (CA)
Inventor: THOMAS MARC
IPC: G01M7/00
Filed: 1999-06-28
Abstract: A vibration testing apparatus using acoustical waves comprises a testing unit including a main enclosure defining a main acoustical cavity and having a baffle provided with a main opening which is aligned with a set of acoustical insulation bands receiving an article to be tested that are clamped on a fixture secured to the baffle, so that the main opening is substantially closed by the article and the acoustical insulation bands. The apparatus includes a main acoustical source comprising a main acoustical transducer such as a loudspeaker which is acoustically coupled to the main acoustical cavity, and a subsystem for driving the loudspeaker which generates acoustical waves imparting vibration to the article accordingly. The testing unit are preferably contained in an acoustic insulation chamber. The driving subsystem preferably comprises a controller for generating an excitation input signal having a desired frequency spectrum and an amplifier for generating therefrom an electrical output signal to be fed to the loudspeaker. The controller is preferably implemented in a feedback configuration using a transducer such as an accelerometer of a microphone for providing the required input control signal. The apparatus preferably comprise a further acoustical source in the form of one or more further loudspeakers facing the main loudspeaker with the baffle extending therebetween, showing complementary frequency operating ranges, and being respectively fed by with first and second electrical output signals having respective complementary frequency spectrums adjacent a crossover cutoff frequency. The first and second electrical output signals are preferably in opposed phase relationship in the area of the crossover cutoff frequency to provide better power efficiency. The apparatus and method according to the invention provide improved control over the power spectral density profile of the imparted vibration. The apparatus is particularly useful for ESS testing a printed circuit board, or several PCB's simultaneously using a special fixture therefor.