baber/WOPTO huggingface dataset:
Patent CA-2171735-A1 (CA)
Title: Method of applying polymers to razor blade cutting edges
Inventor: TRANKIEM HOANG MAI
IPC: B05D3/00
Filed: 1994-09-20
Abstract: A method of manufacturing a razor blade (2) is disclosed wherein a polymer material is coated onto the blade cutting edge (3). The polymer material is applied to the blade edge in a coating solution after which the blade is heated to melt the polymer via a radio frequency source, preferably a microwave source.
Patent CA-2172034-A1 (CA)
Title: Structured adhesive closure systems
Inventor: BOYER CHARLES E III
IPC: C09J7/20
Filed: 1994-09-26
Abstract: A tape closure system for attaching two opposing substrates. The tape closure system comprises a pressuresensitive adhesive tape tab having one end permanently attached to one substrate and a second free end releasably attached to the second opposing substrate. The free end is provided with a textured adhesive to improve releasable adhesion performance.
Patent CA-2172200-A1 (CA)
Inventor: LONG HERBERT D JR
IPC: B66C11/00
Filed: 1996-03-20
Abstract: A trolley having an operating position suspended from an overhead load carrying beam of a crane.  The trolley has upward extending arms having wheels mounted at their upper ends for supporting the trolley on rails affixed to the beam.   Drive motors are mounted on the arms adjacent the wheels for moving the trolley along the beam.   The arms are pivotally connected at their lower ends to a trolley platform which carries a hoist.          The arms may be pivoted outward and downward during factory assembly of the trolley to facilitate mounting of the wheels and drive motors on the arms.  During shipment of the trolley, the arms may be pivoted inwardly of the platform to minimize the trolley width.  The arms may also be pivoted to assist in mounting the trolley on the beam.
Patent CA-2174134-A1 (CA)
Title: Information communication systems
Inventor: IVIE LOVELL BRENT
IPC: H01R13/518
Filed: 1995-08-14
Abstract: A system for distributing electronic information signals throughout a structure, particularly a residential dwelling, is disclosed. The disclosed apparatus also adapts a plurality of electronic information signals to be received by one or more information utilizing devices which are located throughout a structure. In accordance with particular aspects of the present invention, an improved structure and method of installing a plurality of communication cables (280) in a wall adjacent to an existing electrical box (252) attached to a building member (16) is disclosed. The system allows home theater components to be easily and properly set up or changed.
Patent CA-2176102-A1 (CA)
Title: Subirrigation system and related method
Inventor: BUXTON JACK W
IPC: A01G27/06
Filed: 1996-05-08
Abstract: A subirrigation system is provided for growing plants.  The subirrigation system includes: (a) a level bench with waterproof surface; (b) a reservoir for holding a supply of water/nutrient solution below the bench; (c) a mechanism for maintaining a substantially constant level of water/nutrient solution in the reservoir; (d) capillary matting material layered over the waterproof surface of the bench; and (e) at least one container of plant growing medium with plant or seed positioned on the bench.  Utilizing this subirrigation system methods have also been developed for maintaining a substantially constant water/air ratio in containers filled with plant growing medium and for determining a ratio of water/air to be maintained to optimize plant growth conditions.
Patent CA-2176193-A1 (CA)
Title: Methods for polymerase chain reaction preamplification sterilization by exonucleases in the presence of phosphorothioated primers
Inventor: BACKUS JOHN WESLEY
IPC: C12Q1/68
Filed: 1996-05-09
Abstract: The present invention provides admixtures and methods for PCR amplification of a target nucleic acid in which amplification efficiency is increased by including phosphorothioated oligonucleotide primers and an exonuclease in the PCR reaction mix.  Kits for amplification of a target nucleic acid are also provided.
Patent CA-2182965-A1 (CA)
Title: Moulded plastic parts with a plastic matrix filled with inorganic fillers
Inventor: HARKE STEFAN
IPC: C08K3/00
Filed: 1995-03-04
Abstract: To improve the resistance to scratching of plastic molded articles comprising a polymer matrix filled with inorganic fillers, the filler content being 50 to 90 % by weight in relation to the filled matrix, it is suggested that the filler comprise two filler fractions (a) and (b), wherein the filler fraction (a) has a particle size distribution with 98 % by weight of the particles having a particle size <= 150 µm and is distributed essentially uniformly in the polymer matrix, and wherein the filler fraction (b) comprises particles having a particle size of approximately 300 µm to approximately 3000 µm, wherein the proportion of the filler fraction (b) is approximately 1 to 35 % by weight of the total filler content, and wherein the proportion of the filler fraction (b) in an outer surface layer of the molded article is enriched to at least 30 % by weight in relation to the total mass of the filled matrix.
Patent CA-2184560-A1 (CA)
Inventor: KUHLBURGER JEAN-JACQUES
IPC: B29C48/04
Filed: 1996-08-30
Abstract: The present invention relates to a process for extruding, under a controlled atmosphere made up of inert gas, a polyethylene mixed with and/or containing a reactive gas liable to react with the polyethylene in the extrusion conditions, in an extruder fed with polyethylene by a feed hopper. The process is characterised in that an inert purging gas is introduced into the extruder in a zone where the poly-ethylene is not completely melted and at a distance from the feed hopper such that the inert purging gas introduced forms a gas mixture with the reactive gas entrained with the polyethylene into the extruder and then flows back in the direction of the feed hopper countercurrentwise to the flow of the polyethylene and is discharged out of the extruder.
Patent CA-2184837-A1 (CA)
Inventor: BLANKENBURG RAINER
IPC: C08F2/38
Filed: 1996-09-04
Abstract: A process for the preparation of low-pyrrolidone, low, molecular weight homopolymers of N-vinylpyrrolidone by solution polymeriza-tion in aqueous medium in the presence of a compound which forms free radicals, wherein the polymerization is carried out in the presence of a polymerization regulator which has a transfer constant Cx greater than 0.01.
Patent CA-2185430-A1 (CA)
Inventor: TOKAI SHIGERU
IPC: B21D5/02
Filed: 1995-03-27
Abstract: Pour plier une pièce, le système calcule une position temporaire d'attaque du coulisseau à partir, d'une part de conditions de fonctionnement introduites via un dispositif d'introduction de conditions de fonctionnement, et d'autre part de données d'angle de détente correspondant à l'angle de flexion à donner à une pièce stockées dans un fichier "angles de détente". Le coulisseau est ensuite amené à cette position temporaire, ce qui permet de déterminer un angle de flexion au moyen d'un instrument de mesure d'angle. Après cette opération, le système calcule la position d'attaque définitive à partir de l'angle de flexion ainsi mesuré, du niveau d'attaque du coulisseau rapporté à l'angle de flexion de pièce stocké dans un fichier "angles de flexion / niveau d'attaque", et de l'angle de détente rapporté à l'angle de flexion à donner à la pièce stocké dans le fichier "angles de détente". Le coulisseau est ensuite amené à la position d'attaque définitive ainsi calculée pour achever l'opération de pliage.
Patent CA-2187659-A1 (CA)
Inventor: STEGER CHRISTOPHER J
IPC: A47L9/00
Filed: 1996-10-10
Abstract: An improved muffler for vacuum cleaners and other product applications is disclosed. The muffler includes a muffler body or enlarged head with a smaller hollow shaft extending from an open end of the muffler body or enlarged head for attachment to an exhaust of a vacuum cleaner or other application. The smaller hollow shaft terminates short of a transverse end wall of the muffler body. The transverse end wall may be constructed as a separate cover element. A noise dampening element is positioned adjacent the transverse end wall and also along an inner circumferential wall of the muffler body in order to dampen noise transmitted from the vacuum cleaner exhaust that passes through the smaller hollow shaft into the muffler body for absorption by the noise dampening element prior to being diverted by the transverse end wall in an opposite direction through the open end of the muffler body.
Patent CA-2190087-A1 (CA)
Title: Nitro compounds and their compositions having anti-inflammatory, analgesic and anti-thrombotic activities
Inventor: DEL SOLDATO PIERO
IPC: C07D487/04
Filed: 1995-04-04
Abstract: New compounds and their compositions having anti-inflammatory, analgesic and anti-thrombotic activities, of the general formula: A-X1-NO2 or their salts, wherein: A is R(COXu)t, wherein t is zero or 1 and u is zero or 1; and X is O, NH or NR1C wherein R1C is C1-C10 alkyl; and R is Ia) wherein R1 is acetoxy, preferably in ortho-position with respect to -CO- and R2 is hydrogen; or derivatives of acetylsalylsalicyclic acid; and X1 is -YO- wherein Y is C1-C20 alkylene, C5-C7 cycloalkylene, oxy-alkyl derivatives and oxy-methyl benzyl derivatives.
Patent CA-2191081-A1 (CA)
Title: Process for removal of metal compounds in lignocellulosic pulp
Inventor: SAMUELSSON HANS OLOV
IPC: D21C9/10
Filed: 1995-04-21
Abstract: The present invention solves the problem of suppressing disturbing effects of transition and alkaline earth metal compounds during bleaching of chemically digested lignocellulosic pulp in a sequence with oxygen bleaching prior to oxidative stages with introduction of for instance ozone, superoxides, hydrogen peroxide and peroxy acids. The conditions during the oxygen bleaching are chosen so that the properties of these metal compounds are changed and the compounds removed from the pulp during the oxygen bleaching under such conditions that the attack on the cellulose is small and the fluctuations of the pulp quality due to fluctuating amounts of these metal compounds decrease markedly.
Patent CA-2196589-A1 (CA)
Inventor: HEAU CHRISTOPHE
IPC: C01B21/076
Filed: 1997-01-31
Abstract: Nitrure de titane dopé par du bore, cristallisant dans la même structure que le nitrure de titane TiN, et ayant une microdureté Vickers supérieure à environ 50 GPa. Revêtement antiusure constitué d'un tel nitrure de titane dopé par du bore. Pièces, par exemple pièces métalliques, pièces en carbure de tungstène et cermets, comportant un tel revêtement.
Patent CA-2199442-A1 (CA)
Title: Method for adaptive filtering of well logging data
Inventor: PLASEK RONALD
IPC: G01V1/48
Filed: 1997-03-07
Abstract: The invention described herein provides for an intelligent or "adaptable" filtering method that could be applied when filtering log data. In the present invention, for a given filter model, the adaptive filtering technique differentiates between true changes in the formation or borehole quantity measured and what canbe considered to be just a "statistical fluctuation". So, when in long constant-value intervals (data deviations do not exceed those predicted by statistical theory) the filter will automatically increase the number of filter levels used, thereby providing a large reduction (smoothing) of the statistical variations. However, when approaching a spot where there is a true change in the quantity being measured (data deviations over and above those predicted by statistics) the filter will automatically and smoothly decrease, on both sides of this spot, thereby preserving the sharpness of the bed boundary or borehole fluid contact and also preserving the true shape of a thin geologic bed.
Patent CA-2200625-A1 (CA)
Inventor: TACK ROBERT DRYDEN
IPC: C10L1/16
Filed: 1995-10-19
Abstract: On décrit un additif améliorant le fluage à froid, à base d'un dendrimère.
Patent CA-2201355-A1 (CA)
Inventor: SOMMERMEYER KLAUS
IPC: C08B30/12
Filed: 1995-09-26
Abstract: L'invention concerne un procédé de fabrication de produits de décomposition d'amidon présentant une répartition étroite du poids moléculaire, ledit procédé consistant à traiter l'amidon ou ses dérivés par homogénéisation à haute pression. Ce procédé permet d'obtenir, avec un rendement élevé, des produits de décomposition d'amidon présentant une répartition étroite du poids moléculaire.
Patent CA-2203371-A1 (CA)
Title: Stress steering structure
Inventor: OWENS CHARLES R
IPC: E04B1/19
Filed: 1995-10-20
Abstract: A load-bearing structure having a set of uniform voids (12) functions to resolve the forces imposed by developing compression in the material having the voids (12) and minimizing the amount of tension developed in the material. For the voids (12) to have this function, they must be deployed in a particular fashion. The voids (12) are deployed to encompass a particular set of points. The set of points are such that each point in the matrix is spaced an equal distance from twelve and only twelve adjacent points of the matrix. The distance between the points does not matter as long as all are uniformly distanced in accordance with that rule. If the structure is considered to be composed of a closely packed set of hypothetical rhombic dodecahedra (RD) and the four-edge vertices of each of those hypothetical RDs are truncated, the result will be a set of cubic voids (12). The center of each of those cubic voids (12) will define the matrix referred to above, and the cubic voids (12) will serve to provide the optimum resolution of stress which minimizes the development of tension in the material. One in four of the hypothetical or mathematical RDs can be eliminated achieving the same force resolution result in a structure that contains less material. The shape and size, but not the position, of the voids (12) can be varied with only slight loss in optimum stress resolution. Some voids (12) can be omitted with only slight loss of optimum stress resolution.
Patent CA-2206017-A1 (CA)
Inventor: HIGGINBOTHAM JAMES ROBBIE
IPC: E21B47/12
Filed: 1997-05-23
Abstract: A downhole drill bit drive motor for use in drilling boreholes in the earth comprising an outer case, a drive motor supported within the outer case and a mechanical shafting assembly to provide a driving torque to an attached drill bit.  A coupling is provided connected to the mechanical shafting assembly to provide mechanical connection to and to accommodate eccentric or angular motions of the drive motor.  There is also a bearing assembly to provide radial and axial support for the mechanical shafting assembly.  A bilateral electrical conductor extends axially through the motor, the coupling and the mechanical shafting assembly to a connection proximate the drill bit.  The electrical conductor includes at least one electrically conducting wire, and at least one rotary electrical connection providing rotational capability for the at least one conducting wire.
Patent CA-2206678-A1 (CA)
Title: Automated crustacean cleaning and cutting apparatus and method of using same
Inventor: KING STEVEN
IPC: A22C29/00
Filed: 1997-06-04
Abstract: An automated crustacean processing apparatus is featured. The apparatus provides automated scrubbing of the leg portions of the crustacean at high speed and volume and additionally maximizes the amount of leg processable. A cutting arrangement is provided to severe the legs from the body portions with minimum wastage of the vendible leg material. The process and apparatus have marked advantages over the conventional manual processes currently employed in the art.
Patent CA-2206878-A1 (CA)
Inventor: WEIS ALEXANDER L
IPC: C07H21/00
Filed: 1996-09-23
Abstract: L'invention porte sur des dimères de nucléosides dont l'un au moins des nucléosides comporte un sucre L, ainsi que sur des préparations pharmaceutiques les contenant.
Patent CA-2206985-A1 (CA)
Title: Use of alkoxylated alkanolamide together with alkoxylated alcohol as a friction-reducing agent
Inventor: HARWIGSSON IAN
IPC: C10M105/18
Filed: 1996-01-09
Abstract: Use of a mixture of at least one alkanolamide of general formula (I), wherein R is a hydrocarbon group having 7-23 carbon atoms, preferably 11-23 carbons atoms, A is an alkyleneoxy group having 2-4 carbon atoms and n is 2-12, preferably 2-8, and at least one alkoxylated alcohol in a weight ratio between the alkoxylated alkanolamide and the alkoxylated alcohol from 10:1 to 1:10, preferably in the range from 5:1 to 1:5 for producing a water-base liquid system with reduced flow resistance between the flowing, water-base liquid system and a solid surface.
Patent CA-2210035-A1 (CA)
Title: Torch valve assembly
Inventor: FARNHAM GILBERT ROLAND
IPC: F16K1/30
Filed: 1997-07-09
Abstract: A torch valve for pressurized fuel includes a valve body having a central, axial bore and a valve needle threadedly mounted in the bore for selectable axial positioning in the bore. A inlet portion of the bore forms an inlet connectable to a source of pressurized fuel. A second portion of the bore carries the valve needle. An outlet passage communicates with the bore at a point approximately where the second portion joins the first portion. The outlet passage extends laterally from the bore to open at an outlet orifice on the outer surface of the valve body. The outlet orifice includes means for attaching a torch and igniter assembly to the valve body. The needle includes a stem that terminates in a needle tip. An annular ridge extends from the stem spaced from the tip and defines a first groove between the ridge and stem. A second groove is formed in the stem spaced from the first groove. Each of the first and second grooves carries a resilient sealing ring. The second groove and ring seal the outlet passage from the ambient environment. By positioning the needle valve with the first groove and ring between the outlet passage and the inlet, the outlet is closed from the inlet. A spring and pin arrangement is coupled with the needle on the inlet side of the valve body to regulate the pressure of gas in the outlet passage.
Patent CA-2211314-A1 (CA)
Inventor: LEONARD WILLIAM
IPC: A61P31/04
Filed: 1996-02-06
Abstract: There is disclosed a novel process for preparing aza cyclohexapep-tides of formula (I) where all variables are defined herein.
Patent CA-2215554-A1 (CA)
Title: Chromatography valve assembly
Inventor: PINKHAM LOUIS V
IPC: F16K27/00
Filed: 1997-09-15
Abstract: A unitarily formed diverter valve assembly for use in liquid chromatography.  The valve assembly comprises a plurality of inlet and outlet ports, diverter valve systems, chambers, and a tortuous network of passageways all of which are arranged to accommodate the flow of fluids in a liquid chromatography system. The valve assembly is configured so as to direct the flow of fluid coming from an inlet port through the valve body where it can then be reversibly directed into or out of a chromatography column.  On returning form the column, the fluid reenters the valve assembly where it is directed to an outlet port in order to exit the system.  The valve assembly can also be configured so as to bypass the column altogether.  Since the entire valve assembly is machined out of a single block of material having smooth liquid passageways, and since all flow compartments are shared and fully flushed when a flow-through valve is opened, dead-legs are virtually eliminated from the system.
Patent CA-2218941-A1 (CA)
Inventor: ASPLUND GUNNAR
IPC: H02H9/02
Filed: 1997-11-12
Abstract: Apparatus and method for limiting current in a direct voltage network of a HVDC power distribution system. A direct voltage network is connected to an alternating voltage network through a VSC-converter. At least one parallel connection including a semiconductor switching element is connected in series with the direct voltage network. A surge diverter is connected in parallel with the semiconductor switching element. During a high current condition in the direct voltage network, the switching element is switched off interrupting the current flow which is then diverted through the surge diverter which reduces the current flowing in the direct voltage network. By inserting a plurality of parallel connections, and selectively turning off a number of said semiconductor switching elements, a number of different levels of over current conditions in said direct voltage network may be controlled.
Patent CA-2220118-A1 (CA)
Title: Phosphorescent balloons
Inventor: RONDEAU BRUCE ALFRED
IPC: B64B1/50
Filed: 1998-01-20
Abstract: This would be a balloon that would have lumilux pigment which absorbs light and emitts it after excitation mixed with latex or plastic to produce a balloon that when subjected to light would then have a phosphorescent glow.
Patent CA-2220415-A1 (CA)
Title: Latent transcripts and promoters of cytomegalovirus
Inventor: MOCARSKI EDWARD S JR
IPC: C12P21/08
Filed: 1996-05-22
Abstract: The present invention provides methods and compositions relating to cytomegalovirus (CMV) latent transcripts, latency-associated polypeptides and antibodies directed against such polypeptide. The polypeptides are encoded by CMV DNA sequences and are produced specifically during latent infection. Also provided are methods of detecting CMV in a sample, particularly CMV in a latent state. The methods include RT-PCR-based methods and immunodiagnostic methods.
Patent CA-2222125-A1 (CA)
Title: Procede de traitement de l'hyperplasie prostatique benigne a l'aide d'une therapie thermique
Inventor: NORSTED STEVEN W
IPC: A61N5/02
Filed: 1996-06-24
Abstract: Ce procédé de traitement d'un individu présentant un tissu prostatique malade, comme dans l'hyperplasie prostatique bénigne, consiste à introduire un cathéter (28) dans l'urètre (10), afin de positionner, à proximité d'une région prostatique de l'urètre (10), une antenne (74) hyperfréquence placée dans le cathéter (28). Cette antenne (74) est ensuite excitée dans une plage de puissance donnée, afin d'appliquer une énergie hyperfréquence sensiblement continue sur le tissu prostatique (96) et porter, pendant une certaine durée, le tissu (96) qui entoure l'antenne (74) à une certaine température, la température et la durée devant être suffisantes pour provoquer la nécrose du tissu prostatique (96).
Patent CA-2227004-A1 (CA)
Title: Sunscreen compositions
Inventor: STEHLEIN ALBERT
IPC: A61K8/98
Filed: 1996-07-11
Abstract: The present invention provides a method of producing a composition, suitable for use in pharmaceutical or cosmetic compositions, comprising a micronised insoluble organic UV absorber, which method comprises grinding the insoluble organic UV absorber, in coarse particle form, in a grinding apparatus, in the presence of 0.1 to 30 %  by weight of an alkyl polyglucoside having the formula C n H2n+1O(C6H10O5)x H, in which n is an integer ranging from 8 to 16 and x is the mean polymerisation level of the glucoside moiety (C6H10O5) and ranges from 1.4 to 1.6, or an ester thereof.