baber/WOPTO huggingface dataset:
Patent CA-2109956-C (CA)
Title: Nitroglycerine plaster and process for making it
Inventor: KLEIN ROBERT PETER
IPC: A61P9/08
Filed: 1992-05-25
Granted: 1998-05-05
Abstract: The invention relates to a dermal plaster for the transdermal provision of nitroglycerine consisting of a carrier film and a removable protective film and a special adhesive mass containing nitroglycerine on the basis of a cross-linked acrylatevinyl acetate copolymer in which the monomer mix used for polymerisation contains 21 to 40% wt. vinyl acetate, 55 to 70% wt. of an acrylic acid-C2-8-alkyl ester and 3 to 10% wt. of an acrylic acid-C2-4-hydroxyalkyl ester and which is cross-linked by heating and the removal of any solvents present after the addition of a customary cross-linking agent and the nitroglycerine. The special adhesive mass of the invention has not only a high absorption capacity but also a high and controllable capacity for giving off nitroglycerine so that the delivery area of the plaster can be kept small for the necessary quantity to be delivered daily and hence the cost of the plaster is very low. At the same time, the manufacturing process is simplified by the simple adhesive compound, there is not need for the addition of further substances to improve the transepidermal conveyance of substances and the cost of the plaster can thus be kept down and the risk of skin irritation is avoided.
Patent CA-2113541-C (CA)
Inventor: AMPULSKI ROBERT S
IPC: D21H/
Filed: 1992-06-29
Granted: 2000-05-16
Abstract: Disclosed is a process for making soft tissue paper which includes the steps of wet-laying cellulosic fibers to form a web; drying the web and elevating the web temperature, creping the hot web, and applying low levels of a polysiloxane material to the hot, creped web. Preferably, the hot web is dried to a moisture level below its equilibrium moisture content before application of the polysiloxane material. The process may further include the steps of applying an effective amount of a surfactant material to enhance softness and/or wettability control; and/or an effective amount of a binder material such as starch, for linting control, and/or to contribute tensile strength to the tissue paper.
Patent CA-2115157-C (CA)
Title: Multiple optical fiber splice
Inventor: DOSS DONALD G
IPC: G02B6/38
Filed: 1992-07-28
Granted: 2004-05-25
Abstract: A device for splicing multiple optical fibers includes a generally rectangular body (12) which is essentially comprised of a jacket (14) and a cap (16). Splice (10) also includes a splice element (18) and longitudinal actuation means (20) far applying pressure to splice element (18). In the preferred embodiment; actuation means (20) comprises a wedge (22) having surfaces defining an acute angle, which is captured between jacket (14) and cap (16).     A tongue (24), which is integrally molded with cap (16), is advantageously interposed between wedge (22) and splice element (18) as discussed further below. Jacket (14) has a longitudinal slot (26), rectangular in cross-section and extending through jacket (14), for receiving a splice element (18)slot (26) is slightly shorter than splice element (18), allowing both ends of element (18) to extend beyond the ends of slot (26). Jacket (14) also has an integrally molded male coupling element or projection (28) which fits within a cavity (30) formed in cap (16). Projection (28) has two transverse bumps (32) which snap into recesses (34) of cap (16), providing a snug fit between jacket (14) and cap (16). Jacket (14) and cap (16) each have extensions (36) and (38), respectively, which receive end covers (40) and (42), respectively. Extensions (36) and (38) have recessed surfaces which support the fibers at the entrance to slot (26). End covers (40) and (42) impart protection to the spliced fibers and splice element (l8) against Environmental influences. End covers (40) and (42) are attached to extensions (36) and (38) of the jacket and cap, respectively, by any convenient means, such as arcuate jaws (44) which snap onto and rotatably grip trunnions (46). The end covers may advantageously include collapsible compartments filled with a sealant material whereby, when the covers are moved to the closed positions, the sealant material is channeled towards the slot containing the splice element.
Patent CA-2120641-C (CA)
Inventor: LARSON JOHN A
IPC: B25B23/142
Filed: 1994-04-06
Granted: 2005-11-15
Abstract: An antifriction force transmission, especially useful in torque wrenches comprises a freely rotatable cylindrical roller, opposed interface reaction surfaces in cooperative relation with the roller, and the roller and the reaction surfaces cooperating for effecting relative separating movement of the reaction surfaces when at least one of the reaction surfaces is caused to move transversely relative to the other of the reaction surfaces.
Patent CA-2121088-C (CA)
Title: Vector processor
Inventor: FUJIWARA YOSHIFUMI
IPC: G06F9/38
Filed: 1994-04-12
Granted: 1998-10-13
Abstract: For a set of addresses of list vectors output from an address buffer, a coincidence between the set and another set and a coincidence between the set and a set of addresses of preceding accesses held in preceding address holding registers in an address coincidence detector are detected by address comparator circuits in the address coincidence detector.  Information from the address coincidence detector is held in a coincidence information holding circuit and output to a controller and a bank manager.  The bank manager estimates possibility of occurrence of bank conflict.  The controller controls a crossbar and selectors such that accesses having coincident addresses are omitted and only requests having addresses which are not coincident are sent to a storage.          A data switch circuit includes preceding data holding registers respectively corresponding to preceding address holding registers and selects data corresponding to the omitted accesses from the preceding data holding registers on the basis of address coincidence information held in the coincidence information holding circuit.
Patent CA-2121773-C (CA)
Title: Peel-away endoscopic retrograde cholangio pancreatography catheter and a method for using the same
Inventor: KARPIEL JOHN
IPC: A61M25/06
Filed: 1994-04-20
Granted: 1999-07-06
Abstract: A peel-away endoscopic retrograde cholangio pancreatography catheter and a method for using the same is provided.  An endoscope having a passage therethrough is introduced into the mouth of a patient and is guided through the patent's gastroentral tract until an opening at the distal end of the endoscope is in close proximity with the papilla of vater leading to the common bile and pancreatic ducts.  A peel-away ERCP catheter is provided which may be guided through the lumen of the endoscope until the distal tip of the catheter emerges from the opening at the distal end of the endoscope.  The distal end of the catheter may be guided through the sphincter of oddi and into the common bile or pancreatic duct.  A radiopaque dye may be injected through the catheter, into the duct.  Additionally, a guide wire may be guided into the common bile or pancreatic duct through the catheter.  Thereafter, the catheter may be easily removed without disturbing the placement of the guide wire by pulling on knobs attached to tabs at the proximal end of the catheter while the proximal end of the guide wire is held in place. The force applied to the catheter tabs causes the catheter to split longitudinally along two longitudinal grooves cut into the body of the catheter.  Thus, the catheter peels-away from the guide wire without displacing the guide wire. Simultaneously, the pulling force on the tabs splits the catheter away from the guide wire while pulling the catheter up the guide wire.  Additionally, a biliary stent can be pushed into the duct using a second peel-away catheter which may then be removed in accordance with the method of the present invention.
Patent CA-2129459-C (CA)
Inventor: DAS PRALAY K
IPC: E21B47/00
Filed: 1994-08-04
Granted: 2004-04-06
Abstract: A load cell for sensing weight and torque on a drill bit during a drilling operation includes a cylindrical load cell made from a material with minimum residual stress. A plurality of strain gages are arranged symmetrically on each load cell and electrically coupled to form two Wheatstone bridges. The load cells are mounted 180 degrees apart in radial pockets drilled in a drill collar wall. A half Wheatstone bridge from one load cell is electrically coupled with a half Wheatstone bridge from the other load cell to form a Wheatstone bridge for measuring WOB and a similar coupling is made to form another Wheatstone bridge for measuring TOB. Tn another embodiment, additional strain gages in another Wheatstone bridge measure differential pressure. The output of the pressure and weight bridges are electrically combined to provide a weight signal unaffected by differential pressure fluctuations. The load cells are force fit in the radial pockets in the drill collar and a cap is installed on each pocket housing a load cell to protect the load cell from drilling fluid.      The strain gages in each load cell are placed to minimize the effects of bending, hydrostatic pressure, temperature, differential pressure and cross talk between WOB and TOB measurements. The load cells can be replaced easily and drill collar gauging is not required. Since the strain gages are not directly attached to the drill collar, the high residual stress in the drill collar does not cause the strain gages to drift.
Patent CA-2130837-C (CA)
Title: Fuel additive compositions containing aliphatic amines and polyalkyl hydroxyaromatics
Inventor: CHERPECK RICHARD E
IPC: C10L1/22
Filed: 1993-12-20
Granted: 2004-02-24
Abstract: A fuel additive composition comprising:   (a) A fuel-soluble aliphatic amine selected from the group consisting of (1) a straight or branched chain hydrocarbyl-substituted amine, (2) a hydroxyalkyl substituted amine, and (3) a straight or branched chain hydrocarbyl-substituted succinimide; and (b) a polyalkyl hydroxyaromatic compound or salt thereof wherein the polyalkyl group has sufficient molecular weight and carbon chain length to render the polyalkyl hydroxyaromatic compound soluble in hydrocarbons boiling in the gasoline or diesel range.
Patent CA-2137211-C (CA)
Title: Method and apparatus for preventing posterior capsular opacification
Inventor: BRETTON RANDOLPH H
IPC: A61B17/00
Filed: 1994-12-02
Granted: 2005-01-04
Abstract: A method and apparatus for destroying residual lens epithelial cells within a lens capsule of an eye.      The apparatus includes a probe configured for insertion, into the eye such that the probe is disposed either in the lens capsule or between the iris and the lens capsule. The probe is further configured to deliver energy therefrom to residual lens epithelial cells within the lens capsule in order to destroy them. The method includes the steps of inserting a probe constructed in accordance with the apparatus of present invention into the eye such that a distal end portion of the probe is disposed either within the lens capsule or between the iris and the lens capsule, delivering energy to the probe such that residual lens epithelial cells within the lens capsule are destroyed, ceasing the delivery of energy to the probe, and removing the probe from the eye.
Patent CA-2139564-C (CA)
Inventor: ANDERSEN ERIK
IPC: A61F2/04
Filed: 1993-07-12
Granted: 2004-10-05
Abstract: A tubular prosthesis (10) including a tubular wall portion (12) of loosely interlocked pattern, e.g. of knitted loops, constructed to function within a body lumen. The loops are preferably formed of co-knitted strand materials. A first strand material (16) is a metal strand that structurally defines the tubular shape of the prosthesis and maintains the shape when positioned in the lumen. A second strand material (18) is a predetermined substance selected to provide desired characteristics to the wall of the prosthesis.
Patent CA-2143404-C (CA)
Title: Process for removal of heteroatoms under reducing conditions in supercritical water
Inventor: SISKIN MICHAEL
IPC: C07C1/00
Filed: 1995-02-24
Granted: 1999-05-04
Abstract: A process  for heteroatom  removal-enhancing hydrogenation  of highly refractory aromatic ring structures that involves contacting  a highly  refractory  structure  having   at  least  one  aryl   linkage connecting a first heteroaryl  moiety and a  moiety selected from  the group consisting of an aryl moiety and a second heteroaryl moiety with supercritical water having a temperature of from about 400°C to  about 600°C in the presence of from about 3.4 MPa to about 18.6 MPa of CO to produce lower molecular weight products having decreased aromatic  and heteroatom content.   The  process  has  utility  for  producing  more valuable lower  molecular weight  products having  a reduced  aromatic heteroatom content from starting materials that are highly  refractory and widely considered  to be difficult  to upgrade such  as coals  and asphaltenes, and model compounds containing the biaryl linkages.
Patent CA-2144035-C (CA)
Inventor: MACDOUGALL BARRY R
IPC: C02F1/461
Filed: 1995-03-03
Granted: 2003-01-07
Abstract: A process is described for electrochemically "collecting" certain organic  compounds  from  aqueous  solutions  in  an immobilized and concentrated manner conducive to subsequent destruction.  The method is applicable for organic compounds amenable to electrochemical coupling, e.g. by condensation. The method  involves the electrochemical reaction of the organic  compounds  to  form  substantially water  insoluble coupling products in the form of deposits or films on the working electrode surface.  This method has the advantage of greatly concentrating and immobilizing the organic compounds on the surface of the working electrode.  The immobilization of the organics allows the material to be transferred to a different environment or allows the environment to be changed to facilitate destruction of the organics.  This advantage, along with the high "local" concentration of the organic material on the electrode's surface, allows various methods of post treatment or destruction to be carried out, which would not be possible or would not be as efficient if carried out directly on the initial dilute waste water.
Patent CA-2145870-C (CA)
Inventor: SCHAFER CLAUS
IPC: C08J7/02
Filed: 1994-07-22
Granted: 2004-08-31
Abstract: L'invention concerne un procédé de traitement de surfaces de pièces contenant des polymères et une solution aqueuse inaltérable par le vieillissement. Selon ce procédé, on utilise une solution qui contient, outre des agents de gonflement, des agents alcalinisants et des sels basiques, au moins un agent solubilisant supplémentaire pour l'agent gonflant contenu dans la solution, sélectionné dans le groupe des composés organiques répondant à la formule générale: HO-A(OH)-R, dans laquelle A désigne une chaîne alkylène ramifiée ou non, R désigne un groupe alkyle ramifié ou non ou bien hydrogène, et A et R contiennent ensemble au moins trois atomes de carbone. Ce procédé et cette solution de gonflement peuvent être utilisés pour la métallisation de polymères.
Patent CA-2146096-C (CA)
Inventor: ANDREAE PETER ROBERT
IPC: F04B49/02
Filed: 1995-03-31
Granted: 2002-01-22
Abstract: A controller for controlling the pumping unit for an oil well comprises a housing having a first and a second tip for placement in a flow of oil between the wellbore to holding tanks; means for generating a substantially constant power; a constant power heater in the first tip connected to the means for generating, for radiating a substantially constant heat; means for determining the temperature at each the first and second tips and for generating a digital signal indicative of the temperature of the first and second tips; supervising means for controlling the means for determining, processing the digital signal for determining a rolling average signal, and generating a control signal therefrom which is independent of ambient temperature of the oil flow; and means for switching the pumping unit on or off,according to the control signal. The controller furt her comprises means for calibrating the means for determining. The constant power heater is preferably a FET connected in series with a resistor. The invention also provides a optimizing method for controlling a pumping unit of an oil well.
Patent CA-2158514-C (CA)
Inventor: LIMA PAULO CESAR RIBEIRO
IPC: F04F1/08
Filed: 1995-09-18
Granted: 2000-11-14
Abstract: Two production springs extend downwardly from a well head of an oil well to a point adjacent a producing region. Lower ends of the two production strings are connected by a coupling which allows a mechanical interface launched adjacent the well head of one of the production strings to descend along the production string through the coupling and upwardly through the other production string to displace oil from the production strings to a surge tank. High pressure gas is utilized to move the mechanical interface through the production strings and suitable valves are provided for controlling the flow of gas and oil through the production strings.
Patent CA-2160030-C (CA)
Inventor: WESTON MARTIN
IPC: H04N5/44
Filed: 1995-03-01
Granted: 2005-08-09
Abstract: On décrit un procédé de conversion de projection où chaque ligne de trame de sortie est interpolée à partir d'au moins trois lignes de trames d'entrée provenant chacune d'au moins trois trames d'entrée. On peut obtenir une nette amélioration de qualité d'image en multipliant la fréquence de trame par 1,5 (au lieu de pratiquer un simple doublement de trame) et en multipliant la fréquence de ligne par 1,5 (au lieu d'en pratiquer le simple doublement), tout en maintenant les débits de données dans des limites maîtrisables.
Patent CA-2162205-C (CA)
Inventor: RANDEN DAVID J
IPC: G07D9/02
Filed: 1995-11-06
Granted: 1999-03-16
Abstract: The present invention provides an insert to fit into a paper money slot of a cash drawer to convert that slot into a coin-receiving/dispensing area. The insert comprises upper and lower sections. The upper section comprises a coin-receiving depression circumscribed by a flat, upper surface. The lower section comprises a flat base to rest on the slot bottom when the tray is in position in the slot. Cooperating sleeve and post means are provided on facing surfaces on the upper and lower sections. The sleeves adjustably receive corresponding posts in frictional engagement so as to maintain the upper section at an adjustable height relative to the lower section.
Patent CA-2165288-C (CA)
Title: Disposable training pants having a non-perforated tear line through elastic
Inventor: BRIDGES RUSSELL PEARCE
IPC: A61F13/00
Filed: 1994-06-13
Granted: 1999-09-28
Abstract: Non-perforated tear lines for re-moval and evacuation of contents of dis-posable undergarments such as training pants. Non-perforated tear lines comprise a series of bond sites which are shaped, sized, spaced and arranged to provide a zone of weakness to permit severance of portions as well as elastic leg elas-tic disposed in the waistband, the body of the pant, and the elastic leg bands for complete removal. Bond sites are formed by displacing a portion of material such that a thickened outer edge defines a weakened area of reduced thickness. Thus, elastic in the waistband may be dis-posed continuously 360 degrees around the wearer's waist, and elastic in the leg bands may be disposed continuously 360 degrees around the wearer's legs. In ad-dition, improved pants having elasticized ear flaps in the body of the pants can be conveniently removed from the wearer. The shape, size, spacing and arrangement of the individual bond sites is determined for each material used in order to permit severance of the particular material while preventing premature removal. Because the tear lines of this invention are capa-ble of separating elastic, location of the tear lines is not limited to side seams, but may be placed on the front of the pants for convenience.
Patent CA-2170164-C (CA)
Inventor: KEAL MARK ANTHONY
IPC: E01H1/08
Filed: 1994-09-01
Granted: 2003-12-09
Abstract: An apparatus (5) for renovat- ing synthetic grass playing surfaces (1) which include a layer of partic- ulate material. The apparatus (5) comprises a plenum chamber (20) which directs a fast moving jet of air against the particulate so as to dislodge it and direct the particu- late into a collection chamber (40). The plenum chamber (20) may be adapted to effect a reciprocating mo- tion parallel to a playing surface (1) and orthogonal to a direction of con- veyance of the apparatus (5) over the playing surface (1). The col- lection chamber (20) may incorpo- rate a screw conveyor system (44) to displace particulate material directed into the collection chamber (20) to an appropriate container which may be conveyed along side the appara- tus (5) by a separate vehicle. The apparatus (5) may further include a particulate dispensing apparatus for applying an evenly spread layer of fresh particulate material in place of that which has been dislodged and removed from the playing surface (1).
Patent CA-2174346-C (CA)
Title: Sour gas membrane treatment process including dehydration
Inventor: LOKHANDWALA KAAEID A
IPC: B01D53/22
Filed: 1994-10-21
Granted: 2005-12-06
Abstract: Improved membranes and improved membrane processes for treating gas streams containing hydrogen sulfide and methane, plus water vapor, carbon dioxide or both. The processes rely on th availability of two membranes of two membranes types, one of which has a high hydrogen sulfide/methane selectivity and a high water vapour/methane selectivity, when measured with multicomponent gas mixtures at high pressures. Based on the different permeation properties of the two membrane types, optimized separation processes can be designed. In favorable cases, the processes can simultaneously dehydrate the gas stream and remove the hydrogen sulfide to very low levels.
Patent CA-2177714-C (CA)
Title: Multilayered optical film
Inventor: OUDERKIRK ANDREW J
IPC: B32B7/023
Filed: 1994-12-20
Granted: 2005-08-09
Abstract: The present invention includes a multilayered polymer film (10) comprising a body of a plurality of alternating layers (12) of a crystalline naphthalene dicarboxylic acid polyester and another selected pol ymer (14) wherein the layers have a thickness of less th an 0.5 micrometer and wherein the crystalline naphthalene dicarboxylic acid polyest er layer has a higher index of refraction associated whi th at least one in-plane axis adjoining layers of the selected polymer.
Patent CA-2183002-C (CA)
Title: Dispositif pour soutenir la tete d'une personne, et methode pour fabriquer ce dispositif
Inventor: MESSIER-LAGARDE ANGELE
IPC: A47G9/02
Filed: 1996-09-10
Granted: 1999-01-12
Abstract: Un dispositif pour soutenir la tête d'une personne tout en permettant de minimiser la friction entre ses cheveux et le dispositif, comprenant au moins deux pièces de tissu assemblées ensemble de manière à permettre un glissement de type satiné de l'une par rapport à l'autre. Une troisième pièce de tissu possédant les mêmes propriétés de glissement peut être ajoutée pour recevoir la tête de la personne, et une quatrième pièce de tissu peut être cousue a l'assemblage sur trois de ses côtés pour former une taie d'oreiller.
Patent CA-2186919-C (CA)
Inventor: SINGH AMARJIT
IPC: A61P25/04
Filed: 1996-10-01
Granted: 2001-05-01
Abstract: The present  invention  is  directed to a pharmaceutical composition  for  topical  use  comprising  0.1  to  10% w/w of nimesulide and 90 to 99.9% w/w of a percutaneous absorption enhancing vehicle base.   The pharmaceutical  composition  is suitable for use as a therapeutic anti-inflammatory and analgesic composition.