baber/WOPTO huggingface dataset:
Patent CA-2172081-C (CA)
Inventor: BOYD JOHN WESLEY
IPC: E21B33/134
Filed: 1996-03-19
Granted: 2002-02-12
Abstract: A plug and process for use in well abandonment is taught. The plug includes a retaining structure, such as a cement plug, which is placed in the well borehole and an amount of a viscous substance, such as sand and fines in bitumen, above the retaining structure. The viscous substance prevents the passage of fluids vertically through the well borehole. The plug remains viscous over time and can flow to fill void which may open up in the well adjacent the plug. To enhance the sealing characteristics of the plug, the process for placement of the plug includes the removal of a section of the well casing and possibly also the sheath and a layer of the borehole wall behind the removed section of the casing at the position of the plug to prevent the flow of fluids around the plug.
Patent CA-2174214-C (CA)
Title: Multimedia enabled network
Inventor: HOESS RUDIE JOSEPH
IPC: H04L12/28
Filed: 1994-10-14
Granted: 2004-06-22
Abstract: A network which is suitable for the distribution of signals such as video and audio is disclosed. A second network (30) is overlaid on an existing LAN (20) toprovide audio and video functionality, without further loading the capacity of the LAN. Switching of the video and audio signals is provided by a switchbox (31), controllable from the LAN via server (50). The second network may be a simple UTP arrangement.
Patent CA-2180223-C (CA)
Inventor: KAWASAKI MASAAKI
IPC: A61J1/03
Filed: 1996-06-28
Granted: 2008-09-23
Abstract: An olefin thermoplastic elastomer compositions of the invention is in a non-crosslinked or crosslinked form and comprises a crystalline polyolefin resin (A) and an ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber (B), and optionally a softer (C) and/or an inorganic filler (D), in a specific ratio. The copolymer rubber (B) is prepared by the use of a metallocene catalyst and comprises ethylene, an .alpha.-olefin of 3 to 20 carbon atoms and a nonconjugated polyene. This composition can provide molded products of more excellent tensile strength, elongation at break, elastomeric properties (elongation set, permanent compression set, etc.), heat resistance and low-temperature properties than the conventional non-crosslinked olefin thermoplastic elastomers, even if the composition is in the non-crosslinked form. The composition in the partially or completely crosslinked form can provide molded products of more excellent low-temperature properties, tensile strength, elongation at break and elastomeric properties than the conventional vulcanized rubbers. The other olefin thermoplastic elastomer compositions comprises a crystalline polyolefin resin (E) and an ethylene/.alpha.-olefin copolymer rubber (F), and optionally an olefin rubber(G) and/or a softener (H), in a specific ratio, and is partially or completely crosslinked. The copolymer rubber (F) is obtained by random copolymerizing ethylene and an .alpha.-olefin of 3 to 20 carbon atoms in the presence of a metallocene catalyst and has (1) a specific molar ratio ((a)/(b)) of units derived from ethylene (a) to units derived from the .alpha.-olefin of 3 to 20 carbon atoms (b), (2) a specific density, (3) a specific melt flow rate and (4) a specific intrinsic viscosity (.eta.). This thermoplastic elastomer composition can provide molded products of more excellent tensile properties such as tensile strength and elongation at break than the conventional vulcanized rubbers.
Patent CA-2184265-C (CA)
Inventor: JOHANSSON INGEMAR SVEN
IPC: B25D17/04
Filed: 1995-02-28
Granted: 2005-11-15
Abstract: A pneumatic impact breaker which comprises a housing (11) with a rear cylind er head (12), one or two handles (18, 19) and a longitudinal cylinder bore (20), a hammer piston (28) reciprocably guided in the cylinder bore (20), a front portion (55) of the hou sing (11) including socket means (13, 17) for receiving the rear impact receiving end (15) of a working implement (16), an air distributing va lve (26, 27) located in the rear part of the cylinder bore (20) and arranged to direct motive pressure air alternatingly to the opposite ends of the hammer piston (28) to make the latter reciprocate in the cylinder bore ( 20), and the rear cylinder head (12) comprises a plug ex tending into the rear end of the cylinder bore (20) and forming an axial support for the air distributing valve (26, 27), whereby two parall el wall portions (29, 30) extend rearwardly from the housing (11) and which together with a transverse wedge bolt (32) form a mounting means for said cylinder head (12) and said handles (18, 19).
Patent CA-2186034-C (CA)
Title: Highly efficient production and isolation of viral particles
Inventor: HRINDA MICHAEL E
IPC: C12N5/02
Filed: 1995-03-22
Granted: 2002-11-26
Abstract: This invention is directed to a continuous process for producing viral particles comprising providing in a perfused growth medium a population of viable virally infected non-lytic cells, and removing medium containing said cells at a rate to maintain the steady-state log-phase growth of cells remaining in said perfused growth medium. The invention is also directed to a process for purifying retroviral particles comprising passing a solution comprising the retroviral particles and contaminants through an anion exchange resin, and eluting the retroviral particles from the resin.
Patent CA-2190505-C (CA)
Inventor: HEINRICH GUNTER
IPC: A01C1/06
Filed: 1995-05-08
Granted: 2004-09-28
Abstract: -19- Gel formulations which comprise - at least one active compound suitable for dressing seed, - at least one gel-forming agent, - water and - additives are particularly suitable for dressing seed.
Patent CA-2191547-C (CA)
Inventor: DI GIAMMARINO SILVIO
IPC: A47L13/24
Filed: 1996-11-28
Granted: 2001-04-03
Abstract: A mop head retainer for a mop head, having a shank for connection to a mop handle, an elongated body secured at its middle to the shank, and a jaw cooperable and pivotal with respect to the body to releasably grip and retain the mop head between the jaw and the body and release it therefrom, wherein the elongated body is provided with opposite, spaced first and second terminal extensions downwardly extending from the ends of the body, one end of the jaw being pivotably secured to the lower free end of the first extension, the other free end of the jaw and the inside surface of the lower end of the second extension being provided with co-operating engagement means releasable upon spacing apart of the lower end of the second extension and the free end of the jaw in a direction generally normal to the direction of rotation of the latter at its closed position, so that when in engaged position the jaw and the body are secured in spaced parallel orientation; the second terminal extension also extending upwardly from the corresponding end of the body and being pivotably associated between its ends with the body for outward movement of the lower free end of the second terminal extension away from the jaw; the retaining means being further provided with an elongated semi-rigid release member, one end of the member is attached to the shank at a point spaced from the body, the other end of the member is attached to the upper end of the second terminal extension, whereby downward pressure on a part of the release member between its ends causes deflection of the release member to pivot the second terminal extension and consequently move the lower end of the terminal extension away from the jaw to release the engagement means when in a closed position and permit the jaw to open, and removal of the downward pressure causes the release member and the second terminal extension to return to original positions to permit re-engagement of the engagement means when the jaw is to be closed; a protective member secured to the shank and extending towards the upper end of the second terminal extension, the release member being positioned between the protective member and the body, whereby the release member is shielded against unintentional disengagement of the engagement means by unintentional deflection of the unintentional deflection of the release member during use of the mop; the improvement comprising the protective member is provided with a pressure member having an abutable portion downwardly extending towards and adjacent the release member and operably abutable with the release member to effect the downward pressure on the part of the release member to effect the release of said engagement means. The pressure member allows for easier and cleaner manipulation of the retainer when replacement of the mop head is carried out.
Patent CA-2194637-C (CA)
Inventor: TOLEDO GEORGE F
IPC: E05F3/10
Filed: 1997-01-08
Granted: 1999-08-24
Abstract: A door closer having a spindle and cam arrangement for driving a cam plate longitudinally within a housing filled with oil, and dual rods connected to the cam plate at one end and to two pistons respectively at an opposite end. The pistons are reciprocal within cylinders having speed valves in flow communication to opposite sides of the pistons. Dual springs are arranged, one around each rod and compressed between the pistons and a fixed compression plate within the housing. A single adjusting screw extends from a front end of the housing to a threaded central aperture of the compression plate. Rotation of the adjusting screw sets the initial spring compression force of the return springs which influences the rate of closure of the door and the preload force of the door to the door frame.
Patent CA-2206186-C (CA)
Title: Withdrawing and processing thermoformed objects from a thermoforming machine
Inventor: PADOVANI PIETRO
IPC: B29C51/44
Filed: 1997-05-27
Granted: 2007-04-24
Abstract: Apparatus and a method for extracting thermoformed objects from a thermoforming machine and processing them. One or a sequence of units or treatment or work stations for thermoformed objects produced in the thermoforming machine are arranged in sequence immediately downstream of the thermoforming machine, and at least one extractor plate is designed to move synchronously with the thermoforming machine, between a withdrawal position in which a set of thermoformed objects are removed from the thermoforming machine and at least one processing station for processing or handling the set of objects removed, and to keep the latter secured to it during the corresponding processing or handling.
Patent CA-2206599-C (CA)
Title: Method and device for separating fibrin i from blood plasma
Inventor: EDWARDSON PETER ANDREW DAVID
IPC: A61M1/02
Filed: 1995-12-01
Granted: 2007-11-06
Abstract: A device for separating components such as fibrin monomer from blood by centrifugation about a central axis comprising a first annular chamber (70) defined by an outer cylindrical wall (72) and an inner cylindrical wall (71) both walls being concentrically accommodated about an axis of rotation, and by a top wall (73) and a bottom wall (74), where the bottom wall is formed by a piston (55) displaceable within the first chamber. The device including a second chamber (75) below the first chamber and communicating with the first chamber through a first conduit (4) and being defined by said outer cylindrical wall (72), the bottom wall (74) of the first chamber, and another bottom wall (76). The device also includes a capsule (45) accommodated in the second chamber and including a plurality of compartments for receiving respective compositions promoting the separation.
Patent CA-2210289-C (CA)
Inventor: MILLS SUE ANN
IPC: A61F13/514
Filed: 1996-01-05
Granted: 2001-05-01
Abstract: L'invention décrit des articles absorbants tels que serviettes hygiéniques, des protège-slips, des dispositifs pour l'incontinence adulte et autres, dotés de rabats latéraux. Lesdits articles absorbants dotés de rabats latéraux sont munis de parties froncées qui peuvent se déployer pour réduire les tensions exercées sur les rabats lorsque ceux-ci sont enroulés autour des bords latéraux courbes du sous-vêtement d'un usager. L'invention décrit également une feuille d'emballage amovible recouvrant les attaches adhésives sur le côté dudit article absorbant qui est en contact avec le vêtement, laquelle fournit un emballage individuel pour la serviette hygiénique.
Patent CA-2213643-C (CA)
Title: Dispositif de raccordement de cable par epissure
Inventor: BEVIS ARTHUR
IPC: H01R11/01
Filed: 1996-02-23
Granted: 2001-07-31
Abstract: L'invention porte sur un dispositif de connexion servant à connecter des conducteurs de câbles à hautre tension durant des opérations d'épissure entre câbles. Chaque connecteur comporte des cosses munies de portions de ferrures serties sur les extrémités des conducteurs à raccorder et des segments de cosse partiellement cylindriques, boulonnés ensemble à travers une masse de remplissage ou des plaques de raccordement afin de constituer un raccord aux contours adoucis, ne comportant ni rebords ni aspérités susceptibles de provoquer des concentrations de contraintes électriques. Les plaques de raccordement permettent de joindre deux raccords en parallèle de manière à obtenir des raccords en dérivation: un adaptateur de cosse aux contours adoucis ne remplace une quatrième cosse que dans le cas où l'on doit constituer un seul raccord en dérivation. Des couvercles d'écrous et de boulons à tête aux contours adoucis et évidés contribuent à la constitution d'un contour extérieur adouci du raccord.
Patent CA-2215310-C (CA)
Inventor: TSIEN ROGER Y
IPC: C12Q1/68
Filed: 1996-03-20
Granted: 2002-05-21
Abstract: Cette invention concerne des substrats pour  beta -lactamase représentés par la formule générale (I) dans laquelle si X est une fraction de donneur fluorescent, Y est un extincteur de luminescence (qui peut ou non ré-émettre) ou vice versa, R' appartient au groupe constitué de H, d'un alkyle inférieur (c'est-à-dire alkyle comportant de 1 à 5 atomes de carbone) et de (CH2)nOH, où n est 0 ou un entier compris entre 1 et 5, R'' appartient au groupe constitué de H, de cations métalliques et ammonium physiologiquement acceptables, de -CHR<2>OCO(CH2)nCH3, - CHR<2>OCOC(CH3)3, acylthiométhyle, acyloxy-alphabenzyle, delta-butyrolactonyle, méthoxycarbonyloxyméthyle, phényle, méthylsulphinylméthyle, béta-morpholinoéthyle, dialkylaminoéthyle, acyloxyalkyle, dialkylaminocarbonyloxyméthyle et d'un composé aliphatique, où R<2> est sélectionné dans groupe constitué de H et d'un alkyle inférieur, A est sélectionné dans le groupe constitué de S, O, SO, SO2 et CH2, et Z' et Z'' sont des agents de liaison pour les fractions de donneur fluorescent et d'extincteur de luminescence. L'invention concerne également des procédés de dosage de l'activité de la  beta -lactamase et de régulation de l'expression dans des systèmes utilisant la  beta -lactamase comme gène marqueur.
Patent CA-2217226-C (CA)
Inventor: CHEN CHIH-MING
IPC: A61K9/50
Filed: 1996-03-13
Granted: 2006-05-30
Abstract: La présente invention décrit une pastille pharmaceutique à libération lente, comprenant les éléments suivants: (a) un noyau comprimé contenant: i) un médicament; ii) de 5 à 20 % en poids d'un agent osmotique soluble dans l'eau, ce pourcentage étant basé sur le poids total du noyau comprimé; iii) un liant polymère pharmaceutiquement acceptable et soluble dans l'eau; iv) un excipient pharmaceutique classique; et (b) un revêtement constitué d'une membrane à double épaisseur autour du noyau, ce revêtement se composant essentiellement des éléments suivants: i) une première couche de revêtement intérieure permettant de libérer en continu le médicament, ladite couche se composant essentiellement d'un polymère pharmaceutiquement acceptable, plastifié et insoluble dans l'eau et d'un polymère pharmaceutiquement acceptable et soluble dans l'eau; et ii) une deuxième couche de revêtement extérieure permettant de libérer immédiatement le médicament, ladite couche se composant essentiellement d'une quantité efficace d'un médicament et d'un polymère soluble dans l'eau. Cette formulation à libération lente convient à tout médicament devant être administré une fois par jour.
Patent CA-2225172-C (CA)
Title: Synthesis of n-acyl-n-alkylcarboxylates
Inventor: MILLER LARRY EUGENE
IPC: C07C233/47
Filed: 1996-05-29
Granted: 2002-04-30
Abstract: Chemical synthesis of N-acyl-N-alkylcarboxylates through oxidation of substituted amides formed from carboxylic acid esters and an N-alkyl-N-alkanolamine.
Patent CA-2228269-C (CA)
Inventor: NATSOULIS GEORGES
IPC: C12N15/864
Filed: 1996-08-01
Granted: 2008-01-08
Abstract: La présente invention concerne des molécules nouvelles d'acide nucléique, qui possèdent des régions codant le virus adéno-associé (AAV), qui sont capables d'exprimer des fonctions AAV nécessaires pour compléter un vecteur AAV dans la production de virions d'AAV recombinant (rAAV). Les molécules présentent une séquence de nucléotides qui est sensiblement homologue d'une région promotrice p5 d'AAV, cette région étant située, dans les molécules, dans un site qui est différent de sa position naturelle par rapport à la région de codage rep dans le génome d'AAV de phénotype sauvage. L'invention concerne aussi des produits de recombinaison à fonctions d'auxiliaires d'AAV; ils comprennent les molécules d'acide nucléique décrites incorporées à un réplicon qui est capable d'être transcrit et traduit pour exprimer des fonctions complémentaires d'auxiliaires d'AAV dans une cellule hôte appropriée. L'invention concerne également des cellules nouvelles d'encapsidation et des cellules nouvelles de production d'AAV, cellules qui contiennent les produits de recombinaison à fonctions d'auxiliaires d'AAV selon l'invention, ainsi que des procédés de production de niveaux accrus de virions de rAAV grâce à l'utilisation des produits de recombinaison selon l'invention. L'invention concerne enfin des procédés de production de virions de rAAV sans production concomitante de niveaux importants d'AAV de la phénotype sauvage.
Patent CA-2228817-C (CA)
Inventor: SHLOZNIKOV BORIS
IPC: A61H39/00
Filed: 1998-02-05
Granted: 2005-05-24
Abstract: Disclosed is a device for delivering acupuncture therapy to an acupuncture meridian region of a patient. The device generates a signal having at least one signal component at a given frequency, and is operable over a number of successive time periods to change the given frequency for each of the time periods, the time periods being sufficiently short to at least partially offset brain-induced habituation effects in the patient. The device is thus able to delivering the signal to the acupuncture meridian region.
Patent CA-2231876-C (CA)
Title: Biaxial stretching of plastic tubes
Inventor: CHAPMAN PETER GLANVILLE
IPC: B29C48/90
Filed: 1996-09-13
Granted: 2006-10-10
Abstract: A continuous process and apparatus for producing oriented plastic tube comprising the steps of extrusion (12), temperature conditioning (18), diametrical expansion (zone 20) and cooling (30), characterised in the step of inducing axial draw of the tube between first (16) and second (25, 36) haul-off means located upstream of said expansion step (zone 20).
Patent CA-2232075-C (CA)
Inventor: HUEY CHRISTOPHER A
IPC: G06Q20/32
Filed: 1998-03-13
Granted: 2007-01-09
Abstract: Telephone users desiring directory assistance services are connected via standard telephone procedures to a directory assistance provider, such as an operator. An operator provides the destination number and initiates a connection to that number. Once that connection is initiated, the connection is monitored for the occurrence of a predetermined condition, such as a busy signal. If no such condition is detected, the caller proceeds with the call in the normal manner. If, however, such a condition is detected, the caller is automatically transferred to a directory assistance provider for further help.
Patent CA-2239855-C (CA)
Inventor: MILLER WILLIAM J
IPC: D21C9/147
Filed: 1996-11-18
Granted: 2002-07-02
Abstract: An improved process is described for oxygen delignification of medium consistency pulp slurry which teaches control parameters and their resultant effect on final product characteristics. Specifically, a process is described wherein pulp slurries of from approximately eight percent to sixteen percent consistency, are heated to a temperature of at least 170 ~F and impregnated with oxygen gas and alkali to bring the slurry to a pH of from approximately 11-12.5. The slurry is mixed in a high shear mixer, for agitating mixing therein, under pressure of from approximately 20-180 psig for a first reaction time of typically 5 minutes. Additional alkali is added to the slurry to return the pH to at least 11, preferably at least 12, and the residual alkali concentration to at least 4.0 gpl at the end of the first reaction time. The temperature of the slurry is raised to at least 170 ~F followed by mixing for a second reaction time of typically 55 additional minutes.
Patent CA-2242726-C (CA)
Inventor: MICHAUD PASCAL
IPC: C11D7/30
Filed: 1998-07-29
Granted: 2007-01-09
Abstract: Pour remplacer le 1,1,2-trichloro-1,2,2-trifluoroéthane et le 1,1-dichloro- 1- fluoroéthane dans les compositions de traitement de surfaces solides (notamment défluxage), l'invention propose d'utiliser un mélange quasi azéotropique contenant, en poids, 75 à 95 % du 1,1,1,3,3-pentafluorobutane, 1 à 15 % de chlorure de méthy- lène et 1 à 10 % de méthanol.
Patent CA-2247687-C (CA)
Title: Coherent optical communication system
Inventor: FRIGO NICHOLAS J
IPC: H04B10/272
Filed: 1998-09-21
Granted: 2003-04-15
Abstract: A coherent optical system includes an optical coupler or combiner for combining a received upstream optical signal and an optical local oscillator signal. The coherent optical system further includes a coherent optical receiver which is configured to receive and process the combined optical signal from the optical coupler to retrieve upstream information from the upstream optical signal. In certain embodiments, the coherent optical communication system includes a central office having an optical source for generating a composite downstream optical signal made up of downstream optical signals of particular wavelengths (or sets of wavelengths). A downstream optical signal having a particular wavelength (or set of wavelengths) is routed to a downstream destination with a portion of the downstream optical signal (after modulation with upstream information) being returned to the central office as an upstream optical signal of the particular wavelength (or set of wavelengths) which is part of a composite upstream optical signal. At the central office, the optical coupler or combiner combines the received upstream optical signal and the optical local oscillator signal, and the coherent optical receiver processes the combined optical signal. The optical source for generating the local oscillator signal. Thus, the coherent optical system can alleviate the problems and costs associated with generating the local oscillator signal because the same or s a similar source is readily available. Using the same or similar optical source to generate the downstream optical signals and the local oscillator system permits an increase in capacity without the additional cost of wavelength-registered and stabilized optical sources at the subscriber locations.