baber/WOPTO huggingface dataset:
Patent CA-2286071-A1 (CA)
Title: Epsilon caprolactam compositions and byproducts
Inventor: OLSON KURT DAMAR
IPC: C07C45/50
Filed: 1998-04-14
Abstract: This invention relates to a composition commprising (a) epsilon caprolactam and (b) one or more of 5-¢4,5-di(3-carboxypropyl)-2-pyridyl!pentanoic acid or salt or amide, 4-¢4,5-di(2-carboxypropyl)-2-pyridyl!-2-methylbutanoic acid or salt or amide, 2-¢2-(2-carboxybutyl)-5-(1-carboxypropyl)-4-pyridyl!butanoic acid or salt or amide, 5-¢3,5-di(3-carboxypropyl)-2-pyridyl!pentanoic acid or salt or amide, 4-¢3,5-di(2-carboxypropyl)-2-pyridyl!-2-methylbutanoic acid or salt or amide, 2-¢2-(2-carboxybutyl)-5-(1-carboxypropyl)-3-pyridyl!butanoic acid or salt or amide, 5-amino-4-methylpentanamide, 4-amino-3-ethylbutanamide, 5-¢4,5-di(4-hydroxybutyl)-2-pyridyl!pentanol, 4-¢4,5-di(2-methoxypropyl)-2-pyridyl!-2-methylbutanol, 2-¢2-(2-methoxybutyl)-5-(1-methoxypropyl)-4-pyridyl!butanol, 5-¢3,5-di(4-hydroxybutyl)-2-pyridyl!pentanol, 4-¢3,5-di(2-methoxypropyl)-2-pyridyl!-2-methylbutanol, 2¢2-(2-methoxybutyl)-5-(1-methoxypropyl)-3-pyridyl!butanol, 5-amino-4-methyl-1-pentanol, 5-imino-2-methyl-1-pentanamine, 5-amino-2-methyl-1-pentanol, 5-imino-4-methyl-1-pentanamine and 2-butyl-4,5-dipropylpyridine, wherein the weight ratio of component a) to component b) is at least about 99 to 1. The epsilon caprolactam compositions are useful in the preparation of nylon 6.
Patent CA-2288708-A1 (CA)
Title: Flow enhancer for petroleum middle distillates
Inventor: SCHORNICK GUNNAR
IPC: C10L1/22
Filed: 1998-05-07
Abstract: The invention relates to a copolymer from the monomers of constituents A to C  as indicated below and optionally D, the total weight of which amounts to 100 mol %: a) 20 to 80 mol % of at least one ethylenically unsaturated dicarboxylic acid or an anhydride, ester and/or amide thereof as constituent A; b) 1 to 79 mol % of at least one diketene of general formula (I), wherein R1 and R2 independently means hydrogen or C1-30-alkyl as constituent B; c) 1 to 79 mol % of at least one vinyl ester, (meth)acrylic acid alkyl ester, (meth)acrylnitrile or mixtures thereof as constituent C and d) 0 to less than 0.5 mol %, or when at least 20 mol % of constituent C is provided, 0 to 20 mol % of at least one other olefinically unsaturated monomer as component D. The inventive copolymer is used as a flow enhancer in petroleum middle distillates.
Patent CA-2288831-A1 (CA)
Title: Modular sensor array, metering device, mounting and connection base
Inventor: REID DREW A
IPC: G01R11/04
Filed: 1999-03-17
Abstract: A modular sensor array has a housing at least one current sensor in the housing responsive to a current in an electrical conductor for developing a corresponding current signal and at least one voltage signal producing circuit in the housing for developing a voltage signal corresponding to a voltage present on an electrical conductor. A connector mounted on housing is configured for engagement with a mating connector of an external measurement device. A circuit delivers the current and voltage signals to the connector. A  metering module has a housing, a metering circuit in the housing for receiving and processing at least one signal corresponding to an electrical quantity, and developing an output signal. First and second mounting structures are provided for mounting the housing to a surface and for mounting a removable metering module.
Patent CA-2295728-A1 (CA)
Title: Fog-resistant packaging film
Inventor: DAVIS MARK G
IPC: C09K3/18
Filed: 1998-06-30
Abstract: A packaging film includes a heat sealable layer coated with one or more antifogging agents disposed in a binder, an antiblocking agent, and no more than about 800 ppm slip agent. The heat sealable layer includes a polymer that includes mer units derived from ethylene while the binder includes a polymer that includes mer units derived from an ester of (meth)acrylic acid and/or vinyl acetate monomers. The antiblocking agent can be in any layer of the film where it provides the desired effect. Such a film, as well as packages made therefrom, can be used to package a variety of products, having particular uility with respect to moist products.
Patent CA-2296006-A1 (CA)
Inventor: LOCKWOOD PHILIP
IPC: G10L19/02
Filed: 1998-07-01
Abstract: The invention concerns a audio encoder whereof the first coding stage (6) includes an coding hub (8) receiving a base audio signal (S0) and generating parameters (QS0) coding the base signal and an error signal (E0). A filter bank (9) breaks down the error signals into sub-bands. A second coding stage includes modules (CE0m) respectively coding the error signal sub-band components (E0m), generating parameters (QE0) coding said components. A multiplexer (5) receives the base signal coding parameters and the error signal sub-band components coding parameters, and forms an binary output flow (.PHI.).
Patent CA-2297508-A1 (CA)
Inventor: THIELEN GEORGES MARCEL VICTOR
IPC: C08K3/36
Filed: 2000-01-31
Abstract: A pneumatic tire having a sidewall rubber insert axially inward of at least one carcass ply. Such insert may, for example, be an apex extending radially outward from the bead core region of the tire into the tire sidewall. Alternatively, it may be positioned higher in the sidewall portion of the tire and away from the bead core. Such insert is a rubber composition containing a dispersion of an ultra high molecular weight polyethylene and a dispersion of a starch composite.
Patent CA-2298003-A1 (CA)
Title: Scripting task-level user interfaces
Inventor: PAAS J JULIAN
IPC: G06F9/445
Filed: 2000-02-04
Abstract: Methods and apparatuses are disclosed for use in network-centric computing for scripting user-interface components together on an as-needed basis for purposes of executing a software application preferably stored on a server. The application may be called from a container/desktop of a client which in turn launches a script.  The script may be stored on a server, on the desktop, or on a removable media, such as an optical or magnetic diskette. The script determines each task to be performed in the application and calls each node associated with the tasks. The script further verifies the policies of the container/desktop with respect to invoking, initializing, and executing the node. Once a task has been performed on the client, the script determines the next node, if any, and may discard the previous node in accordance with the policy framework of the container/desktop. In this way, applications can be performed in a myriad of computing devices, some having little or no memory, by downloading to the client only those user-interface components needed for a particular task to be performed.
Patent CA-2299210-A1 (CA)
Inventor: ALTMANN GABRIEL G
IPC: G01N33/574
Filed: 2000-02-17
Abstract: This invention provides a method for indicating a high or low risk of developing cancer at specific sites along the colon, according to a model of carcinogenesis and measurements of activated enterocytes. The method determines the presence and the intensity of a "promoting environment," a region of intestinal epithelial cells which are biochemically programmed as activated enterocytes to develop cancer in response to certain signals. The model predicts that cancer can develop only in such an environment when the promoting influence is sufficiently intense. If cancer is determined to be present, this method enables one to assess the stage of cancer, which can be used to monitor the effectiveness of therapeutic regimes during the course of treatment for a patient. The method can also be used in the field of cancer research to develop understanding of the etiology of the disease in addition to new treatments for cancer therapy.
Patent CA-2300526-A1 (CA)
Title: Collapsing and take off device for a plastic blown film web produced in the blown film extrusion process
Inventor: KRAUSE ULRICH
IPC: B29C48/10
Filed: 2000-03-14
Abstract: A collapsing and take off device for a plastic blown film web, which is produced by a stationary blown film die in the blown film extrusion process, includes collapsing boards and pinch rolls, which can be pivoted so as to reverse around the axis of the delivered film tube. The collapsed blown film web is guided from the pinch rolls over a stationary deflecting roller, an external deflecting roller and an internal reversing rod to a wind up unit. The reversing rod comprises a perforated pipe, around which the blown film is looped, which is attached to a blower. To take off the blown film web with essentially identical air lubrication by means of the reversing rod, the air flow to the perforated pipe is controlled so that, independently of the area of the reversing rod perforations that is covered by the blown film web, the blowing air issues from the perforations at approximately the same pressure.
Patent CA-2301084-A1 (CA)
Title: Sharpening device
Inventor: EKLUND TORE
IPC: B24B3/36
Filed: 1998-08-18
Abstract: The invention relates to a sharpening device (1) for sharpening cutting edge tools (11) and the like, comprising two sharpening elements (3) arranged, at a distance from each other in the axial direction, for rotation on a shaft (4) extending along a centre axis common to the sharpening elements (3). The sharpening elements (3) have arms (10) extending radially outwards from the shaft (4), said device being characterised in that the sharpening elements are arranged relative to each other in such a way, that their respective arms (10) are inclined towards each other so that they intersect their respective paths of rotation, the arms (10), then, coming from a respective of the two sharpening elements (3), in an alternating way.
Patent CA-2303983-A1 (CA)
Inventor: MILLS ROBERT A R
IPC: E21B47/04
Filed: 2000-04-06
Abstract: The present invention provides a method and apparatus for controlling the production rate of a rotary downhole pump to prevent well pump-off. The method includes the steps of operating the pump at a first speed less than a maximum rate of the pump until well fluid is produced at the wellhead. The operation is continued at the first speed until a first dynamic fluid level in the annulus between the production tubing and the wellbore or the well casing is stabilized. A first static load on the drivehead at the first dynamic fluid level is determined. The pump is then operated at a second speed higher than the first speed until the fluid level in the annulus is stabilized at a second dynamic fluid level. A second static load on the drivehead at the second dynamic fluid level is determined. A linear function of the load on the drivehead is determined as a function of the fluid level in the annulus. The linear function is used to calculate a critical load on the wellhead at a pump off point of the well where the fluid level in the annulus is equal to the insertion depth of the pump. The speed of the pump is reduced when the critical load is reached to prevent pump-off. The method and apparatus of the invention provides for the monitoring and control of the well pumping operation to prevent pump-off without the need for downhole monitoring or measuring equipment.
Patent CA-2306893-A1 (CA)
Inventor: MARTY BERNARD
IPC: A01N31/16
Filed: 1998-10-23
Abstract: L'invention concerne un composé renfermant au moins un support et au moins un principe actif bactéricide, composé dans lequel le principe actif bactéricide est sous forme absorbée dans le support et sous forme libre, ainsi que sa préparation. L'invention concerne également la préparation dudit composé et son utilisation comme agent bactériostatique, ainsi que les compositions absorbantes qui les renferment.
Patent CA-2308518-A1 (CA)
Inventor: CUSTER RICHARD G
IPC: B65D33/25
Filed: 2000-05-12
Abstract: A flexible package includes a recloseable zipper closure along the mouth of the package for selective opening and closing of the mouth. The zipper closure includes first and second closure profiles, which are configured and constructed to selectively interlock. A slider device is configured and constructed to facilitate the mating (closing) and unmating (opening) of the zipper closure. A tamper evident peelable seal is provided between the zipper closure and the interior of the bag to indicate whether or not an attempt has been made to access the interior of the package. The peelable seal can extend between the package walls, one package wall and one closure profile, or between first and second closure profiles.
Patent CA-2313238-A1 (CA)
Title: Granule with hydrated barrier material
Inventor: GAERTNER ALFRED L
IPC: C11D11/00
Filed: 1998-12-21
Abstract: A granule having high stability and low dust is described. The granule includes a hydrated barrier material having moderate or high water activity. Also described are methods of producing the granules.
Patent CA-2315021-A1 (CA)
Inventor: LANGE JEAN-PAUL
IPC: C08C19/02
Filed: 1998-12-18
Abstract: L'invention concerne un procédé d'hydrogénation d'un substrat organique macromoléculaire. Ce procédé consiste à mettre ce substrat organique en contact avec un catalyseur, à une température élevée, et à une pression élevée. Ce catalyseur comprend un métal d'hydrogénation ou un précurseur de ce dernier, sous forme d'une structure mégaporeuse dont les diamètres de mégapores sont supérieurs à 10 microns.
Patent CA-2317646-A1 (CA)
Title: Gas conversion using hydrogen produced from syngas for removing sulfur from gas well hydrocarbon liquid
Inventor: WITTENBRINK ROBERT JAY
IPC: C10L3/06
Filed: 1999-01-22
Abstract: A gas conversion process comprising synthesis gas production, hydrocarbon synthesis and hydrogen production from the synthesis gas, also includes hydrodesulfurizing sulfur-containing hydrocarbon liquids separated from a mixture of natural gas and the liquids produced from a gas well. Hydrogen produced from the synthesis gas is used for the hydrodesulfurization. The hydrogen is produced from the synthesis gas by one or more of (i) physical separation means such as pressure swing adsorption and (ii) chemical means such as a water gas shift reactor. The synthesized hydrocarbons are upgraded by hydroconversion. A portion of the hydrogen produced from the synthesis gas may also be used for at least one of (i) hydrocarbon synthesis catalyst rejuvenation and the hydroconversion.
Patent CA-2318264-A1 (CA)
Inventor: WILK PETER J
IPC: A61F2/94
Filed: 1999-01-12
Abstract: Methodology and related medical devices for effectively bypassing a blocked or partially blocked coronary artery and providing oxygenated blood to the myocardium. A coronary artery bypass method utilizes a shunt member. An upstream end portion of the shunt member is disposed in the myocardium of a patient's heart so that the upstream end portion communicates with the left ventricle of the patient's heart. An opposite or downstream end portion of the shunt member is placed in communication with a coronary artery of the patient downstream of a blockage in the coronary artery. The shunt member extends into the coronary artery from the myocardium either directly or indirectly with an intermediate or middle portion of the shunt member being disposed in an intrapericardial space of the patient, outside of the myocardium and outside of the coronary artery. In a method for performing a myocardial revascularization a passageway is formed at least partially through a myocardium of a patient from an outer surface of the patient's heart, with a surgical operation being performed at an outer end of the passageway to permanently close the passageway at the outer end. The passageway may extend through a posterior wall of a coronary artery and is produced by forming an aperture in an anterior wall of the coronary artery and forming the passageway in substantial alignment with the aperture. The closure of the passageway is effectuated particularly by closing the aperture in the anterior wall of the coronary artery.
Patent CA-2319783-A1 (CA)
Inventor: LITTLE JONATHAN A
IPC: B30B9/30
Filed: 1999-02-03
Abstract: A system and method for determining the fullness of a large capacity waste container (20). Each time the compactor (22) is used to compress the waste in the container a monitoring unit (24) determines the highest hydraulic pressure generated by the compactor during a selected period of compactor use. The monitoring unit also maintains a count of how often the compactor is used. After the container is filled and emptied a number of times, the monitoring unit then divides the highest hydraulic pressures for the uses by the number of uses to obtain a pressure/use value. This pressure/use value is used as a variable to determine a maximum uses value representative of the number of times the compactor can be used before a container is filled. Once a container data representative of how full a container is, and how many compactor uses remain, is calculated by comparing the number of times the container has been used since it was emptied to the maximum uses value. The system can also forecast when, at a time in the future, the container will be filled.
Patent CA-2322539-A1 (CA)
Inventor: LIN HUAI YU
IPC: H02P6/17
Filed: 1999-03-02
Abstract: A motor controller utilizes sensors to detect the rotational speed and relative position of the motor rotor and generates a voltage vector to maintain the motor current in phase with the EMF before a voltage limit is reached. The approximate actual speed is calculated and position signals are generated by the calculator. The actual speed is compared with a command speed signal and any difference gives rise to an error signal. A  proportional integrator receives the error signal and produces a correction signal for a vector rotator corresponding to the desired vertical voltage component necessary to achieve the command speed. After the voltage limit is reached, any further speed increase desired is achieved by rotation of the voltage vector with it's amplitude unchanged.
Patent CA-2322540-A1 (CA)
Title: Process for preparing a protected 4-aminomethyl-pyrrolidin-3-one
Inventor: CHANG JAY HYOK
IPC: C07D207/18
Filed: 1999-03-04
Abstract: A process for preparing a compound of formula (1) in which P1 and P2 are protecting groups; comprising a) reaction of a compound of formula (5) wherein P1 is as defined for formula (1); with a Raney-nickel catalyst in a solvent under hydrogen to produce a compound of formula (6) wherein P1 is as defined for formula (1); b) protecting the amino group to produce a compound of formula (7) wherein P1 and P2 are as defined for formula (1); and c) selective reduction of the double bond to produce the compound of formula (1).
Patent CA-2322907-A1 (CA)
Inventor: LITWIN MICHAEL W
IPC: G02B25/00
Filed: 2000-10-11
Abstract: This invention provides a non-resealable, disposable package for housing a contact lens, the package comprising a magnifying lens. This invention further provides a method of making a non-resealable, disposable package for housing a contact lens comprising the step of molding a portion of said package in a mold form which provides for the formation of an integral magnifying lens when the contact lens package is molded.
Patent CA-2323419-A1 (CA)
Title: Bactericide
Inventor: TAKAHASHI TETSUNARI
IPC: A23L27/30
Filed: 1999-03-11
Abstract: An object of the present invention is to provide a bactericide (and a fungicide) that is highly safe and has strong bactericidal power even when used in low concentration, and that can be used repeatedly in a sterilizing process.     The object can be achieved by the bactericide (or the fungicide) comprising a polar solvent extract of leaves of eucalyptus plants and chitosan. The polar solvent is preferably chosen from the group consisting of lower alcohols and glycols.
Patent CA-2325326-A1 (CA)
Title: System and method for producing amplified signal(s) or version(s) thereof
Inventor: KONSTANTINOU KYRIAKI
IPC: H03F1/32
Filed: 2000-11-09
Abstract: A signal amplification system involves transforming at least one signal to be amplified into at least one transformed signal which is amplified and the resulting amplified transformed signal(s) can be used to produce a version(s) of the at least one original signal. The at least one transformed signal can be produced from the at least one original signal by using the at least one original signal to amplitude and/or angle (phase or frequency) modulate the at least one original signal. After amplification of the at least one transformed signal, the resulting at least one amplified transformed signal is de-modulated to produce a versions) of the at least one signal. In transforming the at least one original signal to produce the at least one transformed signal, the at least one original signal is transformed into a more desirable form, such as a more power efficient form, for amplification. By amplifying the at least one transformed signal, more efficient and/or less costly amplifiers) can be used to amplify the at least one signal in a linear fashion. Depending on the embodiment, at least one signal to be amplified can be transformed into at least one transformed signal by combining offset versions of the at least one original signal to produce the at least one transformed signal having the energy of the at least one signal spread in time and/or to produce the at least one transformed signal having a reduced peak to average power ratio(s)(PAR). Multiple signals to be amplified can be transformed into at least one transformed signal by combining the multiple signals, for example to produce the at least one transformed signal having a reduced peak to average power ratios) (PARs). After the at least one transformed signal is amplified, the resulting signal(s) can be de-modulated, inversely transformed, de-spread or reconstructed to recover a version(s) of the original signal(s).
Patent CA-2332419-A1 (CA)
Title: Pneumatique a armature de sommet triangulee
Inventor: AUXERRE PASCAL
IPC: B60C15/00
Filed: 1999-04-29
Abstract: Pneumatique, de rapport de forme H/S compris entre 0,3 et 0,8, comprenant une armature de carcasse (1), surmontée radialement d'une armature de sommet (3) quasi-cylindrique, ladite armature de carcasse (1) étant, d'une part tangente en T à un cercle C dit d'accrochage, la tangente commune en T audit cercle C et au profil méridien de la carcasse (1) faisant par rapport à une parallèle à l'axe de rotation passant par ledit point de tangence T, un angle .alpha. compris entre + 20~ et - 80~, et d'autre part, dans sa partie comprise entre ledit paint de tangence T et le point E de plus grande largeur axiale, pourvue d'une armature de renforcement (6) d'éléments inextensibles circonférentiellement; vue en section méridienne, la carcasse (1) a un profil, lorsque le pneumatique est monté et gonflé à sa pression recommandée, composé de quatre arcs de cercle: un premier arc de cercle TA de rayon r'1, tangent au cercle d'accrochage C, et présentant un point d'intersection A avec un deuxième arc de cercle AE, de rayon r''1, tangent à la droite D perpendiculaire à l'axe de rotation passant par le point E de plus grande largeur axiale, un troisième arc de cercle EF de rayon r2, tangent au deuxième arc de cercle AE au point E et tangent à un quatrième arc de cercle FG, en un point F, distant de la droite parallèle à l'axe de rotation passant par le centre OJ du cercle C d'une quantité d, les quantités d, r1, r2 satisfaisant aux relations: d=r2+(r1+arJ+eT)cos.alpha. et r1=r2RSS/RSS-r2, alors que r'1 et r''1 sont compris entre les ou égaux aux quantités r1 et/ou 2r1, et un quatrième arc de cercle FG de rayon RTC égal au rayon transversal RT de l'armature de sommet, diminué d'au plus l'épaisseur minimale de l'armature de carcasse.
Patent CA-2335610-A1 (CA)
Title: Novel compounds
Inventor: STANWAY STEVEN JAMES
IPC: C07D491/056
Filed: 1999-06-18
Abstract: This invention relates to novel compounds that can complex with lanthanide cations, processes for their preparation and the use of the resulting lanthanide chelates as biomolecular probes.
Patent CA-2336151-A1 (CA)
Inventor: YOSHINAGA KOUJI
IPC: A61K31/18
Filed: 1999-06-23
Abstract: Remedies for evacuatory insufficiency associating neurogenic bladder which contain as the active ingredient tamsulosin or pharmaceutically acceptable salts thereof.