baber/WOPTO huggingface dataset:
Patent CA-2224090-A1 (CA)
Title: Zirconium and hafnium separation in sulfate solutions using continuous ion exchange chromatography
Inventor: SISSON WARREN
IPC: G01N30/02
Filed: 1998-01-19
Abstract: A method and system for improved continuous ion exchange chromatographic elemental separations of zirconium and hafnium and also for isotopic separations thereof from crude zirconium minerals by using zirconium (also containing hafnium) sulfate feedstock solutions, sulfate eluant solutions, anionic exchange resins, and reduced ion exchange column operating temperatures. The method and system of the invention provides sulfate feedstock solutions by completely converting the carbochlorination products of zircon sand to sulfate solutions prior to feeding to the ion exchange chromatographic column. The method and system of the invention is performed in a continuously operating continuous annular chromatograph (CAC). Nuclear grade substantially purified zirconium and hafnium metals are produced.
Patent CA-2226386-A1 (CA)
Title: Protection of software against use without permit
Inventor: OLESHCHUK VLADIMIR A
IPC: G06F21/12
Filed: 1996-07-10
Abstract: An arrangement to protect software, particularly freely distributed application software, against utilization without permission of the copyright holder. By encrypting the software employing a key (k1) which is different from that key (k2) which is employed in the decryption, better protection is obtained against unauthorized utilization when the decryption key is kept secret to the user. Further improved security is achieved by additionally executing scrambling-descrambling of the communication between the computer in which the software is utilized and the external unit in which the decryption key is stored. Also, the external unit is arranged such that it returns to the host computer, the result from its processing of data received from the host, the result then being utilized in the further execution of the respective program.
Patent CA-2226773-A1 (CA)
Title: Process for coating of paper and board
Inventor: KETTUNEN JYRKI
IPC: D21H19/58
Filed: 1998-01-13
Abstract: The present invention concerns a process and a coating colour for coating a cellulosic web. According to the process an aqueous coating colour is applied on the surface of the web. The invention comprises using a coating colour which contains an aqueous polymer whose viscosity in an aqueous solution increases when the temperature rises.  Preferably, methylcellulose or a corresponding polymer having a gelling temperature of about 5 to 10 °C more than the application tempature of the coating colour is used.  The temperature of the coating is increased after the application of the coating colour in order to achieve gelling of the polymer. As a result, the coating colour rapidly solidifies which decreases the amount of mixture being recycled and it reduces mist-formation in the film press method and improves coverage of coating applied by conventional blade coating.
Patent CA-2230128-A1 (CA)
Title: Decarboxylase d'acide glutamique (dag) modifiee
Inventor: LERNMARK AKE
IPC: C12N9/88
Filed: 1996-09-27
Abstract: La présente invention concerne une DAG modifiée, particulièrement caractérisée par une immunogénicité sensiblement préservée vis-à-vis du diabète, comparée à une DAG non modifiée, et par une activité réduite ou nulle vis-à-vis d'une synthèse de GABA. L'invention concerne aussi un procédé de fabrication d'une DAG modifiée, un procédé d'obtention d'une DAG modifiée, une séquence de nucléotide codant la DAG modifiée, un vecteur contenant la séquence d'acide nucléique, un hôte, une composition pharmaceutique contenant la DAG modifiée et l'emploi de celle-ci pour le traitement et/ou la prévention des affections auto-immunes telles que le diabète insulino-dépendant.
Patent CA-2230317-A1 (CA)
Title: Low temperature hydrogen combustion turbine
Inventor: JERICHA HERBERT
IPC: F02C3/22
Filed: 1998-02-24
Abstract: In a hydrogen combustion turbine plant employing a topping bleed cycle, a low temperature hydrogen combustion turbine bleeds part of exhaust from a third turbine to cool a first turbine, thereby achieving a high efficiency in a desired temperature range while curtailing a cost increase without involving the addition of accessory instruments.
Patent CA-2232892-A1 (CA)
Title: Cap assembly for rectangular battery
Inventor: KIM CHANG-SEOB
IPC: H01M2/34
Filed: 1998-03-20
Abstract: There is provided a cap assembly for a rectangular battery comprising a cap cover in which a vent hole is formed, a positive electrode terminal which has a through hole leading to the discgarge hole and combines with the upper portion of the cap cover having an insulating plate interposed therebetween, a positive electrode tab connected to a positive electrode of an electrode assembly, a conductive safety vent support having a hollow rivet protrusion passing through the vent hole of the cap cover and the through hole of the positive electrode terminal to be coupled to the positive electrode terminal, and a conic conductive safety vent whose upper circumferential portion combines with the bottom surface of thesafety vent support to seal the hollow of the rivet protrusion, and whose vertexcontacts the upper surface of the positive electrode tab, wherein the vertex of the safety vent separates from the positive electrode tab and the safety vent is destroyed when the internal pressure of the battery increases to a predeterminedlevel.
Patent CA-2233767-A1 (CA)
Title: Subscriber access network, exchange, service control point, and method of establishing a connection
Inventor: LAUTENSCHLAGER WOLFGANG
IPC: H04Q3/62
Filed: 1998-04-29
Abstract: To establish a connection to a terminal (TE5) of a subscriber access network (AN), a connection request directed to the terminal and containing a public number (CN) corresponding to the number of the terminal in a first public numbering range is routed to a switching unit (SSP, SCP) of the subscriber access network. From the public number (CN), the switching unit (SSP, SCP) determines that of two or more private branch exchanges (PABX1 to PABX3) of the subscriber access network in whose private numbering range the public number (CN) is assigned to the terminal (TE5) as an extension number. The switching unit (SSP, SCP) forms a virtual number (CVN) from the public number (CN) and an identification assigned to the determined private branch exchange (PABX2), and enters this virtual number (CVN) in the connection request. The connection request with this virtual number is then routed to the determined private branch exchange (PABX2) to initiate the establishment of the connection to the terminal.
Patent CA-2236147-A1 (CA)
Inventor: BEYER DOUGLAS E
IPC: B32B27/30
Filed: 1996-11-05
Abstract: Composition comprenant un mélange (1) d'un polymère de chlorure de vinylidène obtenu à partir d'un mélange de monomères, dans lequel le constituant principal est chlorure de vinylidène et le reste est au moins un monomère éthylèniquement insaturé copolymérisable avec ledit polymère et (2) une quantité d'un composé d'ester aliphatique suffisante pour diminuer au maximum la dégradation de la couleur (formation de masses colorées) du polymère de chlorure de vinylidène pendant et après l'irradiation de la composition, qu'on utilise pour préparer un film thermorétractable à couches multiples. Cette composition peut également contenir une quantité d'un colorant stable violet ou bleu, afin de masquer les masses colorées générées pendant et après l'irradiation de ladite composition.
Patent CA-2236340-A1 (CA)
Title: Superfine microfiber nonwoven web
Inventor: PIKE RICHARD DANIEL
IPC: D04H1/46
Filed: 1996-11-15
Abstract: The present invention provides a web containing superfine microfibers. The web contains a blend of a first group of split microfibers which contains a first polymer component and a second group of split microfibers which contains a second polymer component, wherein at least one of the polymer components is hydrophilic. The invention additionally provides a meltblown fiber web having at least two groups of fibers, wherein each group of the fibers has a distinct cross-sectional configuration.
Patent CA-2236563-A1 (CA)
Title: Jetting tool for well cleaning
Inventor: SCOTT DAVID
IPC: E21B37/00
Filed: 1998-05-01
Abstract: An apparatus for cleaning subterranean wellbores is described. The apparatus comprises a sleeve member which is fixed to a part of the drillstring and a rotatable jet head with nozzles through which an abrasive fluid is discharged.  The nozzles are mounted such that the fluid jet is directed to an area of the wellbore immediately adjacent to a leading edge of the sleeve.  The nozzle head is restricted in its protrusion out of the sleeve.
Patent CA-2239470-A1 (CA)
Title: Absorbent article with controlled distribution of liquid
Inventor: PALUMBO GIANFRANCO
IPC: A61F13/20
Filed: 1993-09-13
Abstract: A disposable sanitary towel (1) comprising a liquid-permeable upper layer (5), an impermeable lower layer (7) and an absorbent element (6), is provided with an intermediate layer (10) disposed between the upper layer (5) and the absorbent element (6) and extending around the side edges (8) of the absorbent element (6) such that it can distribute the liquid received and prevent losses of liquid from the side edges of the absorbent element (6). The towel (1) is further provided with an absorbent element (6) comprising an improved layer structure.
Patent CA-2241537-A1 (CA)
Inventor: MCCALLUM TIMOTHY P
IPC: A42B1/24
Filed: 1996-12-06
Abstract: A hat (10) has a storage pocket (22) on the inside of the hat which is located entirely within a dead space (30) at the front portion of the hat extending from a location spaced above a hat band (28) towards the crown of the hat (10). When a hat (10) is worn, there will be a dead space (30) inside the hat (10) where the hat does not contact the wearer's head, which typically extends from a location just above the hat band (28) to the crown of the hat (10), due to the difference in curvature between the wearer's head and the hat (10) itself.  By positioning a storage pocket (22) in this area, unsightly bulges are avoided, as well as discomfort due to stored items pressing against the wearer's head.
Patent CA-2241636-A1 (CA)
Title: Electrodeless lamp having thermal bridge between transformer core and amalgam
Inventor: KLING MICHAEL R
IPC: H01J61/28
Filed: 1998-06-24
Abstract: An electric lamp assembly includes an electrodeless lamp, including an electrodeless lamp envelope, a transformer core disposed in proximity to the lamp envelope and an input winding disposed on the transformer core. The lamp envelope preferably comprises a closed-loop, tubular lamp envelope, and the transformer is preferably disposed around the lamp envelope. The electrodeless lamp envelope encloses a fill material for supporting a low pressure discharge. The electrodeless lamp further includes an amalgam located within the lamp envelope. The input winding receives radio frequency energy which produces a low pressure discharge in the lamp envelope. The electrodeless lamp includes a thermal bridge between the transformer core and the amalgam, so that the amalgam is heated by the transformer core during operation:
Patent CA-2242630-A1 (CA)
Title: Secure connector for blast initiation signal transfer
Inventor: SUTULA DANIEL P JR
IPC: C06C5/06
Filed: 1996-12-23
Abstract: A connector device (10) for disposing a detonator (12) in signal transfer relation with a signal-receiving line (30) receives the detonator (12) in a sleeve member (14). A line-engaging member (24) is connected to the sleeve member (14) and cooperates with sleeve member (14) to define a slot (26) therebetween within which the signal-receiving line (30) is disposed. The slot (26) is dimensioned and configured to dispose the signal-receiving line (30) therein in an undulate configuration. The device (10) may be used alone or in conjunction with a tail connector (56) to secure a donor line (74) in signal transfer relation with the input lead (13) of the detonator (12).
Patent CA-2242782-A1 (CA)
Title: Composition for inoculating low sulphur grey iron
Inventor: ECOB CHRISTOPHER
IPC: C22C35/00
Filed: 1997-01-10
Abstract: A composition for inoculating grey iron, particularly low sulphur grey iron, comprises by weight: rare earth 1.0 - 4.0 %, preferably 1.5 - 2.5 %; strontium 0.5 - 1.5 %, preferably 0.7 - 1.0 %; calcium 1.5 % maximum, preferably 0.5 %  maximum; aluminium 2.0 % maximum, preferably 0.5 % maximum; silicon 40.0 -80.0 %, preferably 70.0 - 75.0 %; iron balance. The composition is most preferably free of calcium and aluminium. The rare earth may be cerium, mischmetall or a mixture of cerium and other rare earths. The composition may be a mixture of ferrosilicon and the other constituents, a ferrosilicon alloy containing the other constituents or a rare earth and a silicon-bearing inoculant containing strontium.
Patent CA-2243643-A1 (CA)
Title: Methods and compositions for inducing oral tolerance in mammals
Inventor: HAAS SUSAN
IPC: A61K47/18
Filed: 1997-08-20
Abstract: The present invention relates to methods and pharmaceutical formulations for orally delivering an antigen to induce tolerance. The antigen is combined with derivatized amino acids or salts thereof. The induction of oral tolerance may be applied clinically for the prevention or treatment of auto-immune diseases and clinical allergic hypersensitivities, and for the prevention of allograft rejection. The figure illustrates examples of the derivatized amino acids.
Patent CA-2247314-A1 (CA)
Title: Resine synthetique, thermoplastique, expansible, de type feuille, resine expansee thermoplastique et procede de fabrication correspondant
Inventor: KOBAYASHI TOMOYUKI
IPC: B32B38/04
Filed: 1997-12-25
Abstract: Cette invention se rapporte à une résine synthétique, thermoplastique, expansible, de type feuille, qui permet de fabriquer un produit expansé thermoplastique doté d'une pseudoplasticité se traduisant par un gonflement unidirectionnel dans le sens de la largeur. Ledit produit possède une variance réduite de précision en épaisseur et en poids, il possède une résistance élevée à la compression et est doté d'excellentes caractéristiques telles que la planéité superficielle. L'invention se rapporte également à un procédé de fabrication de tels articles expansés de type feuilles. Cette invention concerne en outre une résine thermoplastique expansée permettant de fabriquer un produit en résine thermoplastique de type feuille (1) comportant des granulés (2) de résine thermoplastique, expansible, qui sont disposés sensiblement uniformément et sont intégralement reliés par l'intermédiaire d'un film fin (3) de résine thermoplastique, une couche expansée continue d'une résine thermoplastique, une pluralité de parties fortement expansées, constituées de résine thermoplastique et disposées sur au moins l'une des surfaces de la couche expansée continue, et un film fin faiblement expansé d'une résine thermoplastique et recouvrant la surface externe de la partie fortement expansée.
Patent CA-2248592-A1 (CA)
Title: Microspheres for use in the treatment of cancer
Inventor: VAUTHEY J NICOLAS
IPC: A61K9/06
Filed: 1998-09-23
Abstract: The subject invention pertains to novel materials and methods for use in treating patients afflicted with oncological disorders, such as tumors. One aspect of the invention concerns methods for treating tumors comprising the administration of drug loaded pH-sensitive microspheres to a patient in need of anticancer therapy. The pH-sensitive microspheres have a swelling transition with the pH range found in or near tumor tissue. When the microspheres swell, the loaded drug is released into the microenvironment of the tumor tissue. The subject invention also pertains to novel microspheres useful in the methods of the invention. The microspheres are capable of effectively releasing a loaded substance at a pre-determined pH. The subject invention also concerns novel methods for synthesizing the microspheres of the present invention.
Patent CA-2248715-A1 (CA)
Title: Method and apparatus for generating semantically consistent inputs to a dialog manager
Inventor: GORIN ALLEN LOUIS
IPC: G06Q30/00
Filed: 1998-09-24
Abstract: A  spoken  dialog  system  is  constructed  to sufficiently understand a user's response to the open-ended prompt 'How may I help you?' in order to route a caller to an appropriate destination, with subsequent processing  for  information  retrieval  or  call/task completion.  In this invention the relationships among the  call  types  are  structured  into  an  inheritance hierarchy.    Then  a  dialog  manager  exploits  this hierarchy  and  the  output  of a  spoken  language understanding module to generate a set of semantically consistent task objectives.
Patent CA-2253408-A1 (CA)
Title: Molecular tailoring of surfaces
Inventor: WANG JENN-HANN
IPC: B05D1/18
Filed: 1997-04-16
Abstract: This invention describes a new approach to three-dimensional molecular tailoring of surfaces. In this process, a plasma deposition step is initally employed to deposit reactive functional groups on the surface of a solid substrate. This is then followed by immersion of the coated substrate in a solution during which time solute molecules react with the functional surface groups introduced during the plasma process. Solute molecules are attached to the surface during this second step. This simple two-step process is of general utility in that both the nature of the plasma introduced surface group and the nature of the solute molecules can be varied. Additionally it is possible to provide exact control of the surface density of reactive groups introduced during the plasma process and thus the concentration of solute molecules coupled to the solid surfaces. A particularly significant aspect of this invention is that the second step chemical derivatization reactions can be carried out using aqueous solutions at room temperature. The RF plasma polymerization of substituted perfluorohexenes is shown to produce films having unusually high -CF3 content. These films are produced under both pulsed and continuous-wave plasma deposition conditions. The relative -CF3 content of these polymers increases with decreasing average RF power absorbed during the film formation processes. The films produced under the least energetic condition (i.e., pulsed plasma, 0.1 ms on/3.0 ms off and 100 watts peak power) are exceptionally hydrophobic, exhibiting advancing and receding water contact angles in excess of those observed with Teflon surfaces. The most hydrophobic films have a -CF3 content which represents 40 % of the carbon atoms present in the sample.
Patent CA-2253970-A1 (CA)
Title: System and method for electronic mass mailing
Inventor: WOODMAN CLARE E
IPC: G06Q10/00
Filed: 1998-11-12
Abstract: A system and method for electronically delivering a batch of mail having a plurality of mailpieces. The system includes a database having a plurality of instruction templates, wherein each template corresponds to one of a plurality of electronic delivery mechanisms. An electronic inserter operative to generate electronic insert mailpieces and a computer processor is provided for associating each mailpiece with at least one instruction template for coupling each mailpiece with at least one electronic mailpiece. An electronic message router is provided for delivering the electronic mailpieces and coupled electronic insert mailpieces by one of the plurality of electronic delivery mechanism.
Patent CA-2254672-A1 (CA)
Title: Attachment comb for hair clipper
Inventor: WAHL GREGORY
IPC: B26B19/20
Filed: 1998-11-25
Abstract: An attachment comb for use with a hair clipper that includes a series of teeth with lower peripheral surfaces of a particular curve that are configured for comfortable movement along the surface of a subject's head, and where the teeth are also preferably proportioned in such a manner as to permit the hair to be uniformly trimmed to relatively long lengths of an inch or greater. Specifically, in the present attachment comb, at least one of the teeth preferably includes a widened rib portion that extends along at least a portion of the length of the lower peripheral edge of that tooth. In addition, the lower peripheral surfaces of the teeth are preferably curved into a half-teardrop shape that includes both a concave curved surface and a convex curved surface. Finally, the teeth may be flared outwardly as they extend away from the base portion so that the hair being cut can be directed toward the cutting blades on the hair clipper.
Patent CA-2255213-A1 (CA)
Inventor: BAUDE DOMINIQUE
IPC: G02C7/04
Filed: 1998-12-15
Abstract: Il s'agit d'une lentille ophtalmique multifocale. Le profil de puissance (P) de la lentille en fonction de la hauteur (h) sur l'axe (A) de la lentille et de l'addi tion (Add) correspondant au degré de presbytie du porteur, est défini par une relation de l a forme: P(h) = f(P VL, Add, h)+C(Add, P VL)h2+B(Add, P VL) dans laquelle P VL est la puissance nécessaire pour la vision de loin, f une fon ction d'évolution entre les puissances de vision de près et de loin, C(Add, P VL) un c oefficient de correction d'aberration sphérique dépendant de l'addition et de la puissance en vision de loin, B(Add, P VL) un coefficient de correction de puissance dépendant du coefficient d'aberration sphérique.
Patent CA-2260371-A1 (CA)
Title: Toilet bowl ventilation system
Inventor: GHANNADI-BEHROUZY KEYVAN
IPC: E03D9/052
Filed: 1999-01-28
Abstract: the system described in the following pages has been designed to provide better ventilation in both commercial and residetial washrooms.
Patent CA-2262566-A1 (CA)
Title: Benzamidine derivatives and the use thereof as medicaments with ltb4-antagonistic effect
Inventor: SCHROMM KURT
IPC: A61P11/00
Filed: 1997-09-09
Abstract: The current invention relates to new benzamidine derivatives, a process for the manufacture and the use thereof as medicaments. The new benzamidine derivatives have the general formula (1).
Patent CA-2264158-A1 (CA)
Inventor: MACLIN KEITH M
IPC: A61K38/06
Filed: 1997-08-15
Abstract: L'invention porte sur une composition pharmaceutique et sur une méthode de traitement de troubles d'ordre compulsionnel à l'aide d'un inhibiteur de la NAALADase.
Patent CA-2264271-A1 (CA)
Title: Transformed wheat having improved breadmaking characteristics
Inventor: VASIL INDRA K
IPC: C12N15/82
Filed: 1997-08-13
Abstract: Transgenic plants with increased amounts of high molecular weight glutenin subunits (HMW-GS) have improved breadmaking capability. A specific example of wheat (cv Bob White) transformed to express HMW-GS 1Ax1 is provided. In addition, advantageous uses of the 1Ax1 promoter are described.
Patent CA-2267017-A1 (CA)
Inventor: DUCK GARY STEPHEN
IPC: G02B6/36
Filed: 1999-03-26
Abstract: A useful device is provided for coupling or splitting optical signals from one port to another. The symmetry of a lens is utilized in a manner whereby two linear arrays of optical ports are disposed adjacent the optical axis of the lens equidistant from the optical axis of the lens. An at least partially reflecting optical element is disposed at a collimating end of the lens. Signals launched into one array of ports reflects back to the second array of ports at the same end. In another embodiment of the invention utilizing these two linear arrays of waveguides, two matched lenses having an element disposed between are used as a coupler/splitter. In this arrangement ports are positioned on opposite sides of the optical axis equidistant from it.
Patent CA-2269910-A1 (CA)
Inventor: WEI ZHONG-YONG
IPC: A61K31/485
Filed: 1996-11-19
Abstract: A process for the preparation of 14-alkoxyindolomorphinans and 14-alkoxybenzofuranomorphinans is disclosed. The process facilitates the preparation of a large variety of 14-alkoxy substituted indolomorphinans and benzofuranomorphinans in which a 3-hydroxy substituent is present.