baber/WOPTO huggingface dataset:
Patent CA-2235574-A1 (CA)
Inventor: SAWYER FRANCOIS
IPC: H04M15/12
Filed: 1996-10-04
Abstract: In a bandwidth-on-demand type communications system, like that provided with a code division multiple access (CDMA) cellular communications system, charging subscribers for calls based on communications length provides an inaccurate measure of communication cost, and further serves to discourage use of the system for data transmission applications. To provide a more accurate cost determination, the amount of bandwidth used by each communication is metered and multiplied by a charging rate. In particular, measurements (104) of the maximum amount of bandwidth (106, 108) used during predetermined time intervals (110) are made during the course of each communication, with the maximum bandwidth measurements being summed (112) to determine an estimate of the total amount of bandwidth used during the communication. The charge for the communication is then determined by multiplying (116) the estimated total bandwidth measurement by a charging rate multiplier.
Patent CA-2238788-A1 (CA)
Title: Water-swellable, hydrophilic polymer composition
Inventor: WEISMANTEL MATTHIAS
IPC: C08F4/34
Filed: 1998-05-27
Abstract: Water-swellable, hydrophilic polymer compositions The present invention relates to water-swellable, hydrophilic polymer compositions which can be prepared by free-radical (co)polymerization of one or more hydrophilic monomers in the presence of starch and/or chemically modified starch, wherein a free-radical initiator which forms three or more free radical sites per molecule is used.
Patent CA-2239605-A1 (CA)
Inventor: SATHE GANESH MADHUSUDAN
IPC: A61P31/04
Filed: 1998-06-03
Abstract: H7TBA62 polypeptides and polynucleotides and methods for producing such polypeptides by recombinant techniques are disclosed. Also disclosed are methods for utilizing H7TBA62 polypeptides and polynucleotides in the design of protocols for the treatment of infections such as bacterial, fungal, protozoan and viral infections, particularly infections caused by HIV-1 or HIV-2; pain; cancers; anorexia; bulimia; asthma; Parkinson's disease; acute heart failure; hypotension; hypertension; urinary retention; osteoporosis, angina pectoris; myocardial infarction; ulcers; asthma; allergies; benign prostatic hypertrophy; and psychotic and neurological disorders, including anxiety, schizophrenia, manic depression, delirium, dementia, severe mental retardation and dyskinesias, such as Huntington's disease or Gilles dela Tourett's syndrome, among others and diagnostic assays for such conditions.
Patent CA-2241852-A1 (CA)
Title: Fused pyrrolo(2,3-c)carbazole-6-ones which potentiate activity of gamma interferon
Inventor: DIEBOLD JAMES L
IPC: C07D487/04
Filed: 1997-02-20
Abstract: Disclosed in this patent document are synthetic, biologically active molecules referred to as fused pyrrolo(2,3-c)carbazole-6-ones.      These molecules are represented by general formulae (I) and (II). Methods for making and using the fused pyrrolo(2,3-c)carbazole-6-ones are also disclosed.
Patent CA-2243155-A1 (CA)
Title: Coin validator
Inventor: BARSON ANDREW WILLIAM
IPC: G07D5/08
Filed: 1996-11-28
Abstract: A coin validator (1) is operable in a set up mode prior to normal operation, in which initial window data (W) stored in its memory, is compared with data from a known true coin, and the initial window is progressively dragged and shrunk depending on the outcome of the comparison, to produce an operating window (W'), narrower than the initial window, which can be used during normal operation of the validator, for comparison with coin data (x) from coins under test, in order to determine coin acceptability. The initial window (W) can be the same for all validators of the same design, and the dragging and shrinking configures the operating window (W') to the validators individually, to take account of manufacturing tolerances.
Patent CA-2248004-A1 (CA)
Title: Process for preparing 1,6 hexanediol and caprolactone
Inventor: RUST HARALD
IPC: C07D313/04
Filed: 1997-02-28
Abstract: The invention relates to a process for preparing 1,6 hexane diol and .epsilon.-caprolacton from a carboxylic acid mixture containing adipic acid, 6-hydroxy caproic acid and, in small quantities, 1,4 cyclohexane diols.  Said mixture is obtained as a by-product of the oxidation of cyclohexane into cyclohexanone/ cyclohexanol with oxygen or gases containing oxygen, by water extraction of the reaction mixture. Said process involves esterification and hydrogenation of a partial stream into hexane diol and cyclization of 6-hydroxy caproic acid esters into caprolacton. According to this process: (a) the monocarboxylic acids and the dicarboxylic acids contained in the aqueous reaction mixture are reacted with a low-molecular alcohol to form the corresponding carboxylic acid esters; (b) the excess alcohol, water and low-boiling agents of the resultant esterification mixture are released in a first distillation stage; (c) separating into a ester fraction substantially free of 1,4 cyclohexane diols, and a fraction containing at least the greater part of the 1,4 cyclohexane diols is carried out from the bottom product in a second distillation stage; (d) at least part of a stream substantially containing 6-hydroxy caproic acid ester is separated from the ester fraction in a third distillation stage; (e) the ester fraction from (d), from which 6-hydroxy caproic acid ester was at least partially removed, is hydrogenated catalytically and 1,6 hexane diol is extracted by distilling the hydrogenated product in a known manner, and (f) the stream substantially containing 6-hydroxy caproic acid ester is heated to temperatures above 200 °C at reduced pressure, thereby causing cyclization of 6-hydroxy caproic acid ester to form caprolacton, and pure e-caprolacton is recovered from the cyclization product by distillation.
Patent CA-2248836-A1 (CA)
Inventor: KELLY L PATRICK
IPC: E01H4/02
Filed: 1998-10-15
Abstract: .epsilon.               An ice rink covering system utilizes a plurality of support mechanisms for sets of non-flexible insulated panels which are interconnected by a hinge mechanism between each pair of adjacent panels. The support mechanisms are connected to the panels by lifting units for selectively moving the panels in an accordion fashion for either edge to edge contact when the panels cover a rink or side to side contact when the panels are in their stored condition.
Patent CA-2250411-A1 (CA)
Title: Uv stable polyvinyl butyral sheet
Inventor: KRACH MARY S
IPC: C08L29/14
Filed: 1997-03-10
Abstract: Polyvinyl butyral sheet for laminated safety glass containing multivalent, preferably divalent, metal salt and a UV-stabilizing amount of a benzotriazolebased compound of formula (1) wherein R1 denotes CH3, linear or branched C5 alkyl or linear or branched C12 alkyl and R2 denotes CH3 or linear or branched C5 alkyl.
Patent CA-2252848-A1 (CA)
Title: Servo tracking system utilizing phase-sensitive detection of reflectance variations
Inventor: FERGUSON R DANIEL
IPC: G01S17/86
Filed: 1997-04-22
Abstract: Apparatus and methods for tracking a feature on a target surface and continually providing analog corrections to tracking mirrors in real time by utilizing a low-power incoherent tracking beam to detect the movements of a reference feature on the target and confocal reflectometry to monitor the reflection from the tracking beam's current position are described. The apparatus includes a dithering device for dithering the tracking beam in a first and a second direction with an oscillatory motion, a tracking device for controlling the position of a therapeutic beam relative to a target and for controlling the position of the tracking beam relative to a reference feature, a reflectometer for providing an output signal with a phase corresponding to a phase of the reflected tracking beam, and a signal processor for comparing the phase of the reflectometer output signal to the phases of the oscillatory motion and for controlling the tracking device so that the therapeutic beam to tracks relative to the reference feature.
Patent CA-2253988-A1 (CA)
Title: Metal diaphragm type valve
Inventor: OGAWA SHUHEI
IPC: F16K41/12
Filed: 1998-11-12
Abstract: A metal diaphragm type valve includes a valve seat holder supported from a rotatable valve stem, a metal diaphragm and a deflection limiter.  The valve seat holder has a shaft extending upwardly through central openings in the diaphragm and the deflection limiter.  A diaphragm support step having an annular flat surface joining an arcuate shoulder is provided around the shaft of the valve seat holder and the inner peripheral edge of the diaphragm rests on the flat surface.  The deflection limiter has a flat bottom surface facing the top surface of the diaphragm and an arcuate surface extends radially outwardly from the flat bottom surface.  The deflection limiter, diaphragm and valve seat holder are welded together by a weld extending through the flat bottom portion of the deflection limiter and the inner peripheral edge of the diaphragm to the flat surface on the seat holder, the weld forming an air-tight seal between the valve chamber and the passage for the shaft.  The radial dimensions of the flat surfaces are different so that bending stresses occur in different regions of the diaphragm depending on whether the valve is opened or closed.
Patent CA-2255450-A1 (CA)
Title: Optical modulator using isolator and optical transmitter including the same
Inventor: KIM SUNG-JUN
IPC: G02F1/09
Filed: 1998-12-07
Abstract: An optical modulator using an isolator, and an optical transmitter including the same are provided. The optical modulator modulates a carrier wave generated by an optical source according to a predetermined electrical signal, and includes an isolator including a Faraday rotator in which the rotation angle of polarization is different according to the intensity of an applied magnetic field, for controlling isolation of an optical signal according to the polarization rotation angle and outputting a modulated optical signal, a magnetic field generator for producing a magnetic field whose intensity is controlled by a predetermined electrical signal, and applying the produced magnetic field to the isolator, and a signal generator for supplying the electrical signal to the magnetic field generator and controlling the intensity of the electrical signal. The magnetic field generator is mounted on the optical isolator, the electric signal applied to the magnetic field generator isadjusted to control the intensity of the magnetic field formed in the isolator. Accordingly, isolation of an optical signal is activated or deactivated, therebymodulating a continuous wave optical signal. Therefore, a small and cheap optical modulator having an excellent temperature property can be realized and easily housed in the transmitter.
Patent CA-2255902-A1 (CA)
Title: Appareil rotatif pour le retrait du cristallin
Inventor: MIRHASHEMI SOHEILA
IPC: A61B17/00
Filed: 1996-05-24
Abstract: L'invention concerne un système (300) et un procédé permettant de réduire et d'enlever le cristallin de l'oeil d'un mammifère. Ledit système (300) comporte un dispositif à sonde rotatif (302) de réduction du cristallin présentant une configuration rectiligne ou incurvée. Ledit dispositif à sonde (302) comprend une gaine extérieure (320) tubulaire dans laquelle s'étend un arbre d'entraînement (316) rotatif. Une tête rotative (318) de réduction de cristallin est placée à l'extrémité distale de l'arbre d'entraînement (316). Cette tête (318) est configurée et construite de façon à aspirer un flux de fluide et de matière constituant le cristallin entrant en contact avec elle ce qui facilite la réduction complète du cristallin sans qu'il soit nécessaire de faire exécuter un mouvement axial (c'est-à-dire longitudinal) important à la sonde à l'intérieur de la capsule du cristallin. La partie distale de la gaine tubulaire (320) est, de préférence, configurée de façon à couvrir une partie de la tête de réduction de cristallin (318) pendant son fonctionnement, cela pour éviter d'endommager par inadvertance la capsule du cristallin. La partie distale de ladite gaine (320) peut également être orientée ou positionnée de façon à diriger le flux de fluide et de matière constituant le cristallin créé par la tête rotative de façon qu'il suive un trajet préféré à l'intérieur de la capsule du cristallin. Le dispositif à sonde (302) peut comporter des moyens servant à introduire un fluide dans l'oeil et/ou à retirer un fluide et/ou des débris de l'oeil.
Patent CA-2255992-A1 (CA)
Title: Stearic-modified ionomers for golf balls
Inventor: CHEN JOHN CHU
IPC: A63B37/12
Filed: 1998-04-14
Abstract: Ethylene/(meth)acrylic acid ionomers which have been modified with relatively low levels of a stearic acid moiety, particularly metal stearates and especially calcium stearate have improved resilience for a given level of hardness of PGA Compression values. The improvement is seen in bulk material when measurements are made on solid neat spheres. When used as cover material, the improvement is more manifest for softer material, and is less, or disappears, for typical mixed metal ionomer hard covers. The stearic-modified ionomers or ionomer blends are especially useful when the ionomer is formulated for use as a golf ball core, center, one-piece ball and as a soft golf ball cover. For covers, softer ionomer compositions will show an improvement.
Patent CA-2256258-A1 (CA)
Title: Swab test for determining relative formation productivity
Inventor: ZAMFES KOSTA
IPC: E21B49/08
Filed: 1998-12-16
Abstract: The productivity of a formation is determined by stroking the drill bit up and down (swabbing) in the zone of interest for creating a suction in the wellbore and inducing the flow of hydrocarbons from the formation. The drilling mud 15 is first circulated to deplete hydrocarbon gas from the mud 15, the zone is swabbed, and the mud 15 is again circulated and the quantity of hydrocarbon gas contained therein is measured for comparison against that known for predetermined productivity. Preferably, the swabbing is performed enough times to ensure measurable production regardless of filter cake or invasion.
Patent CA-2258176-A1 (CA)
Title: Antenna for mobile communications device
Inventor: EGGLESTON STEVE W
IPC: H04M1/02
Filed: 1999-01-08
Abstract: A new category of mobile communications antenna is implemented in a single layer of conducting material. Wire-slot sections, including wire-tabs defining slots in the material, partially extend around the perimeter of at least one patch-tab section of the antenna. The perimeter of the at least one patch-tab section forms one edge of each slot, and the wire-tab of a wire-slot section forms a second edge of the slot. The wire-tabs of the wire-slot sections are separated from the patch-tab section by the slots and merge into the patch-tab section at a desired point. The length of each of the wire-slot sections may vary. A portion of each of a pair of the wire-tabs of the wire-slot sections functions as an input feed. The patch-tab section may be implemented as a single tab or as a plurality of tabs separated from one another by a slot. By varying the relative geometries of the patch-tab, wire-slots and tabs of the wire-slots, the electrical properties of the antenna, including the input impedance, can be adjusted.
Patent CA-2258642-A1 (CA)
Inventor: JENKO EDWARD
IPC: B29C45/17
Filed: 1999-01-05
Abstract: A system for clamping an object, such as a heater, to a cylindrical member, such as a nozzle or a hot runner channel is described. The system has at least one deformable elastic member for applying a clamping force to the object so as to hold the object against an outer surface of the cylindrical member and an annular sleeve for compressing the at least one deformable elastic member and for directing the clamping force radially inwardly toward the cylindrical member. The deformable elastic member, in one embodiment, is formed by a spring member which surrounds the object and the cylindrical member. In an alternative embodiment, the deformable elastic member comprises a plurality of hollow tubes surrounding the object and the cylindrical member, which tubes are hollow, thin walled, and elastic. The annular sleeve is preferably formed from a material having a thermal expansion coefficient less than the thermal expansion coefficient of the material forming the cylindrical member. Thus, as heat is applied, the cylindrical member expands more than the outer sleeve causing compression of the deformable elastic member(s) and direction of the clamping force towards the object to be held against the cylindrical member. A method for using the clamping system of the present invention is also described.
Patent CA-2258773-A1 (CA)
Inventor: KORDESH KARL V
IPC: H02J7/00
Filed: 1996-06-20
Abstract: Protection circuit for rechargeable battery cells of the type sensitive if being charged by a charging source with a voltage exceeding a predetermined threshold level, that comprises a battery cel to be protected and a shunt path connected to the terminals of the battery cell, the shunt path is substantially non-conductive if the charging voltage is below the threshold level and it is conductive if the voltage approaches or exceeds said level so that current will flow dominantly through the shunt path instead of through the battery cell, wherein the improvement lies in that the shunt path comprises: a semiconductor switch means with an input junction and with a pair of output terminals, the input junction is connectable to the source of charging voltage for getting forward biased thereby, the output terminals of the switch are connected in the shunt path, the switch means is conductive on condition if the input junction is forward biased and if the voltage across the output terminals is not less than a predetermined threshold voltage lower than said threshold level, the switching means has a flat non-linear voltage-to-current characteristic; and diode means with a pair of terminals in series connection with the switching means, the diode means has a forward bias voltage measurable across said terminals if current flows therethrough; and the forward bias voltage of the diode means and the threshold voltage of the switching means have opposing temperature coefficients and define together said threshold level.
Patent CA-2259522-A1 (CA)
Title: Method for making steel in a liquid melt-fed electric furnace
Inventor: KREMER ANDRE
IPC: C21C5/52
Filed: 1997-06-10
Abstract: A method for making steel in an electric furnace, wherein a predetermined amount of liquid melt is fed into the electric furnace, is disclosed. The method comprises the steps of (a) continuously feeding a controlled flow of liquid melt into the furnace without interrupting the heating from the electric arc, (b) continuously injecting a refining gas into the furnace before the C and/or Si content of the metal bath reaches a predetermined value, until the end of the feeding process, and (c) pursuing the injection of refining gas after the predetermined amount of melt has been fed into the furnace, until the target value for the C and/or Si content of the metal bath has been reached.
Patent CA-2260329-A1 (CA)
Inventor: LUISE MARCO
IPC: H04B1/707
Filed: 1999-02-10
Abstract: An adaptive signal receiver comprising at least one blind detection unit arranged to be robust to asynchronous multiple access interference (MAI). The useful signal is detected using a user signature sequence comprised of a fixed term and a complex adaptive part having a length that extends over a number of samples within a defined observation window. Provision is made for updating automatically and periodically the complex adaptive part of the signature sequence.
Patent CA-2264463-A1 (CA)
Title: Fast clearing polyethylene
Inventor: CHISHOLM P SCOTT
IPC: C08L71/02
Filed: 1999-03-05
Abstract: Linear low density polyethylene (LLDPE) which is produced by a gas phase polymerization process is difficult to extrude into plastic film.      This invention mitigates this problem by using a blend of a first LLDPE (which is prepared in a gas phase polymerization process) with a small amount of a second LLDPE (which is prepared in a specific solution polymerization process) and a processing additive which comprises from 500 to 2000 parts per million of a poly(oxyalkylene) polymer, based on the combined weight of the two LLDPE resins.
Patent CA-2266028-A1 (CA)
Title: Compositions buccales contenant du fluocinonure
Inventor: BUSER THOMAS
IPC: A61P1/02
Filed: 1997-09-05
Abstract: Cette composition topique contient du fluocinonure dans une base de mono-oléate de glycéryle présentant une teneur en eau inférieure à environ 20 % en poids du poids de la composition, et elle est destinée au traitement d'ulcérations, d'inflammations et de lésions de la cavité buccale. On étale sur une ulcération une mince couche de cette composition, laquelle forme un film qui adhère très bien à la muqueuse et maintient le fluocinonure en contact avec l'ulcération pendant une période prolongée. Cette composition est notamment utile pour le traitement d'aphtes buccaux, de l'inflammation d'une muqueuse (en particulier mucositis neuroticans agranulocytica), de la maladie de Crohn à localisation buccale, de la granulomatose bucco-faciale, de la pemphigoïde cicatricielle, du lichen plan érosif, de la gingivite telle que la gingivite desquamative et la gingivite associée au lichen plan, ainsi que des maladies vésiculo-érosives buccales.
Patent CA-2266956-A1 (CA)
Inventor: HOLDER MICHAEL JOHN
IPC: B01J20/04
Filed: 1997-10-16
Abstract: A soda lime formulation comprises calcium hydroxide in admixture with sodium hydroxide and potassium hydroxide and water, and further comprises a zeolite such as sodium aluminium silicate. The formulation has improved mechanical strength and may be prepared in granular form by mixing its constituents with water to form a paste and passing the paste between a pair of rollers having hemispherical depressions therein.
Patent CA-2267140-A1 (CA)
Inventor: DUMONT BERTRAND
IPC: F16F1/12
Filed: 1999-03-15
Abstract: This invention relates to an automotive type utility trailer which main features are. The ease of operation when backing off (reverse) with the car and ease of dumping, when you want to load or unload a recreational vehicule or any other thing.     Everybody who used a trailer as had problems when backing o~~in an awkward place and a lot of people do not use trailers because it is hard to manoeuvre. With the frailer, backing off is not more difficult than when you back off with the car only, since there is no pivoting point between the car and the trailer, the trailer only moves up and down to absorb the bumps in the terrain. With the increasing popularity of all kinds of recreational vehicule, there is good market for small trailers made for that special application.