baber/WOPTO huggingface dataset:
Patent CA-2093838-C (CA)
Title: Mobile data terminal with external antenna
Inventor: JENNESS ROBERT VINCENT
IPC: H01Q1/22
Filed: 1993-04-13
Granted: 1997-07-01
Abstract: A mobile data terminal external antenna is disclosed for use with a battery powered data processing terminal which includes a radio frequency communication device, such as a cellular telephone transceiver. Multiple antenna elements are mounted within a D-shaped flexible tubular member having a very low dielectric constant which is then affixed to the external surface of the data processing terminal, utilizing an adhesive on the flat surface thereof. The flexible tubular member is preferably mounted along at least two edges of the data processing terminal display module such that spatial or polarization diversity for the multiple antenna elements may be provided. A coaxial connector is utilized to couple the multiple antenna elements to a radio frequency communication device within the data processing terminal. In this matter, an external antenna may be added to a battery powered data processing terminal in a manner which will protect the antenna without interfering with radio frequency transmission or reception while simultaneously providing additional protection for the data processing terminal.
Patent CA-2096980-C (CA)
Inventor: GRAVES DELBERT B
IPC: G01G23/01
Filed: 1993-05-26
Granted: 1998-09-22
Abstract: An improved scale,  including bathroom-type scales,  is provided by employing markings on the dial for calibrating the scale using photosensor equipment.  The adjusting nut of the scale and the calibration stud of the scale are both accessible for automated mechanical calibration after assembly of the scale.   As a result, an iterative calibration procedure is employed by machine as opposed to traditional manual methods. Photosensors read the dial and send a signal to mechanical driver or wrench mechanisms for automated calibration.  The improved  scale  and  calibration  method  reduces  labor  and production costs.
Patent CA-2107725-C (CA)
Title: Electric strike for fail safe or fail secure operation
Inventor: UYEDA ALAN K
IPC: E05B63/00
Filed: 1993-10-05
Granted: 2003-12-23
Abstract: An electrical release door strike comprising a carrier frame; a strike bolt carried by the frame for movement when released, allowing door opening, the bolt adapted to receive and resist door opening force prior to bolt movement; a solenoid carried by the frame to have either of two alternate positions relative to the frame; and structure operatively connected between the solenoid and bolt in either of the positions to cause the bolt to assume i) a fail safe condition when the solenoid is in one of the positions, ii) a fail secure condition when the solenoid is in the other of the positions.
Patent CA-2110386-C (CA)
Title: Method for the enzymatic synthesis of alpha-sialylated oligosaccharide glycosides
Inventor: VENOT ANDRE P
IPC: A61K31/70
Filed: 1992-06-09
Granted: 2000-04-25
Abstract: Disclosed are methods for the enzymatic synthesis of alpha-sialylated oligosaccharide glycosides: Specifically, in the disclosed methods, sialyltransferase is activated to transfer an analogue of sialic acid, employed as its CMP-nucleotide derivative, to an oligosaccharide glycoside. The analogue of sialic acid and the oligosaccharide employed in this method are selected to be compatible with the sialyltransferase employed.
Patent CA-2113696-C (CA)
Title: Non-consumable anode and lining for aluminum electrolytic reduction cell
Inventor: BECK THEODORE R
IPC: C25C3/18
Filed: 1994-01-18
Granted: 1999-12-14
Abstract: An oxidation resistant, non-consumable anode, for use in the electrolytic reduction of alumina to aluminum, has a composition comprising copper, nickel and iron.      The anode is part of an electrolytic reduction cell comprising a vessel having an interior lined with metal which has the same composition as the anode. The electrolyte is preferably composed of a eutectic of AlF3 and either (a) NaF or (b) primarily NaF with some of the NaF replaced by an equivalent molar amount of KF or KF and LiF.
Patent CA-2117682-C (CA)
Title: Photoinduced grating in b2o3 containing glass
Inventor: AINSLIE BENJAMIN JAMES
IPC: C03B19/14
Filed: 1993-06-24
Granted: 1999-09-21
Abstract: It has been demonstrated that B containing glasses are sensitive to radiation in the band 225-275 nm and, therefore, B2O3 glasses are particularly adapted to receive refractive index modulation,e.g., to make reflection gratings. Glasses containing SiO2 and B2O3 are particularly suitable when the grating is to be localised in t he cladding of a fibre. Glasses containing SiO2, GeO2, and B2O3 are suitable when the grating is in the path region of a wa veguide, e.g., in the core of a fibre.
Patent CA-2122248-C (CA)
Title: Free-running capacitive discharge ignition system with spark frequency control
Inventor: DOLMOVICH BRUCE E
IPC: F02P15/00
Filed: 1993-09-08
Granted: 1997-11-04
Abstract: An ignition system is provided that marries a free-running discharge circuit with a fast-charging, high voltage converter without resulting in an excessive rate of discharge.  To this end, the free-running discharge circuit employs a passive switch embodied either as a spark-gap device or a passive network of semiconductor elements.  A feedback circuit detects discharge events at the discharge circuit and, in response thereto, selectively enables and disables the fast-charging converter.  A spark rate clock is integrated into the feedback circuit for the purpose of setting the average discharge rate to a predetermined value.
Patent CA-2123656-C (CA)
Inventor: NORRIS ROGER PHILIP
IPC: A01D34/00
Filed: 1994-05-16
Granted: 2003-09-09
Abstract: A grass cutting device suitable for automatic and unattended operation, comprises at least one drive wheel;   a power unit operatively coupled to said drive wheel to propel said device;   a cutter mechanism to cut grass over which said device passes and obstacle detection means capable of detecting an obstacle in the path of said device and being operably linked to said power unit to cause said device to retreat and turn away from said obstacle.        The grass cutting device preferably further comprises mechanical long grass detection means arranged to detect long grass in the path of said device.
Patent CA-2123808-C (CA)
Inventor: GUDIBANDE SATYANARAYANA R
IPC: C12Q1/68
Filed: 1992-12-07
Granted: 2003-05-27
Abstract: This invention relates to a new electrochemiluminescent (ECL) label for oligonucleotides using phosphoramidite chemis-try.
Patent CA-2124282-C (CA)
Title: Purification process of pentafluoroethane
Inventor: NISHIMURA ATSUO
IPC: C07C17/386
Filed: 1994-05-25
Granted: 2004-06-29
Abstract: A purification process of pentafluoroethane from a crude pentafluoroethane containing chloropentafluoroethane as a by-product by extractive distillation using an extracting reagent having a standard boiling point of from -10°C to 100°C and being selected from paraffinic hydrocarbons, alcohols, ethers, esters, and ketones.
Patent CA-2125118-C (CA)
Title: Reusable candle
Inventor: AUGER GERARD
IPC: F23D3/16
Filed: 1994-06-03
Granted: 2002-03-19
Abstract: Disclosed herein is a candle having a hollowed core for receiving a reservoir structure for containing a liquid fuel, the candle further comprising:          (a)  a wick inserted into the reservoir structure and projecting upwards from the reservoir structure and the candle to a terminal end capable of being lit, the wick being adapted to wick the liquid fuel up to the terminal end;          (b)  collar structure for maintaining the wick in the reservoir structure.
Patent CA-2125422-C (CA)
Inventor: NISHIO MAKOTO
IPC: H04B10/272
Filed: 1994-06-08
Granted: 1997-04-22
Abstract: An optical wavelength selection control system in an optical network includes an optical center node device and a plurality of terminal devices each comprised of a work station and an interface.  The optical center node device includes a control circuit, a plurality of optical switches and a plurality of tunable wavelength filters.          When there occurs a collision among the plurality of terminal devices wherein a plurality of terminal devices send simultaneously optical packets to the same terminal device, the control circuit operates to control the optical switches and the tunable wavelength filters such that they select only one optical packet, based on information relating to, for example, a data length to be transferred.          The control circuit sends out an acknowledgement (ACK) signal to the terminal device whose optical packet has been selected.  To each of the terminal devices whose optical packets have not been selected, the control circuit sends out, in addition to a not-acknowledgement (NACK) signal, a signal indicating a resending time schedule.  There is no possibility that these optical packets will be involved in further collisions, which ensures enhanced throughput of the network system.
Patent CA-2125759-C (CA)
Title: Cold spot baffle for coupling box
Inventor: HARVEY ERIC A
IPC: F24H8/00
Filed: 1994-06-13
Granted: 1998-02-03
Abstract: A coupling box for a condensing furnace having primary and secondary heat exchangers places the discharge ports of the primary heat exchanger in fluid communication with the inlet ports of the condensing heat exchanger.  A baffle in the coupling box directs the flow of flue gas evenly therein to maintain temperature equilibrium so that water vapor does not condense in the coupling box.
Patent CA-2133175-C (CA)
Inventor: HARRISON MAUREEN M
IPC: A61K31/436
Filed: 1994-09-28
Granted: 2004-08-17
Abstract: The present invention comprises novel oral rapamycin formulations which contain, per each 100 ml of the formulation, from about 0.01 to about 10.0 grams per 100 ml of rapamycin, from about 0.1 to about 10 ml of surfactant, from about 0.1 to about 25 ml of N,N-dimethylacetamide, and from about 65 to about 99.8 ml of a lecithin or phospholipid solution.
Patent CA-2136362-C (CA)
Inventor: WASILEWSKI OLGIERD
IPC: C09D11/06
Filed: 1994-11-22
Granted: 2007-10-02
Abstract: A printing ink composition comprising: (a) a dispersion of about 10-25 wt.%, based on the weight of the composition, of a pigment in about 40-90 wt.%, based on the weight of the composition, of a C7-C40 oil; and (b) about 0.1 to 5.0 wt.%, based on the weight of the composition, of a soap of a tall oil fatty acid. The printing ink composition has the unique capability of being utilized in lithographic printing processes utilizing tap water rather than aqueous fountain solution in the dampening system of the press.
Patent CA-2136622-C (CA)
Title: Phosphotriester-type biologically active compounds
Inventor: GOSSELIN GILLES
IPC: C07H19/04
Filed: 1993-05-24
Granted: 2006-01-03
Abstract: Compounds of formula RS-P(=O)(QR)-Nu where: R is a radical -(CH2)n-W-X; X is a radical -C(=Z) (Y) or -S-U; Z is O or S; W is O or S; Q is O or S; Y and U are an alkyl, aryl or saccharide radical which is optionally substituted with, for example, an OH, SH or NH group; n is equal to 1 to 4, preferably 1 or 2; and Nu is a radical consisting of a residue of a biologically active compound or the dephosphorylated residue of a compound which is biologically active when it bears a phosphate or phosphonate group.
Patent CA-2140652-C (CA)
Title: Permanent aqueous marker inks
Inventor: LOFTIN RACHEL M
IPC: C09D11/16
Filed: 1993-07-13
Granted: 1999-03-16
Abstract: Permanent aqueous marker inks are provided which include surfactant, a pigment, a film-forming polymer, and water. The surfactant may be a combination of a hydrocarbon, preferably an alkylphenol etho xylate and a fluorocarbon, or it may be a silicone.
Patent CA-2145537-C (CA)
Inventor: PERRY MICHAEL ROBERT
IPC: F16K17/16
Filed: 1993-09-23
Granted: 2002-06-25
Abstract: A safety system for relieving over-pressure in a pipeline carrying a congealable material, in which the pipeline is provided with a bursting disc located in a spur of the pipeline, the disc being mounted in a holder so that the surface of the disc forms part of the wall of the pipeline so that material passing through the pipeline washes the surface of the disc and keeps it clean.
Patent CA-2147627-C (CA)
Title: Isolant ameliore pour vehicule et methode de fabrication et d'utilisation
Inventor: NORVELL JEAN
IPC: B32B5/18
Filed: 1994-06-24
Granted: 1998-02-10
Abstract: Isolant amélioré pour véhicules et méthode de fabrication et d'utilisation de ce produit.  L'isolant comporte une ou plusieurs couches de matériau isolant (14) scellées à l'intérieur d'un boîtier (12) imperméable aux liquides tout en étant en partie perméable à l'humidité.  Lorsqu'il est monté dans un véhicule étanche dans lequel l'accumulation d'humidité pose un problème, l'isolant visé par la présente invention isole l'eau de condensation et l'empêche de causer des dommages au contenu ou à la coque du véhicule.  Lorsque les niveaux d'humidité diminuent à l'intérieur du véhicule, l'humidité est libre de s'évaporer de l'isolant et de se disperser, réduisant ainsi le poids du véhicule et, par le fait même, les coûts propres à la rétention excessive d'humidité dans un véhicule.
Patent CA-2148936-C (CA)
Inventor: MORMANN WERNER
IPC: C08G18/81
Filed: 1994-09-07
Granted: 1999-03-16
Abstract: Described are anisotropic polymers produced from a diepoxide A of the formula (I) in which:  Y is O-CY2, CH2 or a C-C single bond; X is one of structural elements (a), (b), (c), (d), (e) or (f); R1 to R5, independently or each other, are hydrogen, halogen or a methyl, ethyl, propyl or butyl group; or R2, R3, R4 or R5 may be a benzene group, whereby R2 to R5 is hydrogen when R1 is not hydrogen and R1 is hydrogen when R2 to R5 are not hydrogen, and n may be 1 to 3; whereby the central grouping Z may be an aromatic heterocyclic ring containing one or two nitrogen atoms or a cycloaliphatic trans-1,4-cyclohexylene group, and from a diisocyanate B of one of the formulae (II) to (VII) in which:  Y is a C-C single bond, CH2 or C2H4; X is one of structural elements (a), (b), (c) or (f), n is 0 or 1 and R1 to R5 are the atoms or groups given in the definition of formula (I):  whereby the central grouping Z may also be a cycloaliphatic trans-1,4-cyclohexylene group, and R is (CH2)6-NCO, the molar ratio of diepoxide A to diisocyanate B being about 2:1 to 1:4.  Also described is a method for the production of such anisotropic polymers, in which the diepoxide A and the diisocyanate B are reacted at a temperature of about 100 to 300 °C at a molar ratio of about 2:1 to 1:4.  These anisotropic polymers have a low coefficient of thermal expansion in the direction of orientation of the molecules and can be used in the manufacture of insulation materials, laminates and coatings.
Patent CA-2154016-C (CA)
Inventor: ATHERTON DAVID
IPC: B41J2/01
Filed: 1995-07-17
Granted: 2005-06-28
Abstract: The present invention is directed to an ink receiving sheet having anti-blocking properties, containing: a) a polymer substrate, b) an ink receptive coating disposed on at least one layer which having a water-soluble component, and c) particulates dispersed in the ink receptive coating, having an average particle size of from 15 µm to about 50 µm, a particle size span is equal to or smaller than 1.0, and a refractive index of from about 1.2 to about 2.4. The present invention is also directed to the ink receptive coating per se, and to methods of ink jet printing using the above ink receiving sheet.
Patent CA-2155284-C (CA)
Inventor: CLINTON MARY BETH
IPC: A61M5/00
Filed: 1995-08-02
Granted: 1999-10-05
Abstract: An apparatus is provided for safely and conveniently holding and dispensing needle assemblies.   The apparatus includes a generally tubular holder with opposed dispensing and inserting ends and an elongate passageway extending therebetween.  The tubular holder is dimensioned to slidably receive needle assemblies therein in axial alignment with one another.  Separator disks are disposed between adjacent needle assemblies in the holder, and an end disk is disposed between the  inserting end of  the holder and the needle assembly adjacent thereto.  The separator disks and the end disk are color coded to be readily visible through a window in the holder.  The needle assembly nearest the dispensing end can be mounted to medication delivery pen or other hypodermic syringe and may be removed from the holder.  The used needle assembly may then be inserted into the inserting end of  the holder.   This process  is  repeated for each administration of medication until the supply of needles is exhausted.  The number of needle assemblies remaining can be readily  observed  through  the  window  by  tracking  the incremental advancement of color coded separator disks.
Patent CA-2155797-C (CA)
Title: Procede de preparation de composes du type polyisocyanates aromatiques en phase gazeuse
Inventor: ARMAND JEROME
IPC: C07C265/14
Filed: 1995-08-10
Granted: 1999-11-30
Abstract: L'invention concerne un procédé de préparation de composés aromatiques substitués par au moins deux groupements isocyanates. Le procédé selon l'invention consiste à mettre en contact au moins un composé (A) comprenant au moins deux fonctions amine primaire et au moins un motif aromatique, avec du phosgène, les deux réactifs étant introduits en phase gazeuse, en présence d'un excès de phosgène, rapporté au nombre de moles de fonctions amine du composé (A), compris entre 0 et 100%. La réaction selon l'invention est mise en oeuvre dans un réacteur mixte comprenant une première zone du type parfaitement agité, correspondant à 20 à 80% du volume total du réacteur, et une seconde zone dans laquelle l'écoulement du flux y est voisin du type piston, correspondant à 80 à 20% du volume total du réacteur.
Patent CA-2156813-C (CA)
Title: Method and apparatus for reproducing digital video signals
Inventor: OIKAWA YUKA
IPC: H04N5/92
Filed: 1995-08-23
Granted: 2004-11-02
Abstract: A method and an apparatus for reproducing digital video signals in which every one-frame data of the digital video signals are recorded on n tracks of a recording medium by an inclined azimuth recording system are varying speed reproduced by a rotary head having n heads with a varying playback speed such that A = a(t.cndot.m~1)/n, where a is a constant equal to 1 or 2 and m is a constant which is an integer other than 0. A picture corresponding to the digital video signals read out with the varying playback speed S is displayed on the screen. In this manner, non-continuous lines caused by temporal difference in neighboring macro-blocks during varying speed reproduction may be rendered less obtrusive for improving the picture quality of the varying speed reproduced picture.
Patent CA-2157289-C (CA)
Title: Photochromic naphthopyran compounds
Inventor: RICKWOOD MARTIN
IPC: G03C1/73
Filed: 1994-03-25
Granted: 2005-05-24
Abstract: A naphthopyran compound of general formula (I) wherein R1 represents a group of the formula -NR2R3 wherein each of R2 and R3, which may be the same or different, independently represents an alkyl group, or a carbocyclic or heterocyclic group, or R2 and R3 taken together with the nitrogen atom to which they are attached represent a heterocyclic ring having one or more hetero atoms and which may optionally carry at least one substituent selected from alkyl, aryl, or heteroaryl groups; each of R4 and R5, which may be the same or different, independently represents an alkyl, alkenyl, carbocyclic or heterocyclic group, or R4 and R5 taken together with the carbon atom to which they are attached form a carbocyclic ring or a heterocyclic ring; and R6 represents a hydrogen atom or a substituent selected from alkyl, alkoxy, aryl, aryloxy, heteroaryl, halogen, a group of formula R1 as defined above, azo, imino, amide, carboxylate, ester, cyano, trifluoromethyl or nitro, and in addition R6 may represent a carbocyclic or heterocyclic ring fused to ring A. The naphthopytan compounds of the invention are useful as photochromic materials in lenses, e.g. sunglasses, and photochromic transparencies for cars and aircraft. The invention also provides, as new intermediate compounds, amino-substituted chloro-naphthols and amine-substituted naphthols.
Patent CA-2157751-C (CA)
Title: Star polymer viscosity index improver for lubricating oil compositions
Inventor: HANDLIN DALE LEE JR
IPC: C10M143/10
Filed: 1995-09-07
Granted: 2006-08-01
Abstract: The present invention provides star polymers which are useful as viscosity index improvers in oil compositions formulated for high performance engines. the star polymers have triblock copolymer arms of hydrogenated polyisoprene-polybutadiene-polyisoprene, which provide excellent low temperature performance in lubricating oils, and can be used in the present of low pour point depressant concentrations.
Patent CA-2158906-C (CA)
Inventor: BLOM MARCIA K
IPC: E05B65/08
Filed: 1995-09-22
Granted: 2000-06-20
Abstract: A low profile door handle having interior and exterior parts is disclosed. The interior part of the door handle comprises a body and a handle portion having upper and lower ends attached to the body. The handle portion has a top having a high area at its center and low areas at its upper and lower ends. The distance between the top of the handle portion and the body gradually and continuously decreases from the center to the upper and lower ends so that the top curves downward smoothly from the high area to the low areas. The contour of the body is similarly curved so that the door handle may be used in conjunction with horizontal blinds without interfering with operation of the blinds or creating a large bulge.
Patent CA-2160204-C (CA)
Inventor: MATSUI KOMAHARU
IPC: C09J7/02
Filed: 1995-10-10
Granted: 2003-07-29
Abstract: A paint film-protective sheet comprising a supporting substrate having  formed  thereon  a  rubber-based  pressure-sensitive layer comprising a rubber-based polymer having a low polarity and which does  not contain unsaturated bonds  or contains a small amount of unsaturated bonds, and a high-polar additive.  The paint film-protective sheet can adhere even to a paint film which is liable to cause a poor adhesion by bleeding, etc., without need of applying a cleaning treatment, can maintain the good adhered state over a long period of time, and can be easily peeled cleanly even after adhering for a long period of time.
Patent CA-2163395-C (CA)
Title: Apparatus and method for sampling signals synchronous with analog to digital converter
Inventor: BECKWITH ROBERT W
IPC: H03M1/12
Filed: 1995-11-21
Granted: 2003-01-07
Abstract: This  invention  provides  various  methods  and  techniques  for providing a  synchronous  programming of  a microcontroller  and  its associated analog to digital converter for a maximum rate of taking digital samples of alternating current analog signals which techniques are selectively combined to provide microcontroller based controls and protective relays such as for use with electric utilities.
Patent CA-2167028-C (CA)
Inventor: SHIGEOKA TETSUO
IPC: F04C29/00
Filed: 1996-01-11
Granted: 2000-10-24
Abstract: Object: In a scroll type fluid machine in which a swivel scroll (14) is driven by a drive bush (101) engaged with a drive shaft bearing portion of said swivel scroll (14) and an eccentric drive pin (25) provided eccentrically on a drive shaft (7), a concentrated surface fatigue caused on the surface of the drive bush (101) is avoided and an elongation of the life of the drive bush (101) is attained.      Construction: A rotatable cylindrical ring (102) is provided on the outer circumference of the drive bush (101).
Patent CA-2171827-C (CA)
Inventor: OLEFSKY JERROLD
IPC: C07D413/14
Filed: 1994-09-14
Granted: 2004-06-29
Abstract: Novel methods of using thiazolidinone derivatives and related antihyperglycemic agents to treat populations experiencing impaired glucose tolerance in order to prevent or delay the onset of noninsulin-dependent mellitus and complications arising therefrom are disclosed.