baber/WOPTO huggingface dataset:
Patent CA-2148998-A1 (CA)
Title: Copolymers based on ethylenically unsaturated dicarboxylic anhydrides, long-chain olefins and fluoroolefins
Inventor: BILDHAUER MICHAEL
IPC: C08F8/44
Filed: 1995-05-09
Abstract: Copoltmers based on ethylenically unsaturated dicarbox-ylic anhydrides, long-chain olefins and fluoroolefins Copolymers containing 10 to 60% by weight of bivalent structural units of the formula A                               (A) wherein R1 and R2, independently of one another, are hydrogen or C1-C6-alkyl, a and b are zero or one and a + b is one, X and Y are identical or different and are the group               -N-HR3, where R3 is C1-C40-alkyl, C3-C40-alkenyl, C5-C20-cyclo-alkyl or C6-C18-aryl, the group              -N-(R3)2, where R3 are identical or different and have the above-mentioned meaning, and/or the group                -O-R4, where R4 is hydrogen, an alkali metal cation, one equi-valent of an alkaline earth metal ion, a cation of the formula H2N?(R3)2 or H3N?R3, C1-C40-alkyl, C5-C20-cycloalkyl or C6-C18-aryl, 30 to 89% by weight of bivalent structural units of the formula B                            (B) wherein R5 is hydrogen or C1-C4-alkyl and R6 is C6-C40-alkyl or C6-C18-aryl, and 1 to 20% by weight of bivalent structural units of the formula C                                     (C) wherein n is a number from 6 to 24.            The invention also relates to a process for the prep-aration of these copolymers and to the utilization thereof.
Patent CA-2149067-A1 (CA)
Title: User-identification and verification of data integrity in a wireless communication system
Inventor: BEDNAR JOSEPH ANTON JR
IPC: H04L29/06
Filed: 1995-05-10
Abstract: The present invention discloses an apparatus and method for transmitting a data packet over a wireless network with improved security.  Each transmitted message includes three segments.  A first segment includes information identifying the originator of the message.  A second segment includes a digital signature obtained by hashing and encrypting the data to be transmitted.  A third segment includes the data packet.  Upon receiving the message, a wireless receiving unit uses the information contained in the first segment to retrieve an encryption key and, thereby, identify the originator of the message.  The wireless receiving unit then hashes and encrypts the received data packet according to the same hashing and encryption algorithms used to form the digital signature.  The resulting encrypted hashed version of the data packet is compared to the received digital signature in order to establish the integrity of the received data packet.
Patent CA-2149333-A1 (CA)
Inventor: BARTLEY TIMOTHY D
IPC: A61P7/06
Filed: 1993-11-12
Abstract: Ligands which bind to the eck receptor are disclosed. More particularly, polypeptides which bind specifically to the eck re-ceptor eck receptor binding proteins or EBPs) and DNA sequences encoding said polypeptides are disclosed. Methods of treat-ment using eck receptor ligands and soluble eck receptor and disclosed, as are pharmaceutical compositions containing same. A rapid and sensitive method for the detection of receptor binding activity in crude samples is provided.
Patent CA-2149790-A1 (CA)
Inventor: STODDART LORNE
IPC: E04H15/00
Filed: 1995-05-19
Abstract: A device for protecting sun bathers from the wind, and for adding an element of privacy to sun bathing.  The device is made up of a collapsable wall that can be set up to be less than 24" high, and a supporting means that holds the wall up.  When the wall is set up it defines an area of the surface on which it has been set up.  The wall has no top, thereby allowing the sun to shine into the entire enclosed area.
Patent CA-2151078-A1 (CA)
Inventor: ONDA KATSUMASA
IPC: H04N13/00
Filed: 1995-06-06
Abstract: A method of stereo matching and determining the disparity of stereo images with as small amount of computations as possible, and a method of measuring the disparity capable of absorbing a matching error which may occur, two right and left images are obtained by two imaging devices at imaging phase. The right and left images obtained at imaging phase have the characteristics thereof extracted respectively at characteristic extraction phase. The resulting two right and left characteristic images are matched at the subsequent stereo matching phase. At stereo matching phase, the window on one of the characteristic images providing a reference is scanned according to a predetermined scanning rule. A window providing a unit of matching is sequentially set, and matching with the other characteristic image is performed for each window thus set. Disparity determination phase divides the reference characteristic image into blocks of predetermined size, generates a histogram using the disparity obtained by matching of the window contained in each block, and determines a disparity at the histogram peak as the disparity of the particular block.
Patent CA-2151804-A1 (CA)
Inventor: ERONEN HARRI
IPC: B63B1/08
Filed: 1992-12-14
Abstract: A stern arrangement for a ship (10) when the stern of the ship is made modifiable or convertible for at least two different purposes by moving or by replacing at least a part (12, 30) of the stern. The stern of the ship (10) is convertible to be a towing notch (12) or to be equipped with a stern rolls (31). The invention provides an icebreaker which is equipped with a towing notch in wintertime and with a stem roller in the summertime for open water operations.
Patent CA-2152706-A1 (CA)
Inventor: KATBI KARL
IPC: B23B27/14
Filed: 1995-06-27
Abstract: An indexable cutting insert having a polygonal body including top and bottom surfaces connected by a peripheral wall having sides and corners.  In a generally diamond  shaped  embodiment,  opposite  corners  and  the adjacent sides form cutting edges at their junctures with the top surface, forming noses at the corners.   A chip groove formed on the top surface includes a pair of cutting faces, sloping downwardly from respective sides to a radius blend juncture aligned with the nose and bisecting the adjacent sides.  A pair of chipbreaker faces slope upward from respective ones of the cutting faces and backward from a ridge that connects the chipbreaker faces and is upwardly aligned with the juncture of the cutting faces.   The chipbreaker faces preferably have a double curvature (1) outward from the ridge and (2) upward from radius blend junctures with their adjoining cutting faces.  The upward curvature is preferably a radius that slopes upwardly at a declining rate with increasing distance from the respective cutting face junctures.  A third cutting face at the nose adjoins the side connected faces preferably at a common angle.  Various additional features are also disclosed.
Patent CA-2152809-A1 (CA)
Inventor: GILLIG STEVEN FREDERICK
IPC: H03L7/18
Filed: 1994-10-11
Abstract: An apparatus and method for operating a phase locked loop frequency synthesizer responsive to radio frequency channel spacing. The phase locked loop (PLL) frequency synthesizer (300) tunes a radio frequency transceiver (100) to a radio frequency channel. A processor (110) in the transceiver (100) determines the channel spacing of the radio frequency channels in a portion of a radio frequency band including the radio frequency channel, and controls the PLL frequency synthesizer (300) responsive to the determined channel spacing.  The present invention advantageously provides the PLL frequency synthesizer (300) with faster lock time and lower noise.
Patent CA-2153242-A1 (CA)
Title: 2-alkoxy-4-hydrazinopyrimidine compounds and their use in the preparation of 5-alkoxy-1,2-4-triazolo[4,3-c]pyrimidine-3(2h)-thione compounds
Inventor: ORVIK JON A
IPC: C07D239/46
Filed: 1994-10-31
Abstract: 5-Alkoxy-1,2,4-triazolo[4,3-c]pyrimidine-3(2H)-thione compounds (I), such as 5-ethoxy-8-fluoro-1,2-,4-triazolo[4,3-c]pyrimidine-3(2H)-thione, were prepared by cyclization of 2-alkoxy-4-hydrazinopyrimidine compounds (II), such as 2-ethoxy-5-fluoro-4-hydrazinopyrimidine, with carbon disulfide and hydrogen peroxide. The reaction can be carried out in the presence of a trialkylamine, such as triethylamine, in which case a trialkylammonium salt is obtained. The products are useful intermediates in the preparation of 5-alkoxy(1,2,4)triazolo(1,5-c)pyrimidine-2-sulfonamide herbicides.
Patent CA-2155203-A1 (CA)
Title: The bonding of bodies of refractory hard materials to carbonaceous supports
Inventor: SEKHAR JAINAGESH A
IPC: C09J1/00
Filed: 1994-03-08
Abstract: Bodies (3) such as tiles, plates, slabs or bricks of Refractory Hard Material (RHM) or other refractory composites are bonded to the cathodes or to other components, in particular to a carbon cell bottom (1), of a cell for the production of aluminium by electrolysis of a cryolite-based molten electrolyte, made of carbonaceous or other electrically conductive refractory material, by a non-reactive colloidal slurry (4) comprising particulate performed RHM in a colloidal carrier selected from colloidal alumina, colloidal yttria and colloidal ceria. The slurry usually comprises preformed particulate TiB2 in colloidal alumina. The bodies (3) are usually TiB2-Al2O3 composites.  The bonding is achieved simply by applying the slurry and allowing it to dry.
Patent CA-2155680-A1 (CA)
Inventor: JACOBSON HOWARD WAYNE
IPC: C09C1/36
Filed: 1994-02-03
Abstract: A method for preparing substantially white electroconductive powders by applying a surface coating comprising a two-dimensional network of antimony-containing tin oxide to amorphous silica or silica coated particles.
Patent CA-2157655-A1 (CA)
Title: Low-pressure chromatography column with automatically movable lid
Inventor: GUENTHER JOACHIM
IPC: B01D15/08
Filed: 1995-09-06
Abstract: The invention relates to a low-pressure chromatography column 1 having a diameter of more than 30 cm,  essen-tially consisting of a vertical cylinder 13 having a base plate 12, a lower sintered disk 3 which is arranged above the base plate 12, an upper sintered disk 16 which is fastened to the underside of a lid designed as a mobile plunger 4, wherein the low-pressure chromatography col-umn 1 has controllable elements 5 for raising or lowering the plunger 4,  which are connected to the plunger 4, wherein the controllable elements 5 are equipped with sensors 6  for  determining the  vertical  position  and horizontal placement of the plunger 4, and wherein the sensors 6 are electrically connected to a control unit 10 for the controllable elements 6. With the aid of an optical observation device  (endo-scope), the plunger/gel material can be adjusted exactly over the entire positioning range of the plunger. The advantages which can be obtained using the column are manifested, on the one hand, by simple and rapid produc-tion of the packing and,  on the other hand,  it has surprisingly been found that purer products could be obtained with such packing than hitherto. The low-pressure chromatography column according to the invention is particularly suitable for purifying insulin and precursors thereof.
Patent CA-2157931-A1 (CA)
Title: Improved vectors for gene therapy
Inventor: HODGSON CLAGUE P
IPC: A61K48/00
Filed: 1994-03-14
Abstract: Improved recombinant retrotransposon vectors for gene transfer are disclosed.  The synthetic vectors are truncated so as to reduce or altogether eliminate homologous recombination  with retroviral helper sequences found in helper cells used to propagate the vectors, making them safer for use in humans and providing more space for therapeutic genes.  The vectors transmit foreign DNA efficiently, are stable, enable abundant RNA expression from the retrotransposon transcriptional promoter, and through their diversity permit many useful applications in therapeutics and transgenics.  Methods are described for rescuing tissue-specifics obtaining expression in primary cells, mapping the genome and other techniques of therapeutic and transgenic utility.
Patent CA-2163254-A1 (CA)
Title: Lifting device for a stand-up wheelchair and wheelchair using same
Inventor: BOBICHON GERARD
IPC: A61G5/14
Filed: 1995-03-17
Abstract: A wheel chair with a lifting device characterised in that the seat and the foot rest are separately mounted at the upper ends of two adjustable quadrilateral assemblies (23, 42) extending upwards from the frame and having a common movable portion (26), and in that the up-down control system (50) includes a drive unit arranged between the frame and one of the movable members of one of the quadrilateral assemblies for controlling the movement of said quadrilateral assemblies between a stable collapsed position and a stable deployed position. The device is useful in stand-up wheelchairs.
Patent CA-2164540-A1 (CA)
Title: Electrode Structure and Electric Heater Comprising the Same
Inventor: HASHIMOTO SHIGEHARU
IPC: F01N13/02
Filed: 1995-12-06
Abstract: An electrode structure includes: a metallic electrode; a case for accommodating and holding the electrode, and one end of a lead wire connecting to the electrode; and an insulating member interposed between the electrode and the case in order to ensure insulation between the electrode and the case, in which structure a waterproof member is interposed between the case and the lead wire in order to prevent the incoming of water from between the case and the lead wire,  and an electric heater havinging the above electrode structure.  An electrode structure of an electric heater, includes:  a first electrode; a second electrode of a cylinder shape, having a base portion connected with the first electrode and a top end portion connected with a lead wire; an insulating member having a thermal resistance, pierced by the second electrode; an elastic insulator having a thermal resistance, covering at least a portion of the second electrode;  a case for accommodating and holding the second electrode, having a predetermined length L; and a rubber sealing member attached to the top end of the case.   The electrode structure is preferably used by connecting to a conductive substance  accommodated  in  a  metallic  housing,  to  apply electricity  to  the conductive  substance.    The  conductive substance is preferably a metallic honeycomb structure.   The given length L mentioned above is preferably L40 mm.
Patent CA-2168293-A1 (CA)
Title: Pneumatic tire having improved pitch sequencing
Inventor: WESOLOWSKI PIOTR JANUSZ
IPC: B60C11/00
Filed: 1996-01-29
Abstract: The present invention relates to a pneumatic tire having a tread with a plurality of load-supporting elements placed above the circumference of the tire. The tread is characterized by a pitch sequence comprising (a)  from 67 to 103 total pitches; (b)  only four or five different pitch lengths; (c) a ratio of the longest pitch to the shortest pitch length not to exceed 1.58;    (d)  a ratio of the longer pitch length to the shorter pitch length of any two pitches which precede or follow each other not to exceed 1.43;      (e)  there being no instance in the pitch sequence where the shortest pitch length directly precedes or directly follows the longest pitch length;      (f)  there being a constant increment in pitch length in the four or five different pitch lengths as one progresses from the shortest pitch length to the longest pitch length.
Patent CA-2170080-A1 (CA)
Title: Flow regulation in gas chromatograph
Inventor: HINSHAW JOHN V
IPC: G01N30/86
Filed: 1996-02-22
Abstract: A gas chromatographic system includes a column and an injector for delivering into the column a test portion of flow. The injector has an exit passage for discharging a split portion of carrier flow. A flow controller for regulating the inlet flow rate includes a variable outlet restrictor for the split portion, a flow rate detector disposed to detect inlet flow rate, and a feedback flow controller to regulate the outlet restrictor to maintain the inlet flow rate substantially constant. Pressure at the inlet to the injector is regulated by detecting pressure at an outlet and providing feedback control to an inlet restrictor.      An integral module for the gas components is used on each side of the injector. Calibration and correction for gas characteristics are provided in the feedback for a chromatographic system and for other flow controller regulation.
Patent CA-2170191-A1 (CA)
Inventor: GALL ALLEN M
IPC: E04C5/16
Filed: 1996-02-23
Abstract: A sheet metal spring clip made from a resilient metal rectangular  strip  which  is  bent  at  various  locations intermediate its top and bottom edges to cause sections of the clip to lie one above the other in a spaced relationship. The clip has a pair of connected elongated apertures each having unbroken walls normal to flat top and bottom surfaces, which walls serve as bearing surfaces at opposite sides of each of the two connected apertures for mounting of the clip preferably on a vertical support.   Spaced handles similarly directed permit the resilient  clip to be  squeezed for positional alignment on the support.  The clip further includes an edge slot in communication with a third elongated aperture, which aperture has similar walls and serves to provide bearing surfaces for retention of a bar normally disposed with respect to the support, after the clip has been positioned at a desired elevation.
Patent CA-2173121-A1 (CA)
Title: Split back chair
Inventor: FAIKS FREDERICK S
IPC: A47C3/025
Filed: 1993-10-04
Abstract: A chair (10) with independent control of a lumbar portion of a seat back (18) and a thoracic portion (32) of the seat back, has a seat (14) connected with a base (12) and a control (16) connected with the base, generally under the seat. A first support (76). pivotally connected with the control, extends from the control to the thoracic portion (32) of the seat back. The two supports operate independently and the thoracic and lumbar portions of the seat back rotate independently rearward with respect to the seat (14), providing sympathetic back support for a user. The thoracic portion may rotate laterally to follow twisting movements of a user's thoracic region. The lumbar portion may be connected with the second support to limit lateral rotation of the lumbar portion.
Patent CA-2173400-A1 (CA)
Title: Concrete molding form member connector
Inventor: HAYAKAWA YOSHIYUKI
IPC: E04G17/04
Filed: 1996-04-03
Abstract: A concrete molding form member connector comprises a first holding portion having a linearly extending first holding surface of a prescribed length, a cylindrical insertional shaft portion, having a central axis being perpendicular to the first holding surface, which is provided in the vicinity of a first end of the first holding surface, and a second holding portion, having a second holding surface being opposed to the first holding surface in a parallel manner at a prescribed space in a region close to a second end of the first holding surface, which is continuous with the first holding portion on the second end of the first holding surface so that its free end is positioned at a prescribed space with respect to the insertional shaft portion.  The insertional shaft portion is inserted in through holes which are provided in overlapping side plate portions of adjacent form members so that the connector is rotated about the same, whereby the side plate portions of the adjacent form members are held between the first holding surface and the second holding surface.  Consequently, a lightweight concrete molding form member connector having excellent workability, which can be provided at a relatively low cost, is provided.
Patent CA-2177989-A1 (CA)
Title: Slip track assembly
Inventor: BECKER DUANE WM
IPC: E04B2/74
Filed: 1994-12-02
Abstract: A slip track  assembly having a slip track (12) and a  non-combustible secondary wall member (22)  which together are fastened to an overhead roof structure (14) and slidingly  bearing stud wall  (16)   so  as  to provide a desired fire barrier connection.
Patent CA-2178996-A1 (CA)
Inventor: KARRER PHILIPPE
IPC: C08G77/42
Filed: 1996-06-14
Abstract: L'invention concerne des polyorganosiloxanes linéaires, cycliques ou ramifiés ayant par molécule au moins trois motifs siloxyles dont au moins un motif fonctionnel de formule: <IMG> où R1 représente un radical alkyle en C1 à C4 ou phényle, X renferme une fonction amine cyclique secondaire ou tertiaire, liée au silicium par une liaison Si-A-C où A est un reste comprenant un groupe acétal cyclique. X représente plus précisément un groupe monovalent de formule: <IMG> (II) où: R2 est H ou un radical alkyle; Z est un radical trivalent de nature aliphatique, comme par exemple le radical -CO-CH-CO-, ou de nature aromatique, comme par exemple le radical <IMG>; R3 à R6 sont des radicaux alkyle, phényle et/ou benzyle; R7 est H ou un radical alkyle, alkylcarbonyle, phényle ou benzyle; x = 0, 1, 2 ou 3; y = 0 ou 1, et a = 0, 1 ou 2. L'invention concerne également l'utilisation de pareils polyorganosiloxanes dans les polymères pour améliorer notamment leur photostabilisation.
Patent CA-2179272-A1 (CA)
Title: Charnieres pour des materiaux composites contenant une fraction elevee de charge minerale
Inventor: HODSON SIMON K
IPC: C04B22/04
Filed: 1995-01-03
Abstract: On fournit une charnière destinée à des matériaux composites contenant une charge minérale. La charnière a une matrice structurelle à charge minérale, contenant un liant organique polymère qui peut se disperser dans l'eau, une charge minérale et un matériau fibreux. La charnière permet de plier les matériaux à charge minérale le long d'une ligne sans que le matériau ne casse. La charnière est formée de préférence en entaillant une feuille de matériau (50) contenant une charge minérale. La charnière est particulièrement utile pour des récipients où il faut plier différentes parties, comme par exemple pour les récipients et les boîtes destinés à des aliments, faits en des matériaux contenant une charge minérale.
Patent CA-2180712-A1 (CA)
Inventor: DEGELMANN PAUL G
IPC: F21V13/10
Filed: 1996-07-08
Abstract: The lighting fixture according to the invention includes a fixture housing having a longitudinal axis and means for supporting a fluorescent lamp in the housing.  Side reflectors are provided which extend parallel to the longitudinal axis of the housing on either side of the lamp.  A plurality of cross vanes and two end vanes are positioned below and perpendicular to the longitudinal axis of the lamp.  Each cross vane has a top surface of a generally V-shaped configuration and reflector surfaces extending from the top surface. The reflector surfaces are concavely curved with a radius of curvature which varies along the width of the cross vane.  The end vanes also include a generally V-shaped top surface and one reflector surface with is concavely curved with a radius of curvature which varies along the width of the end vane.  The cross vanes and end vanes according to the invention confine substantially all of the light to within the preferred RP-24 cut-off zone and prevent unnecessary reflections which lower efficiency.
Patent CA-2182067-A1 (CA)
Title: Golf club metallic head formation
Inventor: SCHMIDT GLENN H
IPC: B22C9/04
Filed: 1996-07-25
Abstract: In the method of forming a hollow metallic golf club head having wall structure defining a front wall, a heel, a toe, a rear wall, a sole, and a top wall, the steps that include providing a wax shell covered pre-formed core body, the thickness of the wax shell corresponding to the desired thickness of the wall structure, forming a ceramic shell about the wax shell; removing the wax shell by melting the wax, thereby to form an opened gap between the ceramic shell and the core body, and casting molten metal into the opened gap, thereby to form the wall structure extending about the core body and at the sole, while forming and maintaining port structure through the wall structure and spaced from the sole, and allowing the wall structure to solidify to form the head; removing the ceramic shell from the wall structure, and removing the core body from the interior of the solidified head, and via the port structure.