baber/WOPTO huggingface dataset:
Patent CA-2159577-A1 (CA)
Title: Fixed cellular terminal for two-wire telecommunications services
Inventor: MORCILLO MARTINEZ ANTONIO JAVI
IPC: H04M1/58
Filed: 1995-09-29
Abstract: For access to a GSM type mobile communications network and provision of basic telecommunications services to a telephone terminal (TT) connected to it.      It is derived from a GSM mobile cellular terminal with a line interface that consists of a two-wire conversion circuit (H) connected to the transmit path (TP) and the receive path (RP), and to the subscriber line to which the telephone terminal (TT) is connected, and thereby perform a four-to-two wire conversion. It also comprises an echo suppressor (ES) that precedes the two-wire conversion circuit (H), consisting of two signal aHenuators (ATT1,ATT2) inserted in the transmit and receive paths and activated by means of an attenuation control module (ATTC) that receives the two signals coming from the voice activity detector and from the silence descriptor frame detector present in GSM type cellular terminals.
Patent CA-2162068-A1 (CA)
Inventor: CYR GREGORY JOHN
IPC: H04Q11/04
Filed: 1995-11-03
Abstract: First multiplexers have inputs connected to communication channels which carry inbound digital words.  The output of each of the first multiplexers is coupled to a control buffer that has its output connected to a data input of a random access memory (RAM) of M columns and N rows.  The RAM is capable of concurrently storing a digital word entered on each of its data inputs during each clock cycle.  During a clock cycle each control buffer: (a) stores an associated inbound word received from a first multiplexer,  (b) transmits the associated inbound word to a respective input of the RAM, or (c) does both (a) and (b).  The control buffer operates to cause each column in the RAM to be completely filled with inbound words before another column in the RAM receives any inbound words.          The packing of the RAM to avoid empty or "fill" cells makes the reading or withdrawing of information straightforward.
Patent CA-2162394-A1 (CA)
Inventor: MATSUDA TAKEHISA
IPC: G02B1/04
Filed: 1995-03-14
Abstract: The present invention provides semi-spherical materials to be worn on the eyeball, such as contact lenses for visual acuity correction or medical treatment use, cornea protecting materials, controlled drug release contact lenses and the like, which comprise, as a main component, a existing in the living body as an extracellular matrix component of connective tissues and satisfy various requirements such as a dimensional stability, transparency, surface water wettability, tissue compatibility, oxygen permeability and the like. In other words, the material to be worn on the eyeball has a shape of semi-spherical surface compatible in shape with the mammalian eyeball and has biological and surface-physical compatibilities with ophthalmic tissues and comprises, as a main component, a substantially transparent photocured crosslinked-glycosaminoglycan obtained by allowing photoreactive groups covalently bonded to a glycosaminoglycan to crosslink mutually by photoirradiation.
Patent CA-2165262-A1 (CA)
Title: Multiple emitters laser diode assembly with graded-index fiber microlens
Inventor: LABRANCHE BRUNO
IPC: H01S5/40
Filed: 1995-12-14
Abstract: The  multiple  emitters  laser  diode  assembly comprises a laser diode bar for emitting a laser beam. The laser diode bar comprises a plurality of emitters aligned with respect to each other in a same plane of emission. A graded-index elongated fiber microlens is transversely set at a given distance in front of the laser diode bar for controlling the divergence of the beam.   The  microlens   has   an  axis  of   symmetry substantially intersecting the optical axis of  each emitter.  A  mount  is  provided  for  positioning  the microlens  with  respect  to  the  laser  diode  bar. Alternatively, the assembly may comprise a laser diode array for emitting the beam.  The laser diode array comprises a plurality of substantially parallel rows of emitters with a substantially regular period between them.  An  array  of  graded-index  elongated  fiber microlenses is positioned substantially parallel to the rows. Each microlens corresponds to one of the rows for collimating the beam generated thereby. The GRIN fiber microlens shows less alignment sensitivity than ordinary fiber lens or aspherical fiber lens when used in a multiple emitters laser diode assembly. The GRIN lens further has the advantage of collimating a laser diode bar  or  array with  a  high degree  of  quality while minimizing  phase  aberration  and  distortion in  the collimated transmitted beam.
Patent CA-2168576-A1 (CA)
Title: Advertising display method and apparatus
Inventor: BRONAUGH WILLIAM R
IPC: G09F11/00
Filed: 1994-08-29
Abstract: A display apparatus (10) having a transparent image screen (24) which contains a mosaic of four discrete images formed from pixels which are interwoven in a predetermined arrangement such that each of the images are selected by precise positioning of the screen (24) in four different positions relative to a grid mask (26) which masks out all but pixels of a selected image. A platen structure (20) mounts the image screen (24) and is moveable through a precise pattern for selecting the pixels, and thereby the image, to be projected. A pair of arms (30, 32) are coupled to the platen (20) and an eccentric drive (86) and are driven by the eccentric drive (86) to advance the platen (20) positively through the pattern.
Patent CA-2169196-A1 (CA)
Inventor: NICKS DONALD ALVIN
IPC: A42B3/10
Filed: 1996-04-04
Abstract: This invention relates to the absorption of sweat from the head while wearing a safety helmet.
Patent CA-2172178-A1 (CA)
Title: Method for improving heat resistance of pvc
Inventor: VUILLEMIN BRUNO
IPC: C08L33/04
Filed: 1996-03-20
Abstract: New thermoplastic PVC compsns. comprising in addn. to PVC,heat resistant and shock resistant additives the heat resistant additive is a syndiotactic polymethyl methacrylate polymer with a degree of tacticity of at least 70%. Pref. the compsn. contains 30-99% PVC,1-70% of syndiotactic PMMA, and 1-30% of the anti-shock additive.
Patent CA-2172346-A1 (CA)
Inventor: TYNDORF TADEUSZ A
IPC: G01N1/28
Filed: 1996-03-21
Abstract: The present invention is a culture slide assembly having a base member, a cooperable receptacle chamber removably attached to the base and means for separating the chamber from the base. Preferably, the assembly may be used for carrying out biological reactions or growth therein, such as growing tissue or cell cultures.
Patent CA-2178662-A1 (CA)
Inventor: CHERPECK RICHARD E
IPC: C08G63/91
Filed: 1996-06-10
Abstract: Polyoxyalkylene polylactone aminocarbamates having the formula:                       (I) wherein R1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the compound soluble in hydrocarbons boiling in the gasoline or diesel fuel range;            R2 and R3 are each independently hydrogen or lower alkyl having about 1 to about 6 carbon atoms and each R2 and R3 is independently selected in each -O-CHR2-CHR3- unit;            R4 is an alkylene group of about 2 to about 5 carbon atoms;        A is a polyamine moiety having at least one basic nitrogen atom;   x is an integer from about 1 to about 100; and y is an integer from about 1 to about 25.            The polyoxyalkylene polylactone aminocarbamates of formula I are useful as fuel additives for the prevention and control of engine deposits.
Patent CA-2178699-A1 (CA)
Title: Process for the production of dinitrotoluene and isomeric mixtures of dinitrotoluene
Inventor: KLINGLER UWE
IPC: C07C205/06
Filed: 1996-06-10
Abstract: Dinitrotoluene and isomer mixtures of dinitrotoluene are produced in a single stage, continuous process by nitrating mononitrotuluene or an isomer mixture of mononitrotoluene in which the ortho-mononitrotoluene content is low with a nitrating acid made up of (1) from about 80 to about 100 wt.% inorganic constituents and (2) up to 20 wt.% organic constituents. The inorganic constituents of the nitrating acid include: (a) from about 60 to about 90 wt.% sulfuric acid, (b) from about 1 to about 20 wt.% nitric acid, and (c) at least 5 wt.% water. The organic constituents of the nitrating acid include: from about 70 to about 100 % by weight nitrotoluene isomers and up to about 30% by weight nitration by-products. The nitration reaction is carried out under adiabatic conditions. The molar ratio of nitric acid to mononitrotoluene during the nitration reaction is generally from about 0.7:1 to about 1.4:1. The phases generated during the nitration are subsequently separated and the acid phase is treated to remove at least 5 wt.% of the water present therein. The water may be removed by distillation or flash vaporization, optionally with simultaneous heat supply. After removal of the water, nitric acid having a concentration of from about 50 to about 100 wt.% is added to the treated acid phase in amount sufficient to satisfy the compositional limits for a nitrating acid useful in the process of the present invention. This reconcentrated acid phase is then returned to the nitration reaction.
Patent CA-2178917-A1 (CA)
Title: Atm networks for narrow band communications
Inventor: HILLER THOMAS LLOYD
IPC: H04Q3/00
Filed: 1994-03-01
Abstract: Pulse Code Modulations (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmissions across a telecommunications network.  Each cell carries one PCM sample of up to 48 different voice connections, the voice connections being selected from the PCM data streams because they have a common destination.  The cells are transmitted over ATM virtual paths, each path transmitting one cell every 125 µs.  The ATM signals are switched by units for switching cells (cell switching), while keeping their payload contents intact, and by units for switching the signals for individual voice connections between cells of an ATM signal (cell remapping).  Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering.  Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtuals paths.  Advantageously, large telecommunication  networks can be implemented using a small number of switching units.  Advantageously, a central communications network comprising stages of cell remapping interconnected by one or more stages of cell switching provides flexibility for interconnecting large access switched; the cell remapping stage may be made part of the access switch. Advantageously,  an access switch comprising a cell mapping or distribution stage for assembling cells comprising PCM samples headed for a common output of the access switch are switched in a cell switch to a cell remap unit for collecting PCM samples headed for a common destination into individual cells of an ATM output stream, provides output signals that can be readily and efficiently switched by a transit network for distribution to other access switches of a large network.  Advantageously, such a cell remap unit provides a key element to the implementation of an efficient large ATM voice network.  For use with PCM switches, it is desirable to provide supervisory signals accompanying the PCM data.  Advantageously, this arrangement permits supervisory signals to be passed within an access switch thus simplifying compatibility with existing switching systems.
Patent CA-2181382-A1 (CA)
Title: Process and device for coextruding two materials at different temperatures
Inventor: BALLU GUERRIC
IPC: B29C48/10
Filed: 1996-07-16
Abstract: Method of coextrusion of at least two materials having very different extrusion temps. involves passing these material sequentially or simultaneously through a device having one orifice. The device comprises heat transfer tubes (C). Also claimed is the resultant coextruded product.
Patent CA-2183568-A1 (CA)
Inventor: DUVE HANNE
IPC: A01N63/50
Filed: 1995-03-09
Abstract: De nouveaux peptides isolés de la lucilie Calliphora vomitoria sont apparentés à la classe des allatostatines des neuropeptides d'insectes, et inhibent la motilité du tube digestif de la lucilie C. vomitoria tout en produisant des effets allatostatiques chez les blattes de l'espèce Diploptera punctata et Periplaneta americana. Ces peptides comprennent de nouvelles séquences contenant des restes hydroxyproline et des groupes amides C-terminaux qui leur confèrent une stabilité améliorée dans le tube digestif des insectes.
Patent CA-2185754-A1 (CA)
Title: Digital image decoding apparatus
Inventor: ASAI KOHTARO
IPC: H04N19/625
Filed: 1996-09-17
Abstract: Data which has been decoded by a decoding portion 101 are compressed by a compressing portion 102 and stored in a prediction / display frame memory portion 103.  From the data stored in the prediction / display frame memory portion 103, any data required for decoding other frames in the decoding portion 101 are decompressed through a decompressing A portion 104 and supplied to the decoding portion 101.  Alternatively, data to be displayed is read from the prediction / display frame memory portion 103, decompressed at a decompressing B portion 105 and supplied to a display apparatus.  Writing to and reading from the above-mentioned prediction / display frame memory portion 103 is controlled by an address controlling portion 106.  Since compressed data are stored in the prediction / display frame memory portion 103, the memory capacity can be decreased.
Patent CA-2186070-A1 (CA)
Title: Container inspection with field programmable gate array logic
Inventor: JUVINALL JOHN W
IPC: G01N21/90
Filed: 1996-09-20
Abstract: In a system for inspecting containers, a container is held in stationary position and rotated about its axis.      Light energy is directed onto the container as it is rotated, and a camera obtains an image of the container illuminated by the light energy. The container image, consisting of a plurality of pixel data bytes each forming a portion of the image, is directed serially and in sequence to a programmable logic device, in which an array of hardware logic elements is configured such that the elements of the array operate on a plurality of sequential pixel data bytes simultaneously and in real time.      The pixel data is analyzed to obtain inspection information as a function of optical characteristics of the container. [DS-71/RCC]
Patent CA-2189752-A1 (CA)
Title: Granular detergent composition containing admixed fatty alcohols for improved cold water solubility
Inventor: STEARNS CHARLES LOUIS
IPC: C11D3/20
Filed: 1995-04-17
Abstract: A granular detergent composition having improved solubility or dispersability in laundering solutions is provided. The detergent composition contains from about 1 % to about 75 % of a detersive surfactant, from about 1 % to about 90 % of a detergency builder, and an effective amount of a fatty alcohol having a melting point of from about 6 °C to about 70 °C to improve the solubility of the composition in an aqueous laundering solution.
Patent CA-2190579-A1 (CA)
Inventor: BROEKHUIJSEN JEROME A
IPC: G06T11/80
Filed: 1996-03-22
Abstract: A method and apparatus for creating a curve to be displayed on an output device operates to interactively and directly specify the curve from input signals generated by an input device in response to control by a user. An apparatus may include an input device having a pointer for inputting points along a path-defined curve specified directly (using actual input points intended to be approximately on the curve) by a user. A processor outputs to an output device certain rendering data for rendering an image of the curve in real time for feeding back to a user. The user may augment (edit, extend) the curve by moving the pointer to add input points to the curve, based on the image fed back. The apparatus and method map non-linear coefficients of dependent control variables onto "building variables" selected to combine in linear combinations to replace the non-linear coefficients. When new inputs are added, building variables are linearly transformed to new values, rather than being recalculated from original non-linear summation terms. The curve is rendered on an output device and fed back immediately to a user in real time as the user adapts the curve displayed by moving the pointer to add inputs.
Patent CA-2191820-A1 (CA)
Inventor: KINCAID JEFFREY
IPC: F16F1/38
Filed: 1996-12-02
Abstract: A pitman arm incorporates a preloaded pivot joint that has a stud that rotates and angulates.  The preloaded pivot joint is designed so that different internal  components transfer the  respective  lateral loads, axial compression loads and angulation loads of the stud.
Patent CA-2191943-A1 (CA)
Title: Hollow guide wire apparatus for catheters
Inventor: JACOBSEN STEPHEN C
IPC: A61M25/09
Filed: 1996-12-03
Abstract: A catheter guide wire includes an elongate tubular body about which a catheter may be threaded for guidance to a target location in a vasculature passageway of a body.  The elongate body includes a proximal end and a distal end, with the distal end being curved.  Cuts are formed either by saw-cutting, laser cutting or etching at spaced-apart locations along the length of the body to increase its lateral flexibility, while maintaining its rotational torquability.  At least some of the cuts extend through the tubular body to the interior cavity to allow the escape of fluids flowing in the cavity. The distal end of the tubular body includes a sufficient number  of  cuts  to  make  it  more  flexible  than  the remainder of the body.
Patent CA-2193184-A1 (CA)
Title: Recirculation of a lower alkyldisulphide in a well
Inventor: CLARK PETER DAVID
IPC: E21B43/22
Filed: 1996-12-17
Abstract: A method and system are provided for recirculation of lower alkyldisulphide, such as dimethyldisulphide (DMDS), in a well in which a hydrogen sulphide and sulphur containing fluid is,produced. The method and system are based on the insight that a lower alkyldisulphide reacts with the produced hydrogen sulphide and thereby decomposes into a lower alkanethiol and that the lower alkyldisulphide can be regenerated by selectively separating the hydrogen sulphide from the thus produced lower alkanethiol.
Patent CA-2201872-A1 (CA)
Inventor: LEVINE HOWARD LESLIE
IPC: A61P31/00
Filed: 1995-10-06
Abstract: La présente invention se rapporte à une composition comprenant une formulation de polymère d'acide polycarboxylique réticulé et bio-adhésif, ainsi qu'à l'utilisation de cette composition, laquelle permet d'utiliser des doses relativement faibles d'agents agissant contre les maladies sexuellement transmissibles (MST), tels que N-9, pour prévenir de telles maladies sans entraîner les irritations des tissus génitaux qui accompagnent fréquemment l'application de doses plus élevées des agents anti-MST. Le polymère bio-adhésif permet de maintenir un contact considérablement prolongé et plus important entre l'agent anti-MST et l'agent infectieux, ce qui permet à l'agent anti-MST d'agir plus longuement, et en une plus faible concentration, contre l'agent infectieux, par opposition aux formulations commerciales contenant du N-9 actuellement disponibles. Un tel système d'apport permettra de réduire de manière sûre, et sans irritations, le risque d'infection par les MST, y compris le VIH.
Patent CA-2203665-A1 (CA)
Title: Optically clear polymer compositions containing an interpenetrant
Inventor: NEIDLINGER HERMANN H
IPC: C08F251/02
Filed: 1995-10-12
Abstract: Disclosed are optically clear xerogel polymer compositions containing an interpenetrant.
Patent CA-2204250-A1 (CA)
Title: Injection compression molding method and apparatus
Inventor: NOGAWA MAKOTO
IPC: B29C45/16
Filed: 1995-11-27
Abstract: An injection compression molding method and an apparatus therefor capable of obtaining a multilayer molded product of a high strength by a simple structure rapidly and with a high accuracy. A molding method for attaining such characteristics includes the steps of extending an injected molten resin (51) by compressing the same in metal molds (31, 32), opening the metal molds during or after the execution operation, injecting a surface layer material (60) into a gap .delta. occurring between the metal molds (31, 32) and resin (51) when the molds are opened, closing the metal molds during or after the injection of the surface layer material, and cooling the resin (51) and surface layer material (60) in the closed metal molds (31, 32).
Patent CA-2204506-A1 (CA)
Title: Discharge valve
Inventor: FROST DOUGLAS ROBERT DAVID
IPC: E03D1/34
Filed: 1995-10-23
Abstract: The invention provides an improved discharge valve comprising an upper housing (5, 101, 106), an upwardly movable main valve assembly (35) within the housing and forming with the upper part thereof a variable volume upper chamber (6), a restricted passage (9) between the upper chamber (6) and the exterior thereof, an outlet (19) leading down from the lower part of the housing, a seat (13) for the main valve assembly at the entry to the outlet (19) so that, in the lowered position of the main valve assembly, the outlet is blocked against ingress of fluid in which the device is immersed, and a pilot valve (2, 54, 92) actuable remotely from the housing (5, 101, 106) to put the upper chamber (6) in free communication with the outlet (19), the arrangement being such that, on such free communication being established, fluid escapes the upper chamber (6) and the change in relative pressures above and below the main valve assembly (35) causes the latter to unseat thereby permitting flow of the immersing fluid into the outlet (19) and its substantially complete discharge, the cessation of flow of the immersing fluid allows the main valve assembly (35) to revert to its seated position with the pilot valve (2, 54, 92) cutting off said free communication, and air penetrates the upper chamber (6) and on replenishment of immersing fluid a net downward pressure is created on the main valve assembly (35) to keep it seated, and wherein the pilot valve (2, 54, 92) has a hollow stem (2, 54, 92) communicating to atmosphere above the normal full set level (23) of fluid in the cistern (1), the main valve assembly (35) and the hollow stem (2, 54, 92) defining therebetween a hollow annulus (16).
Patent CA-2204538-A1 (CA)
Title: Latch arrangement for air filter housing
Inventor: ANOSZKO THOMAS J
IPC: B01D46/42
Filed: 1997-05-05
Abstract: A one-piece framework for holding the filter media of an air filter includes a pair of end walls integrally connected to a pair of frame members by a living hinge so that they may be pivotally moved between an assembled position and an unassembled position. A pair of sidewalls are integrally connected to the frame members by a living hinge only at their outermost ends so that they, too, may be pivotally moved between their assembled and unassembled position. Each of either of the sidewalls or end walls is provided with a tab-type latch which includes a button undercut at least a peripheral portion thereof. Each of the other sidewalls or end walls has an opening formed therethrough. The opening is defined by a wall shaped in accordance with and frictionally surrounding the undercut button in a snap-fit to hold the sidewalls to the end walls in an assembled state.