baber/WOPTO huggingface dataset:
Patent CA-2092156-C (CA)
Title: Optical amplifier with improved linearity
Inventor: TIEMEIJER LUKAS FREDERICK
IPC: H04B10/572
Filed: 1993-03-22
Granted: 2004-03-02
Abstract: Optical amplifier which utilizes a solid-state laser (2) as an amplifying element. To improve the linearity of the optical amplifier a complex compensation mechanism has been necessary in the state of the art. In the optical amplifier according to the invention a similar linearity improvement may be achieved by feeding the solid-state laser (2) not from a current source, as is customary, but from a voltage source (4).
Patent CA-2095403-C (CA)
Title: Yoke for coupling railway cars utilizing a drawbar assembly
Inventor: MAUTINO PETER SCOTT
IPC: B61G9/20
Filed: 1993-05-03
Granted: 1999-09-28
Abstract: A railway car yoke having a rear end portion, a body portion, a top forward portion and a bottom forward portion. Each of the top forward portion and the bottom forward portion include a thickened portion through which one aperture is formed to receive a connecting pin therein. A bottom strap portion of such body portion includes an aperture therein to enable adjustment of a blockout device contained within such yoke.
Patent CA-2100428-C (CA)
Title: Structure de fuselage pour helicoptere
Inventor: BIETENHADER CLAUDE
IPC: B64C27/00
Filed: 1993-07-13
Granted: 2002-02-05
Abstract: - L'invention concerne un fuselage d'hélicoptère du type comportant une structure centrale à laquelle sont reliés une structure avant, une structure arrière et un train d'atterrissage, et qui supporte une boîte de transmission, un rotor principal et au moins un moteur (50), et du type dans lequel la structure centrale comporte une ossature (16) munie d'éléments d'habillage qui définissent 1a forme extérieure du fuselage. - Selon l'invention, l'ossature (16) de la structure centrale présente sensiblement la forme d'un hexaèdre régulier constitué de panneaux d'ossature (28, 30, 32, 34, 36, 38) assemblés entre eux. - L'invention trouve notamment à s'appliquer pour la réalisation d'hélicoptères légers.
Patent CA-2106388-C (CA)
Inventor: ANTRIM RICHARD L
IPC: C12P19/14
Filed: 1992-03-26
Granted: 2002-09-24
Abstract: A starch-slurry is liquified with alpha-amylase to produce fructose by a process wherein carbonate ion in excess of an amount needed to adjust the pH to about 5.0 to 6.0 is added to the slurry and the pH of the slurry is adjusted to about 5.0 to 6Ø The excess amount is preferably about 2mM to 20mM. This process enables obtaining consistent and complete liquefaction.
Patent CA-2111793-C (CA)
Title: Electrolytic process for extracting platinum of high purity from contaminated platinum
Inventor: HERRMANN SIGRID
IPC: C25B1/00
Filed: 1993-12-17
Granted: 2003-05-13
Abstract: Disclosed is electrolytic process for obtaining platinum having a high purity from a concentrated hydrochloric acid solution of contaminated platinum containing noble and base metal impurities, the process comprising the steps of a) providing an electrolysis cell comprising an anode compartment containing an anode and the concentrated hydrochloric acid solution of the contaminated platinum as anolyte and a cathode compartment containing a cathode and a 6 to 8 N hydrochloric acid solution as catholyte, the anode compartment being divided from the cathode compartment in the electrolysis cell by a can on exchanger membrane, b) electrolyzing the hydrochloric acid solution of the contaminated platinum in the electrolysis cell under voltage-controlled conditions by applying a voltage of from 2.5 V to 8 V across the anode and the cathode at a current density of from 0.3 to 12.5 A/dm2 to form a refined platinum-containing solution and a platinum alloy metal deposit, c) recovering the platinum alloy metal deposit, and d) obtaining the platinum of high purity from the refined platinum-containing solution.
Patent CA-2116659-C (CA)
Title: Apparatus for filtering and extruding synthetic plastic scrap material
Inventor: BACHER HELMUT
IPC: B29C48/355
Filed: 1992-08-06
Granted: 1995-11-14
Abstract: An apparatus for filtering and extruding plastic scrap consists of an extruder housing having an interior chamber and an extruder worm received and supported for axial rotation in the chamber.  The extruder worm includes a centrally located set of return threads which divide the chamber into first and second chamber portions.  The housing further includes an intake opening in the first chamber portion for receiving raw material, an exit opening in the second chamber portion for discharging filtered material, and a degassing opening in the second chamber portion for discharging gases from the chamber.  A drive mechanism is provided for rotating the extruder worm.  A filter channel connects the first and second chamber portions wherein the plastic material passes from the first chamber portion to the second chamber portion through the channel.  The channel has an inlet opening in the first chamber portion and an outlet opening in the second chamber portion.  The degassing opening is preferably located between the outlet opening of the channel and the exit opening of the chamber.  A filter is disposed in the channel for filtering the plastic material as it passes therethrough.  The extruder worm has a thread geometry in the second chamber portion which creates a no-pressure zone therein.  The no-pressure zone is preferably located between first and second ends of said second chamber portion.
Patent CA-2121830-C (CA)
Title: Holographic enhancement of card security
Inventor: COLGATE GILBERT JR
IPC: G06K19/14
Filed: 1994-04-21
Granted: 1999-02-23
Abstract: An enhanced card security system wherein an optically readable portion is incorporated into the magnetic machine readable stripe on the card.   The optically readable portion can  include a holographic representation of a bar code or other conventionally known optical digit generator.   The machine read magnetic and optical check digit information is converted into electrical pulses which either combine in accordance with information carried by a central card authentication center, in which instance transaction approval is provided,  or the separately readable magnetic and optical information does not combine and transaction approval is denied.
Patent CA-2122770-C (CA)
Title: Carbonaceous host compounds and use as anodes in rechargeable batteries
Inventor: DAHN JEFFERY RAYMOND
IPC: H01M10/0525
Filed: 1994-05-03
Granted: 2000-10-03
Abstract: Carbonaceous compounds and methods for preparation are  described  wherein  the  compounds  comprise  a  pre-graphitic   carbonaceous   host having   organized   and disorganized regions and wherein atoms of other elements are incorporated in the host without changing the structure of  the  organized  regions.    A  carbonaceous  insertion compound with large reversible capacity for lithium can be prepared using elements capable of alloying with lithium, such as Si, as the incorporated atoms.   These insertion compounds are suitable for use as high capacity anodes in lithium ion batteries.
Patent CA-2123673-C (CA)
Title: Soft segment-containing modified epoxy resin and cathodic electrodeposition paints containing same
Inventor: YAMADA MITSUO
IPC: C09D175/00
Filed: 1994-05-16
Granted: 1998-10-27
Abstract: Diglycidyl ether epoxy resins are reacted with a prepolymer  produced  from  an  organic  diisocyanate  and  a bifunctional active hydrogen compound having a soft segment whose terminal isocyanate groups have been blocked to chain-extend the epoxy resin with the prepolymer.   The chain-extended epoxy resin is then reacted with a cationic active hydrogen compound alone or in combination with an aliphatic monoalcohol, alkylphenol, glycol monoether or bisphenol to open the terminal epoxy rings of the chain-extended epoxy resin.  The modified epoxy resin thus produced is dispersed in an aqueous medium containing a neutralizing agent together with a crosslinker to give a cathodic electrodeposition paint having improved impact strength and other properties.
Patent CA-2125729-C (CA)
Title: Continuous film feed device and method therefor
Inventor: KISHI TAKUJI
IPC: B65H29/00
Filed: 1994-06-13
Granted: 1999-01-19
Abstract: Films to be fed to a photographic printing apparatus are continuously fed one after another without the need of splicing the films together.  The continuous film feed device has a case, a film core rotatably mounted in the case, and film presser arms each having a presser roll for pressing the films toward the center of the film core.  The films are wound around the film core with their ends overlapped by putting the leading end of each film under the tail end of the preceding film.
Patent CA-2126360-C (CA)
Title: Seal arrangement
Inventor: MARTSFELD RAINER
IPC: F16J15/3264
Filed: 1994-06-21
Granted: 2002-10-15
Abstract: A seal arrangement includes a seal having a polymeric sealing body and a flexible auxiliary member which is rigidly affixed to at least a portion of the sealing body and which is an electrical impulse generator and/or sensor adapted for use in the detection of variable parameters of the seal and its environment. The integration of the auxiliary member into the seal arrangement provides for a miniaturized construction and simple manufacture and, installation and operation at low cost.
Patent CA-2127964-C (CA)
Inventor: BELL RICHARD HOWARD
IPC: A41D31/00
Filed: 1994-07-13
Granted: 2005-01-25
Abstract: Disclosed is disposable protective coveralls having a reduced number of seams and a seamless shoulder construction. The disposable protective coveralls include a first body half and a second body half. Each body half is formed from a seamless sheet of material. The second body half is substantially a mirror image of the first body half. Each body half includes: 1) a body portion having a first and second edge and a top edge extending approximately half-way across the body portion from the top of the second edge; 2) a sleeve portion having a top and bottom sleeve edge, a top edge, and a segment of the second edge of the body portion; and 3) a leg portion having a front and a rear leg edge. The protective coveralls' construction also includes approximately eight seams and a closure. More particularly, body halves are united into protective coveralls by: a closure joining the first edges of each body portion on each body half; a seam joining the second edges of the body portion, including the segment of the second edges in the sleeve portions, on each body half; sleeve seams joining the top sleeve edges to the bottom sleeve edges on each body half; inseams joining the front leg edges to the back leg edges on each body half; and back seams joining each top edge of a sleeve portion with the top edge of its respective body portion on each body half.      Also disclosed is a method of making protective coveralls having a reduced number of seams and a seamless shoulder construction.
Patent CA-2128436-C (CA)
Inventor: KARLINSKI HAGGAI
IPC: B41J2/05
Filed: 1994-07-20
Granted: 2005-06-21
Abstract: A liquid droplet ejection device, which includes a number of liquid ejection nozzles, a liquid supply layer including porous material, with the liquid supply layer featuring holes related to the nozzles, and a number of transducers related to the holes for ejecting liquid droplets out through the nozzles.
Patent CA-2129375-C (CA)
Title: Exhaust vent cover
Inventor: WARD JOHN FREDERICK
IPC: F24F13/14
Filed: 1994-08-03
Granted: 2007-10-09
Abstract: An exhaust vent cover for closing the exhaust vent when the exhaust vent is not in use is shown. The exhaust vent cover includes a peripheral flange for attaching the cover to a surface and a continuous hollow body extending upwardly from the flange and having an open front as well as an air passageway communicating with this open front. The continuous hollow body further includes an overhang extending beyond the open front, a grill covering the open front to prevent access to the inside of the continuous hollow body, and a valve located inside the hollow body across the air passageway. The exhaust vent cover also includes a sloped upper surface to prevent the valve from being blown open.
Patent CA-2134347-C (CA)
Title: Thiazole or imidazole derivatives as maillard reaction inhibitors
Inventor: YASUMURA KOICHI
IPC: C07D417/06
Filed: 1994-02-21
Granted: 2003-04-29
Abstract: A compound represented by the following formula is disclosed: (see formula I) wherein the all symbols are defined in the disclosure.      A process for producing the compound, and a method for treating diseases caused by a Maillard reaction in living body using the compound are also disclosed.
Patent CA-2138434-C (CA)
Inventor: PERRON MAURICE
IPC: A43B17/00
Filed: 1994-12-19
Granted: 1996-09-03
Abstract: L'invention consiste en une fausse-semelle qui se veut isolante en plus d'être thérapeutique. La semelle consiste en un sandwich de plusieurs matériaux, nommément une mèche qui s'appuie sur 18 fond d'une chaussure, une pellicule d'aluminium dont le côté réfléchissant se fixe sur le dessus de la mèche et dont le côté mat est laminé sur une pellicule de polyéthylène. Cette dernière forme la paroi extérieure d'un sandwich de bulles d'air fait d'une ou deux rangées de bulles d'air, séparées par un film central de polyéthylène; et suivi par une autre pellicule de polyéthylène. Une seconde pellicule d'aluminium vient se fixer, par laminage sur son côté mat, sur la pellicule de polyéthylène, et le côté réfléchissant est collé à une deuxième mèche; cette dernière se fixe ensuite sur une épaisseur de tissu pourvu de perforations alignées sur les ouvertures des mailles de la deuxième mèche; le tissu forme la surface où le pied repose.
Patent CA-2143502-C (CA)
Title: Process and device for purifying sewage
Inventor: SONNENREIN UWE
IPC: C02F3/30
Filed: 1995-02-27
Granted: 1997-10-07
Abstract: In a method and a device for sewage purification, sewage is purified by continuously passing it through several stages of treatment, wherein the passage of sewage is regulated by a process control device and is monitored by sensors.  Treatment ensues in physical processing stages, pre-flotation stages, two-step biological clarification stages and one post-flotation stage.  The pre-flotation stages as well as the biological clarification stages are each provided with gas-water mixers, and the pre-flotation stages, the biological clarification stages and the post-flotation stage are provided with solid foam separators having outlet channels.          Clear water from a clear water overflow basin is supplied to the individual stages through the gas-water mixers and through a clear water return pipe.  It is also possible to provide chemical treatment prior to biological clearing, to provide clear water recycling for additional treatment, and to provide solids treatment and a reduction stage.  An aquatritor, a bioreactor and a four chamber system are also provided.  This method is also suitable for use in a portable device having a compact construction.
Patent CA-2153414-C (CA)
Title: Drill guide apparatus and method
Inventor: GOBLE E MARLOWE
IPC: A61B17/56
Filed: 1994-01-13
Granted: 1998-12-15
Abstract: A drill guide apparatus (10) and method are provided for aligning and installing a transverse pin (138) through a tunnel (94) formed by a tunnel drill (12) in a bone (74, 76) to secure a ligament replacement (124) to the bone (74). The drill guide (10) includes an arm member (24) and a drill guide sleeve (36, 50) coupled to the arm member (24). The drill guide sleeve (36, 50) is formed to include a central bore (70) for guiding a drill (104) to form a transverse guide hole (108) in the bone (74) to guide insertion of the transverse pin (138) into the bone (74). The central bore (70) of the drill guide sleeve (36, 50) has an axis which is aligned to intersect the tunnel (94). The arm member (24) of the drill guide (10) is coupled to the tunnel drill (12) while the tunnel drill (12) is still in the bone (74, 76) to align the arm member (24) and drill guide sleeve (36, 50) at a desired anatomical location using the tunnel drill (12) in the bone (74, 76) as a reference.
Patent CA-2154422-C (CA)
Inventor: BLOCHLE HANS G
IPC: B66D1/34
Filed: 1995-07-21
Granted: 2005-05-24
Abstract: The proposed cable-clamping device is suitable for highly loaded synthetic fibre cables (3) in lift construction, which can tolerate only small lateral pressures. It displays at least one retaining drum (10) connected firmly with either the cage (2) or the counterweight (7) of a lift. Several cable grooves (12), the grooves courses (16) of which end or run out one directly beside the other for the running-off of the cables (3), are arranged one beside the other on the retaining drum (10). The cable grooves (12) become progressively narrower in their cross-section from the entry of the loaded cable. Up to four and more retaining drums (10) are placeable one behind and beside the other in this manner, wherein the run-off regions (13) of the cable grooves (12) each time point one towards the other in order to avoid a fanning-out of the cables before the drive pulley.
Patent CA-2154648-C (CA)
Title: Reduced noise touch screen apparatus and method
Inventor: BERTRAM WILLIAM K
IPC: G06F3/0488
Filed: 1995-07-25
Granted: 2000-12-05
Abstract: A touch screen having a high or fine resolution at relatively low cost is provided.  In one embodiment, electrodes are placed directly on the surface of a CRT screen without the need for an electrode positioned on the rear surface.  The touch screen may include a conductive coating and protective coating which are preferably provided in a single vacuum chamber step.  A high gain system including a high-frequency sampling bandpass filter provide discrimination of the desired signal over noise.  A screen calibration technique is used to achieve linearization in order to convert the electric signals obtained from the screen into data indicative of the position of a touch on the screen.
Patent CA-2157394-C (CA)
Inventor: BRANDT BURKHARD
IPC: C02F1/46
Filed: 1994-02-24
Granted: 2001-05-01
Abstract: Lors d'une opération de traitement électrochimique, on extrait les constituants cationogènes de la lessive résiduaire de cellulose contenant des sulfonates de lignine et se trouvant dans l'espace anodique. Des acides sulfoniques de lignine sont obtenus à partir de cette lessive résiduaire.
Patent CA-2165553-C (CA)
Inventor: SOLOMON MERRILL
IPC: H04M3/54
Filed: 1993-06-18
Granted: 2003-09-16
Abstract: An anonymous interactive telephone system (10) for connecting a caller (16) to a suscriber (14) without divulging the identity or telephone number of either unless voluntarily revealed. The suscriber publishes an advertisement together with a telephone number of a system controller station (18). A suscriber reference number is embedded within the telephone number of the system controller station as a DID number. The suscriber also supplies information to the system controller station related to time periods during which calls may be directly forwarded to the suscriber or intercepted by the system controller. The system controller repeatedly accesses a switching station of the public telephone company (11) to activate and de-activate the call forwarding function of the switching station for controlling call forwarding to the suscriber on the basis of the embodiment published DID number. In a second embodiment, a call screening service for persons having unpublished telephone numbers is provided. In a third embodiment, a caller ID blocking is provided. In another embodiment, a call screening system having another machine style interfacing is provided.
Patent CA-2166808-C (CA)
Title: Agent-based multithreading application programming interface
Inventor: SMITH CURTIS A
IPC: G06F9/48
Filed: 1994-07-01
Granted: 2000-05-30
Abstract: An application programming interface (115) facilitates development of portable, multithreaded application programs. An application (107) is a collection of instances of agent classes (104). Agent classes (104) are organized in class hierarchies because new subclass agents may be derived from existing base class agents. Each agent class has its own message dispatching function; this allows the application programmer to alter the message passing framework provided by the application programming interface. Each agent instance within the program is independent because it is a sub-process aware only of its own data and context. Multithreading is provided by the application programming interface (115) which contains a master dispatcher process (108) non-preemptively allocating time to individual agents. Therefore, an application's multithreading capability is independent of the platform's operating system. In addition, a thread of execution may be split when the currently activated agent activates the master dispatcher (108). The application programming interface (115) mediates between the system resources and the application, and maps the user interface of the application to the platform's chosen user interface. Therefore, the application and its user interface are portable.
Patent CA-2169011-C (CA)
Title: Method and device for finishing the surface layers of the machine reel that is formed during reeling of the web
Inventor: AALTO ESA
IPC: B65H18/26
Filed: 1995-06-09
Granted: 2001-08-07
Abstract: The invention concerns a method and a device for finishing the surface layers of the machine reel (13) that is formed during reeling of the web (P). In the method, a member (20) that presses the web is brought onto the face of the reel (12) that is being completed before the reel (12) that is being completed is transferred to the reel change position. The full reel (12) is transferred to the reel change position so that the member (20) that presses the web during nip-free reeling forms a contact with the web, which contact prevents access of air between the web layers, and follows the full reel (12) during its transfer to the reel change position. During the reeling of the surface layers to be finished, the member (20) that presses the web is shifted apart from the face of the reel (12) that is being completed along such a path (D) of movement that the member (20) that presses the web maintains a contact of the desired extent with the face of the reel (12) that is being completed.
Patent CA-2172535-C (CA)
Title: Virtual reality network
Inventor: DURWARD JAMES
IPC: G06T19/00
Filed: 1994-09-22
Granted: 2002-12-10
Abstract: A virtual reality system has a database for defining one or more three-dimensional virtual spaces. A communication unit establishes a communication between the database and a user, and a data communication unit communicates data from the database to the user so that the user's computer may display a portion of a selected virtual space on the user's head mounted display. The communications unit also receives data corresponding to the position, orientation, and/or movement of the user relative to a reference point and uses the data to define a virtual being within the virtual space, wherein the position, orientation, and/or movements of the virtual being are correlated to the received data. Preferably, the data communicated to the user typically corresponds to the portion of the virtual space viewed from the perspective of the virtual being. The system defines other virtual beings within the database in response to position, orientation, and/or movement data received from other users, and the portions of the virtual space communicated to the other users may correspond to the perspectives of their associated virtual beings. The system periodically updates the database and communicates the updated portions of the database to the users to reflect changes in perspective of the virtual beings and changes in the position of moving objects within the virtual space. The system also supports audio communication with the users. To reduce the amount of data communicated between the computer and each user, visual and sound priority spaces may be defined within the portion of the virtual space data communicated to the user, and elements within selected priority spaces may be updated in priority over other priority spaces.