baber/WOPTO huggingface dataset:
Patent CA-2075843-C (CA)
Title: Echo canceller
Inventor: SUGAYA FUMIAKI
IPC: H04B14/04
Filed: 1992-08-12
Granted: 1997-10-21
Abstract: In an echo canceller having PCM interfaces used in a PCM telephone circuit, an echo estimator (65) is coupled with a receive path through a linear code converter (632) for measuring a linear receive input signal, and a subtracter (7) is inserted after a linear code converter (631) in a transmit path for cancelling an echo component in a linear transmit input signal. The same procedure as that in a conventional echo canceller is performed in a divergent situation in the echo estimator (65) in which a large step gain is assigned, and in a convergent situation in the echo estimator (65) in which a relatively small step gain is assigned, a non-linear quantization processor (27,271) is inserted between the subtracter (7) and the echo estimator (65). The non-linear quantization processor (27,271) produces a new echo estimate containing a quantization noise, based on an echo estimate which is derived from the echo estimator (65). The new echo estimate can cancel not only the echo but also the quantization noise in the linear transmit input signal. The echo canceller having the non-linear quantization processor (27,271) can achieve a high echo return loss enhancement even for a multi-linked PCM channel.
Patent CA-2077341-C (CA)
Title: Dentifrice inhibiting dental plaque
Inventor: ROELLA GUNNAR
IPC: C08L83/04
Filed: 1991-03-04
Granted: 2001-07-24
Abstract: Dentifrice comprising a liquid silicone oil and a fat-soluble antibacterial agent dissolved therein either directly or indirect-ly after dissolution of the antibacterial agent in an organic solvent. The dentifrice is useful for protection of teeth against plaque formation due to a slow release of the antibacterial agent into the saliva.
Patent CA-2084039-C (CA)
Title: Parallel data processing control system
Inventor: ISHIZAKA KENICHI
IPC: G06F9/44
Filed: 1992-11-27
Granted: 1999-01-19
Abstract: In a parallel data processing control system for a parallel computer system having a plurality of computers and an adapter device connecting the computers to each other, a first unit, which is provided in the adapter device, transfers pieces of data processing progress state information to the computers.  The pieces of the data processing progress state information respectively indicate data processing progress states of the computers.  A second unit, which is provided in each of the computers, holds the pieces of the data processing progress state information.  A third unit, which is provided in each of the computers, holds management information indicating a group of computers which share a data process.  A fourth unit, which is provided in each of the computers, determines whether or not the computers in the group have completed the data process on the basis of the pieces of the data processing progress state information and the management information.
Patent CA-2085582-C (CA)
Title: Process for adsorbing sulfur species from propylene/propane using regenerable adsorbent
Inventor: NORRIS DONALD J
IPC: C10G29/16
Filed: 1991-06-11
Granted: 1999-05-18
Abstract: A method of removing sulfur components from a hydrocarbon stream which involves contacting a hydrocarbon stream including an initial amount of at least one sulfur species selected from the  group  consisting  of  mercaptans,  organic  sulfides,  and disulfides with a catalyst  capable of adsorbing the  sulfur species in the absence of extraneously added hydrogen and under conditions suitable for removing the at least one sulfur species from the hydrocarbon stream by the catalyst to form a resultant hydrocarbon stream containing a reduced amount of the at least one sulfur species.
Patent CA-2092966-C (CA)
Title: Distribution of communication connections over multiple service access points in a communications network
Inventor: JOHNSON DAVID B JR
IPC: G06F13/00
Filed: 1993-03-30
Granted: 2003-08-05
Abstract: a communications control system for distributing execution of communication connections among the services access points of a local multiprocessor computer system and remote computer systems interconnected by a communications network.   A load balancing module includes a local user list for storing the number of communications connections being executed by each local service access point and a remote user list for storing the number of communication connections between each local service access point in the local computer system and each remote service access point.  The load balancing module responds to a request gater by scanning the local user list and the remote user list to select a local service access point and a remote service access point forming a communications path between the local user and the remote user presently executing the lowest number of communications connections, and constructs a path response gater containing an identification of the selected local service access point, and an identification of the selected remote service access point.
Patent CA-2094839-C (CA)
Title: Snap-on-shelf
Inventor: KANE EDMUND J
IPC: B29C70/84
Filed: 1993-04-26
Granted: 2000-07-18
Abstract: A snap-on shelf for use in a refrigerator has a shelf panel with a perimeter edge and a perimeter rim molded about the perimeter edge. Attachment clips are molded in one piece with the perimeter rim and releasably couple with a support frame for supporting the shelf panel. In one embodiment, attachment clips may be arranged at front and back rim regions for a fixed shelf configuration. In an alternative embodiment, attachment clips may be arranged at left and right sides of the perimeter rim and slidingly engage the frame for a sliding shelf configuration.      Further, the shelf panel may be a separate piece from the perimeter rim or may alternatively be molded in one piece with the perimeter rim and the attachment clips. As another option, a slide for receiving and supporting a separate member in sliding engagement under the shelf panel may be used. As a further option, the attachment clips and perimeter rim may be adapted for use with a preexisting support frame.
Patent CA-2098368-C (CA)
Title: Method of managing, in a telecommunication network, user data of a user who may move from a base work area associated with a base exchange to another work area associated with another exchange
Inventor: HECKER HUBERTUS PIERRE JOHANNE
IPC: H04Q3/00
Filed: 1993-06-14
Granted: 1996-08-20
Abstract: In a known method of managing, in a telecommunication network, user data of a user who may move from a base work area associated with a base exchange to another work area associated with another exchange, only the data required for the user are copied from the base memory means to the other memory means, all the user data remaining stored in the base memory means and the required user data again being copied from the base memory means in the event of a further movement of the user. A disadvantage in this connection is that said data are present twice in all cases. In the method according to the invention, the largest portion of the user data is copied and, after inspection for correctness, this portion of the data, which is stored in the other memory means, becomes definitive, as a result of which the portion present in the base memory means becomes negligible and/or overwriteable.
Patent CA-2104098-C (CA)
Title: Electronic apparatus having keyless control
Inventor: METROKA MICHAEL P
IPC: H04W88/02
Filed: 1992-10-05
Granted: 1999-09-07
Abstract: The method and apparatus of the present invention permits data entry in an electronic apparatus without using a keypad. By rotating a moveable element (104), a function, letter, or number is selected. The moveable element (104) is then moved in another direction to enter the selected item. The function, letter, or number can hr displayed on a display (106), announced with a synthesized voice, or displayed and announced.
Patent CA-2108305-C (CA)
Title: Optical concentrator and optical communication network using the same
Inventor: YAMAMOTO NOBORU
IPC: H04B10/80
Filed: 1993-10-13
Granted: 1998-09-22
Abstract: In an optical concentrator, a plurality of ports are provided for inputting and outputting first and second optical signals having different wavelength regions.  An optical coupler is connected to each of the plurality of ports without being through remaining ones of the plurality of ports.  The optical coupler transmits the second optical signal input from one of the plurality of ports to at least one of the remaining ports.  A transmitter is provided to connect the plurality of ports in a loop form.  The first optical signal input from each port is transmitted from the transmitter.  Demultiplexers are arranged at each port for demultiplexing the first and second optical signals input from each port so as to guide the first optical signal to the transmitter and the second optical signal to the optical coupler.
Patent CA-2113565-C (CA)
Inventor: SPEAR DAN
IPC: G06F/
Filed: 1992-07-15
Granted: 1998-05-05
Abstract: A method of increasing the amount of directly addressable memory address locations that can be allocated to RAM. An initialization routine is executed to identify ROM's in reserved memory address space that are to be reallocated. Suitable address space in extended memory is located and the ROM's are mapped into extended memory address space. A ROM access interceptor routine is implemented to trap ROM accesses and direct them to the reallocated address space. A ROM access handler routine is implemented to contain the ROM execution and to restore the computer system to a condition where it can continue execution of application or system software after the ROM access is completed. Memory addresses in reserved address space formerly allocated to ROM's can be reallocated to RAM or other memory devices.
Patent CA-2114569-C (CA)
Inventor: LI CHUNG-SHENG
IPC: H04L12/64
Filed: 1994-01-31
Granted: 1999-03-02
Abstract: A method and apparatus for intermixing circuit and packet data on a shared transmission medium.   With this invention, the history of gaps between transmitted circuit frames is used to predict future gap sizes.  If the size of a predicted gap is larger than the size of a frame of packet data to be transmitted,  then the packet data is inserted in the next gap.  If a circuit data frame arrives before the completion of transmission of a packet frame, the circuit data will be stored in an insertion buffer until completion of transmission of the packet frame.
Patent CA-2115030-C (CA)
Title: Medal piece feed system for game machine
Inventor: TAKEMOTO TAKATOSHI
IPC: G07D9/00
Filed: 1991-10-11
Granted: 1996-02-27
Abstract: The present invention relates to a medal piece feed system which is so constructed that medal pieces can be fed from holes formed in a bottom of a medal piece container, into chutes underlying the respective holes.  A medal piece feed system for game machines has feed cylinders that each have their lower part snugly inserted in a corresponding hole.  The feed cylinders are adapted to be driven and rotated, and are erected inside the medal piece container 1.    An acceptance opening is formed in a peripheral wall of each feed cylinder which faces the interior of the medal piece container.  A delivery opening which communicates with the interior of the underlying chute is formed in a base plane of each feed cylinder.
Patent CA-2115203-C (CA)
Inventor: TAMURA MITSUAKI
IPC: G02B6/35
Filed: 1994-02-08
Granted: 1997-05-20
Abstract: An optical fiber switching apparatus having a guide frame which is supported by an apparatus body.  The guide frame has a guide groove.  Disposed on the guide grooves is a movable moving member.  The moving member can be moved by the apparatus along the guide groove.  A slide terminal is connected by a support to the moving member.  The support allows the slide terminal to approach the moving member and thereby causing the slide terminal to enter an unlocked position or to move away from the moving member and thereby causing the slide terminal to enter a locked position.  The slide terminal support an end face of an optical fiber.  The apparatus also includes a driving wire which has two end portions.  The end portions are disposed through the moving member and are coupled to the slide terminal, thereby forming a loop in the driving wire.  The apparatus can move the slide terminal by causing tension in the driving wire so as to cause the slide terminal to enter the unlocked position, and thereby allowing the moving member to move along the guide groove by a longitudinal movement of the driving wire.
Patent CA-2116000-C (CA)
Title: Couvercle pour dispositif de transport ou de stockage d'articles
Inventor: GARVEY MARK C
IPC: B65G1/06
Filed: 1992-08-17
Granted: 1997-10-21
Abstract: Un couvercle (22) pour un transporteur ou accumulateur (10) d'objets à surface de support (14) de type table comporte un élément essentiellement plat et transparent monté au-dessus de la surface de support (14). La distance entre le couvercle (22) et la surface de support (14) est réglée de façon à être légèrement supérieure à la hauteur des articles (21) transportés sur le transporteur ou l'accumulateur (10). Le couvercle (22) maintient les articles (21) en position verticale en les empêchant de se renverser.
Patent CA-2118997-C (CA)
Title: Benzimidazole derivatives, their preparation and use
Inventor: OLESEN SOREN-PETER
IPC: A61P25/00
Filed: 1994-03-14
Granted: 2002-05-28
Abstract: A compound having the formula (see formula I) wherein X is O, S   R4, R5, R5 and R7 independently of each other are hydrogen, halogen, or CF3;      R' is hydrogen or NO2; and further a method of treating a disorder or disease of a living animal body, including a human, which is responsive to opening of potassium channels, which comprises administering to a living animal body, including a human, in need thereof an effective amount of a compound as above.
Patent CA-2119142-C (CA)
Inventor: PATTON PAUL B
IPC: F23N5/24
Filed: 1993-06-02
Granted: 2003-03-18
Abstract: An annunciator for the conduction status of individual switches (15) wired into a series circuit records this status as status history at regular intervals in a memory (69). The status history is preferably recorded as individual entries having the identification number of an open switch (15) along with a time stamp specifying the length of time which that switch (15) has been open. The current entry is recorded in the mem-ory (69) and a new entry started each time the switch (15) for which an entry in the memory (69) is being created closes or a switch (15) currently receiving power opens. A controller (40) separate from the annunciator generates a request signal and provides a request time value to the annunciator specifying the time which has elapsed since the request condition was detected. The annunciator uses the request time value to de-termine the probable switch conduction status at the time of the request.
Patent CA-2128760-C (CA)
Inventor: WU TSAN-HSING
IPC: E04D3/363
Filed: 1994-07-25
Granted: 1999-03-16
Abstract: A corrugated metal plate comprises a metal plate provided at two opposite sides thereof with an insertion cap and an insertion seat.  Two or more corrugated metal plates are joined together side by side by fastening the insertion cap of one corrugated metal plate with the insertion seat of another corrugated metal plate. The corrugated metal plate is further provided with a predetermined number of ridges located between the insertion seat and the insertion cap.
Patent CA-2133930-C (CA)
Inventor: BRANDLY GORDON R
IPC: E03B7/07
Filed: 1994-10-20
Granted: 2011-05-10
Abstract: Un dispositif est démontré pour l'inspection de l'intégrité des canalisations de distribution d'eau. Le dispositif est construit d'unités de logement, pour le logement de la circuiterie d'inspection, qui sont généralement de forme sphérique. Les unités de logement sont raccordées par des connecteurs souples qui peuvent, dans quelques réalisations, permettre la communication entre les unités. Ainsi, le dispositif a la capacité de négocier des courbes et de traverser des ouvertures de taille réduite dans la canalisation. Le dispositif peut être utilisé avec diverses technologies d'inspection y compris la technologie d'inspection par courants de Foucault des champs lointains. La méthode porte aussi sur une méthode permettant l'inspection de l'intégrité de système de canalisations d'eau où des prises d'eau peuvent être utilisées pour accéder au système.
Patent CA-2144289-C (CA)
Title: Method and apparatus for making an ophthalmic lens
Inventor: ADAMS JONATHAN PATRICK
IPC: G02B1/04
Filed: 1995-03-09
Granted: 2006-12-12
Abstract: A method and apparatus for making an ophthalmic lens pumps monomer into one end of a gas permeable tube along its interior length while a chamber surrounding the gas permeable tube is maintained at a subatmospheric pressure by means of a vacuum pump. Preferably, the gas permeable tube is made of silicon rubber. Static mixers introduce mixing into the flow of the monomer within the tube in order to expose the bulk of the monomer to the gas permeable walls of the tube. Under such conditions in the gas permeable tube, the majority of the dissolved gasses are removed from the monomer and continue to be drawn out of the chamber by the pump connected to the chamber. The degassed monomer is then transferred into a mold where it is polymerized into an ophthalmic lens.
Patent CA-2159560-C (CA)
Title: Tray for a component and an apparatus for accurately placing a component within the tray
Inventor: CRISP RODNEY E
IPC: H01L21/673
Filed: 1995-09-29
Granted: 1999-06-15
Abstract: A tray for housing integrated circuit components or chips and an apparatus for transporting the chips to the tray from a bulk supply of chips.  The tray protects the chip against damage during handling, storage and shipping, can be readily and repeatedly connected to another like tray in a releasable manner and is designed for positive alignment with respect to the apparatus.  The apparatus is manually activated and readily transports the chip without damage.
Patent CA-2161117-C (CA)
Title: Differential audio line receiver
Inventor: WHITLOCK WILLIAM E
IPC: H03F3/45
Filed: 1994-04-22
Granted: 1999-02-02
Abstract: An audio line receiver which tolerates a wide range of balanced and unbalanced source impedances with a minimal deterioration of the line receiver's common-mode rejection ratio. The line receiver includes a differential amplifier (50) with input amplifiers (52, 54) on each input of the differential amplifier. The input amplifiers are typically operation amplifiers (A8 or A9) connected for unity gain, but also having two bias resistors (R17 and R19, or R18 and R20) connected in series between the input terminals of the input amplifiers and ground. A capacitor (C1 or C2) connected from the output of the operational amplifier to a node between the two series connected bias resistors prevents the low impedance of the bias resistors from significantly degrading the line receiver's common-mode rejection ratio.
Patent CA-2161727-C (CA)
Inventor: GIAMMARUTI ROBERT JOSEPH
IPC: F23D1/00
Filed: 1995-10-30
Granted: 1999-02-02
Abstract: A distribution half-cone for a granular or pulverized fuel, typically coal, burner is mounted within a burner nozzle thereof proximate to a burner elbow of the burner to provide a space or gap between an inner wall of the burner nozzle and the outer surface of the distribution half-cone of approximately 3/16 inch to prevent fuel roping and to minimize the pressure drop in the burner. The inlet of the distribution half-cone is formed as a sharp edge nozzle to minimize pressure drop in the burner.
Patent CA-2167647-C (CA)
Inventor: AUDOUSSET MARIE-PASCALE
IPC: A61K8/49
Filed: 1996-01-19
Granted: 1999-12-21
Abstract: La présente invention a pour objet une composition pour la teinture d'oxydation des fibres kératiniques, en particulier des fibres kératiniques humaines telles que les cheveux, comprenant un précurseur de colorant d'oxydation choisi parmi le 3-fluoro 4-aminophénol, le N,N'-bis-(.beta.-hydroxyethyl) N,N'-bis-(4'-aminophényl) 1,3-diamino 2-propanol et leurs sels d'addition avec un acide, en association avec le 4-hydroxyindole, ainsi que le procédé de teinture mellant en oeuvre cette composition avec un agent oxydant.
Patent CA-2172430-C (CA)
Inventor: DEAR AIDEN ROBERT
IPC: B21J15/32
Filed: 1996-03-22
Granted: 2007-07-24
Abstract: Riveting apparatus of the type in which an elongated mandrel (30), having an enlarged head at one end and loaded with a plurality of the tubular rivets (40) forming a column of rivets on the mandrel, is gripped by gripping means (43) at or near the end remote from the head, and reciprocated relative to an abutment (32) by relative reciprocation between the gripping means (43) and the abutment (32), the rivets (40) in the column being fed forwardly along the mandrel (30) so that the leading rivet nearest the mandrel head is positioned between the mandrel head and the abutment (32) and can then be set by moving the mandrel (30) rearwardly relative to the abutment (32) so as to draw the head of the mandrel through the bore of the rivet (40) while the rivet is supported by the abutment (32);  includes means (55) for feeding rivets (40) forwardly along the mandrel (30), and an abutment (32) provided by a plurality of members (28, 28) movable between a closed position (Fig. 3A) in which they provide an abutment (32) to support a rivet (40) as aforesaid and an open position (Fig. 3B) in which they allow the free passage of rivets (40) between them, and is provided with a control system (12) operatively connected to the appropriate elements of the apparatus (11) for controlling their operation respectively, the control system (12) including an actuation device (PB.4), such that, upon actuation by an operator of the actuation device (PB.4) the control system (12) controls the riveting apparatus (11) so that the rivet feeding means (55) is activated or de-activated, the abutment members (28, 28) are closed or opened, and the mandrel gripping means (43) is activated or de-activated, with a time delay between each step, to enable rapid removal and replacement of the mandrel (30).
Patent CA-2178637-C (CA)
Inventor: DOUGHTY DAVID GEORGE
IPC: A61K31/4525
Filed: 1994-12-14
Granted: 1997-12-23
Abstract: Paroxetine which is formulated into labels using a formulation process in which water is absent.
Patent CA-2179407-C (CA)
Title: Process for the preparation of leukotriene antagonists
Inventor: BHUPATHY MAHADEVAN
IPC: C07D215/14
Filed: 1994-12-22
Granted: 2009-03-17
Abstract: The present invention relates to a process for the preparation of a compound of formula (I) or a sodium salt thereof, wherein HET is 7-chloroquinolin-2-yl or 6,7-difluoroquinolin-2-yl, which comprises: reacting the dilithium dianion of 1-(mercapto- methyl)cyclopropaneacetic acid with a compound of formula (II), wherein HET is as defined above and L is arylsulfonyl or alkylsulfonyl. The invention further provides the di- cyclohexylamine salt of a compound of formula (I), an intermediate falling within (II) and a 1- (Mercaptomethyl)cyclopropaneacetic acid intermediate.
Patent CA-2180829-C (CA)
Title: Cephalosporin synthesis
Inventor: ASCHER GERD
IPC: C07D501/18
Filed: 1995-04-24
Granted: 2008-06-03
Abstract: Intermediates in the production of cephalosporins of formula (IA) wherein either a) R a denotes hydrogen or a silyl group; R b denotes a group of formula -OR e, wherein R e denotes hydrogen or alkyl; and R c and R d together denote a bond; or .beta.) R d and R a denote hydrogen or a silyl group; and R b and R c together denote an imino group of formula - N-Y, wherein Y denotes alkyl, aryl or heterocyclyl; or .gamma.) R d denotes hydrogen or a silyl group; R a denotes hydrogen, if R d denotes hydrogen; or, R a denotes hydrogen or a silyl group, if R d denotes a silyl group; and R b and R c together denote the oxo group; in free form or in salt form.