baber/WOPTO huggingface dataset:
Patent CA-2046818-C (CA)
Title: Passive ranging and rapid autofocusing
Inventor: SUBBARAO MURALIDHARA
IPC: G02B7/36
Filed: 1991-07-11
Granted: 2001-08-28
Abstract: Apparatus and methods based on signal processing techniques are disclosed for determin-ing the distance of an object from a camera, rapid autofocusing of a camera, and obtaining focused pictures from blurred pictures produced by a camera. The apparatus of the present invention includes a camera characterized by a set of four camera parameters:  position of the image detector or film inside the camera, focal length of the optical system in the camera, the size of the aperture of the camera, and the characteristics of the light filter in the camera. In the method of the present invention, at least two images of the object are recorded with different values for the set of camera parameters. The two images are converted to a stan-dard format to obtain two normalized images. The values of the camera parameters and the normalized images are substituted into an equation obtained by equating two expressions for the focused image of the object. The two expressions for the focused image are based on a new deconvolution formula which requires computing only the derivatives of the normalized images and a set of weight parameters dependent on the camera parameters and the point spread function of the camera. In particular, the deconvolution formula does not involve any Fourier transforms and therefore the present invention has significant advantages over prior, art. The equation which results from equating two expressions for the focused image of the object is solved to obtain a set of solutions for the distance of the object. A third image of the object is then recorded with new values for the set of camera parameters. The solution for distance which is consistent with the third image and the new values for the camera parameters is determined to obtain the distance of the object. Based on the distance of the object, a set of values is determined for the camera parameters for focusing the object. The camera parameters are then set equal to these values to accomplish autofocusing. After determining the distance of the object, the focused image of the object is obtained using the deconvolution formula. A generalized version of the method of determining the distance of an object can be used to determine one or more unknown camera parameters. This gen-eralized version is also applicable to any linear shift-invariant system for system parameter estimation and signal restoration.
Patent CA-2048331-C (CA)
Inventor: WEBER ROBERT E
IPC: A41D31/00
Filed: 1991-08-01
Granted: 2001-12-11
Abstract: Disclosed herein is a repellent-treated, barrier coated nonwoven web. Nonwoven webs with small fiber and pore sizes can often be surface coated with a barrier coating such as latex to form a nonwoven which will act as a barrier to liquids. Surface coating of nonwovens having larger pores and fibers is more difficult as the coating often sinks into the thickness of the nonwoven web. The material of the present invention is a larger fiber/pore nonwoven web which will permit surface coating to form a material which has a good hand and cloth-like feel while also acting as a barrier to liquids. Such a material has a wide variety of applications including, but not limited to, personal care products, surgical drapes and gowns and other applications requiring barrier properties.
Patent CA-2048859-C (CA)
Title: Material holding apparatus with integrated finger mount
Inventor: BULL CHARLES L
IPC: A61B19/02
Filed: 1991-08-09
Granted: 1997-02-04
Abstract: A materials holding apparatus consisting of a receptacle, flange and mount for use in the practice of dentistry capable of bringing the necessary implements to the operation at hand and making the requisite materials available for timely use, which can be worn on the finger or thumb of both left-handed and right-handed individuals with equal ease and remains stable and does not slip and slide around the finger or thumb.
Patent CA-2070937-C (CA)
Title: Reclosable plastic bags and method of making same utilizing discontinuous zipper profile disposed along a continuous carrier strip
Inventor: TILMAN PAUL
IPC: B31B19/90
Filed: 1992-06-10
Granted: 1998-09-15
Abstract: A reclosable plastic bag is provided with a zipper assembly having zipper strips mounted on a carrier tape.  The carrier tape extends beyond the zipper strips and side seals for the bag extend through the sections of the carrier tape which extend beyond the zippers.  A method for producing such bags is also disclosed.
Patent CA-2070984-C (CA)
Title: Tiles for pedestrian platforms and walkways
Inventor: SZEKELY KENNETH E J
IPC: E01F9/50
Filed: 1992-06-10
Granted: 1994-05-31
Abstract: ABSTRACT     A marking tile is disclosed, for use in conjunction with pedestrian platforms and walkways.  The preferred embodiment of the tile has a plurality of buttons or longitudinal strips projecting upwardly therefrom to provide a distinctively textured upper surface.  Edges of the tile which face pedestrian traffic have a downwardly angled portion such that the height of the upper surface of the tile at the traffic-facing edge is substantially at the height of the lower surface of the rest of the tile, so that the edge may be installed flush with the platform or walkway if the surface of the platform or walkway is bevelled beneath the angled portion.  An integral flange, preferably angled away from the vertical, projects downwardly from each traffic-facing edge, for positioning in a groove of corresponding dimension to be cut into the platform or walkway.  The upward projections are of a lower height adjacent each traffic-facing edge than elsewhere on the tile.  Where buttons are used, the button surfaces and the surface of the tile between the buttons are provided with a plurality of small upward projections to texture the surfaces.  Where the tile is installed at the edge of a platform, an integral right-angled flange projects downwardly therefrom to overlie the face of the platform.
Patent CA-2074787-C (CA)
Title: Apparatus for contacting running paper webs with dried steam
Inventor: WINHEIM STEFAN H
IPC: D21G7/00
Filed: 1992-07-28
Granted: 1996-08-06
Abstract: Apparatus for directing steam against one side of a running web of fibrous material has a housing defining one or more steam chambers and having walls which surround the chamber or chambers.  One of the walls is apertured and is located at the path for the web to direct jets of steam toward successive increments of the running web.  The steam is dried prior to admission into the chamber or chambers via one or more adjustable valves, and at least one wall of the housing is heated by dried and/or undried steam in order to reduce the likelihood of condensation of steam in the chamber or chambers.
Patent CA-2076422-C (CA)
Title: Universal body exercise unit
Inventor: LEKHTMAN GREGORY
IPC: A63B23/035
Filed: 1992-08-19
Granted: 1998-08-04
Abstract: A support body of a flexible material has a first handle extending from one end of the body and a second handle extending from the second end.  The support body is disposed in engagement with one part of an exerciser and the handles are grasped in the hands of the exerciser.   Thus, the driving force of the arms of the exercise are used against the restraining force of the one part of the body.          The support body may be made up of two flexible members which  are  detachably  and  adjustably  attachable  to  each other.   Alternatively,  it may comprise a single flexible member.
Patent CA-2079063-C (CA)
Title: Process for separating electrodeposited metal in electrolytic refining and apparatus for carrying out same process
Inventor: SAITO HIDEOMI
IPC: C25C7/08
Filed: 1992-09-24
Granted: 2004-01-13
Abstract: A process for separating an electrodeposited metal from a cathode plate in electrolytic refining is disclosed. The cathode plate on which the metal is electrodeposited is first held. Then, heated air is blown toward the cathode plate and the electrodeposited metal thereon. As a result, the electro-deposited metal. is separated from the cathode plate. An appa-ratus for carrying out the same process is also disclosed. The apparatus includes a separating furnace, a holding assembly, and a device for introducing heated air into the separating furnace. The holding assembly is attached to the separating furnace for holding the cathode plate in the furnace. The heated air-introducing device introduces heated air, blowing it against the cathode plate, whereby the electrodeposited metal is separated from the cathode plate.
Patent CA-2079943-C (CA)
Title: Apparatus for manufacturing a woven slide fastener stringer
Inventor: KOJIMA MASAAKI
IPC: A44B19/54
Filed: 1992-10-06
Granted: 1996-06-04
Abstract: An apparatus for manufacturing a woven slide fastener stringer is disclosed, which apparatus includes a first reed for beating a filling yarn through a shed of warp threads against the fell of a tape being woven and a second reed for beating a monofilamentary fastener element having successively interconnected convolutions in place along a longitudinal edge of the tape.  The first and second reeds are actuated to alternate in their respective beating-up movements.  The second reed is positioned to beat the element convolutions substantially centrally thereof away from their coupling head portions.
Patent CA-2090095-C (CA)
Title: Water-continuous emulsions based on polysaccharides
Inventor: CAMPBELL IAIN JAMES
IPC: A23L29/256
Filed: 1993-02-22
Granted: 1998-09-01
Abstract: The invention concerns water-continuous emulsions having a fat content of 1-60 wt.%, and wherein the aqueous phase consists of a gelling polysaccharide capable of forming a gel while the shear modulus of the aqueous phase must fulfil specific requirements and while the gelling polysaccharides are present as microgels with a mean equivalent diameter of less than 100 µm.        The emulsion is spoonable, meaning that it fulfils specific requirements as to yield value, Bingham viscosity and failure to stress.            The emulsions can be used in non-dairy creams, in dressings and mayonnaises.
Patent CA-2090166-C (CA)
Title: Multilevel coding using trellis-coded modulation and reed-solomon codes
Inventor: WEI LEE-FANG
IPC: G06F11/10
Filed: 1993-02-23
Granted: 1998-09-01
Abstract: A multilevel coded modulation scheme trellis encodes a portion of the input data, and the resulting encoded stream is used to identify a particular one of a predetermined number of subsets of symbols of a predetermined signal constellation. The remaining input data is coded using a Reed-Solomon (RS) code whose output is used to select for transmission a particular symbol from the identified subset. In applications in which phase hits or other channel phenomena may cause the received signal points to be phase-rotated versions of the signal points that were transmitted, differential encoding is included in the overall coded modulation scheme. In different embodiments, the differential encoding/decoding and RS encoding/decoding are in different orders. In one such embodiment, overlapped multilevel codes are used to preserve the advantages afforded by taking a multilevel coding approach.
Patent CA-2090297-C (CA)
Title: Adaptive noise reduction circuit for a sound reproduction system
Inventor: ENGEBRETSON A MAYNARD
IPC: H03H17/08
Filed: 1993-02-24
Granted: 2001-04-24
Abstract: A noise reduction circuit for a hearing aid having an adaptive filter for producing a signal which estimates the noise components present in an input signal. The circuit includes a second filter for receiving the noise-estimating signal and modifying it as a function of a user's preference or as a function of an expected noise environment. The circuit also includes a gain control for adjusting the magnitude of the modified noise-estimating signal, thereby allowing for the adjustment of the magnitude of the circuit response.      The circuit also includes a signal combiner for combining the input signal with the adjusted noise-estimating signal to produce a noise reduced output signal.
Patent CA-2095447-C (CA)
Title: Shortcut network layer routing for mobile hosts
Inventor: PERKINS CHARLES E
IPC: H04L12/56
Filed: 1993-05-04
Granted: 1998-09-01
Abstract: A method for routing a packet of information between two hosts that are coupled to a network. Each of the hosts have a unique network address, and at least one of the hosts is a mobile host (10) that does not have a fixed network coupling location.  The  method  includes  a  first  step  of  (a) transmitting a packet from the mobile host to a second, destination host on the network through a wireless link that is established between the mobile host and a base access station (12) that serves a current physical location of the mobile host.  The base  access  station is  coupled to the network via a subnetwork (LAN) (14), and the packet includes a first Internet Protocol (IP) Loose Source Routing (LSR) option that includes a network address of the base access station.  A second step  (b)  receives with the destination host the packet that includes the first IP LSR option. A third step (c) transmits a further, reply packet from the second host to the mobile host via the base access station in accordance with a path reversal technique wherein the reply packet includes a second IP LSR option that specifies as a first Routing address the network address of the base access station. As a result, the reply packet is directed through the network to the base access station that serves the current physical location of the mobile host,  and an optimal,  fast routing of the packet is  achieved without involving intermediate gateways (16, 18).
Patent CA-2096223-C (CA)
Title: Treatment for tissue ulceration
Inventor: SCHULTZ GREGORY
IPC: A61K31/22
Filed: 1991-11-21
Granted: 2002-09-24
Abstract: Compounds of formulae (1) or (2) wherein R1 is H and R2 is alkyl (3-8C) or wherein R1 and R2 taken together are -(CH2)n- wherein n = 3-5; R3 is H or alkyl (1-4C); R4 is a substituted or unsubstituted fused or conjugated bicycloaryl methylene; X is OR5 or NHR5, wherein R5 is H or substituted or unsubstituted alkyl (1-12C), aryl (6-12C), aryl alkyl (6-16); or X is an amino acid residue or amide thereof; or X is the residue of a cyclic amine or heterocyclic amine are use-ful for treating or preventing ulceration of tissue, especially cornea.
Patent CA-2097349-C (CA)
Inventor: HASKELL BARIN GEOFFRY
IPC: H04N21/44
Filed: 1993-05-31
Granted: 1999-01-19
Abstract: Complications of timing recovery in an ATM receiver are overcome by employing a first phase lock loop including a phase comparator, filter, voltage controlled oscillator (VCO) and output counter to lock to systems clock reference (SCR) values which are asynchronously received from a remote ATM transmitter. The SCR values represent the instantaneous values of a system timing clock (STC) at the instant of transmission of the asynchronous SCR values. In the receiver, the output counter is first set to the value of the initial received SCR value so that the derived STC is available for decoding data cells in the initial received packets. Then, so-called Presentation/Decode Time Stamps (PTS/DTS) included in the audio and video data are advantageously employed in conjunction with STC to display properly the received data. In one embodiment of the invention, underflow of the receiver data buffers is alleviated by the addition of a "jitter-delay (D j)" value which causes an extra accumulation of data in the data buffers prior to decoding. Dynamic tracking of the jitter-delay of the channel is obtained by monitoring the fullness of the data buffers and controllably adjusting the jitter-delay, accordingly. The stability of the decoder video timing is enhanced by employing an additional phase locked loop in a video display control which is supplied with a timing error signal. The additional phase locked loop includes a switch, filter, clipper and voltage controlled oscillator (VCO). The switch is enabled in response to output pulses from the VCO to supply the instantaneous error signal input to the filter for each so-called video presentation unit. The VCO has a very stable center frequency which variation is limited by clipping an input control voltage to some small voltage range. Output pulses from the VCO are employed to enable decoding of the presentation units. Faster synchronization is provided at start-up by increasing, via control of the clipper, the allowable voltage range of the VCO.
Patent CA-2107552-C (CA)
Title: Use of deprenyl to maintain, prevent loss, or recover nerve cell function
Inventor: TATTON WILLIAM G
IPC: A61P25/28
Filed: 1992-03-31
Granted: 2001-08-28
Abstract: The present invention relates to the use of deprenyl or derivatives or analogues of deprenyl to maintain, prevent loss and/ or recover nerve cell function in an animal; to pharmaceutical compositions containing deprenyl adapted for such use; and, to methods for the treatment of disorders of the nervous system by maintaining, preventing loss of or recovering nerve cell function.
Patent CA-2107571-C (CA)
Title: Fly ash benefication by carbon burnout in a dry bubbling fluid bed
Inventor: COCHRAN JOSEPH W
IPC: C04B18/08
Filed: 1991-08-22
Granted: 2001-08-21
Abstract: This invention relates to an apparatus, method and product wherein fine particles of 17y ash containing carbon are oxidized in a dry, bubbling fluid bed of previously introduced fine particles of the same fly ash so chat the subsequently removed particles have reduced carbon content and are useful as pozzolan, suitable for use, without further processing, to replace a portion of ce-ment in concrete. The apparatus comprises a means for introducing said carbon containing fly ash particles into a dry bubbling fluid bed reactor (30). The dry bubbling bed reactor contains fly ash particles (31), means for introducing air into the reactor (34 and 35), means for removing beneficiated fly ash, means for removing heat from the reactor (42), and a means for removing air and combustion products from the reactor (40). The preferred conditions are a temperature of about 1300 °C to 1800 °C, air ve-locity of between at least about 0.5, but not more than about 3 ft./sec, residence time of at least about 2 minutes but up to 100 mi-nutes, volume ratio of air to fly ash of between about 1,000 and 1,500, and an excess of oxygen between about 5 % and 15 %.
Patent CA-2108068-C (CA)
Inventor: KAO WENLING
IPC: A61P29/00
Filed: 1993-10-08
Granted: 2005-06-21
Abstract: A compound of the structure (see formula I) wherein R1 and R2 are each, independently, hydrogen, -CONH-[(CR3R4)m(-A-(CR5R6)n)p]q-B;   (see formula II and III) R3, R4, R5, R6, and B are each, independently, hydrogen, alkyl, alkenyl , alkynyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkylaminoalkyl, dialkylaminoalkyl, arylalkyl, cycloalkyl, -OR7, -SR7, halogen, -CN, -NO2, -CF3, -COR7, -CO2R7, -CONHR7, -SO2R7, -OSO3R7, -NR7R8, -NHCOR7, -NHSO2R7, or Ar; R7 and R8 are each, independently, hydrogen, alkyl, arylalkyl, alkenyl, alkynyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkylaminoalkyl, dialkylaminoalkyl, cycloalkyl;    R9 and R10 are each, independently, alkyl , alkenyl, alkynyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkylaminoalkyl, dialkylaminoalkyl, arylalkyl,, -CF3, -COR7, -CO2R7, -CONHR7, -SO2R7, or Ar;      A is -CH2-, -NR7-, -O-, -S-, -SO-, -SO2-, -PR7-, -CO-, -NHCO-, -NHSO-, or -P(O)(R7)-;   Ar is phenyl, naphthyl, pyridyl, quinolyl, isoquinolyl, quinoxalyl, thienyl, thionaphthyl, furyl, benzofuryl, benzodioxyl, benzoxazolyl, benzoisoxazolyl, indolyl, thiazolyl, isoxazolyl, pyrimidinyl, pyrazinyl, . imidazolyl, benzopyranyl, benz[b]thiophenolyl, benzimidazolyl, benzthiazolyl, benzodioxolyl, piperidinyl, morpholinyl, piperazinyl, tetrahydrofuranyl, or pyrrolidinyl; wherein the Ar group may be optionally mono-, di-, or tri-substituted;      is a nitrogen containing heterocycle that may be saturated, unsaturated, or partially unsaturated, and may be optionally mono-, di-, or tri-substituted; with the proviso that R1 and R2 are not both hydrogen; m=0-6; n=0-6; p=0-1; q=0-1; or a pharmaceutically acceptable salt thereof which is useful as an immunosuppressive, antiinflammatory, antifungal, antiproliferative, and antitumor agent.
Patent CA-2112081-C (CA)
Title: Imidazole compounds, their preparation and use
Inventor: AXELSSON OSKAR
IPC: A61P9/00
Filed: 1993-12-21
Granted: 2005-02-08
Abstract: The present invention discloses compounds of the formula (see formula I) or a pharmaceutically-acceptable addition salt thereof wherein R' and R" independently of each other are hydrogen or alkyl, or R' and R"  together form a 3 to 6 membered alkylene chain; one of R1 and R2 is aryl which may be substituted one or more times with halogen, CF3; CN, OH, alkyl, cycloalkylalkyl, alkenyl, alkynyl, alkoxy, amino, nitro, sulphamoyl, tetrazolyl, CO2H, CO2-alkyl and the other of R1 and R2 is hydrogen, halogen, alkoxy, amino or alkyl; and R4; R5, R6 and R7 independently of each other are hydrogen; halogen, amino, nitro, CN; OH; CF3, alkyl or alkoxy; and n is 0 or 1; provided that neither of R1 and R2 is phenyl or substituted phenyl when n is 0.    The compounds are useful as pharmaceuticals, for example, in the treatment of ischemia, anoxia, migraine and psychosis.
Patent CA-2115433-C (CA)
Title: Systeme d'acquisition sismique pourvu de moyens de traitement decentralises
Inventor: RIALAN JOSEPH
IPC: G01V1/22
Filed: 1993-06-11
Granted: 2004-09-21
Abstract: Le système comporte une pluralité d'appareils d'acquisition (A;) pour collecter des données reçues p ~es récepteurs (Rk) et une station centrale de commande et d'enregistrement et de traitemen t. Cette station gère l'exécution par les appareils (A;) de cycles successifs d'acquisition de signaux et ensuite leur centralisation. Pour décharger la station centrale d'une partie de ses tâches dans le cas où le volume de données à centraliser et à traiter est considérable, on utilise des appareils d'acquisition qui, outre leurs processeurs de gestion (2, M1, M2) comportent des processeurs complémentaires de calcul (7, M3) programmés pour effectuer des traitements sur les données avant leur transmission: combinaisons diverses de signaux sismiques, compression de données, contrôles de qualité effectués en temps réel durant la phase de déploiement de l'équipement sismique (récepteurs sismiques et électronique des moyens d'acquisition (CAl à CAn) dans les appareils A; sur le terrain) etc., accessibles immédiatement aux opérateurs sur le terrai n. Application à la centralisation de données sismiques.
Patent CA-2120028-C (CA)
Title: Indol derivatives for the treatment of migrane
Inventor: FORNER DOLORS FERNANDEZ
IPC: C07D401/12
Filed: 1993-07-19
Granted: 1999-03-23
Abstract: A compound Or formula (I) wherein R1 and R2 each represents a hydrogen atom or an alkyl group, Z represents a ring selected from formula (II) in which n represents 4, 5 or 6; formula (111) and formula (IV) in which R1 represents hydrogen or an alkyl group and R4 represents an alkyl, methoxy, benzyl or R5NHCO group, R5 being an alkyl group; and Formula (V) in which R6 represents an alkyl group, and pharmaceutically acceptable salts thereof are useful in the treatment of migraine and other conditions. They are prepared by decàrboxylation of the corresponding indolyl-2-carboxylic acid.
Patent CA-2126053-C (CA)
Inventor: SAWADA RYOZO
IPC: A44B19/42
Filed: 1994-06-16
Granted: 1998-09-29
Abstract: A slide fastener of synthetic resin which has regularly spaced elements formed and fixed to the edge of fastener tape by the injection molding of the molten mass of the synthetic resin is disclosed.  The fastener tape is formed of polyethylene terephthalate and the elements of slide fastener are made of a polymer alloy of polybutylene terephthalate with polypropylene or polyethylene terephthalate.