baber/WOPTO huggingface dataset:
Patent CA-2118930-C (CA)
Title: Methods of impedance cardiography and heartbeat determination
Inventor: WANG XIANG
IPC: A61B5/0295
Filed: 1992-09-11
Granted: 2004-02-10
Abstract: Thoracic impedance (22, 23) and EKG signals (25a, 25b) are processed for improved resolution and accuracy. EKG  signals are adaptively processed (26, 28) by digitizing, filtering, differentiating and raising the resultant differential by a power greater than one to emphasize changes in the slope. Blocks of the processed EKG data are analyzed (30) to identify peak amplitude and to compare spacing between peak amplitudes to more accurately identify R  wave peaks. Stroke volume is determined from a thoracic impedance signal and its time derivative. Preferably, a time-frequency distribution is taken of the time derivative thoracic impedance signal after low- and high-pass filtering to identify B and X wave events which are used to determine ventricular ejection time and dZ/dt min for heart stroke volume determination by conventional methods. Alternatively, stroke volume is determined by a new relationship between a product of a pair of impedances simultaneously sensed on opposing sides of a heart at the heartbeat's peak.
Patent CA-2131283-C (CA)
Inventor: KAWANABE JUNICHI
IPC: G01F23/14
Filed: 1992-12-22
Granted: 2000-11-07
Abstract: The presence of air bubbles is detected during a dispensing of samples for determining if the volume of the sample dispensed is insufficient.     The characteristic of a presence-of-bubbles curve (101) has a difference in a pressure inside a nozzle from the characteristic of a curve (100) under a normal condition in which no bubbles exist, at the time just before the dispensing of the sample is completed.      Accordingly, it is possible to determine whether or not bubbles exist by detecting the pressure inside the nozzle at the determination time (105) and comparing the detected value with an established threshold value, and it is determined that an insufficient volume of sample has been dispensed, thereby a warning is generated.
Patent CA-2131327-C (CA)
Title: Lens changeable image scanner and lens position control device in the same
Inventor: OHTSUKA TADAO
IPC: H04N1/193
Filed: 1994-01-12
Granted: 1999-04-13
Abstract: A lens position control mechanism and method in an image scanner converts a reading line density by changing over lenses. A base rotatable in a plane parallel to an original table is provided, and the lenses are supported on the base so that their optical axes are in a plane parallel to the base surface and intersect each other at a pivot. A proper kind of lens can be arranged at a proper position by controlling the rotation of the base in such a manner that a reference pattern is provided at a position at which it is readable by an image receiving element through the lens and a lens existing in an optical path is judged on the basis of a received image of the reference pattern to confirm the position of the lens. Thereby, an image scanner capable of changing over lenses at a high precision can be obtained without increasing the height of the image scanner.
Patent CA-2137265-C (CA)
Inventor: BHARDWAJ SANJAY
IPC: A61K9/50
Filed: 1993-06-04
Granted: 2003-10-28
Abstract: A pharmaceutical granular composition and method for taste masking bitter, unpleasant tasting drugs comprising a drug core and as a taste masking agent methacrylate ester copolymers. The method comprises coating the drug cores with separate lay-ers of aqueous dispersions of the copolymers. Additionally, the coating composition may contain plasticizers and conventional excipients. The granules of the present invention can be used in the preparation of chewable tablets which have good palatability and bioavailability. Preferable copolymers are poly(ethylacrylate, methylmethacrylate) to which quaternary ammonium groups have been introduced to modify the permeability of the ester. The coating sytem of this invention releases the drug by diffusion and is influenced by drug solubility and media pH.
Patent CA-2138299-C (CA)
Title: Method for reducing tackiness of soft acrylic polymers
Inventor: LEBOEUF ALBERT R
IPC: C08J3/28
Filed: 1993-04-30
Granted: 1998-07-14
Abstract: The tackiness associated with certain soft acrylic polymers can be reduced by plasma treatment of the polymer surface. This is particularly useful with regard to intraocular lenses (IOLs), especially foldable IOLs, which are made from such soft acrylic polymers.
Patent CA-2140242-C (CA)
Title: A water distillation system
Inventor: TAJER-ARDEBILI DAVOUD
IPC: C02F1/04
Filed: 1993-07-23
Granted: 2005-03-29
Abstract: A water distillation system (10) is disclosed. The system (10) includes a boiling chamber (11) and a condensation chamber (12). Water is fed via an inlet pipe (13) to a degassing chamber (15) where volatile gases are removed from the water. The water is evaporated in the boiling chamber (11) and the vapour is in turn condensed in the condensing chamber (12). The distilled water is collected in a water storage tank (30) and is used with a pump (28) and entrainment device (27) to provide a substantial vacuum within the system (10).
Patent CA-2141233-C (CA)
Title: Method for clock calibration in a position determination system
Inventor: ANDERSON NEAL R
IPC: G01S3/02
Filed: 1995-01-27
Granted: 2004-05-11
Abstract: Timing signals are transmitted from reference transmitters through antenna/receivers (antenna preamplifier nodes) to collector nodes (C-Nodes) and to a central computer. The times of arrival of the signals at the various C-Nodes are measured by the C-Nodes, relative to each C-Node's clock. The time of arrival signals at each C-Node must be based upon a common time reference to be useful for positioning. Therefore, the central computer determines the offsets of clocks relative to a selected reference C-Node clock. The time of arrival signals are then calibrated against one another and used to adjust the time of arrival signals so that all time-of-arrivals are relative to the same reference and can be used for position determination and the clocks of the collection nodes are effectively synchronized.
Patent CA-2142464-C (CA)
Inventor: YAMADA HIROSUKE
IPC: B23K13/00
Filed: 1994-06-15
Granted: 1999-04-27
Abstract: L'invention concerne un procédé de laminage à chaud en continu consistant à découper une partie terminale arrière d'une pièce métallique précédente et une partie terminale avant d'une pièce métallique suivante, à chauffer les pièces métalliques résultantes, à augmenter leur température, à assembler par pressage les deux pièces métalliques, puis à soumettre ces dernières à un laminage de finition. Tandis que les pièces métalliques sont chauffées, soumises à une augmentation de température puis pressées, la région de chaque pièce métallique qui se trouve entre une partie de serrage de celle-ci et sa partie terminale est bloquée, ce qui empêche la déformation des parties terminales (partie terminale avant et arrière) des pièces métalliques.
Patent CA-2143735-C (CA)
Inventor: STEINKAMP MANFRED
IPC: E21B23/04
Filed: 1993-08-31
Granted: 1998-10-13
Abstract: A drill string anchor (1) for use in a well bore, the anchor having a body (11), a through bore (12) and a plurality of anchor assemblies (13), each assembly comprising an anchor member (20), a piston (2) supported within a body and a biassing means (3). The piston is radially movable in response to fluid pressure in the through bore between a first retracted position and a second extended position in which the piston drives the anchor member into contact with the wall of the well bore. The biassing means acts to provide a force biassing the piston towards the first retracted position.
Patent CA-2146004-C (CA)
Inventor: WAYNE VICKER
IPC: A47J31/40
Filed: 1992-07-31
Granted: 2001-12-25
Abstract: A machine for the automatic making of coffee or like beverages from a plurality of preformed packets (20) wherein each packet is successively delivered to a liquid delivery head (34) and further a plurality of containers are each disposed in receiving relation with water flowing through individual ones of said plurality of packets from the delivery head (34) for the collection of the formed beverage. A control assembly (12) is provided to automatically regulate the synchronized movement of the delivery head (34) into engaging relation with successively positioned packets and the supplying of liquid thereto at a predetermined time and in a predetermined quantity so that each packet, when successively and operatively position will form the correct amount of coffee in the aligned container.
Patent CA-2147510-C (CA)
Inventor: LEE KANG IN
IPC: D21H17/35
Filed: 1993-10-15
Granted: 2005-06-14
Abstract: The ammonium salt of a polymer of styrene and maleic anhydride includes 0.02 to 0.20 weight fraction copolymerized C1-C3 alkyl methacrylate to improve paper sizing properties.
Patent CA-2148539-C (CA)
Inventor: CHU DANIEL Y
IPC: G01N27/447
Filed: 1995-05-03
Granted: 1998-06-23
Abstract: Gradient gels are formed in a slab gel enclosure by introducing gel solution through a channel in one of the two or more spacers which set the thickness of the gel. The channel opens into the gel space through an aperture in the inner longitudinal edge of the spacer at approximately mid-length along the edge, and filling of the gel space with the solution is performed with the enclosure rotated onto its side. In certain embodiments of the invention, the opposing spacer contains an aperture as well, plus a channel leading from the aperture to the exterior of the enclosure, for venting of air from the gel space as the space is being filled with the gel-forming liquid.
Patent CA-2152710-C (CA)
Title: Method and apparatus for switching, multicasting multiplexing and demultiplexing an atm cell
Inventor: GANMUKHI MAHESH N
IPC: H04L12/56
Filed: 1995-06-27
Granted: 2001-07-24
Abstract: The present  invention pertains to an apparatus  for manipulating ATM cells.  The apparatus comprises a memory array in which an entire ATM cell can be read or written in one read or write cycle.  The apparatus is also comprised of a mechanism for reading or writing the entire ATM cell from or into the memory array.  The present invention pertains to a method for switching an ATM cell.  The method comprises the steps of receiving the ATM cell at a first input port of a switch from the ATM network.  Then there can be the step of storing the ATM cell in one clock cycle in a memory array of the switch.  Next there is the step of reading the ATM cell in the memory array in one clock cycle.  Next there is the step of transferring the ATM cell from the memory array to a first output port of the switch.  Next there is the step of transmitting the ATM cell from the first output port to the ATM network.  The present invention pertains to a switch for an ATM cell.  The switch comprises I  input ports which receive ATM cells from an ATM network, where I > 1 and is an integer.   The switch is also comprised of a memory array connected to the I input ports for storing an ATM cell received by one of the I input ports in one clock cycle.  The switch also comprises O output ports connected to the memory array, where O > 1 and is an integer.  One of the O output ports transmit an ATM cell which is received from the memory array to the ATM network.  Additionally, the switch comprises a controller connected to the memory array,  I input ports and O output ports for controlling the storage of an ATM cell from one of the input ports into the memory array in one clock cycle.   The switch can be used for normal switching operation, multicasting, demultiplexing or multiplexing.
Patent CA-2156922-C (CA)
Title: Fluorocarbon emulsions with reduced pulmonary gas-trapping properties
Inventor: WEERS JEFFRY G
IPC: A61K47/06
Filed: 1994-03-01
Granted: 2007-05-22
Abstract: A fluorocarbon emulsion which exhibits reduced pulmonary gas-trapping properties in species-sensitive laboratory animals is disclosed.  Additionally, the fluorocarbon component(s) exhibit short organ retention time(s). The emulsion includes an aqueous phase, an emulsifier, and a fluorocarbon (or fluorocarbon composition), having a vapor pressure of less than about 8 torr to reduce pulmonary gas-trapping, and having an organ retention half life of less than about 6 weeks and more preferably less than about 3 to 4 weeks.
Patent CA-2160852-C (CA)
Inventor: NINACS MICHEL D
IPC: F23J13/04
Filed: 1995-10-18
Granted: 1999-08-10
Abstract: A   high   temperature   rectangular   exhaust   duct expansion joint structure for securement to a high temperature gas stream and particularly,  but not exclusively,  a turbine engine   exhaust   duct.     The   support   flange   structure incorporated in the duct has a connecting flange which defines opposed  side  walls  of  the  rectangular  support  flange structure.   A T-shape radial web is connected to an outer surface  of  the  connecting  flange.   The  radial  web  has  a vertical  wall  component  and  a  transverse  end  component extending beyond opposed sides of the vertical wall component and  is  connectable  to  a  flexible  membrane  of  the  joint structure.   The support flange has reinforced corner sections wherein the connecting flange and the vertical wall component of the T-shape radial web are of increased thickness to reduce thermal  stress  in  the  corner  sections  and  to  effectively redistribute the stress in the support flange.
Patent CA-2165998-C (CA)
Title: Environmentally friendly coating compositions
Inventor: MOSSER MARK F
IPC: C09D1/00
Filed: 1995-12-22
Granted: 2001-03-27
Abstract: An aqueous phosphoric bonding solution and coating composition slurry which are environmentally friendly in that they are generally free of molybdate or chromium. Yet the solution is stable with respect to inorganic metal particles, especially aluminum which are admixed to the bonding solution for the preparation of the coating slurry. The metal coated parts and the method of coating the parts with the coating composition are also described. The parts have very satisfactory properties.
Patent CA-2166612-C (CA)
Inventor: BERRIGAN MICHAEL R
IPC: D04H1/46
Filed: 1994-08-17
Granted: 2005-02-22
Abstract: Filter media is provided. The filter media comprises a web (30) of melt blown microfibers having one surface substantially flat (33) and the other surface having periodic wrinkle-like undulations (32). A method of making the filter media is also provided. The filter media is useful in electret filters when charged.
Patent CA-2177711-C (CA)
Inventor: OUDERKIRK ANDREW J
IPC: G02F1/1335
Filed: 1994-12-20
Granted: 2005-10-04
Abstract: A multiple layer reflective polarizer (12) is described. This element is pla ced between an optical cavity (24) and an LCD module (16) to form an optical display. The reflective polarizer reflects some ligh t into the optical cavity (24) where it is randomized an d may ultimately emerge with the correct polarization to be transmitted out of the display.
Patent CA-2181985-C (CA)
Title: Compositions de metronidazole a liberation modifiee et leurs procedes de fabrication et d'utilisation
Inventor: DESAI SUBHASH
IPC: A61K9/22
Filed: 1995-01-04
Granted: 2000-12-05
Abstract: L'invention se rapporte à des compositions pharmaceutiques présentant un profil à libération modifiée pour une dose quotidienne de métronidazole, à leurs procédés de fabrication, et à des procédés de traitement d'une infection microbienne au moyen d'une dose quotidienne des compositions pharmaceutiques de cette invention. Les compositions administrées une fois par jour présentent une bioéquivalence substantielle par rapport au métronidazole à libération immédiate administré trois fois par jour. Les compositions de l'invention comprennent: (a) une première part de métronidazole d'environ 59 % en poids à environ 79 % en poids; (b) environ 1,5 % en poids à environ 3 % en poids d'un copolymère d'ester d'acide poly(meth)acrylique, insoluble, aqueux qui est perméable à l'eau, expansible à l'eau et indépendant du niveau de pH; (c) environ 0,1 % en poids à environ 2 % en poids d'un agent anti-adhésif; (d) 0 à environ 23 % en poids d'un premier diluant pharmaceutique soluble, aqueux; (e) 0 à environ 23 % en poids d'un second diluant soluble, aqueux qui est approprié pour constituer un comprimé pharmaceutique lorsqu'il est comprimé avec les granules de (a), le second diluant soluble, aqueux étant identique ou différent du premier diluant soluble, aqueux; (f) 0 à environ 20 % en poids d'une seconde part de métronidazole; (g) 0 à environ 0,2 % en poids d'un agent de glissement; et (h) 0 à environ 2 % en poids d'un lubrifiant. La composition comprend des granules renfermant le métronidazole comprenant (a), (b), (c) et (d), la somme des pourcentages en poids du métronidazole obtenue par (a) et (f) est comprise entre environ 72 % en poids et environ 79 % en poids, et la somme des pourcentages en poids du diluant soluble, aqueux obtenue par (d) et (e) est comprise entre environ 16 % en poids et environ 23 % en poids.
Patent CA-2184053-C (CA)
Title: Process for preparing pentenals
Inventor: WIEBUS ERNST
IPC: C07C45/49
Filed: 1996-08-23
Granted: 2000-02-29
Abstract: Pentenals are prepared by hydroformylating 1,3-butadiene dissolved in a medium which is inert under reaction conditions. The reaction is carried out in the presence of an aqueous catalyst phase comprising a rhodium/phosphine complex as catalyst.
Patent CA-2185486-C (CA)
Inventor: GAYLORD JOHN F JR
IPC: A61F5/02
Filed: 1996-09-13
Granted: 2002-11-26
Abstract: A back support device for supporting a wearer's back during various activities is described. The back support device includes an inner belt, and outer substantially inelastic belt, and a semi-rigid abdominal plate positioned beneath the outer substantially inelastic belt.  The back support device is designed to be positioned circumferentially about a wearer's waist or lower torso region, such that the abdominal plate overlies an abdominal region of the wearer, with the substantially inelastic belt securing the abdominal plate firmly in position thereon, in order to increase the intraabdominal pressure and thereby support the wearer's lower spine.  The inner belt is desirably substantially elastic in order that it closely conforms to the wearer's body and assists in increasing the intraabdominal pressure.  The back support device also desirably includes a lumbosacral pad, which can be positioned within a pocket located on a rear portion of the back support device, to thereby correspond with the wearer's lower spinal region and to provide effective contact between the inelastic belt of the device and the spine due to the spine's natural curvature in the lumbar region.
Patent CA-2186819-C (CA)
Title: Device for and method of modifying the spectral characteristics of optical signals
Inventor: ARTIGLIA MASSIMO
IPC: H04B10/29
Filed: 1996-09-30
Granted: 1999-09-28
Abstract: The modification is accomplished on the basis of the solution known as spectral inversion (or optical phase conjugation).  The device (1) comprises a medium, such as typically a dispersion shifted optical fibre  (4),  into which the signal to be modified is injected together with a pump signal at such a level as to induce modulation instability in the fibre (4).  At the output of fibre (4) a spectrally inverted optical signal is available, which signal is translated in wavelength and is obtained with high conversion efficiency.  Preferably, in order to avoid stimulated  Brillouin  scattering,  the  pump  signal  is subjected to spectrum broadening, for instance by means of a modulator (5).  (Figure 1)
Patent CA-2186915-C (CA)
Title: Prevention and treatment of ischemia-reperfusion and endotoxin-related injury using adenosine and purino receptor antagonists
Inventor: NEELY CONSTANCE F
IPC: A61K31/52
Filed: 1995-03-24
Granted: 2008-06-10
Abstract: Methods of preventing or treating ischemia-reperfusion injury in an organ by administration of a composition containing a selective A1 adenosine receptor antagonist and/or a P2x purinoceptor antagonist are provided. Method of preventing or treating endotoxin-related lung injury by administration of a composition containing a selective A1 adenosine receptor antagonist and/or a P2x purinoceptor antagonist are also provided.
Patent CA-2187923-C (CA)
Inventor: PUHL LARRY CHARLES
IPC: H04L9/08
Filed: 1996-01-16
Granted: 2000-02-22
Abstract: Blind access (100, 300, 400) to a desired encryption key of a predetermined first goup member is provided to a second group. The first group encrypts a plurality of first group member encryption keys using a predetermined algo-rithm and transfers to the second group, the encrypted plural-ity of first group member encryption keys with corresponding unencrypted first group member identification fields, IDs, and a list of IDs corresponding to the first group members. The desired ID-free encryption key is selected and encrypted by the second group using a predetermined algorithm. The dou-bly encrypted key is transferred to the first group, decrypted by the first group and transferred to the second group for decryption. Thus, the encryption key is provided without knowledge to the first group of which member's encryption key is being examined and with knowledge to the second group of only the desired encryption key.
Patent CA-2190729-C (CA)
Inventor: LISKOWITZ JOHN W
IPC: C04B28/02
Filed: 1995-05-19
Granted: 2007-12-04
Abstract: L'invention concerne le béton, le mortier et autres mélanges durcissables comprenant du ciment et des cendres volantes, et s'utilisant dans la construction. L'invention concerne un procédé de prévision de la résistance à la compression d'un tel mélange durcissable, ce qui est très important pour la planification d'un projet. L'invention concerne aussi des mélanges durcissables comprenant du ciment et des cendres volantes et pouvant avoir une résistance à la compression plus élevée que celle de mélanges durcissables ne contenant que du béton sur la durée pertinante à la construction. Dans un mode spécifique de réalisation, on a établi une formule permettant la prévision précise de la résistance à la compression du béton contenant des cendres volantes sur 180 jours. Dans d'autres examples spécifiques, du béton et du mortier contenant environ 15 % à 25 % de cendres volantes en substitution du ciment et pouvant satisfaire les spécifications techniques pour la construction de bâtiments et de routes sont également décrits. Ces matériaux peuvent réduire considérablement les coûts de construction.
Patent CA-2198860-C (CA)
Title: Absorbent article having a pocket cuff with an apex
Inventor: DREIER KIMBERLY ANN
IPC: A61F13/49
Filed: 1995-09-01
Granted: 2001-04-10
Abstract: A disposable diaper having a waist pocket cuff is disclosed. The pocket cuff has an open edge having an apex. The open edge extends between ends joined to the distal edges of barrier cuffs. The open edge is elastically biased to form the open edge apex along the longitudinal centerline of the disposable diaper.
Patent CA-2199755-C (CA)
Inventor: TAICHER GERSH ZVI
IPC: G01V3/32
Filed: 1997-03-12
Granted: 2006-06-27
Abstract: An electromagnetic wellbore logging tool including an elongated sonde adapted for traversing the wellbore, a source of alternating current, an antenna connected to the source of alternating current, and a receiver circuit connected to the antenna. The receiver circuit provides an output corresponding to electromagnetic signals induced in the antenna. The invention includes at least one insulating insert disposed in an annular space between the exterior of the sonde and the wall of the wellbore. The insert extends in a direction so as to segment the paths of eddy current which would otherwise flow in the annular space. In a preferred embodiment, the logging tool includes a nuclear magnetic resonance apparatus having a longitudinal dipole antenna. The insulating inserts extend along the longitudinal axis of the tool so as to segment eddy current paths perpendicular to the longitudinal axis of the tool.