baber/WOPTO huggingface dataset:
Patent CA-2221261-A1 (CA)
Title: Proper frequency tracker for fiber optic sensing coil
Inventor: STRANDJORD LEE K
IPC: G01C19/72
Filed: 1996-06-07
Abstract: A device for providing a bias modulation at a proper frequency to the counterpropagating light waves in the sensing coil of an interferometric fiber optic gyroscope. The photodetector (13) detects the light which has exited the sensing loop, and converts it to an electrical signal that is demodulated by two phase sensitive detectors. One phase sensitive detector (36) demodulates the signal that is in phase with the bias modulation signal and the other phase sensitive detector (35) demodulates the quadrature signal with respect to the modulation signal, and controls the frequency of the bias phase modulator driver (60) so as to reduce the quadrature to a minimum and to keep the modulator frequency at the proper frequency of the sensing coil (10).  Increased intensity modulation can be attained with a DC voltage applied to an electrode of the modulator to produce the quadrature signal. In the digital implementation, higher harmonics are introduced to the modulator to increase the quadrature signal for improved sensitivity of the proper frequency of the sensing coil.
Patent CA-2221513-A1 (CA)
Title: Fluorochemical liquid augmented cryosurgery
Inventor: SHAFFER THOMAS H
IPC: A61B18/00
Filed: 1996-05-21
Abstract: This invention is a method for cryogenic treatment of a lesion (20) which comprises the steps of delivering a fluoro-chemical liquid to the lesion (20), placing at least one cryoprobe (26) into the lesion (20), and circulating a cryogenic fluid causing an ice ball (30) to form in a vicinity around the cryoprobe (26), wherein the ice ball (30) obliterates at least a portion of the lesion (20). The fluoro-chemical liquid is utilized to augment the cryosurgical procedure and is perfused or injected into and/or around the lesion site prior and/or during the application of a cryprobe (26) to the site. In one embodiment of the invention, the fluoro-chemical liquid acts as a contrast agent to enhance real time medical imaging of the lesion area and modifies the environment in and around the lesion area. In another embodiment of the invention, the fluoro-chemical liquid augments cryosurgical procedures by controlling the size and shape of ice balls (30) formed during the cryosurgical procedures. In this embodiment, a fluoro-chemical liquid with a properly chosen thermal conductivity and freezing point is utilized. Depending on the thermal properties chosen, the liquid either augments freezing of the target area and/or promotes thermal conduction to freeze larger areas, or limits the freezing of the target area and reduces thermal conduction. In an non-cryoprobe embodiment, the liquid is cooled to a temperature below the freezing point of the biological tissue. The cooled liquid is then infused into or around the cystic lesion to produce ablation.
Patent CA-2224455-A1 (CA)
Title: After potential removal in cardiac rhythm management device
Inventor: LINDER WILLIAM J
IPC: A61N1/37
Filed: 1996-06-19
Abstract: An apparatus effectively removes after potential occurring after a electrical pulse is delivered in a cardiac rhythm management system such as a pacemaker system or cardioverter/defibrillator system having an electrode used for both sensing electrical activity of the heart and carrying the electrical pulse to the heart and a sense amplifier for detecting the electrical activity from the electrode. The apparatus includes a lowpass filter coupled to the electrode to filter the sensed electrical activity. A highpass filter is coupled between the lowpass filter and the sense amplifier to further filter the electrical activity passed from the lowpass filter. Equilibrium circuitry is included to allow passive filter components of the lowpass filter and the highpass filter to return to an equilibrium state following delivery of the electrical pulse.
Patent CA-2225518-A1 (CA)
Inventor: LE PROVOST MARCEL
IPC: G01N21/89
Filed: 1995-06-16
Abstract: Flaws may be detected by illuminating a surface with two plane beams (13, 14) of coherent light at a wavelength close to the ends of the visible spectrum. The two beams are generated, e.g., by laser diodes (11, 12) and lie in a single plane (P) that is substantially orthogonal to the product surface (2), so that a single light trace (T) is formed on said surface. In addition, said beams are angled towards one another and have substantially the same angles of incidence (i). The illumination along said trace is measured in a direction (18) orthogonal to said surface and at said wavelength, e.g. by means of a linear array camera (17). A sharp localised reduction in illumination indicates the presence of a flaw. The method may be used to detect pinholes or scratches on as-cast metallurgical products from continuous casting processes.
Patent CA-2230989-A1 (CA)
Inventor: STRID ERIK
IPC: A47F1/10
Filed: 1996-09-03
Abstract: A dispenser for sweets comprises a container (1), which, at the top, has an opening (6) for filling sweets which can be covered by a lid (7) and which, at the bottom, presents a part (24) protruding from a front of the container for receiving limited amounts of sweets through a bottom opening (13) in the lower part of the container. A coarse threaded screw (15) being arranged in connection with the bottom opening (13) and having an operating device (18) within reach from the outside, by means of which the screw is, when necessary, rotatable so as to feed out sweets from the container. The feed screw (15) extends obliquely outwards/upwards from the opening (13) together with a chute (19) arranged under the screw on which sweets fed-out is forced to move upwards to a highest point (22) at a distance from the bottom opening before they finally fall down on the receiver part (24).
Patent CA-2232666-A1 (CA)
Title: Multiplexors with a flat top spectral channel shape
Inventor: DUCELLIER THOMAS
IPC: H04J14/02
Filed: 1998-03-18
Abstract: A multiplexing/demultiplexing optical circuit provides a demultiplxed output spectrum of channels having a flat amplitude response without sacrificing optical power. A  phased array implementation and a diffraction grating implementation both rely on a first dispersion of the beam to be demultiplexed and subsequent local inversion of the sub-beams. After pairs of sub-beams are spatially inverted they are once again provided to a dispersion element or array to provide output channels having a substantially "flat-tops".
Patent CA-2234171-A1 (CA)
Title: Insulated synthetic resin container and insulated synthetic resin lid
Inventor: YAMADA MASASHI
IPC: A47J41/00
Filed: 1997-07-29
Abstract: A heat insulating container of a synthetic resin wherein inner and outer container members (4, 3) of a synthetic resin are joined together in a united state with a hollow space therebetween to form a container of a double walled structure. A gas of a low thermal conductivity is sealed in the hollow space (5) in the container to form a heat insulating layer (6). A gas replacement through hole (7) is made in the central portion of one of the inner and outer container members (4, 3), and a projection (14) which projects toward the wall in which the through hole (7) is made, or the wall opposed to the through hole, and which is adapted to prevent the inner and outer container members from being brought into close contact with each other is provided in the vicinity of the through hole (7). During the evacuation of the hollow space (5) to seal the gas therein, the inner and outer container members (4, 3) are not deformed and brought into contact with each other, efficiently evacuating the hollow space. Thus a container having an excellent heat insulating performance is provided.
Patent CA-2234439-A1 (CA)
Inventor: NEUSTADT ALF
IPC: H05K7/20
Filed: 1998-05-05
Abstract: In a cabinet (1) for telecommunications engineering, with a frame rack containing at least one module carrier (2) designed to receive plug-in units, and a ventilating installation for cooling the plug-in units, the ventilating installation comprises at least one fan insert (13) with several vertically blowing axial fans, which can be plugged in and integrated into the module carrier (2). The fan insert (13) is located under transverse supports of the module carrier (2) and has at least one plug connector at the rear, which makes contact with a secondary plug connector provided on the rear wiring panel (10).
Patent CA-2237239-A1 (CA)
Inventor: CHATTERJI JITEN
IPC: C09K8/50
Filed: 1998-05-08
Abstract: Polymeric well completion and remedial compositions which form highly pliable and durable impermeable masses of desired rigidity and methods of using the compositions are provided.          The compositions are basically comprised of water,  a water soluble polymerizable monomer, a polymerization initiator and an oxygen scavenging agent.  The compositions are usually foamed and can contain a gelling agent and a solid filler material to increase the density and/or rigidity of the impermeable mass formed and/or a vulcanizable rubber latex, vulcanizing agent and vulcanizing  activator  to  provide  durability  and  other properties.
Patent CA-2238133-A1 (CA)
Inventor: MORAN KYMBERLY
IPC: B65D71/00
Filed: 1998-05-20
Abstract: A packaged product comprising a plurality of individual containers, a paperboard carrier wall disposed along a portion of the periphery and shrink wrapping.  The container wall preferably has an open top and bottom and also has two free edges spaced from each other so as to leave a portion of the periphery uncovered by the wall.
Patent CA-2240398-A1 (CA)
Inventor: SEKULA BERNARD CHARLES
IPC: A23L1/308
Filed: 1996-12-12
Abstract: Reduced calorie reconstituted milk and milk products are prepared by replacing some or all of the fat in reconstituted milk with a fatty acid-esterified propoxylated glycerin composition which has a solid fat index as measured by dilatometry of more than about 25 at 92 °F, preferably less than about 70 at 92 °F, and less than about 10 at 104 °F. The reconstituted milk and milk products of the invention have a smooth texture, excellent stability and significantly reduced calories.
Patent CA-2240399-A1 (CA)
Title: A single mode resonant cavity
Inventor: TRUMBLE FRANCIS ROBERT
IPC: F01N3/08
Filed: 1996-12-11
Abstract: A single mode resonant cavity is adapted to absorb energy via a single excitation mode in a plurality of overlapping absorption bands having different respective resonant frequencies, thereby increasing the resonant bandwidth of the cavity. The high Q-factor cavity may form part of a microwave powered catalytic converter for exhaust gas, and has the advantage that as the cavity warms up and physically expands the coupling efficiency between the cavity and a relatively narrow waveband microwave source remains good.
Patent CA-2241213-A1 (CA)
Title: Antiviral agent
Inventor: FERNANDEZ-POL JOSE A
IPC: A61K45/06
Filed: 1996-12-20
Abstract: An antiproliferative and antiviral preparation of a metal ion chelating agent such as picolinic acid or derivatives thereof. The chelating agent is provided in an ointment base or in solution for topical or intravaginal use. The topical preparations have antiviral and antiproliferative effects and are used in the treatment of warts, psoriasis, skin cancers and other proliferative diseases and in the prevention of sexually transmitted diseases such as genital warts, herpes and AIDS.
Patent CA-2242714-A1 (CA)
Title: Antenne a polarisation circulaire un sens
Inventor: PAUCHET MICHEL
IPC: H01P1/17
Filed: 1998-07-27
Abstract: L'invention concerne une antenne à polarisation circulaire un sens, du type comprenant un élément rayonnant (8) associé à un filtre fréquentiel (1, 2). L'antenne conforme à l'invention se caractérise en ce qu'elle comprend un dispositif sélectif en polarisation (5, 6) disposé en transition entre le filtre fréquentiel et un moyen polariseur (7) adapté pour assurer une polarisation circulaire de l'onde. Ce dispositif sélectif multimode est adapté pour (1) permettre la propagation d'un mode aller initial (Ma), (2) laisser passer en émission un des modes retour (Rh) induit par le moyen polariseur, et (3) réfléchir l'autre mode retour (Rv). Au niveau du polariseur, l'onde composée du mode initial et des modes retour réfléchis renforce la polarisation circulaire de l'onde initiale. Une telle antenne peut être fabriquée d'un seul tenant avec un encombrement et un poids réduits par rapport aux antennes connues à polarisation circulaire un sens.
Patent CA-2246771-A1 (CA)
Title: Hot runner system for coinjection molding
Inventor: MOSS MARK D
IPC: B29C45/16
Filed: 1998-09-01
Abstract: A coinjection molding system for injecting skin and core material into a mold cavity. The system includes a three position actuator for moving a valve pin into a closed position in which neither skin nor core flow is permitted, a middle position in which only skin flow is permitted, and an open position in which skin and core flow is permitted. The actuator includes a first piston slidably mounted in an actuator housing, and a second piston, attached to the valve pin, slidably mounted within the first piston. A shut-off is provided in the manifold for preventing skin flow to a particular nozzle during sequential gating.
Patent CA-2248332-A1 (CA)
Inventor: SUZUKI MINORU
IPC: B41J2/04
Filed: 1998-09-22
Abstract: An ink transfer printer comprises a thermal head that has an ink reservoir provided on a top surface of a housing and a film provided on a bottom surface of the housing. A space is formed by the film and the bottom surface. An ink passage is formed in the housing to communicate the ink reservoir with the space. Porous glaze is provided on the bottom surface to face the ink passage. Heating elements are provided on the porous glaze. The ink kept in the ink reservoir is supplied to the space through the ink passage and the porous glaze. The film has perforated pore , which are substantially closed to block the ink when the heating elements are not heated. When the heating elements are heated, the film is deformed to eject the ink through the pores.
Patent CA-2248950-A1 (CA)
Inventor: K RKI ARI
IPC: C07J75/00
Filed: 1997-03-14
Abstract: The invention relates to a process for catalytic hydrogenation of non-hormonal unsaturated plant steroids and unsaturated plant-based fatty acids and triglycerides thereof using a metal catalyst bound to a polymer support containing grafted groups. The invention also relates to regeneration of a used catalyst.
Patent CA-2250165-A1 (CA)
Inventor: SAITO YOSHIKIYO
IPC: B32B27/36
Filed: 1997-03-24
Abstract: The present invention provides a card base which is degradable by microbes in natural environment. The card base is excellent in properties necessary for card bases, such as tensile strength, impact strength, flex temperature, heat resistance, resistance to thermal expansion and contraction, blocking resistance and humidity resistance, and has rigidity, bending resistance and durability. The card base contains, as essential components, a 3-hydroxybutylate/3-hydroxyvalerate copolymer and a lactic acid polymer, and, where necessary, a polycaprolactone or a high-molecular aliphatic polyester. The card base has a single-layer structure, or a sandwich structure further having overlay layers comprising a composition containing, as essential components, a lactic acid polymer and either or both of a polycaprolactone and a high-molecular alphatic polyester.
Patent CA-2254471-A1 (CA)
Inventor: SADOSKI WILLIAM J
IPC: B23B51/10
Filed: 1998-11-19
Abstract: A debur tool for simultaneously removing burrs from holes in a workpiece, such as those in a header box tube sheet, also has a beveled surface adjacent a cutting edge for chamfering an edge of the hole from which a burr is removed. The cutting edge ishorizontally offset from a shaft carrying the cutting edge.
Patent CA-2255775-A1 (CA)
Title: Method for producing plate-shaped components or combinations of components
Inventor: DE ROOIJ ROBERT
IPC: H01M8/02
Filed: 1997-05-29
Abstract: Method for producing a plate-shaped component. This involves the preparation of a first suspension comprising an alcohol as the dispersing medium and a base material for the plate. A second suspension is prepared which comprises binder, water as the gelling agent and an alcohol as the dispersion medium, possibly with the addition of Li/K or Li/Na carbonate. These two suspensions are mixed together, possibly with the addition of fibres. After mixing, a plate-shaped component is fabricated with the aid of the "tape casting"  technique.
Patent CA-2257073-A1 (CA)
Inventor: LONATI ETTORE
IPC: A41B9/06
Filed: 1998-12-22
Abstract: A method for manufacturing a dressing item such as an undershirt, body suit or the like with a circular knitting machine,  and an item obtained thereby,  said method comprising:  at least one first step,  during which an annular border is formed which constitutes the neck of the item;  at least one second step,  during which a first tubular portion of knitting is formed starting from the annular border; at least one third step, during which a second tubular portion of knitting is formed to continue the first tubular portion of knitting; and a fourth step, during which a completion portion of the item is formed. The annular border is formed by means of at least one prestretched elastic yarn and/or by using a limited number of needles with respect to the number used to form the first tubular portion of knitting and/or the second tubular portion of knitting, so as to obtain an item with a neck having a smaller diameter than the remaining part of the item and without seams in the shoulder region.
Patent CA-2261172-A1 (CA)
Inventor: SMITH IAN
IPC: A61M15/00
Filed: 1997-07-07
Abstract: A drug powder inhaler has a cover plate (50) pivotally attached to a lid (38) on an inhaler housing (32). A lever is pivotally attached to the cover plate.  A blister pack disk (42) is rotatably mounted on the housing under the cover plate. A powder duct (122) in the housing extends from a staging chamber (124) underneath one end of the lever to an aerosolizing chamber (120). An actuator (146) in the housing is pressed to shear open a blister (44) on the blister pack disk, and thereby deliver the drug dose contents of the blister into the staging chamber. A switch (170) senses pressure in the mouthpiece, and switches on a motor (160) spinning an impeller (162) within the aerosolizing chamber when inhalation is detected.
Patent CA-2264021-A1 (CA)
Inventor: IACCINO LARRY L
IPC: C10G67/06
Filed: 1997-08-22
Abstract: The present invention relates to a process for heteroatom removal, particularly during process excursions, from petroleum and chemical hydrocarbon streams. The invention is comprised of at least two zones through which the hydrocarbon stream and a hydrogen containing treat gas flow. The first zone contains a bed of heteroatom hydroprocessing catalyst in contact with hydrogen-containing treat gas and the second zone contains heteroatom sorbent material(s) through which the hydrocarbon stream flows countercurrent to the up flowing hydrogen-containing treat gas.
Patent CA-2264484-A1 (CA)
Title: Human plasma hyaluronidase
Inventor: WONG TIM M
IPC: C12P21/08
Filed: 1997-10-07
Abstract: The invention is based on the discovery of methods for purification of an acid active hyaluronidase found in human plasma (hpHAse), including both biochemical and immunoaffinity purification methods. The method of immunoaffinity purification of the invention is based on the discovery of a method for identifying antibodies that specifically bind native hpHAse (anti-native hpHAse antibodies), and anti-native hpHAse antibodies identified by this screening method. The invention also features an assay for sensitive detection of HAse activity using biotinylated hyaluronic acid (bHA).  Purification and characterization of hpHAse lead to the inventors' additional discovery that hpHAse is encoded by the LuCa-1 gene, which gene is present in the human chromosome at 3p21.3, a region associated with tumor suppression.  The invention additionally features methods of treating tumor-bearing patients by administration of hpHAse and/or transformation of cells with hpHAse-encoding DNA.
Patent CA-2265737-A1 (CA)
Title: Exhaust device for vehicle
Inventor: SUGANO TADASHI
IPC: B62M7/02
Filed: 1997-10-31
Abstract: A first muffler (4) is connected to a rear end portion of the exhaust pipe (2) extending from a single-cylinder engine toward one side of a rear portion of the vehicle body and is provided on one side of the vehicle body. A second muffler (5) is provided on the other side of the vehicle body opposite to the first muffler (4) through a connecting pipe (6). An outer side surface near the front end portion of the first muffler (4) and the second muffler (5) are covered with first and second covers (7) and (8) both plated. Each of the exhaust pipe (2) and the first and second mufflers (4) and (5) have double-pipe structure with outside plated. Further, a front end portion of the second cover (8) is curved toward the center of the vehicle body, and a phantom line as a continuous frontward extension from the front end portion of the second cover (8) is positioned before the axis of the connecting pipe (6).
Patent CA-2266202-A1 (CA)
Title: One piece liner member for use in railway coupling devices
Inventor: DAUGHERTY DAVID W JR
IPC: F16C11/06
Filed: 1999-03-18
Abstract: A connection assembly including a one piece liner member for use in a connection assembly utilized in either an articulated coupling arrangement and/or a slackless drawbar arrangement for connecting together adjacently disposed ends of a pair of railway vehicles in a semi-permanent manner is provided. The one piece liner member comprises a substantially solid member having a substantially spherical inner surface for positioning around a predetermined portion of a spherical member of a connection assembly. The male connection member of the railway coupling device includes an aperture having a predetermined configuration and an inner surface formed by this aperture. A retainer member is provided for engaging at least a portion of the inner surface of the male connection member to form a substantially spherical inner surface. An outer surface of the one piece liner member engages this substantially spherical inner surface and enables movement of the male connection member in relation to a female connection member in both a vertical direction and a horizontal direction over a predetermined range of angles.
Patent CA-2266418-A1 (CA)
Inventor: YOUNGQUIST ROBERT SCOTT
IPC: C11D3/00
Filed: 1997-09-23
Abstract: L'invention se rapporte à des protéines de fusion et à leurs utilisations, ainsi qu'aux gènes codant lesdites protéines de fusion. L'invention se rapporte également à des compositions de nettoyage contenant lesdites protéines de fusion.
Patent CA-2268614-A1 (CA)
Title: Precipitated calcium carbonate and method for the production thereof
Inventor: VIRTANEN PENTTI
IPC: C09C1/02
Filed: 1997-10-14
Abstract: The invention concerns precipitated calcium carbonate products containing polynuclear regular agglomerates having a number of calcium carbonate particles (aggregates) attached to each other and having a particle size of about 40 to 200 nm. According to the invention, these products are prepared by adjusting the Z potential of the calcium carbonate suspension to -1...-20 mV by adjusting the pH of the suspension to 6.5...9.5. The pH of the calcium carbonate slurry obtained by causticizing is adjusted to a desired value in a box filter, where after the suspension is stirred by a heavy-duty mixer such that it is subjected to differences of about 50 to 200 m/s in peripheral speed. The products according to the invention have good opacity and are very well suited for coating paper.