baber/WOPTO huggingface dataset:
Patent CA-2067637-C (CA)
Title: System for distributing radio telephone signals over a cable television network
Inventor: LAPPINGTON JOHN
IPC: H04W88/08
Filed: 1992-04-30
Granted: 1997-11-18
Abstract: A system for distributing remote telephone traffic between a base station and remote antenna site is disclosed.  The base station and remote antenna sites are connected via a cable television network.  The base station receives from a public telephone network parallel channels of outbound voice signals for radio telephones operating within the cellular areas of the remote antenna sites.   The base station will digitize each of these outbound telephone signals, and time compress them to  fit  in a transmit frame having the length of a standard channel transmit frame of a radio telephone system. The transmit frame is modulated on a subcarrier and applied to the cable television network.  A plurality of remote sites are connected to the cable television network and receive and rebroadcast  digitized  voice  signals  to  radio  telephones operating  within  their  cellular  areas.    Inbound  serial channel data received from a radio telephone is inserted in a serial  receive  data  frame  along with  other channel  data received from other radio telephones operating in this cell. A second subcarrier is modulated with the receive data frame and applied to the cable television network for transmission upstream  to  the  base  station.    The  base  station  will demodulate the inbound receive frame and apply the digitized voice signals to the public telephone network to complete a telephone communication link between the radio telephones and public telephone network.
Patent CA-2070860-C (CA)
Title: Electrical heating resistance using resistive elements made of carbon/carbon composite material
Inventor: MAUMUS JEAN-PIERRE
IPC: H05B3/14
Filed: 1992-06-09
Granted: 1997-09-30
Abstract: The resistive elements are made up of strips of carbon/carbon composite material that are interconnected by connection pieces that are likewise made of carbon/carbon composite material and that serve both for making electrical connections and for making mechanical connections between the strips. The strips and the connection pieces are assembled together at leastin part by means of their shapes. The resistive elements may be coated in a layer of pyrocarbon.
Patent CA-2075050-C (CA)
Title: Specificity and convenience of the polymerase chain reaction
Inventor: BLOCH WILL
IPC: C08J7/046
Filed: 1991-02-15
Granted: 1998-10-06
Abstract: Improvements to the polymerase chain reaction (PCR), a process for in vitro enzymatic amplification of specific nucleic acid sequences, can be achieved by changing the way that PCR reagents are mixed and the enzymatic reaction is started and by the replacement of mineral oil, commonly used as a vapor barrier to minimize solvent evaporation, by a grease or wax. The use of such mixtures allows for the delay of reagent mixing until the first heating step of a PCR amplification, thereby reducing the enzymatic generation of nonspecific products which occurs when a complete mixture of PCR reagents, with or without test sample, stands at room temperature or below. These mixtures increase the shelf-life of PCR reagents and increase protection of the laboratory environment against contamination by PCR product.
Patent CA-2087057-C (CA)
Title: Nestable mixing bowl with integral handle
Inventor: BRAZIS WILLIAM E
IPC: A47J43/28
Filed: 1993-01-11
Granted: 2004-06-08
Abstract: A mixing bowl set is disclosed comprising nestable bowls (2,4), each having a radiussed sidewalls (8), and a downturned upper rim flange (14). The rim flange (14) has a lower edge 20 which is spaced apart from the sidewall (8) a distance which varies from a maximun at the rearward end (24) of the bowl to a minimum at the forward end (26). Accordingly, a channel (22) is defined below the rim flange (14) which is wider at the rearward end, sufficiently so to admit the digits of a hand, whereby making the rearward portion of the flange (14) a handle for the bowl. A pourspout (28) is provided in the forward end of the rim flange (14) and is configured to be entirely below flange (14). Accordingly, there are no projections beyond the rim flange of the bowl throughout its entire circumference which could interfere with the nesting of one bowl into a like-configured larger bowl.
Patent CA-2093440-C (CA)
Title: Cell for measuring electrical conductivity
Inventor: SHIRANITA AKIRA
IPC: G01R27/02
Filed: 1992-07-31
Granted: 1999-04-20
Abstract: In a cell for measuring electrical conductivity, a container (2) and electrodes (1) are made of ceramics having high corrosion-resistant property.  Insulating ceramics are used for the container (2), and conductive ceramics having resistance value of several k .OMEGA. ~ cm or less is used for the electrodes (1).  The ceramics are far superior to glass in corrosion resistant property and mechanical strength under normal as well as high temperature conditions.  Further, the cell is produced at lower cost than the one made of precious metal and has high corrosion resistant property and can be used under strong acid or strong alkaline conditions.  It has high mechanical strength and can be used under high pressure and high temperature conditions and produced at low cost because precious metal is not used for the electrodes.
Patent CA-2095222-C (CA)
Title: Device for controlling beams of particles, x-ray and gamma quanta and uses thereof
Inventor: KUMAKHOV MURADIN A
IPC: G21K1/00
Filed: 1991-10-31
Granted: 2002-09-10
Abstract: A device for controll-ing beams of particles, X-rays  and gamma  rays in-chiding a plurality of chan-nels with total external ref-lection inner surfaces, input butt-ends facing a radiation source and output butt-ends aimed at a radiation receiv-er is taught. Channel-farm-ing elements are in the form of surfaces, tubes, and struc-tures with multiple channels one are rigidly positioned one relative to mother with a spacing between suports such that the sagging of the channel-foaming  elements does  not interfere with beam propagation The de-vice can be used to capture radiation from sources which produce parallel or divergent radiation. The resulting beam or beams can be of a variety of shapes or angular orientations including quasi-parallel, convergent, and split beams.  Energy filtering is accomplished by selective absor-tion of radiation by the channel-forming elements and by selective reflection, by geometrics which cause some energies to be dis-criminated against because of the angle of total external reflection associated with that energy. Also provided are embodiments which use these devices for improved medical imaging, medical therapy, X-ray lithography, and analytic instruments.
Patent CA-2097383-C (CA)
Title: Bisdithiophosphoric acid derivatives as lubricant additives
Inventor: ZINKE HORST
IPC: C10N40/20
Filed: 1993-05-31
Granted: 2005-11-15
Abstract: There are disclosed compounds of formula I (see formula I) wherein R1 and R2 are each independently of the other C3-C18alkyl, C5-C12cycloalkyl, C5-C6cycloalkylmethyl, C9-C10bicycloalkylmethyl, C9-C10tricycloalkylmethyl, phenyl, C7-C24alkylphenyl or, taken together, are  (see formula II) R3 is C2-C18alkylene which is interrupted by -O-, -S-, or -NR4-, or is a group of formula (see formula III)       or     (see formula IV) R4 is hydrogen, C1-C18alkyl, phenyl-C1-C4alkyl, phenyl or C1-C6alkyl-substituted phenyl, R5 is hydrogen or methyl. These compounds are particularly suitable for use as additives for lubricant compositions, hydraulic fluids and machining fluids.
Patent CA-2104470-C (CA)
Title: Classifying or sorting
Inventor: SMITH MARTIN PHILLIP
IPC: G01N21/87
Filed: 1992-02-20
Granted: 2003-04-01
Abstract: In order to sort ore from associated mineral material, a method of classifying an object is provided, the method comprising feeding the object along a feed path, irradiating the object with infra-red radiation of a first wavelength, the radiation of the first wavelength being focussed onto an irradiation zone intersecting the feed path, the irradiation zone having a length in the vertical plane substantially greater than its width in the vertical plane. The intensity of radiation emitted by the object at at least one second wavelength different from the first wavelength is examined, the second wavelength being characteristic of a first class of object (in this case, the ore to be sorted from the mineral), whereby the classification of the object may be derived.
Patent CA-2104837-C (CA)
Inventor: MANGANARO JAMES LAWRENCE
IPC: C01B15/013
Filed: 1993-08-25
Granted: 1996-10-08
Abstract: A process is provided for removing iron from hydrogen peroxide by contacting the hydrogen peroxide with a-zirconium phosphate for up to 5 minutes at less than 35°C.
Patent CA-2112603-C (CA)
Title: Assay method for detecting the presence of bacteria
Inventor: BENJAMIN THOMAS L
IPC: C12Q1/68
Filed: 1993-12-30
Granted: 1998-10-27
Abstract: An assay method is provided to easily and quickly detect the presence of organisms capable of being cultured, such as bacteria, characterized by antibody capture of the organism of interest by use of specialized magnetic beads, incubation of the captured cells to form colonies; removal of material from the colonies with a colony lift membrane; and detection of the colony material on the membrane sheet by use of labeled antibodies, PCR or nucleic acid probes.
Patent CA-2116439-C (CA)
Title: Methode de separation de matieres oleophiles et hydrophobes a partir d'eaux de lavage
Inventor: MESTETSKY PAT A
IPC: C09K23/16
Filed: 1992-08-31
Granted: 2001-01-16
Abstract: Procédé permettant de séparer les matières oléophiles-hydrophobes présentes dans de l'eau de lavage. Dans ce procédé on mélange à l'eau de lavage de manière séparée ou combinée, environ 30 à 2100 p.p.m d'un agent tensioactif de formule (I), dans laquelle n est compris entre 6 et 20; et environ 1 à 200 p.p.m d'un enzyme sélectionné dans le groupe constitué de protéases, d'amylases, de lipases, de cellulases, de pectinases et de mélanges de ces dernières. On laisse ensuite reposer le mélange eau de lavage/tensioactif et/ou enzyme pendant une durée suffisante pour que les matières oléophiles-hydrophobes se séparent.
Patent CA-2124195-C (CA)
Inventor: CHEN ERNEST C
IPC: G01S7/292
Filed: 1993-09-23
Granted: 1996-07-16
Abstract: A method of tracking an object in the Doppler dimension that provides for improved imaging.  The method tracks the cen-troid of the object's Doppler and smooths out noisy estimates of its phase history.  The tracking and smoothing combine to im-prove tracking performance and image quality.  Doppler signals are generated by a coarse Doppler tracker that removes transla-tional motion of the object.  Pulse pair processing produces an estimate of the Doppler centroid of the object.  For each pair of adjacent pulses, pulse pair processing is applied to individual range bins, and the outputs are combined to estimate the Doppler centroid of the object at that particular time.  A low pass filter is used after pulse pair processing to smooth out phase increments. Phase increment smoothing then filters the output signals from the filter with a smooth curve, such as a second-degree polynom-ial.  Phase recursion then produces a phase history.  The recursive phase history is differenced with updated, appropriately delayed phases.  The difference phases are compensated from the radar return from the coarse Doppler tracker.  Fast Fourier transform processing then produces a Fourier transformed image.  The output from the filter is also processed to update the phase and the phase updated signals are fed back to the coarse Doppler tracker.  The phase updating integrates the output of the filter to update the phase history of the object based on phase increments derived from the filter.  The phase update is also delayed in order to match these phases in timing with those from the phase recursion step.
Patent CA-2128136-C (CA)
Title: Electrosurgical stapling device
Inventor: YATES DAVID C
IPC: A61B18/14
Filed: 1994-07-15
Granted: 1999-10-26
Abstract: An surgical stapling instrument is provided which uses a thermogenic energy preferably bipolar radiofrequency energy for cauterization and/or welding tissue. The instrument compresses tissue between one pole of a bipolar energy sources contained on a first interfacing surface and a second pole of a bipolar energy source contained on a second interfacing surface. Staples and thermogenic energy are applied to the compressed tissue. In a preferred embodiment a cutting means for cutting tissue is incorporated into the instrument.
Patent CA-2132290-C (CA)
Inventor: SAVAGE WILLIAM A
IPC: A62C27/00
Filed: 1994-09-16
Granted: 1999-01-26
Abstract: The present invention comprises a vehicle body assembly, 10, comprised of a series of welded together aluminum, stainless base or galvanealed steel panels 12, in interfacing engagement with companion thermo-plastic or thermo-set plastic covering panels, 12, adapted to be pre-colored and resistant to heat, moisture and the environment. The base and covering panel are interposed in facing engagement through the use of a flange, 13, and formed channel, 14, and further secured together through the use of silicon, 19, within the channel and various portions of vehicle trim, 16, of metallic, chrome or rubber material. The use of the covering panel produces a method for assembling the vehicles requiring the base panels to be precisely configured and fitted without painting or previously required disassembly. The pre-colored covering panels are merely inserted into the companion base panel thereby forming a vehicle body of a specific configuration easy to assemble and repair.
Patent CA-2132548-C (CA)
Inventor: DISCHER HEINZ-PETER
IPC: C22B7/02
Filed: 1993-03-26
Granted: 2000-12-19
Abstract: Les poussières d'usines métallurgiques sont introduites dans une première atmosphère protectrice, chauffée de préférence jusqu'à 1000 ou 1100 °C, où elles séjournent pendant que les granulés de poussière sont agités en continu jusqu'à ce que notamment les composés de chlore, d'alcali et de plomb contenus dans les poussières se volatilisent presque entièrement. L'expérience a montré que cette opération dure une heure. Un courant de gaz de lavage est introduit dans l'atmosphère protectrice afin d'entraîner les vapeurs de plomb, chlore et alcali dégagées dans le four tubulaire rotatif jusqu'à un dispositif de condensation et de filtrage. On ajoute ensuite aux poussières d'usines métallurgiques un agent réducteur, notamment du charbon, et on les introduit dans une deuxième atmosphère protectrice, chauffée notamment jusqu'à 1150 ou 1350 °C, où elles sont agitées en continu. L'oxyde de zinc contenu dans les poussières est ainsi réduit. Les poussières séjournent dans le four jusqu'à ce que le zinc contenu dans les poussières se volatilise presque entièrement dans l'atmosphère protectrice contenant de l'oxygène, sous forme de vapeurs de zinc métallique, et que le zinc métallique se convertisse en oxyde de zinc. L'expérience a montré que cette opération dure jusqu'à deux heures. Un courant de gaz de lavage est ensuite à nouveau introduit dans l'atmosphère protectrice, entraîne l'oxyde de zinc hors du four, puis est refroidi et filtré avec l'oxyde de zinc.
Patent CA-2134273-C (CA)
Title: Spoolable coiled tubing completion system
Inventor: MOORE BRIAN KEITH
IPC: E21B34/10
Filed: 1994-10-25
Granted: 1999-05-25
Abstract: A coiled tubing completion system is provided with a plurality of completion apparatus, all of which is designed flush with the diameter of the coiled tubing outside diameter for avoiding upsets and are flexible, spoolable on a coiled tubing reel and having through bores large enough to pass wireline tools for performing other operations. The spoolable coiled tubing system may use standard coiled tubing well control equipment and can be used in live wells. The flush, flexible, spoolable and through bore completion equipment may include a tubing retrievable safety valve, an annular control valve, concentric gas lift valves, a zone packer, a landing nipple, a sliding sleeve, and may include at the end a non-flexible but flush and open bore production packer and pump out plug. The completion system may be retrieved through a retrieval system.
Patent CA-2137616-C (CA)
Title: Method and apparatus for controlling access to digital signals
Inventor: HAMILTON JEFFREY S
IPC: H04N7/167
Filed: 1994-12-08
Granted: 2003-04-01
Abstract: A method and apparatus are provided for controlling access to digital signals sent via a first communication path and retransmitted over a second communication path. The digital signals, having been encrypted by a first encryption scheme and sent over the first communication path, are received and decrypted. The decrypted signals are then retransmitted over the second communication path using a second encryption scheme that differs from the first encryption scheme.
Patent CA-2138897-C (CA)
Inventor: NAKASHIMA AKIO
IPC: C09D11/00
Filed: 1994-12-22
Granted: 1998-04-21
Abstract: A thermochromic color-memory compositions exhibiting high color contrast between high color density in a colored state and sufficiently low color density in a decolored state with high freedom of selection of the reaction medium, and highly useful as a thermochromic material.  The thermochromic color-memory composition comprises a homogeneous solubilized mixture of essential three components of (a) an electron-donating color-developing organic compound, (b) an electron-accepting compound, and (c) a reaction medium for controlling a color reaction of the component (a) with the component (b); the component (c) being selected from aliphatic ketones of 10 to 22 total carbons and aryl alkyl ketones of 12 to 24 total carbons; and the composition changing the color thereof with a large hysteresis width (AH) of from 8°C to 80°C.
Patent CA-2141473-C (CA)
Inventor: KUSTERMANN MARTIN
IPC: B05C1/08
Filed: 1995-01-31
Granted: 2006-10-31
Abstract: A method for at least one-sided coating of a material web with an application medium is performed by a two-element applicator device having at least one applicator roll and a counter element defining a gap through which the material web is conveyed. The method includes the steps of premetering the application medium onto the applicator roll and transferring the application medium onto the material web in the gap. Premetering of the application medium to the applicator device is performed by at least one free jet.
Patent CA-2143145-C (CA)
Title: Determining dynamic properties of programs
Inventor: DEVANBU PREMKUMAR THOMAS
IPC: G06F11/36
Filed: 1995-02-22
Granted: 1999-12-28
Abstract: Techniques for obtaining information about dynamic properties of a program.  The techniques involve programming a programmable execution environment such as a debugger so that when the program is executed in the execution environment, side effects of the execution provide the information about the dynamic properties.  The program for the execution environment is produced by a source code analyzer which statically analyzes the source code. The source code analyzer is in turn produced by a code analyzer generator. Output from the execution environment may be provided to a graphical display system. In one use of the techniques, the code analyzer generator not only generates a source code analyzer for producing the program for the execution environment, but also a source code analyzer for producing a program which when executed by a graphical browser makes a flow graph for the program.  In this case, the graphical browser responds to the output from the execution environment by altering the appearance of the flow graph.
Patent CA-2146747-C (CA)
Title: Liver reserve cells
Inventor: NAUGHTON BRIAN A
IPC: A61K35/12
Filed: 1993-10-08
Granted: 2006-12-19
Abstract: The present invention relates to liver reserve or stem cells. In particular, it relates to the isolation, characterization, cultur-ing, and uses of liver reserve cells. Liver reserve cells isolated by density gradient centrifugation can be distinguished from other liver parenchymal cells by their morphology, staining characteristics, high proliferative activity and ability to differentiate in vitro. In long-term cultures described herein, these cells expand in numbers and differentiate into morphologically mature liver parenchymal cells, capable of mediating liver-specific functions. Therefore, isolated liver reserve cells may have a wide range of applications, including, but not limited to, their uses as vehicles of exogenous genes in gene therapy, and/or to replace and reconstitute a destroyed, infected, or genetically deficient mammalian liver by transplantation.
Patent CA-2153144-C (CA)
Inventor: GRUPPING ARNOLD WILLEM JOSEPHU
IPC: E21B43/12
Filed: 1994-01-03
Granted: 1999-08-17
Abstract: A roller vane motor for downhole drilling comprises a housing (1) and a rotor (3). The housing contains outlet ports (7) and wing deflector cams (2) that divide the space between housing and rotor into chambers (6a, b). The rotor is equipped with cylindrical rollers (5) in recesses (4), which rollers can move between an extended and a retracted position. Part of the drilling mud that flows through a central conduit (10) in the rotor, passes through inlet ports (9) and the recesses into chamber-parts (6a) and pushes rollers (51) into their extended position and in a clockwise direction, making the rotor turn, whilst drilling mud of lower pressure is pushed from the corresponding chamber-parts (6b) through the outlet ports (7) into the annulus (8) between the motor and the borehole wall. When the rollers (51) reach the wing deflector cams (2) they are forced into the retracted position, their tasks being taken over by rollers (5).
Patent CA-2154620-C (CA)
Title: Method of detecting surface contamination by an analyte
Inventor: KLEIN CHRISTIAN
IPC: G01N33/558
Filed: 1995-07-25
Granted: 2003-02-11
Abstract: Subject matter of the invention is a method for detecting surface contamination by an analyte by wiping the analyte off the surface with the aid of a wiping surface, eluting the analyte from the wiping surface with an eluant, and detecting the analyte in the eluate in an immunological detection reaction, characterized  in that: a) the surface to be tested for the analyte is wiped with a wiping surface, b) the wiping surface is brought into contact with the planar surface of a capillary active, chromatographic test strip which has an eluant application zone at its one end and a target zone at its other end whereby contact is made in an area between these two zones, c) eluting liquid is applied onto the zone provided for this purpose, said liquid moving toward the target zone passes the contact site with the wiping surface as a consequence of capillary forces, whereby analyte is taken up by the eluant, and d) in the target zone, the analyte is measured in an immunological binding reaction. The method is particularly suitable for the detection of drugs on surfaces.
Patent CA-2157649-C (CA)
Title: Fifth wheel with gooseneck
Inventor: PUTNAM REX D
IPC: B62D53/08
Filed: 1995-09-06
Granted: 1998-10-20
Abstract: A fifth wheel hitch assembly  (10) which is mounted  on  the  hitch  ball  (32)  of  a  gooseneck subassembly  (12),  is described.   The subassembly is mounted in the bed (14A) of a pickup truck (14) such that the subassembly is parallel to the rear axle (16) of the truck and the hitch ball is directly centered over or slightly fore or aft of the axle differential housing (58). A pair of flexible half-shell bearings (39) are positioned on the hitch ball to form a complete bearing (38) completely surrounding the top portion (33) of the hitch ball.  A fifth wheel hitch assembly with a permanently mounted adaptor (42)  is mounted with the adaptor extending over the complete bearing when the complete bearing is positioned on the hitch ball.   A pair of securing rods (52) extend through the adaptor and the complete bearing below the ball (33A) of the top portion of the hitch ball and securing the adaptor on the complete bearing and the hitch ball.   The fifth wheel head (46) of the fifth wheel hitch assembly is mounted onto the open top of the adaptor.