baber/WOPTO huggingface dataset:
Patent CA-2008096-A1 (CA)
Title: Nucleic acid amplification using single primer
Inventor: ROSE SAMUEL
IPC: C12Q1/68
Filed: 1990-01-18
Abstract: ABSTRACT OF THE DISCLOSURE    A method is disclosed for determining the presence of a polynucleotide analyte in a sample suspected of containing the analyte.  The method comprises (a) forming as a result of the presence of an analyte a single stranded polynucleotide comprising a target polynucleotide binding sequence flanked by first and second polynucleotide sequences that differ from the sequence of the analyte or a sequence complementary to the analyte sequence, (b) forming multiple copies of the single stranded polynucleotide, and (c) detecting the single stranded polynucleotide.  Also disclosed is a method of producing at least one copy of a single stranded polynucleotide.  The method comprises (a) forming in the presence of nucleoside triphosphates and template dependent polynucleotide polymerase an extension of a polynucleotide primer at least the 3'-end of which has at least a 10 base sequence hybridizable with a second sequence flanking the 3'-end of the single stranded polynucleotide, the second sequence being partially or fully complementary with at least a 10 base first sequence flanking the 5' end of the single stranded polynucleotide, (b) dissociating the extended polynucleotide primer and the single stranded polynucleotide, (c) repeating step a and (d) dissociating the extended polynucleotide primer and the copy of the single stranded polynucleotide.
Patent CA-2009306-A1 (CA)
Title: Expression systems for amidating enzyme
Inventor: BETELSEN ARTHUR H
IPC: C12N11/00
Filed: 1990-02-05
Abstract: Alpha-amidating enzyme is produced by recombinant DNA techniques recoverable in high yields and at high purity. Both eukaryotic and prokaryotic expression vectors are provided having a transcriptional promoter followed downstream by a DNA sequence which encodes amidating enzyme. The vector selected is one capable of directing the expression of polypeptides in the host selected, and preferred hosts are transected with the described vectors.
Patent CA-2010376-A1 (CA)
Title: Method and apparatus for a calibration electronic timing circuit
Inventor: GOFFIN GLEN P II
IPC: F42D1/055
Filed: 1990-02-19
Abstract: METHOD AND APPARATUS FOR THE CALIBRATION OF         ELECTRONIC TIMING CIRCUIT                       ABSTRACT    A timing circuit includes a variable frequency oscillator which has a control signal that determines the output frequency of the oscillator.  The control signal is stored in the circuit.  A reference signal is further stored in the circuit.  A precision calibration pulse is applied to the timing circuit which counts the output cycles of the variable frequency oscillator during the period of the pulse.  This count is stored and compared to the reference count to produce an error count.  This error count is combined with the previously stored control signal to produce a new control signal that drives the output of the oscillator to a new frequency which is closer to a predetermined timing relation with the time reference which produced the calibration pulse.  Additional calibration pulses are sequentially applied to the timing circuit to cause the frequency of the oscillator to converge toward a predetermined relation with the time reference.  The timing circuit can be utilized as a part of a delay circuit in an electronic blasting system wherein a control unit transmits the calibration pulse concurrently to each of the delay circuits to cause each circuit to calibrate its local oscillator in accordance with the calibration pulse.  One or more of such pulses can be transmitted to cause all of the delay circuit oscillators to be brought to within a required degree of synchronization of rates.  The control unit transmits a delay count to each of the delay ignition circuits.  A fire command is transmitted from the control unit to each of the delay ignition circuits to cause the outputs of the calibrated local oscillators to be compared to the previously received delay count until a predetermined relation is reached.  When this relation is reached, each delay ignition circuit generates a fire signal which ignites a corresponding explosive element.
Patent CA-2011599-A1 (CA)
Title: Biconstituent polypropylene/polyethylene bonded fibers
Inventor: JEZIC ZDRAVKO
IPC: D04H1/42
Filed: 1990-03-06
Abstract: ABSTRACT         Heat-bonded articles are prepared by employing as the heat-bondable material, biconstituent PP/PE fibers which comprise polypropylene as one phase and polyethylene as another phase.  The biconstituent fibers provide improved tenacity and hand when compared to polypropylene alone.  The biconstituent fibers of PP/PE having co-continuous zones exhibit a stronger heat-bond than PP alone and exhibit it over a much broader heat-bonding temperature range than PP alone. Favorable shrinkage characteristics are obtained.     37,735-F
Patent CA-2011695-A1 (CA)
Title: Cephem compound and a process for preparation thereof
Inventor: SAKANE KAZUO
IPC: A61K31/546
Filed: 1990-03-07
Abstract: ABSTRACT        Cephem compounds of the formula:                wherein R1 is amino or a protected amino, R2 is ethyl, propyl or lower alkenyl, R3 is COO ? , carboxy or a protected carboxy, R4 is hydroxy(lower)alkyl or protected hydroxy(lower)alkyl, R5 is amino or a protected amino, X ? is an anion, and n  is 0 or 1, or, R1, R3, R5, X ? and n are each as defined above, R2 is lower alkyl, and R4 is 3-hydroxypropyl, with proviso that (i)  when R3 is COO ? , then n is 0, and (ii) when R3 is carboxy or a protected carboxy, then n is 1, or  pharmaceutically acceptable salts thereof.  The preparation of these compounds, pharmaceutical compositions containing then and a method of treating infectious diseases in humans and animals infected by pathogenic microorganisms are also disclosed.
Patent CA-2013709-A1 (CA)
Inventor: DISANTO FRANK J
IPC: G02F1/167
Filed: 1990-04-03
Abstract: An electrophoretic display includes a plurality of intersecting grid and cathode lines which are spaced one from the other by means of an insulating material.  The grid and cathode lines are associated with an anode electrode which constitutes a planar glass plate having deposited thereon a thin layer of ITO or a similar metal.  Interposed between the cathode and grid structure and the anode plate is a mesh electrode which is relatively of the same size as the anode plate.   Control voltages are applied to the mesh structure and  the anode  electrode  to  further  control  particle propagation.    The  conventional  anode  structure  may  be entirely replaced with the mesh-like structure to provide an electrophoretic display which can be optimumly illuminated by back lighting.
Patent CA-2015602-A1 (CA)
Title: Communication protocol for statistical data multiplexers arranged in a wide area network
Inventor: SIN KWAI S
IPC: H04L12/28
Filed: 1990-04-27
Abstract: ABSTRACT:      A wide area network (10) formed by interconnecting network stations (12b) using a plurality of data links (15), in a daisy chain, with each network station serving a number of terminal ports (18b).  The network stations communicate by exchanging circuit-specific messages (62), with each circuit specific message having one or more slot- specific message (70) associated with one of ports (18b) served by a given destination station.           Fig. 4.
Patent CA-2016223-A1 (CA)
Title: Process for continuous liquid phase reaction of 1,1,1-trichloroethane to provide 1,1-dichloro-1- fluoroethane and 1-chloro-1,1-difluoroethane mixtures
Inventor: WISMER JOHN A
IPC: C07C17/10
Filed: 1990-05-07
Abstract: PROCESS FOR CONTINUOUS LIQUID PHASE REACTION OF HYDROGEN FLUORIDE AND 1,1,1-TRICHLOROETHANE TO PROVIDE 1,1-DICHLORO-1-FLUOROETHANE AND 1-CHLORO-1,1-DIFLUOROETHANE MIXTURES            Abstract of the Disclosure A continuous non-catalytic process for the manufac-ture of  1,1-dichloro-1-fluoroethane/1-chloro-1,1-difluoro-ethane mixtures from 1,1-dichloro-1-fluoroethane is pro-vided.   Hydrogen  fluoride and  1,1,1-trichloroethane  are continuously feed a molar ratio of from about 3.0 to about 5.2  to  form  a  liquid  phase  hydrofluorination  reaction mixture.    Vapor phase  reaction product  is continuously withdrawn from the reaction zone, and hydrogen fluoride is continuously  selectively  refluxed  back  to  the  reaction mixture.    1,1,1-Trichloroethane  utilization  approaches 100%,  with  selectiYity  for  1,1-dichloro-1-fluoroethane between 15% and 85%, based upon ths amount of 1,1-dichloro-1-fluoroethane and 1-chloro-1,1-difluoroethane contained in the gaseous reaction product.
Patent CA-2016807-A1 (CA)
Title: Method for manufacturing superconducting article
Inventor: SHINBO YUKIO
IPC: H01L39/24
Filed: 1990-05-15
Abstract: METHOD FOR MANUFACTURING SUPERCONDUCTING ARTICLE            ABSTRACT OF THE DISCLOSURE        A method for manufacturing a superconducting article, comprising the steps of: forming a first layer comprising a mixture of LnBa2Cu3Ox and Ln2BaCuOx on the surface of a substrate, said Ln being an optional rare earth element; then locally and sequentially heating and melting the first layer to locally and sequentially form a molten pool of the mixture of the first layer, and causing the molten pool of the first layer to locally and sequentially solidify, thereby arranging the a-b plane of the crystal of the mixture of the first layer in parallel with the surface of the substrate; then forming a second layer comprising a mixture of at least CuO and BaCuO2 on the surface of the first layer; and then melting the mixture of the second layer to cause the resultant melt of the mixture of the second layer to diffusion-react with Ln2BaCuOx in the first layer so as to convert the first and second layers into a film of a superconducting substance comprising LnBa2Cu3Ox, in which the a-b plane of the crystal thereof is arranged in parallel with the surface of the substrate; thereby manufacturing a superconducting article comprising the substrate and the film of the superconducting substance formed on the surface of the substrate.
Patent CA-2017102-A1 (CA)
Title: Output buffer for reducing switching induced noise
Inventor: DAVIS JEFFREY B
IPC: H03K19/0175
Filed: 1990-05-18
Abstract: Attorney Docket No. NS013470 OUTPUT BUFFER FOR REDUCING SWITCHING INDUCED NOISE            Abstract An output buffer for reducing switching induced noise in high speed integrated circuit devices incorporates a relatively small current carrying capacity secondary pulldown transistor element with the current path first and second terminal leads coupled in parallel with the current path first and second terminal leads of the primary pulldown transistor element.  A separate pulldown delay resistance element of selected value is coupled in series between the control terminal leads of the secondary and primary pulldown transistor elements.  The secondary pulldown transistor element control terminal lead is coupled in the output buffer to receive a signal propagating through the output buffer before the primary pulldown transistor element control terminal lead.  A relatively small discharge current is therefore initiated from the output before turn on of the relatively large discharge current of the primary pulldown transistor element.  The separate pulldown delay resistance element delays turn on of the primary pulldown transistor element a specified time delay after turn on of the secondary pulldown transistor element during transition from high to low potential at the output.  As result ground bounce is divided into two spikes and the ground rise in potential is constrained to approximately one half that of conventional ground bounce levels.  A secondary pullup transistor element with associated noise reduction components can similarly be used on the supply side to reduce Vcc droop.
Patent CA-2017622-A1 (CA)
Title: Ceramic welding process and powder mixture for use in same
Inventor: MOTTET LEON P
IPC: C04B35/66
Filed: 1990-05-28
Abstract: In ceramic welding processes, oxidising gas and a mixture of refractory and fuel powders are projected against a surface and the fuel is burnt to generate sufficient heat that the refractory powder becomes at least partially melted or softened and a cohesive refractory mass is progressively built up against that surface. In order to reduce any tendency for the weld mass to include a low-grade refractory phase and thus promote the refractoriness of that weld mass, the fuel powder is present in a proportion of not more than 15% by weight of the total mixture and comprises at least two metals selected from aluminium, magnesium, chromium and zirconium, in that at least the major part by weight of the refractory powder consists of one or more of magnesia, alumina and chromic oxide, and in that the molar proportions of silica and calcium oxide present in the refractory powder (if any) satisfy the following expression: [SiO2] % ~ 0.2 + [CaO] %.      The elements of the fuel may be present in the form of an alloy.
Patent CA-2017658-A1 (CA)
Title: Multizone catalytic reforming process with a plurality of catalysts
Inventor: MOSER MARK D
IPC: C10G59/02
Filed: 1990-05-28
Abstract: A hydrocarbon feedstock is catalytically reformed in a process which comprises contacting the feedstock and hydrogen at catalytic reforming conditions in an initial catalyst zone with a catalyst comprising platinum, germanium and halogen on a solid catalyst support. The product stream and hydrogen from the first catalyst zone is thereafter contacted at catalytic reforming conditions in a terminal catalyst zone with catalyst A or B where catalyst A is essentially free of germanium and comprising platinum, germanium, halogen and a metal promoter on a solid catalyst support and where catalyst B comprises platinum, germanium, halogen and a metal promoter on a solid catalyst support.
Patent CA-2017675-A1 (CA)
Inventor: KAUFMAN DAVID P
IPC: B65D43/24
Filed: 1990-05-28
Abstract: A wet wipe container contains first and second protruding surfaces within the lid and base, respectively, which contact each other to maintain the lid in a partially open position until the user applies a sufficient downward force to close the lid. Maintaining the lid in a partially open position is particularly advantageous for users of baby wipes, who frequently have to reach into the container for a second wipe using only one hand.
Patent CA-2018393-A1 (CA)
Inventor: AFEYAN NOUBAR B
IPC: B01J20/282
Filed: 1990-06-06
Abstract: Disclosed are chromatography methods and matrix geometries which pernmit high resolution, high productivity separation of mixtures of solutes, particularly biological materials. The method involves passing fluids through specially designed chromatography matrices at high flow rates. The matrices define first and second interconnected sets of pores and a high surface area for solute interaction in fluid communication with the members of the second set of pores (14). The first and second sets of pores are embodied, for example, as the interstices among particles and throughpores (14) within the particles. The pores are dimensioned such that, at achievable high fluid flow rates, convective flow occurs in both pore sets, and the convective flow rate exceeds the rate of solute diffusion in the second pore set. This approach couples convective and diffusive mass transport to and from the active surface and permits increases in fluid velocity without the normally expected bandspreading. <IMAGE>
Patent CA-2020616-A1 (CA)
Title: Fiber-reinforced poly(biphenylene sulfide) composites and methods
Inventor: YU MICHAEL C
IPC: C08G75/06
Filed: 1990-07-06
Abstract: Abstract of the Disclosure Composites comprised of reinforcing fibers in a continu-ous matrix of poly(biphenylene sulfide) resin and methods of producing such composites are provided.  The poly(biphenyl-ene sulfide) resin is produced by reacting 4,4'-difluoro-biphenyl with an alkali metal sulfide in a polar organic compound whereby the resin has a high melting point and a high melt viscosity,  and the composites  formed therefrom have excellent mechanical properties and retention of mecha-nical properties at high temperatures.
Patent CA-2023069-A1 (CA)
Title: Apparatus for filling bottles and the like
Inventor: METTE MANFRED
IPC: B67C3/26
Filed: 1990-08-10
Abstract: ABSTRACT           The filling valve in a counterpressure filling apparatus for admission of liquids into bottles or other types of containers having open upper ends is provided with a sleeve which can descend toward an empty container below the valve and carries a deformable internal annular sealing element which is movable into sealing engagement with the external surface of the open end to center the container.  The sealing element is thereupon acted upon by a gaseous fluid to bear against the external surface and to establish a reliable seal during subsequent or simultaneous admission of a pressurized gaseous fluid which precedes the admission of a metered quantity of liquid whereby the liquid expels the gaseous fluid along the same path which serves for admission of pressurized gaseous fluid into the container.
Patent CA-2023728-A1 (CA)
Title: Wind or wind-photovoltaic power operated oxygenizing device for oxygenizing water
Inventor: GAZZOLA GIOVANNI A
IPC: C02F7/00
Filed: 1990-08-21
Abstract: WIND OR WIND-PHOTOVOLTAIC POWER OPERATED OXYGENIZING             DEVICE FOR OXYGENIZING WATER   ABSTRACT The present invention relates to a wind and/or wind-photovoltaic power operated oxygenizing device for oxygenizing: water, which device  comprises  a floating structure (2) upon which at least one aerogenerator (5; 15) is supported; possibly, photovoltaic cells (18); a device (6, 21) for pumping air drawn from the atmosphere towards the sea bottom, operated by the wind-photovol-taic power; and means (11) for anchoring the oxygenizing device to the sea-bottom.
Patent CA-2023980-A1 (CA)
Title: Method and apparatus for monitoring a transport refrigeration system and its conditioned load
Inventor: HANSON JAY L
IPC: F25B49/00
Filed: 1990-08-24
Abstract: 55,503 ABSTRACT OF THE DISCLOSURE         A monitor  for a transport refrigeration unit in which the temperature of  the air  discharged by  the unit into a  load space is compared with the temperature of air returning to the unit, to provide  a signal  DI responsive to the  algebraic difference.  Signal DI, which represents the actual conditioning mode, is compared with a commanded conditioning   mode   signal   provided  by  a thermostat associated  with  the  transport  refrigeration  unit, and also  with   predetermined  reference  values,  to  detect incorrect operating modes, as well as  significant loss of refrigerant  capacity.    Timers  initiate resettable time delays in response to such detections, after which warning and  shut-down  signals  are  respectively  provided  when certain time delays are allowed to expire.   Logic signals provided  by  the  monitor  are logically related when the monitor  shuts  the system  down  to  drive  a diagnostic display which indicates the cause of shut down.
Patent CA-2024002-A1 (CA)
Title: Method and apparatus for opening a mollusk
Inventor: KICZEK EDWARD F
IPC: A23L17/50
Filed: 1990-08-24
Abstract: ABSTRACT   Method and apparatus for opening a mollusk (e.g., oyster) by rapidly cooling said mollusk to a surface temperature of about -100°F followed by mechanically agitating said mollusk whereby the mollusk shell opens and at least one eye of the mollusk meat is detached from the shell.  Subsequent to cooling and prior to agitating, the mollusk can be rapidly immersed in a water bath to raise the surface temperature of the mollusk to no more than about -50°F.  Individually quick frozen mollusk meat can be prepared rapidly either as an individual portion of meat or on the half shell.
Patent CA-2025963-A1 (CA)
Inventor: SMITH HYLTON H
IPC: C08J5/18
Filed: 1990-09-21
Abstract: H?LS AKTIENGESELLSCHAFT   - PATENTABTEILUNG -A b s t r a c t Radiation-cured film webs are proposed which are prepared from copolyesters having hydroxyl terminal groups,  not more  than 90% of the said hydroxyl groups having been replaced by acrylate  groups or methacrylate groups. The copolyesters must comprise at least  two different dicar-boxylic acids, must have a copolymer chain which has been branched owing  to the presence of polyester components having a  functionality greater than two, and  must have a glass transition temperature of -30 to +30°C and an average molecular weight  of  between 1,000 and 10,000. The film webs are particularly   suitable as a backing carrier  coated on one  or  both sides  with pressure sensitive adhesives  in the preparation of lables or as the backing carrier of adhesive tapes.     4424ab
Patent CA-2026177-A1 (CA)
Title: 3-isoxazolone derivatives, their preparation and their therapeutic uses
Inventor: NAGANO MITSUO
IPC: C07D261/20
Filed: 1990-09-25
Abstract: ABSTRACT OF THE DISCLOSURE   Compounds of formula (I):                                           (I) [in which R1 is hydrogen, halogen, alkyl, alkenyl, alkynyl, optionally substituted benzyl or optionally substituted phenyl; R2 is hydrogen, alkyl, optionally substituted phenyl, or a heterocycle having from 5 to 7 ring atoms; or R1 and R2, together with the carbons to which they are attached, form an optionally substituted; hydrocarbon ring fused to the isoxazole ring; -NR3R4 represents an alicyclic amino group; and A is optionally substituted phenyl, optionally substituted benzyl, alkyl, alkoxy, optionally substituted benzyloxy, or optionally substituted phenoxy; and acid addition salts thereof] have valuable activity for the treatment of cerebrovascular disorders and for use as centrally acting muscle relaxants.
Patent CA-2026420-A1 (CA)
Title: Plumbing Sleeve
Inventor: POLLARD DONALD
IPC: E03C1/12
Filed: 1990-09-27
Abstract: A  pipe  coupling  is  described  suitable  for  joining  together drainage,  or  other,  plastic  piping  through  a  poured  concrete  layer, typically a floor.   The coupling permits precise location of  fittings, such as a toilet flange, after the concrete has been poured and set.
Patent CA-2028078-A1 (CA)
Inventor: DAFTARY FEREIDOUN
IPC: A61C8/00
Filed: 1990-10-19
Abstract: A system and method is provided for implanting tooth analogues in the jawbone resulting in aesthetically and functionally desirable gingival tissue contours after restoration. The system permits modification and adaptation of the tooth analogue to meet intraoral demands in a manner similar to that used in the preparation and restoration of natural teeth. The system comprises a standard fixture (12) and cover screw passed through opened gingival tissue and implanted in the jawbone. After the ossointegration of the fixture, the gingiva is reopened, the cover screw removed and a healing cap (30) having a predetermined contour, is attached to the fixture. The reopened gingiva re-heals in a shape determined by the contour of the healing cap. The healing cap is then removed and replaced by an abutment (4,6,9) having an emergence profile matching that of the healing cap. An immediate snug fit between the gingival tissues and the abutment is thereby provided at the time of connection of the abutment to the fixture. A crown (2) is removably attached to the abutment by a screw (90) extending through the side of the crown into the abutment. An improved version of the healing cap is a healing cap created in two portions (138,140) so that one portion (138) around which gingiva tissue regrows remains in the patient and only a second upper portion is removed (140), and an improved abutment (204) which is engagable with the portion of the healing cap left in the patient is used for the abutment about which the crown is removably attached.