baber/WOPTO huggingface dataset:
Patent NO-155896-C (NO)
Inventor: BALZER DIETER
IPC: E21B43/22
Filed: 1981-09-07
Abstract: A process for recovering extensively emulsion-free oil from a subterranean deposit of medium or high salinity comprises forcing into an injection well a 1-20% strength solution or dispersion in formation water of a carboxymethylated ethoxylate tenside of the formula: R-(OCH2CH2)n-OCH2-COOM wherein R is a linear or branched aliphatic residue of 4-20 carbon atoms or a mono- or dialkylaromatic residue of 1-14 carbon atoms in the alkyl group, n is 3-30, and M is an alkali or alkaline earth metal ion or ammonium, and wherein the degree of carboxymethylation is incomplete, wherein the tenside is selected so that the phase inversion temperature of the system: crude oil/formation water/tenside/optional additives, lies 0 DEG -10 DEG C. above the deposit temperature.
Patent NO-158399-C (NO)
Inventor: HAERLE HANS-GEORG
IPC: H03K17/62
Filed: 1982-06-25
Abstract: 1. A controlled switch for high-frequency signals having no d.c. component comprising in T-formation a series arrangement of a resistor (R2) and a diode (D1) in the first series arm connected to a signal input, a first transistor (T1) in the shunt arm, and a second transistor in the second series arm, where a control voltage can be connected to the base of the first transistor (T1) and the collector of the first transistor (T1) is connected to the diode (D1) and the base of the second transistor (T2), characterised in that the signal input (E) is connected via a first coupling capacitor (C1) to a first and second resistor (R1, R2), that the other terminal of the first resistor is connected to reference potential and the other terminal of the second resistor is connected via the diode (D1) to the collector of the first transistor (T1) and via a third resistor (R3) to a supply voltage (+Ub), that the base of the first transistor (T1) is connected via a fourth resistor (R4) to the supply voltage (+Ub) and via a control switch (S1) to reference potential, that the collector of the second transistor (T2) is connected to the supply voltage (+Ub) and the emitter of this transistor ist connected via a fifth resistor (R5) to reference potential and possibly via a further coupling capacitor (C2) to the output terminal (A), and that the diode (D1) consists of a PIN-diode.
Patent NO-158113-C (NO)
Inventor: TAYLOR KENNARD W
IPC: F16K25/04
Filed: 1984-04-27
Abstract: @ A valve has a body (12) with a valve chamber (14) therein, an inlet (16) into the valve chamber, an outlet (18) from the valve chamber and an opening to the valve chamber aligned with the outlet, and a bonnet (20) secured to the body covering the opening, the bonnet having a tubular projection (24). A valve seat insert (34) having a valve seat (60) is positioned in the outlet, and a valve member (58) is movable toward and away from the valve seat to control flow through the valve. The valve seat insert (34) is releasably secured to the bonnet tubular projection (24). The insert is removable from the body with the bonnet (20) making it easy to replace.
Patent NO-166216-C (NO)
Inventor: STEER PETER LESLIE
IPC: A61F5/448
Filed: 1986-12-09
Abstract: An ostomy appliance intended for attachment to a peristomal area of a wearer includes a pad (20) of medical-grade skin-attachable adhesive material, a first coupling element (12) secured thereto, the element having a radially outwardly extending flange (30) attached to a surface of the pad and an upstanding rib (32) of closed loop form constructed to couple with a counterpart (second) coupling element (56) on a bag or pouch (64). An inner chute member (24) is located radially within and adjacent to the first coupling element, the chute member having a substantially cylindrical wall (72) covering the whole of the radially inner surface of the first coupling element. At one of its ends, the chute has a radially outwardly extending flange (70) positioned so that it traps the chute member in position when the two coupling elements are coupled toqether.
Patent NO-171671-C (NO)
Inventor: SCHIMMEL GUENTHER
IPC: C01B33/32
Filed: 1988-05-31
Abstract: Crystalline sodium silicates having a layered structure and a molar SiO2:Na2O ratio of 1.9:1 to 3.5:1 are prepared from water glass solutions having a solids content of 20 to 65 % by weight by first treating the water glass solutions in a spray-drying zone. This gives a pulverulent amorphous sodium silicate having a maximum loss on ignition of 20 % by weight, while the waste gas leaving the spray drying zone has a temperature of at least 140 DEG C. The spray-dried sodium silicate is then heat treated in an ignition zone having a movable solid bed at temperatures of 500 to 800 DEG C for 1 to 60 minutes in the presence of at least 10 percent by weight of recycled material. This recycled material was obtained by mechanical comminution of crystalline sodium silicate discharged from the ignition zone.
Patent NO-178754-C (NO)
Inventor: GRETER ANDREAS
IPC: B01L3/02
Filed: 1990-05-31
Abstract: Pipetting insert (11) for a pipetting device for taking a liquid sample (12) from a vacuum tube (13) which is closed airtight by a stopper (14). 
<??>To preclude an undesired escape of sample fragments from the vacuum tube before sampling, the pipetting insert is characterised in that
 a) it consists of a plastic,
 b) it has an elongate body which has at one end a conical part (15), at the other end a hollow tip (17) which is formed by a wall (18) which can be pierced by a pipetting needle and, in between, a middle tubular part (16),
 c) the middle part (16) of the body has, along its longitudinal axis (Z-Z) a bore (21) which connects the interior (22) of the conical part (15) to the interior (23) of the hollow tip (17), and
 d) the outer wall (24) of the middle part (16) of the body contains at least one connecting channel (25) which extends between the conical part (15) and the tip (17) and whose cross-section is substantially smaller than the cross-section of the bore (21) of the middle part (16) of the body. 
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Patent CA-2001031-C (CA)
Inventor: BLASS JACOB MOSES
IPC: A61C15/04
Filed: 1989-10-19
Granted: 1999-06-08
Abstract: Fluorocarbon polymer powder particles, e.g. particulate PTFE, are included, as a solid lubricant, in the binder applied to dental floss or tape.
Patent CA-2003681-C (CA)
Inventor: HOOTS JOHN E
IPC: G01N33/18
Filed: 1989-11-23
Granted: 2002-08-20
Abstract: TITLE OF THE INVENTION            TRANSITION METALS AS TREATMENT CHEMICAL TRACERS            ABSTRACT OF THE INVENTION      Methods for utilizing transition metals as tracers in  aqueous  liquid  systems  are  provided  by  this invention.  Transition metals with low background levels in  system  waters  are  identified  as  preferred  when soluble in said aqueous liquid systems.  The transition metals show low levels of deposition on equipment scale and provide  reliable  information  as to the process history of the liquid systems.
Patent CA-2005615-C (CA)
Title: Composite metal-elastomer styled wheels and method and apparatus for molding the same
Inventor: STALTER ROBERT J SR
IPC: B60B5/02
Filed: 1989-12-15
Granted: 1995-12-26
Abstract: An improved composite metal-elastomer styled automotive-type wheel with a three-dimensionally contoured ornamental outboard face formed by a plastic overlay body permanently adhered or affixed to the outboard face, and an improved molding apparatus and method for constructing such a wheel. A plastic overlay body has an annular row of  outboard  pockets  disposed  in  radially  offset,  axially overlapping relation with a annular row of inboard pockets which in turn register with vent openings in the disc to thereby provide air passages through the wheel for brake ventilation.   The outboard pockets preferably are disposed radially remote from the center of the wheel close to the wheel rim, and a relatively thin cross-section of plastic material is molded so as to overlie the outboard rim flange to provide a full-face appearance to the wheel.  In the method and apparatus of the invention the mold cavity is provided with perimeter air vents to enable thin cross-section molding adjacent the outer perimeter of the mold cavity.
Patent CA-2013869-C (CA)
Title: Method for removing nitrogen oxides from exhaust gases
Inventor: KUMAGAI MIKIO
IPC: B01J29/42
Filed: 1990-04-04
Granted: 1999-07-20
Abstract: Disclosed herein is a method for removing nitrogen oxides from exhaust gases containing oxygen and moisture, which comprises bringing the exhaust gas into contact with hydrogenated zeolite catalysts or hydrogenated zeolite catalysts impregnated with one or more kinds of metals selected from the group consisting of copper, zinc, vanadium, chromium, manganese, iron, cobalt, nickel, rhodium, palladium, platinum, and molybdenum, in the presence of organic compounds.  The zeolite should be a zeolite having a silica/alumina ratio of 5 or above.  The zeolite may be any one of zeolite of Y type, zeolite of L type, zeolite of offretite-erionite mixed crystal. type, zeolite of ferrierite type, zeolite of mordenite type, zeolite of clinoptilolite type, and zeolite of ZSM-5 type.
Patent CA-2014477-C (CA)
Title: Rotary shock absorber with a controlled damping rate
Inventor: SHTARKMAN EMIL M
IPC: F16F9/14
Filed: 1990-04-12
Granted: 1994-04-05
Abstract: Abstract A rotary shock absorber for damping relative movement between parts includes a housing connectable two one of the parts and a shaft having its axially opposite ends connectable with another one of the parts.  The housing defines at least one chamber for a field-responsive fluid.          The shaft is supported for rotation about its longitudinal central axis relative to the housing.  A rotor blade is disposed in the chamber and is connected with the sheet and extends radially of the shaft.  The rotor blade is angularly movable in the chamber.  A number of energizeable electromagnetic coils is provided for, when energized, applying an energy field to the fluid in the chamber.  The shear resistance of the fluid varies as a function of the energy field acting on the fluid.  When the parts move relative to each other, the shaft rotates about its longitudinal central axis relative to the housing and the rotor blade moves angularly in the chamber.  The angular movement of the rotor blade in the chamber is resisted by the fluid.  The resistance to movement of the rotor blade in the chamber varies as a function of the shear resistance of the fluid.  Thus, the resistance to relative movement of the parts, and hence the damping rate of the rotary shock absorber, varies as a function of the energy field applied to the fluid in the chamber.
Patent CA-2015298-C (CA)
Title: Dust seal for gyratory crushers
Inventor: JOHNSON LOUIS W
IPC: E21B21/00
Filed: 1990-04-24
Granted: 1998-06-23
Abstract: A first annular seal member on the base of a gyratory rock crusher is associated with a second annular seal member on the crusher cone.  These two seal members have cooperating spherical surfaces which rub slidably together in the gyratory movements.  An air sealing chamber is formed by the sealing members and other portions of the crusher and is associated with an annular groove in the first seal member having an inlet with a forced air system in an arrangement wherein air currents intercept dust moving along the spherical surfaces and also carry such dust away from inner portions of the crusher.
Patent CA-2038579-C (CA)
Title: Utilization of enzymes
Inventor: BEGGS THOMAS S
IPC: A61K47/48
Filed: 1991-03-19
Granted: 1998-06-23
Abstract: One or more vehicles, which may be acceptable to enter the mouth, contain at least one of two cooperating enzymes plus means to link them together.  One enzyme generates an intermediate which is used by the other enzyme to generate a substance preferably hypohalite, which acts at the target site.  The means to link then causes the intermediate to be formed peroxidase to the enzyme which uses it.
Patent CA-2048960-C (CA)
Title: Ultrasonic doppler blood flowmeter
Inventor: HAGIWARA HISASHI
IPC: A61B8/06
Filed: 1991-08-12
Granted: 1995-08-01
Abstract: An ultrasonic Doppler blood flowmeter is disclosed, in which in order to produce supplementary Doppler shift data correctly for Doppler shift data having a period corresponding to the half of repetition frequency of transmitted pulses in the Doppler mode, Doppler shift data from a phase detector is treated as complex data, and the difference in argument between two consecutive, complex Doppler shift data is detected by a difference-in-argument calculation means, to calculate the supplementary Doppler shift data by an arithmetic circuit on the basis of the difference in argument between the consecutive complex Doppler shift data.
Patent CA-2049758-C (CA)
Title: Optical character recognition system and method
Inventor: HIGGINS RAYMOND L
IPC: G06K9/50
Filed: 1991-08-23
Granted: 1998-05-19
Abstract: A system and method are disclosed for optical scanning and recognition of alphanumeric characters of different sizes and fonts such as E13B, OCRA, OCRB, and Farington 7B type fonts recorded on documents such as bank drafts and checks.  The system comprises an optical scanner, a microprocessor, a read-only-memory (ROM), a random-access-memory (RAM, with a stored program) for storing data and a plurality of predetermined character-identification patterns (templates).  Each template includes three configurations:  an actual pixel pattern (bit configuration) of a character, a configuration representing significant portions of the character which remain the same and do not change despite changes in size of the character, and a configuration representing portions of the character which are given added weight in distinguishing between similar characters.  The scanner optically scans each document and produces a plurality of gray-scale pixel values which are stored in the RAM under control of the microprocessor.  The microprocessor processes the stored pixel values, and effectively locates and segments each character on the document.  The microprocessor then converts the segmented-character pixel values to binary data corresponding to the intervals, and selects, from the plurality of templates, the template that matches the binary data, the matching template serving to identify (recognize) the segmented character.
Patent CA-2050588-C (CA)
Inventor: PEDEN LARRY L
IPC: H04N7/173
Filed: 1990-04-19
Granted: 2000-10-17
Abstract: A video distribution system (100) transmits selected video programs to a number of independently controlled video monitors (102). The video monitors (102) are arranged in groups, each group being coupled to a distinct transmission medium (110). A  program selector (120, 122, 124) associated with each video monitor generates video connection requests which specify a video source to be connected to that video monitor. A two stage video switch apparatus (114) couples specified video sources (112) to specified video monitors (102). The first stage (160) routes specified video signals from the video sources to the second stage (170), which is a frequency multiplexer.      The frequency multiplexer (170) then transmits the specified video signals for each group of video monitors in distinct frequency bands on one of the transmission mediums (110). Each video monitor (102) within each group of monitors has a tuner that is tuned to receive the video signal in a distinct one of the frequency bands. In effect, the transmission medium (110) for each group of video monitors has a separate transmission channel for each of the monitors in the group. Finally, the system (100) has a controller (116) which receives the video connection requests, and controls the video switch apparatus (114) so that it couples specified video sources to specified video monitors.
Patent CA-2055299-C (CA)
Inventor: LACCHIA ADRIEN
IPC: B05B12/14
Filed: 1991-11-12
Granted: 2002-01-01
Abstract: Installation de projection électrostatique de produit de revêtement conducteur, comportant un isolateur à élément mobile, notamment un élément de conduit mobile pour séparer deux parties du circuit de distribution.  Selon l'invention, l'isolateur est connecté à un ensemble de vanne réparties en aval et en amont et connecté pour établir la liaison avec une source de produit de rinçage et une source d'air comprimée pour nettoyer et purger ledit isolateur avant chaque manoeuvre d'ouverture de celui-ci.
Patent CA-2066529-C (CA)
Title: Digital cellular switching system with means for securing uninterrupted data transparency during handoffs
Inventor: KOJIMA SUSUMU
IPC: H04J3/00
Filed: 1992-04-21
Granted: 1996-05-07
Abstract: In a cellular communications system, the quality of a signal over a first two-way connection from a destination to a mobile terminal is compared with a threshold. When the signal quality becomes lower than the threshold, a second two-way connection is established and a switching request signal and an information-bearing signal are sent from the mobile terminal through both connections to a switching exchange. In response to the request signal, one directional path of the first connection is cleared by the exchange to prevent a version of the signal passing through the first connection from reaching the destination and a first switching complete signal is sent through the other path of the first connection to the mobile terminal to allow it to clear the first connection and return a second switching complete signal. The other path of the first connection is then cleared by the exchange in response to the second switching complete signal.
Patent CA-2067034-C (CA)
Title: Instrument and method for viscoelasticity measurements
Inventor: MATHEWS MICHAEL
IPC: G01N33/44
Filed: 1992-04-24
Granted: 2002-03-05
Abstract: The invention elates to an instrument for measuring the viscoelastic properties of rubber and like materials comprising two opposed dies,(11) and (12), each die having a die housing (13), (14), the dies and housings being moveable between an open position and a closed position, and wherein: a) each die is separated from its housing by a substantially uniform circumferential gap (20, (21) such that the die is rotatable relative to its housing, and one die is rotatable relative to the other, b) in the closed position, the two dies define between them a cavity (15) for holding under pressure a sample of material to be tested, (c) the design of the dies and housings is such that during movement from the open position to the closed position, a sample of test material located between the dies (11), (12) is compressed so that excess material is extruded radially from between the dies, across the gap (20), (21) between 15 each die and its housing and through a narrowing space (16) separating the housings until the two housings (13), (14) reach their closed position, in which position the said space (16) is sealed. In prior art instruments, at least one annular seal (5) of heat-resistant elastomeric material is positioned between each die (1), (2) and its housing (3), (4) to ensure that a sample of material in the die cavity (6) is maintained under pressure during a test. In the instrument of the present invention, no such seal is required. The radial dimension of the gap (20), (21) between each die and its housing is significantly less than in prior art instruments, and sheets of film (18), (19) of heat and distortion-resistant material are used to bridge the gaps (20), (21).
Patent CA-2069176-C (CA)
Title: Product loading system
Inventor: DAVIS ROBERT
IPC: B65B43/26
Filed: 1992-05-21
Granted: 2005-08-09
Abstract: A system for loading product into a container comprises a conveyor with side by side staggered delivery portions, a pair of side by side bottom opening receptacles fed at different times by the deliver portions of the conveyor, a hopper moveable in an alternating manner to a product receiving position beneath each of the receptacles and a container holder below and fed by the hopper.
Patent CA-2070209-C (CA)
Inventor: VOLKERT OTTO
IPC: C08G18/66
Filed: 1992-06-02
Granted: 1997-05-13
Abstract: A process for the production of rigid foams containing urethane groups or urethane and isocyanurate groups, by reacting a)  an organic and/or modified organic polyisocyanate with b)   at  least  one  relatively  high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired, c)   a low-molecular-weight chain extender and/or cross-linking agent, in the presence of d)   a blowing agent, e)   a catalyst and, if desired, f)   assistants and/or additives, in which the blowing agent (d) used is at least one vinylfluoroalkane of the formula CH2=CH-CnF2n+1 in which n is an integer from 1 to 6, (di), or a mixture of at least one such vinylfluoroalkane (di) and at least one further physical and/or chemical blowing agent (dii) which is different from (di), and blowing agent-containing emul-sions which contain at least one vinylfluoroalkane and at least one starting component (a),  (b),  (c) or (b) and (c).
Patent CA-2073977-C (CA)
Title: Ignition device
Inventor: SHIKE TSUTOMU
IPC: F23Q2/28
Filed: 1991-11-29
Granted: 1995-11-21
Abstract: An igniting device has a valve mechanism 8 which controls fuel supply from a gas reservoir, a gas injection nozzle 26 provided on a tip of a rod-like portion projecting from the valve mechanism 8 and a discharge electrode 32 which is disposed in the vicinity of the gas injection nozzle 26 and produces discharge spark to ignite the fuel gas discharged from the nozzle. A nozzle cover 30 made of non-conductive material is provided around the gas injection nozzle 26.  The nozzle cover 30 is provided with a front end face 31a disposed in front of the nozzle at a distance therefrom.  The front end face 31a is cut away at a portion opposed to the gas injection nozzle 26 and a portion opposed to the discharge electrode 32 to form an opening.
Patent CA-2075020-C (CA)
Title: Method for preparing semiconductor member
Inventor: ICHIKAWA TAKESHI
IPC: H01L21/20
Filed: 1992-07-30
Granted: 1998-07-28
Abstract: A method for preparing a semiconductor member comprising steps of: making a silicon substrate porous; forming a non-porous silicon monocrystalline layer on the porous silicon substrate at a first temperature; bonding a surface of the non-porous silicon monocrystalline layer on to another substrate having an insulating material on the surface thereof; etching the porous silicon by removing the porous silicon of the bonded substrate by chemical etching; and forming a monocrystalline silicon layer on the non-porous silicon monocrystalline layer by epitaxial growth at a second temperature higher than the first temperature.
Patent CA-2075041-C (CA)
Title: High strength cord
Inventor: HELFER FARREL BRUCE
IPC: B60C9/00
Filed: 1991-03-11
Granted: 2001-04-17
Abstract: Steel reinforcing cords (36) having filaments (38,40,42 & 44) with a tensile strength of at least 33$0 N/mm2 for reinforcing elastomeric articles such as tires.
Patent CA-2088157-C (CA)
Inventor: POLSKI STEPHEN P
IPC: A61L15/42
Filed: 1991-09-23
Granted: 1996-11-05
Abstract: A polyethylene-containing foam-backed absorbent article (1) having an adhesive patch (3) comprised of 25 to 50 parts of an A-B block copolymer and 25-50 parts of solid tackifying resin and liquid resin and/or plasticizing oil. The adhesive not exhi-biting any adhesive transfer when removed from a cotton fabric after one hour at 100 °F and 0.25 P.S.I.
Patent CA-2100414-C (CA)
Title: Hydrophobic polyelectrolyte coagulants for the control of pitch in pulp and paper systems
Inventor: FINCK MARTHA R
IPC: D21H17/41
Filed: 1993-07-13
Granted: 2007-07-03
Abstract: A method for controlling pitch in papermaking systems which comprises the step of adding a hydrophobic polyelectrolyte copolymer coagulant to pulp and paper process water. The hydrophobic polyelectrolyte copolymer coagulant comprises diallyldimethylammonium chloride and a hydrophobic monomer selected from the group consisting of:  quaternized dimethylaminoethylacrylates and quaternized dimethylaminoethylmethacrylates.