baber/WOPTO huggingface dataset:
Patent CA-2076098-A1 (CA)
Title: High-order, plural-bit-quantization sigma-delta modulators using single-bit digital-to-analog conversion feedback
Inventor: RIBNER DAVID B
IPC: H03M3/04
Filed: 1992-08-13
Abstract: HIGH-ORDER, PLURAL-BIT-QUANTIZATION SIGMA-DELTA MODULATORS USING SINGLE-BIT DIGITAL-TO-ANALOG CONVERSION FEEDBACK              Abstract of the Disclosure A high-order sigma-delta modulator has a single feedback loop including a linear network and a quantizer, which quantizer comprises a plural-bit analog-to-digital converter, a digital comparator and a single-bit digital-to-analog converter. The linear network comprises a cascade of integrators, a second-order resonator, a cascade of second-order resonators or a cascade of second-order resonators with an additional integrator. The loop behaves much the same as a conventional single-feedback-loop, one-bit sigma-delta modulator, inasfar as the feedback signal is concerned. However, a plural-bit preliminary output signal is available, so the truncation error can be determined. The truncation error is cancelled in the ultimate output signal from the high-order sigma-delta modulator, using additional digital circuitry having the a transfer function analogous to the overall transfer function for input signal of the cascade connection of the linear network, plural-bit analog-to-digital converter in the quantizer, and any scaling circuitry therein or thereafter.
Patent CA-2077195-A1 (CA)
Title: Convertible bottle closure
Inventor: HOLODY WITOLD V
IPC: B65D41/26
Filed: 1992-08-28
Abstract: Page....2 A B S T R A C T     (1)  CONVERTIBLE BOTTLE CLOSURE invented  and  claimed by  myself  for  patent, eliminates  all  kinds  of plastic  drinking  cups  used  once  for  all.      (2)  Above  CONVERTIBLE BOTTLE CLOSURE shall  be  produced from  all  kinds  of  soft  plastics  to  prevent  cracks, and  should  be  safe  for  automatic  dishwasher.       (3)  Said  CONVERTIBLE BOTTLE CLOSURE is iterchengable with  every  group  of  bottles  and  shall  be  produced in  three  sizes. Separate  sizes  should  be  produced  for;           - 1 liter  bottle - 2 liter  bottle - 3 liter  bottle (4)  Decoration  and  commercial  advertisement  can  be placed  on  the  outside  surface  of  the  CONVERTIBLE BOTTLE CLOSURE after  consultation  with  inventor.       (5)  As  a  convenient  vessel and  CONVERTIBLE BOTTLE    CLOSURE it  will  find  a  place  in  every  car, van, recreational  vehicle, boat, every  kitchen  and  refrigerator.       (6)  Above  CONVERTIBLE BOTTLE CLOSURE can  be  sold to  customers  at  all  Convenient  Stores, Food  Stores, and  Gas  Stations  across  Canada  and  U.S.A.
Patent CA-2081011-A1 (CA)
Title: Spiro[benzofurancycloalkane]carboxamides as 5ht3 antagonists
Inventor: YOUSSEFYEH RAYMOND D
IPC: A61K31/443
Filed: 1991-04-09
Abstract: This invention is directed toward certain spiro[benzofuran-2(3H),1'-cycloalkane]carboxamides and their use as 5HT3-antagonists having unique central nervous system, anti-emetic and gastric prokinetic activity void of any significant D2-receptor binding properties. This invention also discloses novel processes necessary for their preparation.
Patent CA-2081529-A1 (CA)
Title: Electrical and electronic parts formed of polybutylene naphthalenedicarboxylate
Inventor: KOJIMA TAKESHI
IPC: H01F41/12
Filed: 1992-10-27
Abstract: An electrical or electronic part having excellent resistance to moist heat, such as a coil bobbin, a condenser case, an IC carrier, a plug, a socket or a fuse case, formed from a polybutylene naphthalenedicarboxylate resin as a raw material; and a flame-retardant resin composition and an electrical part therefrom are also provided.  The flame-retardant resin composition exhibits high fluidity and forms little burr, and the electrical part has excellent flame retardancy and well-balanced properties.
Patent CA-2084540-A1 (CA)
Title: Measuring system for the determination of the concentration of inorganic and organic compounds in a sample
Inventor: ZIMMERMANN ANDREAS
IPC: C09K11/06
Filed: 1992-12-04
Abstract: Abstract Measuring system for the determination of the concentra-tion of inorganic and organic compounds in a sample Measuring system for the determination of the concentra-tions of inorganic and organic compounds in a sample, having a sensor to be brought into contact with the sample,  which sensor contains an optical fluorescent indicator which, upon excitation via an excitation light source, fluoresces as a function of the present concen-tration of  the  inorganic  or organic compound to be detected. The measuring system is configured for measur-ing and evaluating the incoming radiation and the re-emitted fluorescent light.            The measuring system comprises a sensor element to be brought into contact with the sample, said sensor element being composed of a polymer matrix which is prepared from a)   a matrix component derived from one or more units of the formula I                               in which   (I) R1- is hydrogen, deuterium or methyl; R2-  and R3-,  independently  of  one  another,  are hydrogen, deuterium or methyl, and the degree of polymerization n is an integer in  the range from 80  to 2500, preferably from 200 to 2000;     b)   a dye component which is immobilized covalently on the acyl chloride groups of the matrix component, and c)   one or more swelling components which are bound covalently  at  the  remaining  free  acyl  chloride groups of the matrix component.
Patent CA-2085165-A1 (CA)
Inventor: VAN OIRSCHOT FRANK
IPC: F15D1/02
Filed: 1992-12-11
Abstract: An air return is useable in a venturi system having an upstream air induction member feeding a product flow line downstream of the air induction member.  The air return itself comprises a housing having a product flow region to be fitted in line with the product flow line, an air draw region separated from the product flow region by a perforate divider with a baffle internally of the divider and an air flow line from the housing to be fitted back to the air induction member.
Patent CA-2085612-A1 (CA)
Title: Method of cleaning reflector mirror in optical dew point meter and an optical dew point meter equipped with a cleaning device
Inventor: NISHIZAWA JUNICHI
IPC: B08B7/00
Filed: 1992-04-17
Abstract: A method of cleaning a reflector mirror in an optical dew point meter that measures the dew point or frost point of a sample gas by a process including the steps of bringing the sample gas into contact with the reflector mirror whose temperature is variable, projecting condensed rays of light or laser light onto said reflector mirror, and detecting the change in the intensity of scattered light and/or reflected light on account of the dew or frost formed on said reflector mirror, characterized by bringing a CO2 gas or a CO2 containing gas into contact with the reflector while the latter is in a cooled state, thereby condensing CO2 on the surface of the reflector mirror, and the subsequent step of heating the reflector mirror to vaporize the CO2 is disclosed.
Patent CA-2086029-A1 (CA)
Inventor: YAMADA TADAYOSHI
IPC: G03B21/625
Filed: 1992-12-22
Abstract: A rear projection screen unit in a large-size picture display system, composed by combining a plurality of rear protection screen panels arranged in a lattice square with at least one ordinate and abscissa beams disposed between the adjacent screen panels, wherein each of said screen panels intersects with each of said beams which themselves intersect with each other to form the lattice square, and each of said screen panels and ordinate and abscissa beams are connected together by a multiple mortise-and-tenon joint.  The lattice square is installed in a outer frame and stressed in the four directions by a resilient members provided on the outer frame.   The disclosed structure has minimized the width of the non-effective area in the screen unit, and realized a high reliability in installing strength of the respective screen panels in an integral body suitable for the large-size picture display system.
Patent CA-2087342-A1 (CA)
Title: Serine protease variants having peptide ligase activity
Inventor: ABRAHMSEN LARS
IPC: C12P21/02
Filed: 1991-08-06
Abstract: The invention relates to serine protease variants derived from precursor serine proteases via recombinant and/or chemical methods to form protease variants having improved peptide ligase activity. The invention also includes novel ligation substrates which in combination with the serine protease variants and a second ligation substrate are capable of forming a ligation product. The invention also relates to methods for forming such ligation products and the products formed thereby.
Patent CA-2088586-A1 (CA)
Title: Polymer blends of polyesters and polystyrene for aqueous inks
Inventor: CASSELL MICHAEL L
IPC: C08L67/02
Filed: 1991-08-01
Abstract: Disclosed are polymer blends of polyesters or polyesteramides and a styrene polymer. The blends are preferably prepared by polymerizing a styrene monomer in the presence of the polyester or polyesteramide. The blends impart superior water resistance, block resistance, and/or gloss to aqueous inks.
Patent CA-2091606-A1 (CA)
Title: Method for improving a nonionic surfactant blend
Inventor: GEDNALSKE JOE V
IPC: A01N25/30
Filed: 1993-03-15
Abstract: A nonionic surfactant blend for use with compatible herbicides. The nonionic surfactant blend includes an effective amount of an acidulated soybean soapstock. The acidulated soybean soapstock includes a range of total fatty acids of about 94%-to-96% by volume and a moisture content of not more than about 5% by volume. The present invention also includes a method for improving the performance of a herbicide. The method includes providing an effective quantity of the improved nonionic surfactant blend for combination with the herbicide.
Patent CA-2092231-A1 (CA)
Inventor: BARTH RANDOLPH S
IPC: F02B27/06
Filed: 1993-03-23
Abstract: ADJUSTABLE TORQUE/HORSEPOWER EXHAUST CONTROL SYSTEM   Abstract of the Disclosure An automotive vehicle header system is described as incorpor-ating a collector having pipes of inside diameter slightly greater than the outside diameter of the pipes exiting  from the engine heads which are coupled to it.  This permits a removable insertion of one set of pipes into the other, for ease of installation and later servicing of the engine and vehicle, and allows for a slid-ing of the collector towards, or away from, the engine as desired, to controllably adjust available torque and/or horsepower.  In a preferred embodiment of the invention, the lengths for the collec-tor pipes are individually selected so as to equalize the total lengths of all pipes from the engine cylinders to the output end of the collector.
Patent CA-2092680-A1 (CA)
Title: Epstein-barr virus sequences and protein thereof
Inventor: MIDDELDORP JAAP M
IPC: C12N1/15
Filed: 1993-03-12
Abstract: The present invention relates to peptides immunochemically reactive with antibodies to the Epstein-Barr virus (EBV), comprising at least part of the VCA-p18 or VCA-p40 protein, encoded within the EBV open reading frames BFRF3 and BdRF1 respectively, or a functional variant thereof.    The invention further relates to nucleic acid sequences encoding these peptides, monoclonal antibodies against these peptides, cell lines capable of producing monoclonal antibodies and anti-idiotype antibodies. The invention also relates to recombinant vector molecules comprising a nucleic acid sequence according to the invention and host cells transformed or transfected with these vector molecules. The invention is further concerned with immunological reagents and methods for the detection of EBV or anti-EBV antibodies and a method for the amplification and detection of Epstein Barr viral nucleic acid.
Patent CA-2092925-A1 (CA)
Title: Incontinence bladder control method and apparatus
Inventor: SCHWARZ GERALD R
IPC: A61F2/04
Filed: 1990-10-18
Abstract: A method and apparatus for controlling urinary incontinence in a patient includes positioning a reservoir (22) containing fluid subcutaneously over the patient's anterior pubis (16); an inflatable compression balloon (24, 66) between the patient's posterior pubic symphysis and bladder neck/urethra (12, 14); and a fluid conduit (26) extending over the pubis between the reservoir and said compression balloon. The compression balloon is inflated in response to fluid flow from said reservoir, when manually compressed by the patient. A manually releasable, one-way valve (46) positioned in the conduit retains fluid in the compression balloon under pressure and is externally actuable by the patient for equilibrating pressure to permit voiding. The bladder of the patient is elevated and connected anteriorly to the patient's abdominal wall by a felt matrix or mesh patch (30, 32) affixed to the bladder to effectively lengthen and stabilize the urethra. The compression balloon is arranged and positioned to compress in an inferior-posterior direction solely against an extended area the anterior side of urethra for occluding the urethra.
Patent CA-2093142-A1 (CA)
Inventor: KOTLYAR LUBA S
IPC: B01D21/00
Filed: 1993-03-26
Abstract: The invention disclosed relates to a process for the separation of a thixotropic gel-like solids suspension, such as oil sands sludge/fine tails, into a plurality of fractions of useful materials. The process involves mechanically agitating the suspension to break the gel-like structure, followed by mild centrifugation to release from suspension by enhancing the settling rate of the coarser solids. Of particular interest are colloidal solidsfractions, one having gel-forming properties and the other exhibiting emulsifying characteristics.
Patent CA-2094551-A1 (CA)
Inventor: KALLENBERGER HARVEY J
IPC: F16H55/12
Filed: 1993-04-21
Abstract: Abstract of the Disclosure An aspect of the invention is an improved method for servicing a gear assembly having a gear segment and a spider for supporting the segment. The method includes the steps of providing a jack assembly with a jacking bolt mounted for radial outward movement, moving the jacking bolt radially outward, applying a separating force to the segment and disengaging the segment from the spider.  Further steps involve providing a drawtight assembly with a coupler attached to the segment, applying a force to the coupler, moving the coupler radially inward and engaging the segment with the spider.  Other aspects of the invention include the "jacking" apparatus for separating a segment from the spider (for service purposes) and the "drawtight" apparatus for re-attaching the segment to the spider. The invention is particularly useful in connection with large machinery, e.g., a walking dragline, involving heavy and/or unevenly-wearing gear parts and difficult field service conditions.
Patent CA-2096233-A1 (CA)
Title: Formable washing composition based on selected insoluble silicones and an alkylpolyglycoside, and cosmetic and dermatological uses thereof
Inventor: DUBIEF CLAUDE
IPC: A61K8/00
Filed: 1991-11-15
Abstract: A foamable washing composition for hair and skin care contains: an insoluble silicone selected from silicone gums, silicone resins, and organomodified silicones comprising one or more thiol, carboxylate, $g(g)-hydroxypropyl, alkylcarboxylic acid, hydroxyalkylsulphonate, hydroxyalkylthiosulphate or hydroxyacylamino groupings, and mixtures thereof; and 4-60 % by weight of a compound of formula (I) which corresponds to structure (II), where R denotes a C8?-C24? alkyl or alkenyl radical or radical mixture, and x is 1-15; the weight ratio of the compound of formula (I) and the silicone being equal to or greater than 1.
Patent CA-2096858-A1 (CA)
Title: Seal assembly
Inventor: NEUTGENS KURT J
IPC: F01L1/053
Filed: 1993-05-25
Abstract: Abstract of the Disclosure An improved seal assembly capable of sealing a rotatable shaft protruding from a fluid-containing chamber in an internal combustion engines and the like.  The improved seal characteristics of the seal assembly are largely attributed to surface interface between the seal cap and the main body of the seal assembly.  More particularly, the seal cap includes a pair of legs each having fractured ends which are in end-to-end engagement with corresponding legs of the main body also having fractured ends.  By mating corresponding fractured ends of respective legs of the seal cap and the main body, an improved seal is provided.  A method by which such an improved seal assembly can be manufactured is also disclosed.
Patent CA-2098536-A1 (CA)
Title: Glass fiber reinforced propylene polymer graft composition
Inventor: KILIUS DARREL E
IPC: C08L25/04
Filed: 1993-06-16
Abstract: Disclosed are compositions comprising, (a) a propylene polymer material grafted in the solid state with (i) styrenic polymer and further comprising (ii) ungrafted styrenic polymer, and, optionally (iii) a vinyl comonomer and when the optional vinyl comonomer is used, (iv) styrenic-vinyl copolymer; and (b) glass fibers treated with an organic silane compound; and optionally (c) at least one rubber polymer component comprising (1) from about 0 to 100% of at least one of (i) monoalkenyl aromatic hydrocarbon-conjugated diene block copolymers, (ii) hydrogenated products of (i), or (iii) mixtures of (i) and (ii); and (2) from about 100 to 0% of an olefin copolymer rubber; and (d) a coupling agent for the glass fibers and propylene polymer material plus said rubber polymer. The compositions exhibit a preferred balance of stiffness and impact strength at moderate cost and exhibit excellent surface qualities, making them particularly useful in molded parts.
Patent CA-2099253-A1 (CA)
Inventor: BODET PAUL W
IPC: G08B5/22
Filed: 1991-12-12
Abstract: A user of a selective call receiver (100) is capable of inputting and storing user defined search key informa-tion and user defined corre-sponding information into non-volatile memory (107), via user input control (109). Subsequent to receiving and decoding a message having a message information and storing the message informa-tion into memory (106), the selective call receiver (100) is capable of searching the message information for an occurrence of the user de-fined search key informa-tion, and presenting the mes-sage information and at least a portion of corresponding information for an occur-rence of corresponding user defined search key informa-tion in the message informa-tion.
Patent CA-2100299-A1 (CA)
Inventor: MARIN CARLO
IPC: H01B7/282
Filed: 1993-07-12
Abstract: An electrical power cable with a stranded conductor, a semi-conductive stress control layer around the conductor, a layer of insulation around the stress control layer, a semi-conductive insulation shield layer around the layer of insulation, an imperforate metal strip with overlapping edge portions around the shield layer and a polymeric jacket around the metal strip.  The strip is free to move with respect to the jacket and the shield layer with expansion and contraction of the cable elements with temperature changes, and the overlapping edge portions of the strip are bonded together by an adhesive which permits the edge portions to move relative to each other with such temperature changes without creating fluid passageways between the edge portions.  A cushioning layer can be between the shield layer and the strip and preferably, the cable is water sealed.
Patent CA-2102020-A1 (CA)
Title: Compact-size optical amplifier having separate functions
Inventor: DELROSSO GIOVANNI
IPC: H01S3/10
Filed: 1993-10-29
Abstract: ABSTRACT            The  optical  amplifier  (1)  comprises  optical  components  (2-13), connection light guide sections (14) between the optical components, and electronic and electrical power supply and control components (41.42). It is characterized in that it comprises:   an optical unit (15) comprising the optical components (2-13) and the connection light guide sections (14).   an electronic  unit  (16)  comprising  the  electronic  and electrical components (41,42) and being separate from the optical unit (15), and means (43,44) of electrical interconnection between the optical unit (15) and the electronic unit (16).            The clear separation of the electronic components  (41.42) from the optical components (2-13) affords size reductions and rationalization of the amplifier (1) implementation procedure.            Fig. 1
Patent CA-2103118-A1 (CA)
Inventor: LANDER CECIL
IPC: B60G17/052
Filed: 1993-11-15
Abstract: A vehicle energy absorbing system for a vehicle having a suspension system, a frame and an axle, wherein the frame is spaced apart from the axle in a vertical direction and the suspension system  mechanically couples the frame to the axle.  The system includes an expandable air bag mechanically coupled to the frame and to the axle, a distance indicator for indicating a vertical distance between the frame and the axle attached to the vehicle, an air bag pressure control valve fluidly connected to the air bag and coupled to the distance indicator, and a source of air under pressure attached to the vehicle and fluidly coupled to the air bag pressure control valve through a control panel.   When the  indicator  indicates  a  first distance between the frame and the axle,  the valve is positioned in a first position supplying air from the source of air to the air bag at a first air pressure, and when the indicator indicates a second distance between the frame and the axle, the valve is positioned in a second position supplying air from the source of air to the air bag at a second air pressure.
Patent CA-2104038-A1 (CA)
Title: Functionalized heteroaromatics for nlo applications
Inventor: JEN KWANG-YUE A
IPC: G02F1/35
Filed: 1993-08-13
Abstract: FUNCTIONALIZED HETEROAROMATICS FOR NLO APPLICATIONS.                    ABSTRACT             Nonlinear optical materials having highly conjugated fused ring structures of two or three aromatic or heteroaromatic rings, at least one of which is a five-membered heteroarmatic ring, or structures of one to four non-fused five-membered heteroaromatic rings.  Methods of tricyanovinylating heteroaromatic ring structures to form nonlinear optical materials are also disclosed.  Polymers having the disclosed nonlinear optical materials as pendant side chains, which polymers exhibit second order nonlinear optical properties, and base polymers having pendant fused ring structures devoid of nonlinear optical properties that exhibit second order nonlinear optical properties after the covalent attachment of tricyanovinyl groups to the pendant side chains are disclosed.  Methods of tricyanovinglating the pendant side chains of the base polymers are also disclosed.
Patent CA-2104968-A1 (CA)
Title: Material for medical grade products and products made therefrom
Inventor: PATEL INDRAJIT
IPC: A61L27/00
Filed: 1993-01-22
Abstract: A non-PVC, non-DEHP material is provided for medical grade products such as tubing and containers. The material comprises a monolayer blend of a polyurethane based material. In an embodiment, the resultant product of the present invention has good low temperature characteristics, is autoclavable, and RF sealable.  Accordingly, the resultant product can be utilized for applications which heretofore have been filled in the marketplace by DEHP plasticized PVC products.