baber/WOPTO huggingface dataset:
Patent CA-2037690-A1 (CA)
Title: Method for reducing methane exhaust emissions from natural gas fueled engines
Inventor: SIEWERT ROBERT M
IPC: B01J23/44
Filed: 1991-03-07
Abstract: METHOD FOR REDUCING METHANE EXHAUST EMISSIONS        FROM NATURAL GAS FUELED ENGINES            Abstract of the Disclosure High conversion efficiencies for methane, other unburned hydrocarbons, carbon monoxide and nitrogen oxides can be obtained from a natural gas or methane fueled engine by operating the engine with an air-fuel ratio within a range that includes the stoichiometric air-fuel ratio and extends to the fuel-rich side and by employing in combination with the engine a platinum or platinum and palladium noble metal catalyst for treatment of the engine exhaust gases.
Patent CA-2038474-A1 (CA)
Inventor: SATOH YOSHIO
IPC: H03H9/64
Filed: 1991-03-18
Abstract: A SAW device comprises a substrate, input and output interdigital electrodes provided on the sub-strate alternately to form a row of electrodes, and a pair of open strip reflectors disposed at both ends of the row, the input interdigital electrodes having a first pair number representing the number of pairs of opposing finger electrodes forming the input electrode, the output interdigital electrodes having a second pair number representing the number of pairs of opposing finger electrodes forming the output electrode, wherein the first pair number and second pair number are set different in the adjacent input and output electrodes with a predetermined ratio therebetween, the first pair number is changed in each input electrodes in the row, and the second pair number is changed in each output electrodes in the row.
Patent CA-2039495-A1 (CA)
Title: Heat exchanger duct
Inventor: SCHMID KLAUS E
IPC: F03G7/06
Filed: 1991-03-28
Abstract: ABSTRACT         It is known that in heat cycle engines cranks are moved by pistons which are kept in motion by an expanding and contracting enclosed gas.  This invention comprises an endless elongated duct which, with its advanced spiral shape, an enclosed expanding and contracting gas or fluid, and two incorporated valves, rotates around a central  hub axle without employing cranks or pistons.
Patent CA-2039953-A1 (CA)
Title: Diene polymers and copolymers terminated by reaction with n-alkyl and n-aryl imines
Inventor: STAYER MARK L JR
IPC: C08F136/04
Filed: 1991-04-08
Abstract: A process is provided for preparing a terminally functionalized polymer from a living polymer obtained by anionic polymerization of a diene monomer or mixture of a diene monomer and a vinyl aromatic hydrocarbon monomer which  comprises  reacting  the  living  polymer  with  a compound having the formula:        (see fig. I) wherein R1 and R2 are selected from the group consisting of   H,   alkyl,   cycloalkyl,   aryl,   dialkylaminoaryl, aralkyl,  and  aprotic  O,  N  and  S-containing  alkyl, cycloalkyl,  aryl  and  aralkyl  groups;  wherein  R3  is selected from the group consisting of alkyl, cycloalkyl, aryl, dialkylaminoaryl, aralkyl, and aprotic O, N and S-containing alkyl, cycloalkyl,  aryl and aralkyl groups; with the proviso that at least one of the R1, R2 and R3 groups must be a dialkylaminoaryl group and that not all of the R1, R2 and R3 groups can be aryl groups.       The resultant terminally functionalized polymer has reduced hysteresis properties and may be utilized to prepare elastomer compositions and tire treads having reduced rolling resistance
Patent CA-2040623-A1 (CA)
Title: Method of killing gram negative bacteria
Inventor: BAUM JOHN MICHAEL
IPC: A23B7/16
Filed: 1991-04-17
Abstract: ABSTRACT OF THE INVENTION     The use of lantibiotics as bactericidal agents against Gram negative food-borne pathogens or Gram negative spoilage organisms such as Salmonella.          Previously, nisin was believed to be effective only against Gram positive bacteria.  It has now been found that with the removal of impurities from commercially available nisin preparations in partic-ular sodium chloride, nisin in an environment having a pH of between about 5.5 and about 6.5 is an effec-tive bactericidal agent against Gram negative bacteria.            MS #1617.2
Patent CA-2041294-A1 (CA)
Title: Odorless cosmetic compositions in gelatin capsules
Inventor: MELNIK JOSEPH
IPC: A61K8/58
Filed: 1991-04-26
Abstract: A cosmetic product is disclosed in the form of a gelatin walled capsule encompassing a cosmetic composition that includes a carrier which is a silicone polymer and an antioxidant. The antioxidant operates to inhibit degradation of the gelatin wall to prevent malodors from being generated. Retinoic acid derivatives such as retinyl palmitate are especially effective as antioxidants.
Patent CA-2044254-A1 (CA)
Title: Assay method using surface plasmon resonance spectrometry
Inventor: GARLAND PETER B
IPC: C12Q1/28
Filed: 1990-03-21
Abstract: An assay technique involves immobilising an enzyme on a solid surface and causing the enzyme to catalyse formation of a reaction product. The solid surface is provided by metal film on a glass prism, and deposition of the reaction product is monitored by surface plasmon resonance spectroscopy. The analyte may be a substrate for the immobilized enzyme, or may be part of another enzyme system which generates such a substrate.
Patent CA-2045323-A1 (CA)
Inventor: OKAYAMA HIROTO
IPC: C12N15/51
Filed: 1991-06-24
Abstract: Disclosed is an isolated non-A, non-B hepatitis virus genomic cDNA covering the entire region of the virus gene nucleotide sequence from the 1st to 9416th nucleotides, wherein the coding region is from the 333rd to 9362nd nucleotides, and the 5'- and 3'-noncoding sequences contain 332 nucleotides and 54 nucleotides, respectively.      Part of the cDNA and an antigen polypeptide as an expression product thereof are useful as a diagnostic reagent for non-A, non-B hepatitis. The antigen polypeptide is also useful as an active ingredient for a non-A, non-B hepatitis virus vaccine.
Patent CA-2046660-A1 (CA)
Title: Process for producing isoparaffinic white oil
Inventor: HOLMES-SMITH DAVID R
IPC: C10G69/12
Filed: 1990-12-05
Abstract: Isoparaffinic white oil is produced by dimerization of an isoolefin feedstock containing 9 to 15 carbon atoms per molecule by contact with a solid acidic catalyst followed by hydrogenation, preferably in two stages.
Patent CA-2046750-A1 (CA)
Title: Golf practicing platform
Inventor: GISMONDI ANTONIO P
IPC: A63B57/00
Filed: 1991-07-10
Abstract: 1   A.  Gismondithil the sole inventor of the practicing platform for use in four differeing kind of fairways lies the uphill lie the downhill lie up side slope lie down side slope lie for use in or out of door in front of a net
Patent CA-2050579-A1 (CA)
Title: Apparatus for coagulating treatment
Inventor: TOTOKI TOSHIO
IPC: C02F11/14
Filed: 1990-02-20
Abstract: An apparatus for coagulating treatment which is capable of controlling the amount of addition of a coagulant to the optimum level thereby minimizing the water content of the dehydrated cake comprises coagulant adding devices (6), (7), and (8) for causing the coagulant to be added in a variable amount to a liquid subjected to the coagulating treatment, a heat transfer detecting meter (12) disposed so as to contact the liquid to which the coagulant is to be added, the liquid to which the coagulant has been added, or the filtrate from the liquid to which the coagulant has been added and adapted to detect a feeble change in the physical property of the liquid in the form of a change in voltage, and a control device (16) for controlling the amount of addition of the coagulant in the coagulant adding device (8) so that the value of detection of the heat transfer detecting meter (12) is minimized or kept within a desired range.
Patent CA-2051886-A1 (CA)
Title: Homogeneous catalysts and olefin polymerization process
Inventor: HEFNER JOHN G
IPC: C07F17/00
Filed: 1991-09-19
Abstract: ABSTRACT     Olefins are polymerized in the presence of a homogeneous catalyst represented by the formula LTi(NR2)3 wherein L is a n-bonded ligand selected from the group consisting of indenyl, C1-C4 alkyl substituted indenyl, -OSiR3 substituted indenyl,  R is a C1-C4 alkyl group wherein each R attached to the same nitrogen atom is the same, but the R groups attached to different nitrogen atoms can be the same or different from those attached to the other nitrogen atoms.     36,489-F
Patent CA-2052495-A1 (CA)
Inventor: BROUSSOUX DOMINIQUE
IPC: B64C1/14
Filed: 1991-09-30
Abstract: ABRÉGÉ DESCRIPTIF Dispositif pour éliminer le givre forme en surface d'une paroi, notamment d'une fenêtre optique ou radioélectrique Ce dispositif comprend : un matériau piézoélectrique (10) présentant une surface active vibrante coopérant mécaniquement avec la paroi à dégivrer, et des moyens de polarisation de ce matériau piézoélectrique, comprenant une source de tension alternative (21) et des électrodes conductrices ou semiconductrices (20, 20') placées en contact avec ce matériau selon une géométrie propre à engendrer au sein de celui-ci une onde acoustique présentant une direction de vibration orientée longitudinalement (1, 2) et/ou transversalement (3) à ladite surface à dégivrer, et l'amplitude de cette vibration étant suffisante pour, respectivement, décoller et/ou briser le dépôt de givre formé sur ladite surface. Le matériau piézoélectrique (10) est de préférence un polymère ferroélectrique tel qu'un polymère du groupe comprenant le PVF2, le PVF2-TrFE, le PVDCN-VAc, le PVF2-TFE et les mélanges de ces polymères entre eux et/ou avec du PMMA ou PEMA. Les électrodes (20, 20') sont de préférence conformées en une couche mince déposée en surface du matériau piézoélectrique, et leur matériau est alors avantageusement un matériau du groupe comprenant l'oxyde d'étain-indium résistif, les polymères conducteurs dans une matrice, le silicium amorphe hydrogéné et les polyimides chargés en sels organiques. (Figure 1)
Patent CA-2053259-A1 (CA)
Title: Method of processing water, in particular bath water
Inventor: BACHHOFER BRUNO
IPC: C02F1/78
Filed: 1990-04-21
Abstract: Described is a method of processing water passed round in a closed cycle, in particular bath water. The water is treated with ozone (11), filtered (9) and reacted with a flocculent (8) and an ozone-reducing halogen. In order to maintain the quality of the recycled water at an acceptable level and, in particular, to keep the thihalomethane (THM) content below 0.01 mg/l, the incor-poration of additives is controlled as a function of the redox pot-ential (6) of the untreated water. The ratio of the quantity of floc-culent to that of halogen is preferably constant, this being most simply achieved by mixing these substance beforehand. Particu-larly suitable is a mixture of one part of sodium bromide (NaBr) and five to twenty parts of a commercially available polyalumini-um chloride (PAC) flocculent with an alumina (Al2O3) content of about 10 %.
Patent CA-2055631-A1 (CA)
Inventor: SOBOL JOHN E
IPC: E04B1/68
Filed: 1991-11-15
Abstract: An improved expansion-joint cover assembly of the type having a first base member secured to a first structural section and a second base member secured to a second structural section and a flexible-spring cover member coupled between said base members and overlying the open joint.  The improvement comprising an interchangeable trim strip portion removably secured to the end of a first wall defining a passageway in said second base to receive the free end of said cover member and an interchangeable spring support removably secured to the end of the second wall defining such passageway.  The spring support includes a support tip which engages the cover member and forces it into intimate contact with the trim strip supporting such cover member and holding it in its closed position.
Patent CA-2055731-A1 (CA)
Title: Spent catalyst disposal
Inventor: BUSH WARREN V N
IPC: C10J3/08
Filed: 1991-11-18
Abstract: A B S T R A C T                      SPENT CATALYST DISPOSAL    A process for the treatment of spent catalyst from various segments of an integrated process for the gasification of coal. Spent catalyst is fed to the gasification zone of a coal gasification reactor.     In particular, the process can be applied to dispose of spent HCN conversion catalyst which is used to remove HCN from a synthesis product gas stream.
Patent CA-2056777-A1 (CA)
Inventor: FELL BARRY M
IPC: B29C65/10
Filed: 1991-12-02
Abstract: CONTINUOUS PROCESS FOR THE PREPARATION OF UNITARY THERMOPLASTIC HONEYCOMB CONTAINING  AREAS WITH DIFFERENT PHYSICAL PROPERTIES   Abstract of the Disclosure Honeycomb materials having areas or volumes possessing different physical properties then the remainder of the honeycomb are prepared in a continuous process without requiring machining operations.
Patent CA-2057337-A1 (CA)
Title: Procedure and apparatus for producing individually designed, three-dimensional bodies usable as tooth replacements, prostheses, etc.
Inventor: ANDERSSON MATTS
IPC: A61C5/77
Filed: 1991-12-10
Abstract: A procedure for producing individually designed, three-dimensional bodies includes as part steps the identification of one or more shapes/forms (10) of one or more of said bodies (9).      A first digital representation is formed by each respective identification. Respective representation is stored and processed possibly in a computer (20). The computer is activated for one or more read-outs via one or more ports (22) of one or more representations in processed or unprocessed form. In one or more machines for production of said bodies there are included one or more switch actuators, Each respective switch actuator is actuated in an activation function in which a blank and a device acting thereon are brought into co-ordination as a result of the actuation of the device by means of relevant read-out from the computer. During this actuation, the blank is allocated the relevant read-out form. The original representation of the form (10) may possibly be subjected to modification, e.g. supplementary modification. This modification can be performed by means of a computer (20), modification in the identification, machine setting, etc.
Patent CA-2058015-A1 (CA)
Title: N-cycloalkyl norbornene dicarboximide polymers
Inventor: ASRAR JAWED
IPC: C08G61/08
Filed: 1991-12-18
Abstract: 04-21 (11034)A    N-CYCLOALKYL NORBORNENE DICARBOXIMIDE POLYMERS          ABSTRACT OF THE DISCLOSURE           Polymers of N-cycloalkyl norbornene dicarboximides exhibit high glass transition temperature, low moisture pickup and low dielectric permittivity.  Poly(N-cyclohexyl norbornene dicarboximide) has a Tg of 208°C, dielectric constant of about 2.5 and boiling water equilibrated weight gain of only about 2%.  Monomers have melting point less than 150°C and are advantageously prepared by melt polymerization with conventional metathesis ring-opening polymerization catalysts.
Patent CA-2058412-A1 (CA)
IPC: H01B5/10
Filed: 1991-12-31
Abstract: A twisted cable comprising a core (12) including at least one hard steel wire, carbon fibers and resin and conducting metal wires twisted around the core, the hard steel wire having a ratio of cross section of 10 through 40 % based on a total of cross sections of the hard steel wire and the carbon fibers.
Patent CA-2059678-A1 (CA)
Inventor: CSOTONYI GYULA
IPC: F16H37/08
Filed: 1992-01-20
Abstract: A reversible variable speed drive mechanism is disclosed formed of an engine crankshaft and a balancing shaft parallel to the crankshaft. A second pulley is non-rotatably secured to a first end of the balancing shaft.   The second pulley is coupled to a first pulley at a first end of the crank shaft by a belt. The second pulley has a belt supporting circumference which is adjustable such that the speed of the balancing shaft is adjustable by altering the circumference around which the belt travels. A planetary gear assembly is coupled to a second end of the crankshaft.  The balancing shaft sprocket is coupled by a chain to a sprocket on the planetary yoke such that the rotation of the planetary yoke is coupled to the rotation of the balancing shaft.   By altering the rotational speed of planetary yoke relative to an input gear, the output gear can be made to rotate in a first direction, in a second direction or assume a neutral stationary position. A locking sprocket is rotatably mounted on the balancing shaft. The locking sprocket is coupled by a chain to a sprocket on the input gear such that the locking sprocket rotates in response to rotation of the input gear.  By locking the locking sprocket to the balancing shaft when the output gear is in a neutral position, the speed of the planetary yoke relative to the input gear is maintained.
Patent CA-2060029-A1 (CA)
Title: Breakaway roll-up door
Inventor: HYING CLEMENT F
IPC: E06B9/58
Filed: 1992-01-24
Abstract: ABSTRACT A roll-up door has a bottom bar attached to the flexible curtain of the door. The bottom bar has transverse openings at each end adjacent to the jambs of the door frame. A breakaway shaft travels in a track in each jamb and has one end normally seated in a respective transverse opening by the interaction of spring loaded ball detents and detent recesses in the shaft and bar. The opposite ends of the shafts are connected to a counterforce mechanism that urges the shaft downwardly and are also connected to a strap wound with the curtain drum to urge the shafts upwardly against the counterforce. The breakaway shafts will separate from the bar upon impact to free the bar from engagement with the jamb and prevent damage to the door. The breakaway shafts may then be reconnected with the bottom bar.
Patent CA-2061607-A1 (CA)
Inventor: YANAGISAWA HIROAKI
IPC: A61K/
Filed: 1992-02-20
Abstract: Compounds of formula (I):        (see fig. I) wherein  R1 is alkyl or alkenyl; R2 and R3 are hydrogen, alkyl, alkenyl, cycloalkyl, aralkyl, aryl, or aryl fused to cycloalkyl; R4 is hydrogen, alkyl, alkanoyl, alkenoyl, arylcarbonyl, alkoxycarbonyl, totrahydropyranyl, tetrahydrothiopyranyl, tetrahydrothienyl tetrahydrofuryl, a group of formula -SiR a R b R c, in which R a, R b and R c are alkyl or aryl, alkoxymethyl, (alkoxyalkoxy)methyl, haloalkoxymethyl, aralkyl, aryl or alkanoyloxymethoxycarhonyl; R5 is carboxy or a group of formula -CONR8R9, wherein R8 and R9 are hydrogen atoms or alkyl, or R8 and R9 together form alkylene; R6 is hydrogen, alkyl, alkoxy or halogen; R7 is carboxy or tetrazol-5-yl; and pharmaceutically acceptable salts and esters thereof have hypotensive activity and can be used for the treatment and prophylaxis of hypertension.  They may be prepared, inter alia, by reacting a biphenylmethyl compound with an imidazole compound.
Patent CA-2061815-A1 (CA)
Title: Hockey training device
Inventor: MURPHY JOHN B
IPC: A63B69/00
Filed: 1992-02-25
Abstract: ABSTRACT OF THE DISCLOSURE           A hockey training device includes a base having a first end and a second end, a side having a bottom end and a top end, a telescoping connector, and at least one locating surface mounted on the hockey training device to support the hockey training device above a playing sur-face.  The bottom end of the side is pivotally connected to the first end of the base and the telescoping con-nector is pivotally connected to the second end of the base and the top end of the side, such that the base, side and telescoping connector form a triangle.
Patent CA-2062189-A1 (CA)
Inventor: FARR JAMES B
IPC: H02M7/53
Filed: 1992-03-03
Abstract: The present invention is an inverter      for a portable refrigerator    .  The inverter includes a square wave generator      operable by a DC voltage source     .  A timer      is also included which, in conjunction with the square wave generator, provides a multiple phase waveform for operating a compressor motor     .  For conventional three winding compressor motors, the inverter provides a six-step waveform for operation of the portable refrigerator.  The inverter can also drive the motor using either a first or second DC voltage level, by minor changes in the inverter and using either a wye      or delta      winding configuration.  The inverter also includes a protection circuit      which protects against locked rotor and overload current, as well as a shut-off circuit    to guard against operating at low speeds and completely draining the battery.
Patent CA-2066805-A1 (CA)
Title: Polymers and their preparation
Inventor: KIMPTON PAUL T
IPC: C11D3/37
Filed: 1992-04-22
Abstract: Polymers can be prepared by polymerizing appropriate monomers in a substantially non-aqueous liquid medium comprising a detergent and/or an ester of a polyhydric alcohol. The invention also includes novel polymers which can be prepared by this process.
Patent CA-2066954-A1 (CA)
Title: Guide mechanism for passenger conveyors
Inventor: DATEMA DOUGLAS N
IPC: B66B23/14
Filed: 1992-04-23
Abstract: GUIDE MECHANISM FOR PASSENGER CONVEYORS     ABSTRACT      A guide mechanism for a passenger conveyor which includes a series of passenger platforms supported on and movable along a frame which has a support track for support rollers mounted on the platforms.    The guide mechanism includes a monotrack guide rail, and a pair of horizontal pinch rollers supported by each passenger platform.  The pinch rollers are in engagement with opposite sides of the monotrack guide rail.   one of the pinch rollers is of a lower compression stiffness than the other pinch roller. The guide mechanism is coupled to a walking beam assembly wherein a pair of support rollers are mounted at opposite ends of a beam extending in the direction of movement of the conveyor, and the guide rail mechanism is coupled to the beam between the pair of support rollers.
Patent CA-2067011-A1 (CA)
Title: Electrophotographic photoreceptor
Inventor: NOZOMI MAMORU
IPC: G03G5/05
Filed: 1992-04-24
Abstract: ABSTRACT      An electrophotographic photoreceptor disclosed herein has on a conductive base, a photoconductive layer containing at least a charge generation material and a charge transport material, the photoconductive layer further containing an organic acid, whose acid dissociation constant pKa in its aqueous solution is in a range of 2.1 to 4.3, in an amount of 0.001 to 10 parts by weight per 100 parts by weight of the charge transport material.  The photoconductive layer may be the laminated-type photoconductive layer or the dispersion-type photoconductive layer.  The electrophotographic photoreceptor according to the invention is excellent in durability.
Patent CA-2069722-A1 (CA)
Title: Method for functionalizing synthetic mesoporous crystalline material
Inventor: BECK JEFFREY S
IPC: C10G11/05
Filed: 1992-05-27
Abstract: A method is described for modifying a synthetic mesoporous crystalline material by contacting with a treatment composition M'X'Y'n wherein M' is an element of Groups IIA, IIIA, IVA, VA, VIA, VIIIA, IB, IIB, IVB, VB or VIB; X' is halide, hydride, al~oxide of C1-6, or acetate; Y' is X or phosphine, sulfide, carbonyl or cyano; and n = 1-5. The contacted crystalline material becomes functionalized and the functionalized material can be used as a sorbent or a catalyst component.
Patent CA-2071916-A1 (CA)
Title: Electric toothbrush with rotary bristle supporting structure
Inventor: KRESSNER GERHARD
IPC: A61C17/22
Filed: 1990-09-05
Abstract: Abstract of the Disclosure The invention is directed to a toothbrush caused to rotate  by  electrical  means,  having  a  rotary  bristle supporting structure (38) in which the bristle supporting structure (38) is arranged at an angle with respect to a longitudinal center line (52)  of a brush section  (24).          The bristle  supporting  structure  (38)  is  driven  by  a bevel gear train (42), such that the drive shaft (34, 75) of the bristle supporting structure (38) acts as an axial securing means for the bristle supporting structure (38).          In addition,  the  torque  is  introduced  in  the  bristle supporting structure (38) in a manner such as to ensure safe meshing of the teeth of the bevel gear train (42) even in the presence of a certain amount of wear.     (FIG. 2) 20 Sep 90/BH.