baber/WOPTO huggingface dataset:
Patent CA-2061969-A1 (CA)
Title: Digital recording medium
Inventor: UTSUMI SHIGEO
IPC: G11B5/66
Filed: 1992-02-27
Abstract: ABSTRACT OF THE DISCLOSURE       A digital recording medium having a non-magnetic support made of a polyethylene naphthalate film which is prepared by stretching the film in a longitudinal direction, coating the film with a coating liquid containing a lubri-cant before stretching in a transverse direction, stretching the coated film in a transverse direction and heat setting the film without restretching in a longitudinal direction and which has at least 800 kg/mm2 of a Young's modulus in the longitudinal direction of the film at least 700 kg/mm2 of a Young's modulus in the transverse direction of the film; 0.008 µm or less of a center line average roughness on the smooth surface of the film; and the number of protru-sions having a height of at least 0.27 µm on the smooth surface of the film which is measured by a multiple inter-ference method, the recording medium having good electro-magnetic conversion properties, running durability and being suitable for long-time recording.
Patent CA-2062494-A1 (CA)
Title: Impedance matching variable output audio frequency coupler
Inventor: RUSSELL GAYLORD C
IPC: H03H7/38
Filed: 1992-03-09
Abstract: AN IMPEDANCE MATCHING VARIABLE            DKT NO. RD011-OHMS OUTPUT AUDIO FREQUENCY COUPLER                         ABSTRACT OF THE DISCLOSURE   A coupling device is used to perform an impedance matching or low impedance limiting function for multi-speaker systems. Particularly disclosed is a relatively simple and easily installed coupling device for coupling the audio frequency output of an audio frequency amplifier having an output impedance and a maximum output power capacity to the input of at least one audio frequency transducer having an input impedance and an input power handling capacity. The coupling device comprising: a magnetic core having characteristics appropriate for use at audio frequencies; a winding of insulated wire in magnetic flux communication with the core and having a first end and an second end. The winding has a number of turns N which number of turns is dependent upon the core characteristics, the maximum output power capacity and the output impedance of the amplifier. Each turn is electrically insulated from the others. There is also a plurality of taps each tap having one end in electrical contact with a turn of the winding and each tap having a tap output end. The plurality of taps has at least a first tap and a last tap. The first tap one end being a first predetermined number of turns n1 from the second end of the winding and the last tap one end being a last predetermined number of turns nB from the second end of the winding. Also there is an impedance limiter winding portion of the winding. The impedance limiter winding has a limiter number of turns defined by the difference between the number of turns N and the first predetermined number of turns n1. In operation, the winding first and second ends are in electrical audio frequency connection with the audio output terminals of the amplifier and the transducer/speaker is in electrical audio frequency connection with a preselected tap output end and the winding second end. Preferably there is a switch which is used to connect the speaker to any one of typically 10 taps where the output levels go from a maximum level to zero level and may typically decrease from one tap to the next tap in 2 db increments.
Patent CA-2062759-A1 (CA)
Inventor: FAIRBANKS JOHN P
IPC: G02F1/133
Filed: 1990-06-29
Abstract: A structure and method for controlling a liquid crystal display takes advantage of the sharp reflectance change over a small voltage change for new liquid crystal display materials, applying ON and OFF pixel voltages very close to the transition voltage of the liquid crystal material and regulating the applied voltage to remain reliably near and on the desired side of this transition voltage. Also, a net zero DC voltage across pixels of the crystal is maintained using a switching mode close to half the frequency of prior art modes. Driving voltages are provided by a switching regulator rather than the prior art voltage divider, resulting in a significant reduction in operating power. The preferred switching regulator generates only three additional voltages for driving rows and columns of the display, in contrast to the five generated voltages of the prior art voltage divider. An on/off voltage regulator alternately provides or does not provide power to a primary coil (P81), thereby controlling voltage across capacitors (C81, C82, C83, C84) associated with secondary coils (S81, S82, S83, S84). This gives accurate voltage control over a wide range of display loads. This voltage regulator is controlled preferably by the low voltage applied across pixels during the time when the pixels are not in the selected row, that is, during the time when the logic state of a pixel is not provided to the pixel.
Patent CA-2064211-A1 (CA)
Title: Doctor blade supporting structure
Inventor: AIKAWA YOSHIHIKO
IPC: D21G3/00
Filed: 1990-05-15
Abstract: A doctor blade supporting structure for paper making rolls, which is provided with a reinforcing plate  laminated on a blade holder , and a finely adjusting screw  for use in regulating the blade holder via the free edge , which is on the side of the blade , of the reinforcing plate  so that the blade holder can be moved to engage and disengage from the blade .   This structure enables a proper posture of the blade  to be retained, and the blade in use to be engaged with the mat-ing roll surface with a uniform and constant contact pressure dis-tribution at all times.  Moreover, the contact pressure of the blade can be distributed uniformly in the axial direction of the roll surface.
Patent CA-2066556-A1 (CA)
Title: Alkaline protease, method for producing the same, use thereof and microorganism producing the same
Inventor: SAWAYANAGI TOYOJI
IPC: C12N9/54
Filed: 1992-04-21
Abstract: ABSTRACT       An alkaline protease, method for producing the same and detergents containing the protease as an aid, the alkaline protease obtained by cultivating in a medium a microorganism SD523 FERM BP-3774 and having an ability of producing the alkaline protease, or artificial mutants or genetically engineered variants thereof, the microorganism having (1) an optimum pH of from about 11 to 11.5 as measured after reaction at 30°C for 10 minutes using casein as a substrate and an optimum temperature of about 60°C as measured after reaction at pH 10 using casein as a substrate; (2) a half inactivation temperature of about 55°C as measured after reaction at pH 10 for 10 minutes; and (3) a molecular weight of 29,000 ? 2,000 as measured by SDS polyacrylamide gel electrophoresis.  The enzyme has an improved storage stability in liquid detergents as compared with known alkaline proteases produced by known microorganisms belonging to the genus Bacillus firmus.
Patent CA-2068551-A1 (CA)
Title: Abrasive brush
Inventor: MORII AKIRA
IPC: A46D1/00
Filed: 1992-05-13
Abstract: ABSTRACT OF THE DISCLOSURE   An abrasive brush comprising at least one stick consisting of long inorganic fibers each having a diameter of 3 µm to 30 µm which are aligned and bonded with a resin, and said stick having a cross sectional area of 0.002 mm2 to 2.5 mm2, which can abrase a curved or intricate surface of a material to be abrased and has a large abrasion ability, large mechanical strength and consumption resistance.
Patent CA-2069676-A1 (CA)
Title: Assay of specific antibody
Inventor: XU JING-ZHI
IPC: G01N33/543
Filed: 1992-05-27
Abstract: ABSTRACT      Disclosed herein is an assay of a specific antibody to an antigen in a particular immunoglobulin class and/or subclass by an immunoassay wherein an immunological agglutination making use of antigen-sensitized insoluble carrier particles and a second antibody specific to the particular immunoglobulin class and/or subclass is used.  A trivalent or higher polyvalent antibody specific to the particular immunoglobulin class and/or subclass is used as the second antibody.
Patent CA-2069946-A1 (CA)
Title: Reactif et biocapteur pour mediateur redox
Inventor: POLLMANN KLAUS H
IPC: G01N27/327
Filed: 1990-12-14
Abstract: Capteur biologique ampérométrique permettant de détecter la concentration d'un analyte dans un échantillon de fluide. Le capteur biologique (1) comporte une électrode de travail (4) et une contre-électrode (5) fixées à un matériau isolant (7). On place un réactif (11) du capteur biologique dans un puits (9) de manière qu'il couvre sensiblement toutes les surfaces exposées (10) des électrodes (4, 5). Afin d'effectuer la mesure de concentration, on ajoute un échantillon contenant l'analyte au puits de réactif (9), on attend la fin de la réaction, on applique une différence de potentiel aux électrodes (4, 5) et on mesure le courant limité par diffusion.
Patent CA-2071944-A1 (CA)
Inventor: SUE JIINJEN A
IPC: C23G1/19
Filed: 1991-10-18
Abstract: Solution de dépouillage aqueuse et méthode pour enlever sélectivement un composé de titane d'un métal de base. La solution aqueuse contient une source de peroxyde d'hydrogène, une source d'ions hydroxyle qui est un hydroxyde alcalin et un acide, les constituants étant présents à une concentration telle que le pH de la solution est supérieur à 8.
Patent CA-2074569-A1 (CA)
Inventor: LE SERGENT CHRISTIAN
IPC: C03B37/018
Filed: 1992-07-23
Abstract: : Procédé de fabrication de fibres optiques actives L'invention concerne un procédé de fabrication de fibres optiques actives comprenant la préparation d'une préforme puis le tirage de fibre à partir de la préforme, caractérisé en ce qu'il consiste à partir d'une préforme ayant une zone extérieure périphérique dopée, cette zone étant destinée à constituer la gaine externe de la fibre optique, le dopage de la zone périphérique lui contrant un indice de réfraction supérieur à celui de la gaine optique et, par rapport au coeur de la fibre optique, une différence de température de ramollissement inférieure à celle qui existerait si la zone extérieure n'était pas dopée. FIGURE A PUBLIER : NEANT
Patent CA-2075496-A1 (CA)
Title: Hydrazine derivatives
Inventor: HART TERANCE WILLIAM
IPC: C07D215/12
Filed: 1991-02-08
Abstract: ABSTRACT               HYDRAZINE DERIVATIVES       A hydrazine derivative of the formula :                                          (I) wherein A represents an optionally substituted phenyl, naphthyl or heteroaromatic group containing one or two nitrogen atoms, and R1 represents hydrogen, optionally substituted alkyl, or optionally substituted benzyl, phenethyl, or 1-naphthylmethyl, 2-naphthylmethyl, or pyrid-3 ylmethyl group, and salts thereof, possess useful pharmaceutical properties.
Patent CA-2077437-A1 (CA)
Title: Gel stick antiperspirant compositions
Inventor: OH YOUNG S
IPC: A61K8/49
Filed: 1991-03-29
Abstract: Antiperspirant compositions in the form of gel sticks, which provide the user with excellent antiperspirant efficacy while exhibiting good stability, are disclosed. These compositions utilize particular gellling agents which are stable under the acidic conditions required in antiperspirant compositions. Specifically, the compositions have an acidic pH and include an antiperspirant active, a solvent for the antiperspirant active, and a gelling agent which comprises dibenzylidene alditols substituted on the benzene ring with an electron withdrawing group. Examples of preferred gelling agents include di(meta-fluoro) dibenzylidene sorbitol and di(meta-chloro) dibenzylidene sorbitol. The method of preventing and controlling perspiration wetness using these compositions is also disclosed.
Patent CA-2077815-A1 (CA)
Title: Cooling air transfer apparatus for aircraft gas turbine engine exhaust nozzles
Inventor: MAYER JEFFREY C
IPC: F02K1/82
Filed: 1992-09-09
Abstract: A cooling air transferring apparatus is provided particularly for transferring cooling air from hollow convergent flaps and seals to hollow divergent flaps and seals respectively in aircraft gas turbine engine variable nozzles. The preferred embodiment includes two semi-circular tubes, the first partially received within the second and both having a common center and radius of curvature so as to slide about the pivot point of the variable nozzle's pivotable convergent and divergent flaps and seals. The preferred embodiment further includes an entrainment opening on the second tube through which part of the first tube is received. The entrainment opening induces cooling air from the nozzle bay into the cooling air transfer tube to help cool the divergent flaps and seals.
Patent CA-2083473-A1 (CA)
Inventor: ROSAR EDWARD C
IPC: E21B47/08
Filed: 1992-11-20
Abstract: Evaporite  mineral  solution  mining  process  and  apparatus comprising the steps of undercutting a bed or massive deposit by in-air jetting with an aqueous solution followed by solution mining of the mineral above the undercut with monitoring and control to cease the solution mining when the roof rock is adequately exposed to maintain a stable roof and stable pillar support.   The resulting cavity exhibits steeply angled, nearly vertical sidewalls, flared upwardly and outwardly only 10° to 15° from the vertical plane normal to the edges of the undercut as compared to 45° typical for morning glory cavities.  A first plan vertical production well is drilled with a sump provided substantially adjacent to the floor rock.  A second  horizontal  well  is  developed  up  dip  to  intersect  and communicate with the production well.  The air jet tool mechanism provides horizontal, slightly upwardly inclined jets (0°-15°) which cut the mineral  laterally on both sides of the tool which is gradually withdrawn up dip as the undercut progresses.  The tool also includes an EMR ranging system, preferably a radar system, and a MWD unit to transmit data to the surface.  This permits undercut width control to develop a substantially rectangular undercut profile.  The subsequent  controlled  solution mining  provides  a  substantially rectangular room throughout the entire horizontal  length which provides  improved mineral  recovery,  steeply angled pillar wall profiles and controlled roof span and increased dissolution rate. The method and apparatus is applicable to beds having dips from 0-90° and multiple beds with or without partings.
Patent CA-2083715-A1 (CA)
Title: Process for the preparation of 1,4-bis(4-fluorobenzoyl)-benzene
Inventor: GILB WALTER
IPC: C07B61/00
Filed: 1991-05-18
Abstract: Abstract Process for producing 1,4-bis-(4-fluorbenzoyl)-benzol by reacting terephthaloyl chloride with fluorbenzol in the presence of aluminium chloride or aluminium bromide characterized in that aluminium chloride or aluminium bromide is added in me-tered quantities to a mixture of terephthaloyl chloride and fluorbenzol at temperalures of approximately 25°C to approximately 68°C and the mixture is allowed to react at said temperatures.
Patent CA-2087112-A1 (CA)
Title: Imidazole derivatives having anti-hiv activity
Inventor: SUGIMOTO HIROHIKO
IPC: C07D233/54
Filed: 1993-01-12
Abstract: Abstract of Disclosure A novel imidazole derivatives of formula I:                         I   wherein R1 is hydrogen, alkyl, halogen, or optionally substituted aryl; R2 is alkyl, optionally substituted aryl optionally substituted aralkyl, or optionally substituted hetero ring group; R3 is hydrogen, alkyl, optionally substituted aryl, optionally substituted aralkyl, or optionally substituted hydroxyalkyl; R4 is hydrogen, alkyl, halogen, acyl, optionally substituted hydroxyalkyl, optionally esterified or amidated carboxyl group, hydroxy group, aryl or arylthio; X is S, SO, SO2, CH2, or Se; n is an integer of 1 to 3, or a pharmaceutically acceptable salt thereof, said derivative having anti-HIV activity and being useful for the treatment of HIV infections.
Patent CA-2088365-A1 (CA)
Title: Ash Catcher Assembly for Barbecue Grill
Inventor: SCHLOSSER ERICH J
IPC: A47J37/07
Filed: 1991-08-08
Abstract: An ash catcher assembly (2) for catching ash and debris falling out through openings in the bottom (11) of a barbecue kettle (10) is disclosed. The  assembly  (2)  is  easily  installed  and  is removably mounted on the bottom (11) of a barbecue kettle   (10).     The  assembly   (2)   includes   a cylindrical basket (90) for holding the ash that has an interconnected handle member (80) for gripping. Outwardly  extending  projections  (81,  84)  of  the handle member (80) extend outwardly through openings (94,  93)  in the basket (90)  and cooperate with a cylindrical mounting ring (60).   The mounting ring (60) has a plurality of slots (62, 65) for receiving the  projections  (81,  84).    The  assembly  (2)  is secured to the kettle (10) by a transverse mounting band (51) that is fastened to the bottom (11) of the kettle (10) and connected to the mounting band (60).
Patent CA-2088591-A1 (CA)
Inventor: PANNENBECKER HEINRICH
IPC: C23C2/20
Filed: 1991-07-09
Abstract: The invention relates to a device for blowing off excessive coating material,  especially fluid zinc or aluminium,  in the coating of metal bands. The device comprises a blowing off jet impinged on compressed air,  of which the jet bodies. 3,4 are fixed at a base body 1. The jet lips 3,4 adjustable against each other form a jet slit 10 extending in transverse direction of the metal band.  For optimizing an adaption of the slit thickness respectively the pressure of the blowing off medium along the band width it is provided to build the blowing off jet as a jet row, providing in transverse direction of the band at least two partial jets 2 to impinge seperately on a blowing off medium,  especially compressed  air,  sealed  against  each other  ,  of which the respective partial slits are adjacent forming a continuous jet slit (10).
Patent CA-2090827-A1 (CA)
Inventor: PELTIER FABIENNE LE
IPC: C07C5/32
Filed: 1993-03-02
Abstract: PROCÉDÉ DE DÉSHYDROGÉNATION D'HYDROCARBURES ALIPHATIQUES SATURÉS EN HYDROCARBURES OLÉFINIQUES Invention de Fabienne LE PELTIER, Sylvie ROBERT, Jean-Paul BOITIAUX, Gérard LEGER et Jean-Pierre BURZYNSKI Procédé de déshydrogénation d'une charge comprenant des hydrocarbures aliphatiques saturés comprenant essentiellement de 3 à 5 atomes de carbone par molécule, dans lequel on introduit la charge, préalablement chauffée à la température de réaction, sans prémélange avec de l'hydrogène à l'entrée d'au moins un réacteur dans lequel on effectue la réaction de déshydrogénation en présence d'un catalyseur comprenant de préférence un support comprenant au moins un oxyde d'élément choisi parmi les groupes IIA, IIB, IIIA, IIIB, IVA et IVB de la classification périodique des éléments, au moins un métal noble de la famille du platine, au moins un métal promoteur et au moins un métal alcalin ou alcalino-terreux. Figure à publier
Patent CA-2091766-A1 (CA)
Title: Enhancement of glutathione levels with glutamine
Inventor: WILMORE DOUGLAS W
IPC: A61P31/04
Filed: 1991-09-11
Abstract: A method of maintaining and/or enhancing tissue or plasma levels of glutathione is provided. Treatment of a mammal with a supranormal amount of glutamine, or a glutamine equivalent, prevents thereduction in tissue glutathione levels associated with exposure of the mammal to a compound capable of oxidative injury to the tissue. Such compounds may be drugs such as chemotherapeutic agents.Administration of a supranormal amount of glutamine or a glutamine equivalent after exposure of a mammal to a compound capable of oxidative injury to the tissue can ameliorate or prevent injury. Treatment of a mammal with glutamine or a glutamine equivalent can also reduce or prevent starvation -or radiation- associated oxidative damage in the tis-sues.
Patent CA-2092588-A1 (CA)
Inventor: NEHRA NARENDER S
IPC: A01H4/00
Filed: 1993-03-26
Abstract: 39 Whole scutella are isolated from immature zygotic embryos of cereal plants and cultivated, in the absence of the zygotic embryo axis, to produce somatic embryos, which in turn are converted into plantlets. The scutellar cells optionally are transformed with foreign DNA so that at least some of the resulting plantlets are transgenic or chimeric. The regeneration is much more rapid than with conventional methods.
Patent CA-2092824-A1 (CA)
Title: Integral hydrolysis layer junction
Inventor: BENTON BARRY W
IPC: G01N27/401
Filed: 1991-09-17
Abstract: The present invention includes an ion diffusion junction in an electrochemical cell. The junction includes a polymer matrix that is impermeable to the sample solution. A plurality of inclusions are disposed within the junction matrix and oriented to form continuous hydrolytic pathways extending between the sample solution (34) and the reference electrolyte (18) such that ion diffusion occurs along the hydrolytic pathways.
Patent CA-2093479-A1 (CA)
Inventor: KING JAMES H
IPC: H05B3/84
Filed: 1993-04-06
Abstract: CONTINUOUS DUTY DIRECT CURRENT HEATED WINDSHIELD      WITH AMBIENT TEMPERATURE LIMIT SWITCH                ABSTRACT OF THE DISCLOSURE An electric heating grid extends from the middle of one side of  the windshield,  down that side to the bottom of  the windshield, and from there across the bottom to the opposite side.  The grid is operated by a control circuit having an on-off switch that is accessible to the vehicle operator. The control circuit includes a switch for sensing ambient outdoor temperature so as to allow the grid to be operated only when the outdoor temperature is below a threshold that distinguishes wintertime from non-wintertime condition.
Patent CA-2095275-A1 (CA)
Inventor: BEEMAN RALPH E
IPC: C02F1/58
Filed: 1993-04-30
Abstract: IN SITU BIODEGRADATION OF GROUNDWATER CONTAMINANTS                     ABSTRACT       Regulated  processes  for  biodegrading  halogenated organic compounds in an aqueous subsurface environment through stimulation of bacteria are provided.  The  processes provide an electron donor source to anaerobic dehalogenating bacteria as a  stimulus  for biodegradation of the contaminants.   When necessary to limit the biological formation of vinyl halide monomer,  the  processes  provide  for  a  sulfate  reducing environment  in  the  region  of  biological  activity  by  the addition of an inorganic sulfate.  One embodiment provides for converting the aqueous subsurface environment from anaerobic dehalogenating  conditions to  aerobic  conditions.   Another embodiment  provides  for  converting the  aqueous  subsurface environment  from  anaerobic  dehalogenating  conditions  to anaerobic methanogenic conditions followed by conversion to aerobic  conditions  in  order  to  completely  degrade  the contaminants to carbon dioxide and water.
Patent CA-2096091-A1 (CA)
Inventor: BRAUN RUDOLF
IPC: C08J3/03
Filed: 1993-05-12
Abstract: Aqueous dispersions of organopolysiloxanes useful in the preparation of elastomers comprise (A) an organopolysiloxane containing groups which are capable of condensation, (B) a condensation catalyst, (C) an organopolysiloxane resin having a molecular weight of not more than 20,000, (D) a compound containing basic nitrogen and (E) polyvinyl alcohol. The aqueous dispersions are preferably prepared by dissolving the organopolysiloxane resin (C) in the organopolysiloxane (A) and then emulsifying the solution with polyvinyl alcohol (E) and water.