baber/WOPTO huggingface dataset:
Patent CA-2003046-A1 (CA)
Inventor: BAIG MIRZA A
IPC: B32B13/10
Filed: 1989-11-15
Abstract: An improved composite material is produced by mixing gypsum and host particles of a stronger substance, such as wood fibers, in a dilute slurry; heating the slurry, under pressure, to convert the gypsum to calcium sulfate alpha hemihydrate; and substantially dewatering the hot slurry before rehydrating the hemihydrate back to gypsum.  The resulting material is a homogoneous mass comprising gypsum crystals physically interlocked with the discrete host particles.     According to a further aspect of the invention, an improved wallboard, having fire resistance, dimensional stability and excellent strength properties, is produced by compressing the composite mass before hydrating it to a final set.
Patent CA-2003065-A1 (CA)
Title: Video and/or audio cassette assembly
Inventor: LAM PHILIP Y T
IPC: G11B33/04
Filed: 1989-11-15
Abstract: ABSTRACT                 A VIDEO AND/OR AUDIO CASSETTE ASSEMBLY   A video and/or audio cassette assembly of the invention includes a rotatable recording disc (1) for recording and/or playback of visual and/or audio information, and a container (2, 3, 13, 15, 29, 30) for housing and protecting said disc (1) against damage or dust. The container is provided with apertures (4, 4a, 18,18a) for affording access to a recording surface of the disc (1) for at least one write/read head of a recording and/or playback unit, and with apertures (5, 19) for affording access to the disc for drive means of a recording and/or playback unit for rotating the disc (1). Projections/plugs (35, 36, 37) are provided for sealing the apertures (4, 4a, 18,18a, 5,19) when the container is closed.
Patent CA-2003114-A1 (CA)
Title: Method for the combustion of liquid or gaseous fuels, device for carrying out this method and heating installation with such a device as well as an air-conditioning system with such a heating installation
Inventor: BASTEN GERT
IPC: F24F6/12
Filed: 1989-11-16
Abstract: Abstract With the  constantly  varying  atmospheric  conditions, in  order  nevertheless  to  achieve  constantly  a perfect, near stoichiometric  combustion  with  extremely  low  power consumption   and virtually  without  noise,  one  supplies solely the instantaneous quantity of air,  which  is  abso-lutely  necessary  for combustion, depending on the quantity of fuel supplied, regulated in an  exactly  metered  manner, to  the  atomization  region  of an ultrasound fuel atomizer (10).  The air supplied in this way is  mixed  in  the  fuel outlet  region  of  the  fuel  atomizer  (10)  with the fuel atomized in this  way  and  this  mixture  is  burnt  in  an adjoining combustion chamber. (Figure 1).
Patent CA-2004211-A1 (CA)
Title: Piperidine derivatives and hyportensives containing the same
Inventor: SYOJI MASATAKA
IPC: C07D471/00
Filed: 1989-11-29
Abstract: ABSTRACT OF THE DISCLOSURE          Piperidine derivatives of formula (I):                       (I) wherein R1,  R2, R3 and R4 may be same or different and   each   represents   a  hydrogen   atom  or   a substituent; X represents an aralkyl or aryl group having from 6 to 30 carbon atoms or an alkyl group having  from  4  to  30  carbon  atoms,   which  may optionally have substituent(s),  and a part of  the organic group may be substituted by hetero atom(s) or hetero  atom-containing  organic  group(s),   and the alkyl  moiety  of  the  organic  group  may  optionally contain unsaturated bond(s); Y  represents  a  hetero atom or an optionally substituted alkylene chain, and the  alkylene  chain  may  optionally  contain  hetero atom(s) or unsaturated bond(s); and A represents  a condensed hetero cyclic  ring which may optionally have substituent(s);  provided that the aromatic ring constituting X or A is an organic group selected from benzene,  naphthalene,  anthracene,  pyrrole,  furan, thiophene,   indole, benzofuran,   benzothiophene, pyridine,   quinoline,   isoquinoline,   quinolidine, acridine,   phenanthridine,   pyrazole,   imidazole, isoxazole,     oxazole,     thiazole,    isothiazole, pyridazine,  pyrazine,  purine,  p,uteridine, triazine and  benzotriazole.   Hypotensives containing  these derivatives  and  use  thereof  for the  treatment  of hypertension  in  human  beings  and  animals.     The preparation of these derivatives is also described.
Patent CA-2004297-A1 (CA)
Title: Polyorganosiloxane fine particles
Inventor: KIMURA HIROSHI
IPC: C08J3/16
Filed: 1989-11-30
Abstract: ABSTRACT OF THE DISCLOSURE    Polyorganosiloxane  fine  particles  represented  by  the averabe composition formula, RaSiOb wherein R represents a substituted or unsubstituted monovalent hydrocarbon group, and a and b are numbers defined by the formulae 1<a?1.7, 1<b<1.5 and a+2b=4, the fine particles having an average particle diameter of from 0.01 to 100 µm, and each fine particle being in a spherical form.
Patent CA-2004667-A1 (CA)
Title: Sulfonylaminoazines, processes for their preparation, and their use as herbicides
Inventor: GESING ERNST R
IPC: A01N43/54
Filed: 1989-12-05
Abstract: ABSTRACT          Herbicidal sulphonylaminoazines of the formula                         (I) in which R1   represents halogen, cyano, nitro, C1-C2-alkyl, C1-C2-halogenoalkyl, C1-C2-alkoxy, C1-C2-halogenoalkoxy, C1-C2-alkylthio, C1-C2-halogenoalkylthio, C1-C2-alkyl-sulphinyl, C1-C2-halogenoalkylsulphinyl, C1-C2-alkyl-sulphonyl, C1-C2-halogenoalkylsulphonyl, C1-C2-alkoxy-C1-C2-alkoxy, di-(C1-C2-alkylamino)-sulphonyl, N-(C1-C2-alkoxy)-N-(C1-C2-alkyl)-aminosulphonyl  or  C1-C2-alkoxy-carbonyl, R2 and R3  independently   of   one   another   represent hydrogen, halogen, alkyl or halogenoalkyl, n    represents the numbers 0 or 1, X    represents hydrogen, C1-C2-alkyl, C1-C2-halogeno-alkyl, C1-C2-alkoxy-C1-C2-alkyl, cyclopropyl, C1-C2-alkoxy, C1-C2-halogenoalkoxy, C1-C2-alkoxy-C1-C2-alkoxy, C1-C2-alkylthio, C1-C2-alkylamino or di-(C1-C2-alkyl)-amino, Y    represents halogen, C1-C2-alkyl, C1-C2-halogeno-alkyl, cyclopropyl, C2-C2-alkoxy, C1-C2-halogenoalkoxy or C1-C2-alkylthio and Z    represents nitrogen or a CH group, and salts thereof.
Patent CA-2005240-A1 (CA)
Title: Decolorization of alkanesulfonic and arenesulfonic acids
Inventor: WHEATON GREGORY A
IPC: C07C309/28
Filed: 1989-12-12
Abstract: DECOLORIZATION OF ALKANESULFONIC      AND ARENESULFONIC ACIDS                ABSTRACT OF THE DISCLOSURE         A method for decolorizing color contam-inated alkanesulfonic or arenesulfonic acids represented by Formula I:   comprises mixing the color contaminated acid with an effective amount of a dialkanesulfonyl or diarenesulfonyl peroxide represented by Formula II:   and allowing the mixture to stand at a temperature and for a period of time sufficient to allow the color of the acid to decrease to the desired level, wherein R in Formula I and R1 in Formula II may each represent an alkyl radical or an aryl radical, with the proviso that R in Formula I may be the same as or different from R1 in Formula II.
Patent CA-2005285-A1 (CA)
Title: Polymeric compositions and method for preparing them
Inventor: CUSTRO SERGIO
IPC: C08F4/48
Filed: 1989-12-12
Abstract: 1.     "POLYMERIC COMPOSITIONS AND METHOD FOR PREPARING THEM"                        Abstract New polymeric compositions comprising: (a) a  linear  copolymer constituted by four  alternating blocks, which can be represented by the formula (I) or (II) B1-T-A1-B2-A2                         (I) or B1 A1-B2-T-A2                        (II) wherein: B1 and B2 are    polydienic    blocks,     preferably polybutadienic blocks; A1 and A2 are polyvinylaromatic blocks and preferably polystyrenic blocks; T         is a portion of random copolymer formed  by dienic and vinylaromatic monomer units; (b) a  linear copolymer constituted by two blocks,  which can be represented by the formulae (III) or (IV) B3-T-A3                                          (III) or B3-A3       (IV) wherein: B3      is a polydienic block; A3      is a polyvinylaromatic block;   2. and T         has the above seen meaning.  The polymeric composition, which can be blended with polystyrene,   can  be  obtained  both  by  blending  the individual components, and by means of novel and original synthesis  processes which make it possible both (A)  and (B) components to be obtained simultaneously.     The polymeric compositions according to the  instant invention  are  suitable for all of those uses  in  which characteristics  of  impact  strength,  transparence  and processability are required.
Patent CA-2005369-A1 (CA)
Inventor: JAYAWANT MADHUSUDAN D
IPC: D21C1/04
Filed: 1989-12-13
Abstract: TITLE PROCESS FOR THE OXYGEN DELIGNIFICATION          OF CELLULOSE PULP            Abstract of the Disclosure Treatment of the pulp with sufficient nitrosating agent to provide 0.1 to 1.2 weight percent active NO(+) on a dry pulp basis at a pH of 1.7 to 4 and in oxygen environment under high intensity mixing conditions before an alkaline oxidative stage in a bleach sequence, the nitrosating agent being a compound that contributes predominantly nitrosonium ions.
Patent CA-2006329-A1 (CA)
Inventor: WATANABE KOZO
IPC: G21F1/10
Filed: 1989-12-21
Abstract: A slide fastener chain excelling in flexibility and ability to intercept electromagnetic waves is produced by coating a fastener tape made of synthetic fibers or natural fibers with an electroconductive metal or alloy by electroless plating and subsequently planting electroconductive fastener elements on the fastener tape.  This slide fastener chain can be used advantageously in parts for connecting shielding means adapted to intercept electromagnetic waves.
Patent CA-2006610-A1 (CA)
Inventor: NAKAMURA TOSHIO
IPC: F04D29/40
Filed: 1989-12-22
Abstract: A fluid pump structural member, such as a casing, which the fluid contacts as it enters the pump, is made of a ring-opened polymer of a norbornene-type monomer containing an effective amount of an elastomer, the structural member has heat distortion temperature of over 120 DEG C, elongation at break of 15 to 80%, and flexural modulus of elasticity of 170 kg/mm<2> or above.
Patent CA-2008371-A1 (CA)
Title: Method and device for producing dispersion-hardened shaped metal parts
Inventor: NILMEN FEHMI
IPC: C22C32/00
Filed: 1990-01-23
Abstract: ABSTRACT     Method  and  Device  for  Producing  Dispersion-hardened  Shaped Metal Parts Method  and  device  for  producing  dispersion-hardened  shaped metal,  e.g.  copper  parts,  wherein a copper melt  is produced that is superheated by a maximum 300°C, which melt is super-saturated with boron and one or several boride-forming elements of the groups IVA,  VA and VIA in the periodic system and/or aluminium  in  such  a  way  that  a  homogeneous,  largely stable boride dispersion  forms  abruptly  in the  supersaturated melt, and wherein a given quantity of this boride-containing copper melt is either directly prepared in the female die or metered into it and, immediately after having been prepared or metered in,  shaped  by  means  of  a  male  die,  preferably  applying compacting pressure, and caused to solidify before the finished or  near-net-shape  copper  part  is removed.   The  method  is efficient  and  flexible,  and  it  is  possible  to  produce high-quality parts in simple devices that are easy to automate, making optimum use of the material.
Patent CA-2010876-A1 (CA)
IPC: G01R31/02
Filed: 1990-02-23
Abstract: ABSTRACT           A system for monitoring a grounding system is permanently  installed  in,  for  example,  a  telephone switching office.   The system operates to scan a large number of ground conductors at the master ground bar by using amplified Hall-effect sensors to monitor AC and DC current on the conductors.  If a surge enters the telephone switching office, the surge is coupled to ground.   The system monitors these ground conductors to insure that the ground system is operating properly.  The microprocessor continuously insures that readings are taken of the current on each of the ground conductors.   The microprocessor compares the current readings with preset parameters.  If a reading exceeds the predetermined parameter threshold, an alarm report is generated.  The report lists not only the current on the conductor which was the source of the surge, but also shows any current increase on the other ground conductors that are monitored.  Thus, if the surge comes in on one of the ground conductors and goes out on other ground  conductors  and  into  the  office  equipment,  the present system will indicate such and generate an alarm report to permit detection and correction of any problems.
Patent CA-2010917-A1 (CA)
Inventor: FORRESTAL JOSEPH M
IPC: A01K97/01
Filed: 1990-02-26
Abstract: ICE FISHING APPARATUS AND SIGNALING DEVICE    Abstract of the Disclosure An ice fishing apparatus and signaling device (10) includes a base (12), a fishing line (22) depending from the base (12) and having a hook (36) on its end, a trigger (38), a transmitter (60), and a receiver (62).  An arm (92) is spring mounted to the base (12) such that it is movable from a trigger held horizontal position to a vertical position.  The arm (42) moves from the horizontal position to the vertical upon a fish strike, thus engaging a switch (64) that completes a circuit that produces a radio signal from the transmitter (60) to the receiver (62).
Patent CA-2012791-A1 (CA)
Title: Spray gel base and spray gel preparation
Inventor: KAMISHITA TAKUZO
IPC: A61K9/12
Filed: 1990-03-22
Abstract: The present invention is directed to a spray gel base having an excellent spread-stick property, which is prepared by thickening a 0.2 - 1.5 % by weight aqueous solution of carboxyvinyl polymer with a water-soluble basic substance, followed by adjusting the viscosity thereof with a viscosity adjustor within the range of 500 - 5,000 centipoise so that the particle size distribution of spray after spraying is over 80 % in the area of 20 - 100 µm and to a spray gel preparation having an excellent spread-stick property, which is prepared by mixing an active medicament with said spray gel base.
Patent CA-2012981-A1 (CA)
Title: Removal of arsenic, tin and antimony from crude lead containing silver
Inventor: BURANY PETER
IPC: C22B13/06
Filed: 1990-03-23
Abstract: A process and device for the removal of arsenic, tin and antimony from crude lead by industrial oxygen is disclosed in which the oxygen is introduced into a turbulent fluid stream of lead restricted in a limited volume. The oxygen containing fluid stream passes into a larger volume in which the compounds which are to be separated float on the surface in the form of oxides and run off from the surface.  The device includes two cylinders of different volume and one within the other.  The cylinders are immersed at different depths in molten lead in the smelting crucible, a stream of fluid lead is introduced in the smaller cylinder by a lead pump and oxygen is introduced into this fluid lead stream.
Patent CA-2013436-A1 (CA)
Title: Insect repellant clothing bag
Inventor: WOLFERT BARBARA
IPC: A01N25/34
Filed: 1990-03-29
Abstract: ABSTRACT OF THE DISCLOSURE    A bag article for the containment and treatment of garments and the like includes a fumigant source element within the bag, which element is activated by exposure of an internal surface to the atmosphere so as to evolve a gaseous treatment agent.  The fumigant source element may be provided by a laminar pad, and activation may be achieved by parting of the panels of the bag, such as by the introduction of the garment to be contained therewithin.
Patent CA-2013541-A1 (CA)
Title: System for detecting voltage pulses of a particular magnitude
Inventor: COLLES JOSEPH H
IPC: G01R19/165
Filed: 1990-03-30
Abstract: SYSTEM FOR DETECTING VOLTAGE                PULSES OF A PARTICULAR MAGNITUDE                  Abstract of the Disclosure First circuitry on an integrated circuit chip has an input terminal, preferably the only input terminal, for receiving a voltage pulse introduced to a first terminal on the chip.  The first circuitry damps the negative voltage peaks of the voltage pulse at a voltage of a first magnitude inherent in the construction of the first circuitry.  A pair of input transistors in the first circuitry have dimensions to provide, at the input terminal to second circuitry, a clamping voltage of a first magnitude at a certain fraction of the power supply voltage.  The first circuitry may include a closed loop servo amplifier which regulates the negative peaks of the pulse at the input terminal to the second circuitry to a value approximately equal to the voltage of the first magnitude.  The second circuitry compares the negative peaks of the input voltage pulse with a voltage of a second magnitude inherent in the construction of the second circuitry to provide an output logic pulse.  A pair of input transistors in the second circuitry have dimensions to provide an internal reference voltage of the second magnitude.  Differences between the dimensions of the input transistors in the second circuitry and the first circuitry provide a slight but accurate difference between the voltages of second and first magnitudes.  The output pulse may constitute a horizontal sync pulse having amplitude not slightly more negative than the negative peaks of a color burst following it.  This pulse provides for a faithful reproduction of color from color information signals following the color burst signals.            * * * * * * * * *
Patent CA-2014115-A1 (CA)
Title: Compaction of aluminum beverage cans
Inventor: PHILLIPS WILSON C
IPC: B30B9/32
Filed: 1990-04-06
Abstract: COMPACTION OF ALUMINUM BEVERAGE CANS     ABSTRACT OF THE DISCLOSURE         A simple household type can crusher to be used on aluminum beverage cans  causes a crushing action in which the ends of the can are rotated so that they lie flat on an upper surface of the crushed can with the peripheral wall of the can remaining in tact on one side of the crushed can for inspection of the printed material so that the origin of the can can be determined.  The can crusher includes a pair of handles which, when rotated to the vertical position brings two rods into contact with the upper surface of the can while it lies horizontal thereby creasing the can and causing the ends of the can to rotate towards the creased portion.  When the handles are rotated to the horizontal position this brings two paddles into contact with the partially rotated ends of the can and, with minimal pressure on the handles, the can is compressed into a readily salvagable shape of  four inches by six inches.  The handles are then rotated to the original clear position which allows easy removal of the compacted can.
Patent CA-2015426-A1 (CA)
Title: Image reading apparatus
IPC: H04N1/407
Filed: 1990-04-25
Abstract: ABSTRACT OF THE DISCLOSURE         An image reading apparatus in which automatic gain control  is  performed  comprises  a  integral reading  unit, integrated with an optical system having a light source for irradiating an original, a rod lens array for focusing an image, and a line image sensor for reading the image, and a white reference plate, as a reference image upon reading of the image, being attached on one end of reading unit so as to move together therewith.  There is effect in that one and the same portion of the white reference plate is read by the line image sensor so that the gain control can be made on the basis of the output of the line image sensor.  Further even if a part of the white reference plate becomes dirty, an even output can be obtained throughout the whole surface of the original to thereby make it possible to prevent deterioration,  such as generation of transversal stripes, from occurring in the output picture.
Patent CA-2016310-A1 (CA)
Title: Method of treating waste water
Inventor: STEWART ALFRED JR
IPC: C02F1/52
Filed: 1990-05-08
Abstract: "METHOD OF TREATING WASTE WATER"               Abstract of the Disclosure A  method for treating industrial waste water prior to its discharge into the city or county sewer system is provided.  The method includes introducing into the waste water and iron-containing compound, a hydroxide and a flocculating agent.  This method results in the formation of a sludge cake layer on top of the waste water.  The sludge cake is then removed, and the treated waste water is discharged into the sewer system.
Patent CA-2020403-A1 (CA)
Title: Polymer base blend compositions containing destructurized starch
Inventor: SILBIGER JAKOB
IPC: C08L25/04
Filed: 1990-07-04
Abstract: WARNER-LAMBERT COMPANY Morris Plains, USA         Polymer base blend compositions containing destructurized starch Abstract A composition of matter capable of being formed into articles having substantial dimensional stability comprising a) destructurized starch, and b) at least one compound selected from the group consisting of cationically modified polysaccharides; said modified polysaccharide being present in an amount effective to enhance the physical properties of said articles.
Patent CA-2020795-A1 (CA)
Inventor: MOURGUES ERIC
IPC: G01H3/04
Filed: 1990-07-10
Abstract: Appareil de détection et de signalisation des cutes des corps dans l'eau Signalisation des corps au moment de leur immersion dans l'eau. Un capteur composé d'une membrane 2 et d'une cellule piézo-électrique relié à un circuit d'amplification et de gestion du signal est contenu dans un boitier 1. L'élimination des effets produits par les fréquences perturbatrices s'effectue par l'amortissement de ces fréquences lors de la transmission des vibrations de la membrane 2 à la plaque 4 de l'élément piézo-élec-trique par interposition entre la membrane et la plaque d'un pont élastomère 11, dont les caractéristiques sont choisies en fonction de la bande passante désirée. Les bords de la plaque 4 étant solidement insérés dans le corps du boitier 1 et la membrane 2 faisant corps avec le boitier,ce dernier constitue un pont acoustique transmettant à l'ensemble des parties du capteur des vibrations reçues de sources extérieures autres que l'eau, de sorte que la membrane 2 se trouve en équilibre statique ne transmettant aucune déformation à élément piézo-électrique. Atténuation ou élimination des fréquences non représentatives des chutes dans l'eau.
Patent CA-2020878-A1 (CA)
Inventor: OHKUMA HIROAKI
IPC: A61P31/04
Filed: 1990-07-11
Abstract: The present invention relates to the antitumor antibiotic compound BU-3285T and its preparation.  The compound is obtained by culturing a new strain of Chainia rosea and demonstrates both antitumor and antifungal activity.   It also relates to the desulfated derivative of BU-3285T which is obtained by treatment of BU-3285T with sulfatase enzyme.  BU-3285T desulfate possesses antitumor activity.
Patent CA-2020903-A1 (CA)
IPC: F02D31/00
Filed: 1990-07-11
Abstract: ABSTRACT OF THE DISCLOSURE        An engine revolution control apparatus for a vehicle, in which revolutions of an engine when the engine is in the idling state, that is, when the vehicle is being stopped and a throttle valve is totally enclosed, is controlled by con-trolling opening of an air control valve which is provided in a by-pass conduit for by-passing the throttle valve ac-cording to the revolution feedback correction volume which was calculated according to the deviation between the-actual revolutions of the engine and its target revolutions which was set according to the load of the engine, increasing, in the non-idling state of the engine, the revolution feedback correction volume, which is calculated when the engine has shifted from the idling state to the non-idling state as well as when the deviation between the actual revolutions and the target revolutions is small, so that, when the engine is shifted to the idling state again, it is not li-able to be affected by such an undetected current consumer as an ON signal of a headlight which was injected when the engine was in the non-idling state and the actual revolu-tions can smoothly be converged on the target revolutions with better responsibility.