baber/WOPTO huggingface dataset:
Patent CA-2008640-A1 (CA)
IPC: B22F1/00
Filed: 1990-01-26
Abstract: ABSTRACT OF THE DISCLOSURE          An electronic toothbrush has a handle accommodating a light-emitting diode or a sound-producing device as well as an electric circuit for actuating the diode or device.  When a current is caused to flow through the toothbrush by grasping the brush and bringing it into contact with the teeth, light or sound is emitted to notify the user that the toothbrush is operating.
Patent CA-2012573-A1 (CA)
Inventor: SCHWAB HEINZ
IPC: C08G18/48
Filed: 1990-03-20
Abstract: K-17510/+/CGW 19 Flame-retarded reaction resin compositions Abstract Reaction resin compositions containing as flame-retardant a mixture of a) a hydroxide of a metal of group 2 or 13 of the Periodic Table of Elements, and b) an organophosphorus compound of general formula I                                      (I), wherein X      each independently of the other is oxygen or sulfur, R1     each independently of the other is hydrogen, an alkyl radical having from 1 to 4 carbon atoms or phenyl, R2     each independently of the other is hydrogen or an alkyl radical having from 1 to 4 carbon atoms, or R1 and R2 together with the common carbon atom form a cyclohexylidene or cyclohexenylidene ring, R3 and Rs are each independently hydrogen or an aL~cyl radical having from 1 to 4 carbon atoms, and R4     each independently of the other is hydrogen or methyl, wherein at least one of the substituents R1, R2, R3, R4 and R5 is other than hydrogen, and when R1 and R2 form a ring together with the common carbon atom, R3, R4 and Rs are always hydrogen, are suitable, for example, as sheathing systems for electrical or electronic components.
Patent CA-2012749-A1 (CA)
Inventor: GARDNER MICHAEL S
IPC: A01K11/00
Filed: 1990-03-21
Abstract: The ear tag (2) is provided with a head portion (6) having cutting means (7) for piercing an animal's ear or skin, the neck (4) or head portion is engaged with a driving means when the ear tag is applied to an animal by piercing the animal's ear or skin and whereby the driving means is shielded by the tag from contact with the animal during application. A method of applying such an ear tag to an animal is also provided,
Patent CA-2013059-A1 (CA)
Title: Process for the preparation of 2-cyano-3, 3-diarylacrylates
Inventor: SPANG PETER
IPC: C07C253/30
Filed: 1990-03-26
Abstract: Process for the preparation of 2-cyano-3.3-diarylacrylates Abstract of the disclosure:    The preparation of 2-cyano-3,3-diarylacrylates I                        (I), (in which Ar1 and Ar2 are aromatic radicals and R is an aliphatic radical having from 3 to 30 carbon atoms) by reacting a 2-cyano-3,3-diarylacrylate II                          (II), (in which R1 is methyl or ethyl) with an alcohol III                           R-OH                    (III) in the presence of a basic catalyst with removal of the alcohol R1-OH formed.   The esters of formula I are valuable UV absorbing agents for, say, plastics materials.
Patent CA-2013778-A1 (CA)
Title: Meter shield
Inventor: TOLLMANN JOHN A
IPC: E04H9/00
Filed: 1990-04-04
Abstract: - An Abstract -This is a fourteen (14) gauge metal Meter Shield with two (2) 1 "  X  1 "  X  1/8 "  X 48 "  long legs with tapered points to penetrate the grade surface.  It is positioned over the gas meter and it is pushed or driven  into the ground to secure it at three (3) inches above the height of the gas meter.  When installed it protects the gas meter from the elements of rain, ice and snow, etc., thus eliminating a build-up in the vent shield of the gas meter -
Patent CA-2014163-A1 (CA)
Title: Optical recording and reproducing apparatus
IPC: G11B7/1372
Filed: 1990-04-09
Abstract: An optical recording and reproducing apparatus for optically recording and reproducing information on and from a disk comprises: a light source for generating a parallel beam; a movable optical system adapted to condense the parallel beam from the light source on the disk, to split the beam reflected by the disk into a first and a second beam, to spatially invert the second beam, and to move in the radial direction of the disk; a first split-beam detecting device having two light receiving surfaces which respectively receive the first beam; a second split-beam detecting device having two light receiving surfaces which respectively receive the second beam inverted in the movable optical system; and a control device adapted to effect tracking control by moving the movable optical system in the radial direction of the disk in accordance with respective detection signals output from the first and second split-beam detecting devices.
Patent CA-2015409-A1 (CA)
Title: Continuously-operating press having resiliently mounted guided rollers for supporting pressing bands
Inventor: BIELFELDT FRIEDRICH B
IPC: B27N3/24
Filed: 1990-04-25
Abstract: A continuously-operating press suitable for producing chipboard, fibreboard, plywood sheets or similar products. The press consists of endless metal bands serving to transmit pressing force to and to pull material to be pressed through said press.  The metal bands are guided over drive rollers and guide rollers around a press bed or upper press block.  The bands are supported on rolling rods whose axes run transversely to the travel direction of the bands positioned between the press bed or upper press block and the metal bands.  The rolling rods are attached at their extremities via resilient centering pins extending into bores in guide bushings in links of a guide chain and into bores in the rolling rods, in such a way as to be capable of sliding axially inside the bores.  The rolling rods and guide chains are mechanically guided through the same arc by entry-side feed sprockets.  The centering pins are provided with conical bearing bushings on their circumferences arranged centrally with respect to the longitudinal medial axis of the guide chain.  The guide pins are provided, at their outer extremities with rectangular collets to prevent the centering pins from rotating.  The bores of the guide bushings of the chain links are somewhat larger than the bores of the rolling rods to allow the centering pins to be removed and replaced without dismantling the press.
Patent CA-2016370-A1 (CA)
Inventor: UNGER MICHAEL
IPC: B29B15/12
Filed: 1990-05-09
Abstract: The invention is concerned with a method and apparatus for impregnating fibre bundles by means of molten or liquid resin (32) in the course of manufacturing fibre-reinforced material (which material comprises one or more fibre bundles in which each fibre is surrounded by matrix resin) by impregnating a continuous web (10, 10a) of one or more fibre bundles with a molten or liquid resin (32) and solidifying the resin (32) by cooling or chemical reaction. Before impregnation, the molten or liquid resin material (32) is subjected to shear forces by forcing it to flow through a channel (31) communicating with an impregnation point (34, 37), the channel containing at least one part having decreasing cross-section and/or said channel having a cross-section sufficiently narrow to cause shear forces in the molten or liquid resin material (32) to decrease its viscosity.
Patent CA-2016453-A1 (CA)
Title: High emulsifier content explosives
Inventor: MULLAY JOHN J
IPC: C06B47/14
Filed: 1990-05-10
Abstract: The present invention relates to water-in-oil emulsion explosive compositions comprising a discontinuous aqueous phase, a continuous water-immiscible organic phase, and an emulsifier content being at least 45% by weight of the emulsified fuel phase which decreases precompression or dead pressing.
Patent CA-2016623-A1 (CA)
Title: Optoelectronic device
Inventor: LUETH HANS
IPC: H01L33/16
Filed: 1990-05-11
Abstract: 70577-64 An optoelectronic device, e.g. for integrated circuits, has an Si or III/V semiconductor layer and an insulating layer which is doped with lanthanides to generate an optical signal whose wavelength is determined by the 4f ions used. The insulating layer is preferably a fluoride which can be grown epitaxially on the semiconductor layer and the lanthanide element ion substituting for a metal ion of the material forming the insulating layer has the same valence as the metal for which it is substituted.
Patent CA-2017170-A1 (CA)
Inventor: SUEYASU RYOICHI
IPC: A23C19/028
Filed: 1990-05-18
Abstract: Efficient utilization of a whey protein for the production of cheese, which is resulted from the cheese production as a by-product. The whey is concentrated by an ultrafiltration, added to the concentrated milk. A milk coagulating enzyme and a lactic acid bacteria starter were added to, the resultant mixture together with warm or hot water with stirring to instantaneously elevate the temperature of the reaction mixture to coagulate and give the cheese curd.
Patent CA-2019967-A1 (CA)
Title: Improved pipe lining product, process and apparatus
Inventor: LEDOUX PATRICK R
IPC: B29C53/08
Filed: 1990-06-26
Abstract: Method and apparatus are provided for lining a pipe wherein a thermoplastic liner is initially formed in a cylindrical shape with a diameter slightly larger than the internal diameter of the pipe. The liner is temporarily deformed at an elevated temperature to a different cross-section, preferably U-shaped, to reduce its overall cross-sectional dimension to facilitate insertion into the pipe to be lined. The deformation occurs with substantially comparable elongation of the pipe lining along its opposite sides thereby precluding variations in wall thickness and stress in the pipe.      Once inserted, the liner is pressurized and reheated first to a temperature below its crystallization temperature to round the lining in the pipe and subsequently, further pressurized and reheated to a second temperature higher than the crystallization temperature to cause the liner to retain its original round shape.
Patent CA-2020142-A1 (CA)
Inventor: SCHMITT-WILLICH HERIBERT
IPC: C07F9/94
Filed: 1990-06-29
Abstract: Compounds of the formula (see above formula) wherein: one of Z1 and Z2 is H, and the other is - (CH2)m-(C6H4)q-(O)k-(CH2)n-(C6H4)l-(O)r-R, wherein m and n, independently, are each 0-20, k, l, q and r are each, independently, 0 or 1, R is H, C1-C6-alkyl, OR1-substituted C1-C6-alkyl or CH2COOR1, where R1 is H, C1-C6-alkyl or benzyl; and X is, in each case, a hydrogen atom or a metal ion equivalent of an element of atomic number 21-29, 42, 44 or 57-83; with the provisos that: at least two of the substituents X represent a metal ion equivalent; when n and 1 each are 0, then k and r are not simultaneously 1; at least one of q and l is 1; -(O)r-R is not OH; and Z1, and Z2 are not -CH2-C6H9-O-CH2-COOCH2C6H5 or -CH2-C6H4-O- (CH2)5-COOCH2C6H5; as well as their salts with inorganic and/or organic bases, amino acids or amino acid amides, are valuable pharmaceutical agents, e.g., for NMR or X-ray imaging.
Patent CA-2021324-A1 (CA)
Inventor: BERREBI GEORGES
IPC: B01J38/48
Filed: 1990-07-17
Abstract: L'invention concerne un procédé de prétraitement d'un catalyseur de raffinage ou de la pétrochimie consistant en fonction de la nature du catalyseur soit à incorporer du soufre dans la masse catalytique soit à réduire chimiquement les métaux actifs de la masse catalytique. L'invention est caractérisée en ce que une partie au moins de ce prétraitement est effectuée dans une virole tournante dans laquelle sont répartis en cercles concentriques des tubes de chauffage.
Patent CA-2027689-A1 (CA)
Title: Coating of screws
Inventor: DAY ROBERT H
IPC: F16B33/06
Filed: 1990-10-15
Abstract: ABSTRACT OF THE DISCLOSURE     COATING OF SCREWS      A method of making a screw threaded fastener (1,10) for fixing cladding to a building includes the steps of applying a mastic covering  (5,15)  to a screw threaded portion (4,13) of the fastener, and applying a non-sticky protective coating  (6,16)  to the outside of the mastic (5,15) to prevent the fasteners (1,10) sticking together during handling and packaging.  Preferably the protective coating  (6,16)  is a coating of a waxy substance and is applied to the outside of the mastic (5,15) by dipping or spraying.  The fasteners are then easy to use and form a water-tight  moisture  vapour-proof  seal  with  their fixings.    The waxy coating (16) may be applied on its own to the drill point (12) to act as a lubricant during driving of the fastener.
Patent CA-2029066-A1 (CA)
Inventor: BEACH JOHN R
IPC: E04D3/36
Filed: 1990-10-31
Abstract: In a roofing washer-dispensing machine (10) having improved features, a novel magazine (50) comprises a substantially box-like container (52) with a substantially open face, for a stack of circular roofing washers (12) having inserts, and a substantially rigid rod (80) mounted removably to a top wall of the box so as to extend downwardly into the central apertures of the stack washers, except for the lowermost washer, so as to restrain the remaining washers. The machine comprises a shuttle arranged to displace the lowermost washer from the stack when it is desired to dispense such washer. The shuttle (130) includes a novel arrangement of means overlying and underlying marginal portions of such washer.
Patent CA-2029395-A1 (CA)
Title: Cap having antitheft lock for fastening member
Inventor: OMORI SHIGERU
IPC: F16B41/00
Filed: 1990-11-06
Abstract: ABSTRACT OF THE DISCLOSURE         A cap having an antitheft lock for a fastening member and comprising a cap body (1) covering a polygonal engaging portion of the fastening member (A) and having a cavity (2) formed in the front end face of a side portion thereof, a bore (3) extending from the cavity (2) rearward therethrough and an inward slanting guide face (4) formed in the inner periphery of the cap body (1) and extending from the bore (3) toward the rear end of the cap body, a pressure contact piece (7) having an outward slanting face (6) positioned inwardly of and opposed to the inward slanting face (4) for preventing the cap from slipping off, and a screw (5) inserted through the cavity (2) into the bore (3) and having a rear end screwed into the contact piece (7) and a head (5a) bearing on the bore edge portion.  The outward slanting face (6) is slidable along the inward slanting face (4) to move the contact piece (7) axially and radially of the cap body simultaneously by rotating the screw (5) relative to the contact piece (7) in the driving-in or loosening direction.
Patent CA-2032593-A1 (CA)
Inventor: GUACIARO MICHAEL A
IPC: C07D233/70
Filed: 1990-12-18
Abstract: 2-(1-Substituted-2-imidazolin-2-yl)benzoic and nicotinic acids, and derivatives thereof, which are effective in the control of undesirable plant species are described.      Also described are a method for the herbicidal use of the compounds and a method for their preparation. Such nicotinic acids, and derivatives thereof, are illustrated as structural formula (I):    wherein X, Y, Z, A, B, R1, R2 and R3 are as defined in the specification.
Patent CA-2033454-A1 (CA)
Title: Enhancement of short-circuit current by use of wide bandgap n-layers in p-i-n amorphous silicon photovoltaic cells
Inventor: ARYA RAJEEWA
IPC: H01L31/075
Filed: 1990-12-31
Abstract: ABSTRACT OF THE DISCLOSURE      A photovoltaic cell that includes a transparent substrate, a front conductive layer formed on the substrate, a p-type layer formed on the front conductive layer, an i-layer of amorphous silicon formed on the p-layer, a wide bandgap n-type layer formed on the i-layer and a back contact layer formed on the n-type  structure.  The wide bandgap n-type layer may be an n-type sandwich structure includes first, second and third n-layers alternatingly formed on one another.  The first n-layer is formed on the i-layer, the second n-layer is formed on the first n-layer, and the n-layer is formed on the second n-layer.  The second n-layer has an optical bandgap wider than the optical bandgap of the first and second n-type layers.
Patent CA-2038202-A1 (CA)
Title: Dna and use thereof
Inventor: TOKUYAMA MASAHARU
IPC: C12N9/90
Filed: 1991-03-13
Abstract: DNA AND USE THEREOF                Abstract of the Disclosure The present invention relates to a DNA fragment containing a gene encoding acylamino acid racemase.  The acylamino acid racemase can be produced industrially at high efficiency using the DNA fragment.
Patent CA-2040631-A1 (CA)
Inventor: MORI TAKEHISA
IPC: H01L31/0232
Filed: 1991-04-17
Abstract: Disclosed is an infrared ray sensor and a method of manufacturing the same.  The infrared ray sensor includes a sensor substrate formed of an infrared ray transmitting material and having a first surface and a second surface which is in opposed relation to the first surface, an infrared ray reflecting film provided on the first surface of the sensor substrate,  infrared ray detecting elements provided on the second surface of the sensor substrate, and an infrared ray transmitting window formed in the infrared ray reflecting film in relation to the infrare ray detecting elements.  The infrared ray which enters the infrared ray transmitting window portion passes through the sensor substrate and is then made incident on the infrared ray detecting elements.  Bridges are formed on the second surface of the sensor substrate.  Each of the bridges is a silicon oxynitride film having a single layer configuration.
Patent CA-2040783-A1 (CA)
Title: Long range ultrasonic distance measuring system
Inventor: SHAH REZA H
IPC: G01S15/08
Filed: 1991-04-18
Abstract: ABSTRACT OF THE DISCLOSURE    A master transceiver and a slave transceiver are employed for providing an accurate measurement of the distance between two locations in which these transceivers are situated. A pulse signal is generated by the master transceiver, which requires a time period of t1 to travel to the slave trans-ceiver. After a time delay of t2 upon the receipt of the pulse signal by the slave transceiver it transmits a response signal back to the master transceiver. The response signal requires the same time period of t1 to be received by the master transceiver. The total time involved is compared with a reference time to distance circuit in the master transceiver to determine the distance between the two units and the distance is shown on a digital display.
Patent CA-2043030-A1 (CA)
Inventor: HAGEMEYER BRUCE A
IPC: E06B7/14
Filed: 1991-05-22
Abstract: A self draining door threshold includes a wedge-shaped silicone check valve in communication with a water reservoir on the interior side.  The check valve is normally closed but will yieldably open in response to water pressure which overcomes the resilience of the silicone material and the air pressure on the top wall of the wedge-shaped passageway.  The check valve functions as a seal against incoming air but will open to allow escape of water as needed.  The silicone material seals around foreign material in the valve making it air tight.  The bottom edge of the door includes moisture resistant material having an upwardly extending portion received in a groove.  The exterior side of the door is also covered with moisture resistant material which has inwardly extending portions received in a vertical groove between abutting panels.  A moisture resistant plate extends along the bottom edge of the door and has downwardly extending portions engaging the weather seal on the threshold on the exterior side and a wood portion of the threshold on the interior side.  The plate directs water from the vertical groove outwardly of the door.
Patent CA-2043148-A1 (CA)
Title: System and method for preparing text and pictorial materials for printing using predetermined coding and merging regimen
Inventor: ARCHIBALD DELBERT M
IPC: G06T11/60
Filed: 1991-05-23
Abstract: ABSTRACT OF THE DISCLOSURE    A method and system for locally organizing and laying out text and pictorial material for a page to be printed at a remote facility provides a layout template having a fixed grid pattern, and plural layout elements which are organized across the grid pattern corresponding to the page to be printed.          Each element contains an area for text or pictorial material.          A predetermined code is assigned to each layout element, with regard to whether the element contains text, photographs, or both.  A predetermined code is assigned to each layout element and represents the area of the element with respect to the grid pattern of the template.   A representation of the organized layout elements is generated and transmitted to the remote facility, where the pictorial and text elements are correlated and merged together to provide an output data stream representative of the page to be printed.
Patent CA-2044907-A1 (CA)
Title: Pneumatic reactor ozone bleaching of paper pulp
Inventor: FAHEY MICHAEL D
IPC: D21C9/153
Filed: 1991-06-18
Abstract: ABSTRACT      A method and apparatus for delignifying comminuted cellulosic fibrous material (paper pulp) with ozone.  Pulp having a consistency of about 25-45% is fluffed, ozone is added to it, and then it is pneumatically conveyed in a pathway for at least several seconds (e.g. about four seconds).  The majority of the gas is then separated from the pulp in a cyclone, and the pulp is discharged into a retention tube, where it is retained for at least a few seconds (e.g. about ten seconds) in a relatively static condition.  It is then fed through an air lock to another blower, and additional ozone added to it, then the above steps are repeated.  The gas separated from one cyclone can be returned as conveying gas to another blower.  The method is practiced at a pH of about 1.8-3.5, and a temperature of about 20 to 50°C.
Patent CA-2050561-A1 (CA)
Inventor: GASTINGER ROBERT G
IPC: C08G18/63
Filed: 1991-09-03
Abstract: Novel polymer polyols based on halogenated aromatic monomers such as tribromostyrene give polyurethane foams with improved flame retardant properties. For example, replacing conventional SAN polymer polyols with tribromostyrene (TBS)/acrylonitrile polymer polyols allows the preparation of polyurethane foams passing British Standard 5852, Part 2, Ignition Source 5 combustion Test and having better AST1VI E-906 values without the need for solid fillers such as melamine or aluminum trihydrate, although these and other flame retardant additives may be optionally employed as well. Elimination of these fillers also provides other improvements such as superior strength and better compression set properties. The TBS dispersions may also be used in conjunction with melamine to eliminate the need for liquid fire retardant additives.
Patent CA-2051113-A1 (CA)
Title: Process for preparing and distributing food to animals, namely piglets
Inventor: COLAS PIERRE
IPC: A01K5/02
Filed: 1991-02-08
Abstract: ABSTRACT OF THE DISCLOSURE Disclosed are a method and an installation for the preparation and distribution of feed for animals, especially for piglets. The method consists in: (a) firstly preparing, in a mixer, a predetermined volume of a mixture of dry feed and diluting liquid with a predetermined concentration of dry feedstuff; (b) then distributing, by one and the same conduit, to the trough of each of the stalls, a volume of the mixture having only one concentration obtained in the step (a) that is a function of a final volume of feed to be prepared for each trough, and (c) finally diluting, in each trough, the mixture distributed in (b) with the dilution liquid to obtain, in each trough, the final volume of feed with a predetermi-ned concentration for each trough, the dilution made in (c) being done by distributing the dilution liquid through the same conduit as that by which the mixture prepared in (a) has been distributed in (b). Figure 1.