baber/WOPTO huggingface dataset:
Patent CA-2001527-C (CA)
Inventor: SATAKE TOSHIMI
IPC: B41M5/337
Filed: 1989-10-26
Granted: 1996-05-07
Abstract: A novel optical recording medium is here disclosed in which an underlayer and a heat-sensitive color-developing layer are laminated in this order onto a base material, the underlayer containing a near infrared absorbent, the heat-sensitive color-developing layer containing a basic colorless dye and an organic developer.  The near infrared absorbent may be a dispersible near infrared absorbent which absorbs a wave length in a near infrared region of 0.7 to 2.5 µm, and this dispersible near infrared absorbent is graphite, copper sulfide, lead sulfide, black titanium or tri-iron tetroxide.  A transparent protective layer may be superposed on the heat-sensitive color-developing layer.
Patent CA-2002864-C (CA)
Title: (1h-azol-1-ylmethyl) substituted quinoline, quinazoline or quinoxaline derivatives
Inventor: FREYNE EDDY J E
IPC: C07D403/06
Filed: 1989-11-14
Granted: 1999-11-16
Abstract: (1H-azol-1-ylmethyl)substituted quinoline, quinazoline or quinoxaline derivatives, compositions containing the same, and methods of treating mammals suffering from disorders which are characterized by an excessive proliferation and/or abnormal differentiation of epithelial tissues. Process for preparing (1H-azol-1-ylmethyl) substituted quinoline, quinazoline or quinoxaline derivatives having the general formula I: (see formula I) wherein -X1=X2- is a bivalent radical, R is H or lower alkyl, Y is H or an alkyl, cycloalkyl, aromatic, substituted aromatic, alkenyl or alkynyl group, and Z is a quinoline, quinazoline or quinoxaline derivative.
Patent CA-2008232-C (CA)
Title: Low-frequency electromagnetic induction heater
Inventor: IGUCHI ATSUSHI
IPC: H05B6/02
Filed: 1990-01-22
Granted: 1994-07-19
Abstract: ABSTRACT OF THE DISCLOSURE         Disclosed is a low-frequency electromagnetic induction heater which comprises a heating element and at least six induction coils each having a circular configuration. The coils are connected in a three-phase double delta connection, are arranged in a circular and symmetrical configuration, are enclosed in a resinous mold and form three sets of coils such that each set of coils receives electrical power in a different phase from a three-phase low-frequency electrical power source, such as a commercial three-phase alternating current power source. The coils are interconnected such that the current flows from one coil to another coil placed opposite to the said one coil in the circular configuration. In a preferred embodiment, the heater consists of six coils. This invention provides for heating of the heating element with continuous attraction to the induction coils, a substantial increase of electromagnetic flux density, prevention of noise due to electromagnetic vibration of the heating element, and high thermal efficiency.
Patent CA-2023867-C (CA)
Title: Sorbitol coated comestible and method of preparation
Inventor: ZAMUDIO-TENA JOSE F
IPC: A23L27/30
Filed: 1990-08-23
Granted: 1997-05-06
Abstract: A process for producing a sorbitol coated comestible capable of being dyed without the color fading or becoming mottled, in which first and second sorbitol coating solutions are applied to a substantially anhydrous edible core to coat the edible core.  The first sorbitol solution contains:      (a)  about 25 to about 85 wt % of a sorbitol solution of about 65 to about 75 wt % sorbitol, (b)  about 3 to about 20 wt % crystalline sorbitol powder, (c)  about 0.10 to about 10 wt % of at least one film forming agent; and (d)  about 0.10 to about 15 wt % of at least one crystallization retardant including powdered gum arabic.      The second coating solution contains:      (a)  about 50 to about 90 wt % sorbitol solution of about 65 to about 75 wt % sorbitol.      (b)  about 5 to about 20 wt % crystalline sorbitol powder, and (c)  about 0.5 to about 10 wt % of at least one crystallization retardant, including powdered gum arabic.      After application of each coating solution, the solution is dried to prepare a final product which is a smooth, hard and crunchy comestible, with an even color distribution.
Patent CA-2024373-C (CA)
Title: Process and apparatus for the continuous production of absorbent bodies
Inventor: KRAEMER WOLFGANG
IPC: D04H13/00
Filed: 1990-01-03
Granted: 2001-03-20
Abstract: The invention relates to a process and an apparatus for the contiunuous production of absorbent bodies (30) from a web of fibre material (40) which is folded longitudinally several times in a foldin g station (A) and which is surrounded in a guide tube (86) with a sheathing band (82), the longitudinal edges of which are connect ed to one another by means of a closing device. The web of fibre material (30) is thereafter fed to a press station (C) which consists of pairs of press and smoothing rollers arranged in close succession and offset at 90.degree. relative to one another. By means of these press rollers, the web of fibre material (130) is rolled down in steps to or below the final cross-section of the absorbent body (30) , to form a fleece rod (240). Subsequently, the absorbent bodies (30) are pinched by means of pinching rollers (334, 338) in  a severing station (D) and are thereby preformed at the front end and thereafter fed to a forming device, by means of which the fron t ends of the absorbent bodies (30) are equipped with a round dome and the rear ends of the absorbent bodies (30) with a depressio n as an insertion aid, when the absorbent body (30) is to be used as a tampon for feminine hygiene. The process and the apparatu s allow the high-speed mass production of absorbent bodies which,whilst using less material, make it possible to achieve a higher stability or buckling resistance of the absorbent bodies.
Patent CA-2026694-C (CA)
Inventor: HAMILTON HAROLD J
IPC: G11B5/84
Filed: 1990-10-02
Granted: 1994-07-26
Abstract: An integrated, unitary micro-burnishing head structure for use with the surface of rigid magnetic recording media.  In one type of embodiment, the proposed head structure includes a single elongate flexure body to one end of which is joined a media-contacting abrader head which may take any one of several different preferred shapes.  In another embodiment, plural elongate flexure bodies are disposed in a comb-like array carrying abrader heads at one set of free ends, and joined adjacent their opposite ends through a common joinder structure.
Patent CA-2029303-C (CA)
Title: Packing
Inventor: UEDA TAKAHISA
IPC: F16J15/22
Filed: 1990-11-05
Granted: 1999-08-10
Abstract: The present invention relates to packing for hermetically sealing a member. The packing in accordance with the present invention comprises knitting yarns each of which includes a plurality of longitudinally arranged reinforcing fiber yarns and expanded graphite integrally bonded to at least one side of the reinforcing fiber. yarns with adhesives. The knitting yarns are provided with excellent sealing properties and strong tensile strength and toughness. A plurality of such knitting yarns may be put together to form a core member. The core member may be covered, at the outer periphery, with a braided body of the knitting yarns. A plurality of such knitting yarns may be braided (square-knitted) or twisted. Thus, packing having a free length may be obtained. The packing thus obtained may be used cut, at a site, to a predetermined length according to the sizes of the object member to be sealed. This eliminates production, based on estimations in advance, of a variety of annular packing according to the sizes of object members to be sealed, as done in molded packing.
Patent CA-2029795-C (CA)
Title: Pipeline conditioning process for mined oil-sand
Inventor: CYMERMAN GEORGE J
IPC: B03B9/02
Filed: 1989-11-10
Granted: 1996-11-05
Abstract: As-mined, naturally water-wet oil sand is mixed at the mine site with hot water, air and NaOH to produce a slurry.  The slurry is pumped through a pipeline at least about 2.5 kilometres in  length  and  is  fed  directly  to  a  conventional  gravity separation vessel.   In the course of being pumped through the pipeline, sufficient coalescence and aeration of bitumen occurs so that, when subsequently retained in the vessel under quiescent conditions,  a desirable amount of  the  bitumen  floats,  forms froth, and is recovered.
Patent CA-2037198-C (CA)
Inventor: MANABE KATSUHIDE
IPC: H01L33/00
Filed: 1991-02-27
Granted: 1996-04-23
Abstract: Disclosed herein is a light-emitting semiconductor device that includes a gallium nitride compound semiconductor (AlxGa1-xN) comprising an n-layer and an i-layer, at least one of them being of a double layer structure. In one embodiment the n-layer has a double-layer structure including an n-layer of a low carrier concentration and an n+-layer of a high carrier concentration, the former being adjacent to the i-layer. In another embodiment, the i-layer has a double-layer structure including an iL-layer of a low impurity concentration containing p-type impurities in a comparatively low concentration and an iH-layer of a high impurity concentration containing p-type impurities in a comparatively high concentration, the former being adjacent to the n-layer. In still another embodiment, both of the n-layer and the i-layer have a double layer structure. Also disclosed is a method for producing the light-emitting semiconductor device which employs a vapor phase epitaxy. In one preferred method, an n-type gallium nitride compound semiconductor (AlxGA1-xN) having a controlled conductivity is produced from an organometallic compound by vapor phase epitaxy, by feeding a silicon-containing gas together with other raw material gases at a controlled mixing ratio.
Patent CA-2039819-C (CA)
Title: Load switch for a step transformer
Inventor: DOHNAL DIETER
IPC: H01H9/38
Filed: 1991-04-04
Granted: 2002-02-19
Abstract: A switching system for a step transformer having at least two adjacent taps and a pair of terminals shiftable between the taps has a pair of fixed contacts normally connected to the terminals, a vacuum interrupter connected between the terminals and displaceable between an open-circuit position and a closed-circuit position, a pair of movable contacts each engageable with a respective one of the fixed contacts and forming therewith a respective bypass switch, and a cam rotatable about a cam axis and having a contact face and an axially oppositely facing interrupter face each formed with a respective operating formation. A drive rotates the cam about its axis through steps of a half revolution. A respective cam follower engaged between each of the movable contacts and the contact-face formation opens and closes one of the bypass switches on rotation of the cam through a half revolution and thereafter opens and closes the other of the bypass switches on rotation of the cam through a succeeding half revolution. Another cam follower and a force storer engaged between the interrupter and the interrupter-face formation snap the interrupt-er open and then snap it closed each time the cam is rotated through a half revolution.
Patent CA-2048339-C (CA)
Title: Semiconductor member and process for preparing semiconductor member
Inventor: YONEHARA TAKAO
IPC: H01L21/762
Filed: 1991-08-02
Granted: 1997-11-25
Abstract: A process for preparing a semiconductor member comprises the steps of: forming a member having a non-porous monocrystalline semiconductor region on a porous monocrystalline semiconductor region, bonding the surface of a member of which the surface is constituted of an insulating substance onto the surface of the non-porous monocrystalline semiconductor region, and then removing the porous monocrystalline semiconductor region by etching.
Patent CA-2049225-C (CA)
Title: Programmable frequency dividing apparatus
Inventor: ADACHI NOBUYUKI
IPC: H03K23/66
Filed: 1991-08-15
Granted: 1996-10-22
Abstract: A   programmable   frequency   dividing   apparatus comprises  a  programmable  frequency  dividing  network which has a plurality of cascade-connected programmable frequency  dividing  staged.    Each  stage  divides  a frequency of an input clock pulse by two or three based on  a  logic  level  of  a preset  input  signal  supplied thereto for changing a division ratio.   Circuits are provided  for  incrementing  a  division  ratio  of  the programmable  frequency  dividing  network  by  +1.  The circuit for incrementing comprises gates for detecting whether or not each of  the  outputs  of  programmable frequency dividing stages of a programmable frequency dividing network,  subsequent to a second stage of the programmable  frequency  dividing  network,  assumes  a predetermined pattern.   The circuit also sets a preset input  signal  applied  to  a  first  stage  of  the programmable  frequency  dividing  network  to  a  change-over  level  for  causing  the  first  stage  of  the programmable frequency dividing network to divide the frequency  of  the  clock  pulse  by  three   when  an instruction signal for incrementing a division ration by +1 is inputted to the gates.
Patent CA-2056145-C (CA)
Title: Block for reversibly blocking the bore of a pipe
Inventor: ASHCROFT IAN
IPC: F16L55/11
Filed: 1991-11-25
Granted: 1996-09-17
Abstract: A pipe block for reversibly blocking the bore of a pipe comprises a body 2 having a shaft 3,4, a plurality, in this case three, spaced apart annular flanges 5 extending from the shaft to form a close fit with the internal wall 31 of the pipe 30 and means in the form of a funnel 8 attached to the shaft for guiding the threaded end 23 of a rod 20 into an internally threaded bore 6 of the shaft.
Patent CA-2059185-C (CA)
Inventor: PRINCE ROBERT
IPC: C23C14/54
Filed: 1992-01-10
Granted: 1999-03-30
Abstract: PROCESS AND APPARATUS FOR PRODUCTION OF      DIAMOND-LIKE FILMS                       ABSTRACT      A process for production of diamond-like films comprising the steps of physically ablating a source of carbon in the vicinity of a substrate such that a carbon film grows on the substrate through bonding of carbon atoms in graphitic form and aliphatic form; and physically discriminating the carbon film during growth thereof by supressing or etching the graphitic form within the carbon film while permitting the aliphatic form to remain thereby resulting in a diamond-like film.
Patent CA-2070203-C (CA)
Title: Polymer filter with backflush pump
Inventor: WHITMAN TIMOTHY W
IPC: B01D29/62
Filed: 1992-06-02
Granted: 1995-07-11
Abstract: A filter for flowing polymer having a filter element progressively advanced between an on-stream position communicating between the upstream and downstream passages and a backflush position.  In the latter position, filtered polymer is forced through a segment of the element in the direction opposite to on-stream flow.  The filter is advanced in steps alternately with the energization of a pump for creating the backflush pressure.  The steps are determined to cause each filter portion to remain in the backflush position for at least two consecutive steps.
Patent CA-2071463-C (CA)
Title: Delivery device in the folding apparatus of a rotary printing press
Inventor: NOVICK MICHAEL ALEXANDER
IPC: B65H29/40
Filed: 1992-06-17
Granted: 1998-02-03
Abstract: A delivery device in a folding apparatus of a printing press includes a fan wheel or several fan wheels disposed next to one another.  The fan wheels are formed of individual fan blades, between which fan wheel pockets are formed.  Leading edges of the fan blades have a first profile and trailing edges of the fan blades have a second profile.
Patent CA-2072837-C (CA)
Title: Blue emitting internal junction organic electroluminescent device (i)
Inventor: VANSLYKE STEVEN ARLAND
IPC: H05B33/12
Filed: 1992-06-30
Granted: 2001-09-04
Abstract: An internal junction organic electroluminescent device is disclosed comprised of, in sequence, an anode, an organic hole injecting and transporting zone, an organic electron injecting and transporting zone, and a cathode. The organic electron injecting and transporting zone is comprised of an electron injecting layer in contact with the cathode and, interposed between the electron injecting layer and the organic hole injecting and transporting zone, a blue emitting luminescent layer comprised of a bis(Rs-8-quinolino-lato)aluminum(III)-µ-oxo-bis(Rs-8-quinolinolato)-aluminum(III), where Rs substituents are chosen to block the attachment of more than two substituted 8-quinolinolato ring nuclei to any one aluminum atom. Increased operating stability and device emission at even shorter blue wavelengths can be realized by the incorporation of a pentacarbocyclic aromatic fluorescent dye.
Patent CA-2076940-C (CA)
Title: Fluorescent lamp operating circuit, particularly for a compact fluorescent lamp
Inventor: ROLL ULRICH
IPC: H05B41/233
Filed: 1992-08-26
Granted: 2001-11-27
Abstract: To eliminate the necessity for a saturated or air gap inductance to provide a feedback circuit for a self-exciting oscillator including two active electronic switches (T1, T2), for example MOSFETs, an auxiliary winding (HW1, HW2,....HW11) is inductively coupled to the resonance inductance (L2) present in the circuit for the discharge lamp (LP) anyway; and a pulse shaping - phase shifting network (R3, C3; R4, C4....), devoid of inherent resonance, coupling the auxiliary winding to the active switching elements.      The pulse shaping - phase shifting network is formed of a one or multiple-stage RC low-pass circuit, connected serially between the auxiliary winding and the control input, for example the gate, of the active switching element. The RC network can be constructed with variable elements, for example including PTC resistors, a varistor or the like, and may include a current source, protective circuits to protect against voltage peaks including Zener diodes.      The low-pass characteristics of the pulse shaping - phase shifting network permits switching of the active semiconductor switches after the maximum current flow.
Patent CA-2080498-C (CA)
Title: Ventilation method and means for the same
Inventor: NILSSON JAN GOESTA INGEMAR
IPC: F24F8/158
Filed: 1992-10-14
Granted: 1996-03-19
Abstract: The invention relates to a method of establishing and maintaining in sealed tents or the like mobile units, an environment which is independent of the surroundings with regard to temperature and contamination. The inven-tion is characterized by taking air from the surround-ings, extracting contaminated particles and gas from the air by filtration, and causing the air to pass into the mobile unit so as to establish a predetermined air pressure which is higher than the air pressure of the surroundings. The filtered air is mixed with air recy-cled from within the mobile unit when the aforesaid predetermined air pressure has been reached and mixing of the filtered air with recycled air is continued for as long as the internal air pressure is equal to or greater than the predetermined air pressure. The air mixture is heated or cooled to a predetermined tempera-ture and is then distributed essentially uniformly in the mobile unit and filtered, in conjunction therewith, so as to extract any remaining particles and gas.            The invention also relates to an arrangement for carry-ing out the method.
Patent CA-2080514-C (CA)
Title: Shower curtain snubber
Inventor: DUTKA JOHN
IPC: A47K3/38
Filed: 1992-10-14
Granted: 1997-01-21
Abstract: A shower curtain is retained against the side of the tub to prevent blowing of the curtain into the tub against an occupant. The retainer or snubber is an elongate line extending from one end of the tub to the other. The line is anchored to the tub enclosure at one end of the tub and may be detachably engaged with a retainer at the opposite end. An additional anchor may be mounted on the wall at the fixed end of the line for storing the line when it is not in use.
Patent CA-2081130-C (CA)
Title: Hydroprocessing catalyst composition
Inventor: CREIGHTON JOHN EVERETT
IPC: B01J23/85
Filed: 1992-10-22
Granted: 2004-01-20
Abstract: Hydroprocessing catalysts which comprise alumina and Group VIB and VIII metal components having a desired pore size/volume distribution and high surface area, i.e. above 330 m2/g.
Patent CA-2088120-C (CA)
Inventor: LU YING-YUH
IPC: C09J7/02
Filed: 1993-01-26
Granted: 2004-01-13
Abstract: The present invention relates to a latex comprising: (a) a copolymer mixture comprising about 40 to about 70 weight percent of a solid phase, said solid phase comprising the reaction product of: (i) about 70 to about 98.5 percent by weight of monomer selected from the group consisting of C4 to C12 alkyl acrylate ester monomer and mixtures thereof; (ii) about 0 to about 20 percent by weight of monomer selected from the group consisting of vinyl esters, C1 to C4 esters of (meth)acrylic acid, styrene, and mixtures thereof; (iii) about 1 to about 10 percent by weight of polar monomer copolymerizable with said monomer of element (a)(i) and element (a)(ii); (iv) about 0.5 to about 20 percent by weight of a hydrophobic polymer which is incapable of reaction with said monomers of elements (a)(i), (a)(ii), and (a)(iii), wherein said hydrophobic polymer has a number average molecular weight ranging from about 400 to about 50,000; (v) about 0.01 to about 1 percent by weight of an initiator; (vi) about 1 to about 10 percent by weight of an ionic copolymerizable surfactant; (vii) about 0 to 1 percent by weight of a chain transfer agent; and (viii) about 0 to 5 percent by weight of a crosslinking agent; wherein the percentages of (v), (vi), (vii), and (viii) are each based on the total weight of (i) plus (ii) plus (iii) plus (iv) and wherein the percentages of (i), (ii), (iii) and (iv) are each based on the total weight of (i) plus (ii) plus (iii) plus (iv); and (b) about 30 to about 60 percent by weight of an aqueous phase; wherein said weight percentages of (a) and (b) are each based on the total weight of said latex.
Patent CA-2096587-C (CA)
Inventor: STREICHER ROBERT P
IPC: G01N31/22
Filed: 1993-05-19
Granted: 1999-10-26
Abstract: The present invention provides far a method for detecting the presence of isocyanate in a sample by (a) contacting an isocyanate derivatizing reagent having the formula I      R-R'        (I) wherein R is 9-anthracenylmethyl or a derivative thereof and R' is a radical having a single isocyanate-derivatizing functionality comprising a radical derived from a cyclic secondary amine with a sample under conditions suitable to the formation of a reaction product capable of detection and (b) detecting the presence or absence of the reaction product as an indication of the presence or absence of isocyanate in said sample. The present invention also provides a method of quantifying the total isocyanate presence by quantifying the reaction product.
Patent CA-2111876-C (CA)
Inventor: KUZAN PAWEL
IPC: F16L55/26
Filed: 1993-12-20
Granted: 1997-09-09
Abstract: A device for repairing cast iron pipe joints comprises a head having a motor for actuating a tool and a body, the head being pivotally connected to the body so that it can be pivoted from an axial position to a radial position within the pipe.  In a preferred embodiment, the head includes a motor driving a drill bit.  A retractable foot is extended to force the head against the pipe wall to be pierced by the drill bit, following which sealant is injected into a hollow drill shaft and flows up the helical grooves of the drill bit into the pipe joint cavity.  Preferably a pair of guide wings maintains the device centred in the pipe and raised off of the pipe floor, and the operator monitors progress of the device through a video monitor.
Patent CA-2115745-C (CA)
Inventor: GODWIN ALLEN D
IPC: C09K8/34
Filed: 1992-08-14
Granted: 2002-12-10
Abstract: Ethers, for example those produced by acid-catalysed dehydration of alcohols, are freed from esters by treatment with an alkoxide, and are especially suitable as drilling fluid components.