baber/WOPTO huggingface dataset:
Patent CA-2025889-A1 (CA)
Title: Pour point detection
Inventor: KER VICTORIA S
IPC: G01N25/04
Filed: 1990-09-20
Abstract: The present invention relates to an apparatus and process for estimating the pour point-of a hydrocarbon oil.      The pour point of hydrocarbon oil gives an indication of its low temperature properties, and is determined according to the time-consuming procedures set out in the American Society of Testing and Material (ASTM) test D-97. The present invention generally provides a convenient means to estimate the pour point of a hydrocarbon oil, by directing a flow of pressurized gas towards a sample of the oil, and determining the warmest temperature at which the gas flow does not pause a substantial surface wave on the oil surface.
Patent CA-2026370-A1 (CA)
Title: Method and apparatus for recovering refrigerants from home refrigeration systems
Inventor: NELSON JOHN A
IPC: F25B45/00
Filed: 1990-09-27
Abstract: METHOD AND APPARATUS FOR RECOVERING REFRIGERANTS FROM HOME REFRIGERATION SYSTEMS     Abstract of the Disclosure There is disclosed herein a refrigerant container in the form of a bag,  or pouch, made from two sheets of multi-layer barrier  film material  which are heat  sealed adjacent their edges to form a closed pouch which has an interior space.  The bag may be connected to an access valve provided in a line of a sealed refrigeration system for capturing  the  refrigerant  therefrom.   The  barrier  film material  is specially  formulated  to  prevent  outward permeation of a refrigerant and to prevent inward permeation of air.  A valve stem is provided for filling and emptying the bag.
Patent CA-2027915-A1 (CA)
Title: Remoistenable adhesive composition
Inventor: NESIEWICZ RUSSELL J
IPC: C09J7/04
Filed: 1990-10-18
Abstract: ABSTRACT   This invention is for a liquid remoistenable adhesive composition having suitable high temperature and high humidity properties comprising water and a combination of a partially hydrolyzed polyvinyl alcohol and a chemically inert, non-thermoplastic, cold water insoluble, particulate additive which is compatible and dispersible with the polyvinyl alcohol and provides resistance to hygroscopic blocking and thermoplastic blocking.
Patent CA-2030052-A1 (CA)
Title: Industrial screens
Inventor: SANDERSON LESLIE
IPC: B01D35/28
Filed: 1990-11-15
Abstract: INDUSTRIAL SCREENS                    ABSTRACT OF THE DISCLOSURE           A screen which is suitable for use in a digester in the wood pulping industry comprises a plurality of bars (12) arranged in parallel spaced relationship to define elongate screening slots (14) between adjacent bars (12). A plurality of support members (16) extending transversely of the bars (12) and supporting the bars (12) in said parallel spaced relationship is provided.  The support members (16) comprise elongate metal strips bent into a crest and having a plurality of bar-receiving slots (18) spaced along the length thereof.  The bars (12) have a profile in cross section which is of elongate shape with a widened portion (12.1) at one end and tapering in a non-rectilinear fashion towards the other end and inserted into the bar-receiving slots (18) at the other end.  The bars (12) are secured in the bar-receiving slots (18) by welded joints (20) which are formed on the insides of the crests of the support members (16).
Patent CA-2030876-A1 (CA)
Title: Tray feed arrangement
Inventor: MERRITT ROBERT D
IPC: B65B43/52
Filed: 1990-11-26
Abstract: ABSTRACT OF THE DISCLOSURE          A  means  for  precisely  depositing containers into a moving nest,  with  the  means being  relatively insensitive  to  the  speed of the nest.  Each container is positioned over a lug which is driven  at  the  speed of  the  moving  nest  and the container is aligned with the nest.  When the container and nest are  aligned  and at  the  same  speed,  the container is dropped into the nest.
Patent CA-2031450-A1 (CA)
Title: Method of assaying or analyzing subtypes of human leukocyte interferons or their antibodies, and antibodies to be used therefor
Inventor: KOGA JUNICHI
IPC: G01N33/53
Filed: 1990-12-04
Abstract: Abstract of the disclosure:       Antiserum which can recognize all subtypes of human leukocyte interferon is prepared from the blood of an animal immunized with partially purified human leukocyte interferon obtained from a culture of human leukocyte stimulated with Sendai virus.     The antiserum is added to a column whereon concentrated culture broth of human leukocyte has been immobilized to adsorb impurities, the effluent is added to a column whereon partially purified human leukocyte interferon has been immobilized to adsorb anti-human leukocyte interferon antibody and then the antibody is eluted from the column.     The antibody thus obtained recognizes all subtypes of human leukocyte interferon and can be separated by a chromatography to each monoclonal antibody which recognizes a single subtype.     Employing these antibodies, the subtypes of human leukocyte interferon or their antibodies in a sample can be analized or assayed.
Patent CA-2032016-A1 (CA)
Title: Self supporting, selectively collapsible soft-walled carrier
Inventor: JACOBER JEFFREY M
IPC: A45C7/00
Filed: 1990-12-13
Abstract: SELF SUPPORTING, SELECTIVELY COLLAPSIBLE          SOFT-WALLED CARRIER            ABSTRACT OF THE DISCLOSURE           Upstanding soft-walled carriers having upstanding end panel doors are described.  The soft walled carriers are made from a plurality of pliable panels, some of them having a resilient pliable construction, joined together along their edges by flexible corners.  The panels cooperate in such manner that the carriers are self-supporting in a free upstanding position.  A removable resilient pliable end panel insert is provided for additional support.  In a preferred embodiment, the self-supporting soft walled carriers are also selectively collapsible along defined fold lines for self contained compressed storage.
Patent CA-2032315-A1 (CA)
Inventor: SAMUELSON HANS O
IPC: D21C/
Filed: 1990-12-14
Abstract: Up to now, full scale use of the from the environmen-tal point of view excellent bleaching agent ozone, has been hampered e.g.  by the  comparatively large amounts required and the excessive depolymerization of the pulp. The present invention aims  at solving  these problems and relates to a three-step method for bleaching chemical pulp with a lignin content corresponding  to a  kappa number not exceeding 10. This method is characterized  in that  the bleaching begins with a  chlorine dioxide  step at a comparatively high pulp consistency, and that the pulp, after the bulk  of chlorine dioxide has  been consumed, is intimately contacted with an ozone-containing aqueous solution and brought to react with the ozone  at a considerably lower pulp consistency than in the chlorine dioxide bleaching,  whereupon the  pulp under-goes an alkaline treatment in the presence of oxygen and/or an oxidizing agent giving off oxygen.
Patent CA-2034027-A1 (CA)
Inventor: BARTH JOHN E JR
IPC: G11C29/42
Filed: 1991-01-11
Abstract: A DRAM having on-chip ECC and both bit and word redundancy  that have  been  optimized  to  support  the on-chip  ECC.   The  bit  line  redundancy  features  a switching   network   that   provides   an   any-for-any substitution for the bit lines in the associated memory array.   The  word  line  redundancy  is  provided  in  a separate  array  section,  and  has  been  optimized  to maximize signal while reducing soft errors.  The array stores data in the form of error correction words (ECWs) on each word line.  A first set of data lines (formed in a zig-zag pattern to minimize unequal capacitive loading on the underlying bit lines) are coupled to read out an ECW as well as the redundant bit lines.  A second set of data lines receive the ECW as corrected by bit line redundancy, and a third set of data lines receive the ECW as corrected by the word line redundancy.  The third set of  data  lines  are  coupled  to  the  ECC  block,  which corrects  errors  encountered  in  the  ECW.   The  ECC circuitry  is optimized  to  reduce  the  access  delays introduced by-carrying out on-chip error correction.  The ECC block provides both the corrected data bits and the check bits to an SRAM.   Thus,  the check bits can be externally accessed, improving testability of the memory chip.  At the same time, having a set of interrelated bits in the SRAM improves access performance when using multi-bit access modes,  which compensates for whatever access delays are introduced by the ECC.  To maximize the efficiency of switching from mode to mode, the modes are set as a function of received address signals.
Patent CA-2035992-A1 (CA)
Title: Ore flotation process and use of phosphorus-containing sulfo compounds
Inventor: PIEDRAHITA CARLOS A
IPC: B03D1/014
Filed: 1991-02-08
Abstract: ABSTRACT OF THE DISCLOSURE         The present invention relates to an improved process for beneficiating an ore containing sulfide materials with selective rejection of pyrite, pyrrhotite and other minerals and gangue.   In particular,  the process is useful for beneficiating ores and recovering metals such as copper,  lead,  zinc,  etc.,  from said ores.  In one embodiment the process comprises the steps of:              (A)  forming a slurry of at least one crushed mineral-containing ore, water and at least one collector which is an acid,  or an anhydride,  ester, ammonium salt or metal salt of the acid that is repre-sented by the formula (I)                 or (II)   wherein each R1  and R2 is independently a hydrocar-byl or hydrocarbyloxy or hydrocarbylthio group;              each X1  and X2 is independently sulfur or oxygen; R3 is a divalent hydrocarbyl group, each  R4  and R5  is  independently  a hydrogen or hydrocarbyl group;              a is 0 or 1; b is 0 or 1; c is 1 or 2; Q is a divalent, trivalent or tetravalent hydrocarbyl group or -C(X3)NR5Q';        X3 is sulfur or oxygen; Q' is a divalent, trivalent or tetravalent hydrocarbyl group provided Q' is not divalent in Formula II;              Z is -S(O)OH, or -S(O)2OH. (B)  subjecting the slurry from step  (A) to froth flotation to produce a froth; and (C)  recovering a mineral from the froth.
Patent CA-2036831-A1 (CA)
Title: Sterilization with ethylene oxide
Inventor: BOYNTON JOHN V
IPC: A23L3/3409
Filed: 1991-02-25
Abstract: P.F. 1679 ABSTRACT OF THE DISCLOSURE    A method of treating an article with a mixture of ethylene oxide gas, air, and an inert gas which makes possible reuse of the ethylene oxide for an indefinite number of successive treatment cycles.  The gas mixture is refortified with ethylene oxide when necessary.  Nonflammability is maintained by removing air from the treatment tank before the mixture is admitted into the tank by the evacuation of the tank to a predetermined pressure, the admitting of an inert gas to the tank to a predetermined pressure, and the subsequent removal of the resulting air and inert gas mixture from the tank by evacuation to a predetermined pressure, the air removal resulting in an air proportion less than or equal to that proportion residing in the treatment mixture that is maintained in the holding tank.
Patent CA-2039010-A1 (CA)
Title: Infant incubator humidifier
Inventor: MILLER KENNETH G
IPC: A61M16/16
Filed: 1991-03-25
Abstract: ABSTRACT           An infant incubator humidifier having a heater within a heater tower which, in turn, is in heat transfer disposition with a metal sleeve mounted within a water reservoir through which air which is to be humidified is passed.  The metal sleeve has a wick disposed on its outside surface and water in the reservoir is wicked along the wick, whereby air introduced into the reservoir is humidified upon contact with the wick.
Patent CA-2039348-A1 (CA)
Title: Method of adding silver to calcium carbonate
Inventor: ASAI SOICHI
IPC: C04B41/51
Filed: 1991-03-28
Abstract: ABSTRACT    This  invention  relates  to a method of  adding  silver  to calcium  carbonate utilized as a purifying agent of water.   The calcium carbonate is dipped in a silver nitrate solution having a determined  concentration.   Then, the calcium  carbonate  having silver  carbonate  and the like adhered thereto is  treated  with sodium ascorbate or sodium erythorbate to reduce silver.  Another invention  comprises  directly heating calcium  carbonate  having silver carbonate adhered thereto uniformly in the air or nitrogen current at a temperature of 200°C or more.
Patent CA-2039522-A1 (CA)
Inventor: ITOH HISATO
IPC: G11B7/249
Filed: 1991-04-02
Abstract: The invention discloses a CD-WO type optical recording medium which has a constitution obtained by successively laminating a recording layer, a metal re-flection layer and a protective layer; is prepared by using in the recording layer a colorant having a melting point of 150 to 300°C, decomposition initiating tempera-ture of 200 to 350 °C, and .lambda. max of 720 nm; and has high sensitivity, low recording distortion and high durabili-ty.  The colorant can be enhanced its effect by introduc-ing halogen atoms.
Patent CA-2041433-A1 (CA)
Title: Eyeglass frame
Inventor: KANDA KIYOMI
IPC: G02C5/06
Filed: 1991-04-29
Abstract: ABSTRACT OF THE DISCLOSURE  An eyeglass frame includes a lens frame having a pair of opposed endpieces, two hollow connectors each having one end pivoted to one of the endpieces, and two elongated bows each having one end pivoted to the other end of one hollow connector.  The elongated bows are turnable relative to the hollow connectors between a first bow position,  wherein the  elongated bows  are aligned with the hollow connectors,  and a second bow position,  wherein the elongated bows are positioned transverse to and inward of the hollow connectors. The hollow  connectors  are  turnable  relative  to  the endpieces about a generally vertical plane between a first connector position, wherein the hollow connectors extend rearwardly and horizontally from the endpieces, and a second connector position,  wherein the hollow connectors  extend  vertically  downward  from  the endpieces. The hollow connectors can also be moved a small  distance  on  a  curved  side  surface  of  the endpieces along a generally horizontal plane to adjust the spacing between the elongated bows.
Patent CA-2041912-A1 (CA)
Inventor: LEE ANDREW
IPC: B60P7/12
Filed: 1991-05-07
Abstract: A trailer for cylindrical fluid containers, particularly compressed gas tubes, arranged in modules individually removable from the trailer. Each module has a front and a rear bulkhead between which tubes are supported.  The tubes have reduced cylindrical ends which protrude through and are supported in openings in the bulkheads.  At least one end of the tubes is threaded and clamped by a nut or a collar flange to a bulkhead.  Each bulkhead has a stiffening, right-angle flange along each vertical edge which aligns with and is clamped to each adjacent module.  At their bottom, the bulkheads abut and are attached to an upwardly extending side of an L-shaped structural member, the other side being mounted to the trailer frame.  The tubes are arranged in line horizontally and vertically with space between them.
Patent CA-2044430-A1 (CA)
Inventor: HEIL DONALD J
IPC: A61C1/08
Filed: 1991-06-12
Abstract: A quick connect/disconnect coupling for dental handpieces that includes a pair of telescoping coupling sleeves equipped with a plurality of bayonet slots and lugs for detachably connecting the sleeves together.      In one sleeve is a spring-loaded connector body having a plurality of axially extending passages communicating with the fluid (air and water) conduits of a supply hose, the connector having a hard-surface planar end face exposed at the distal end of the sleeve. The other sleeve is a proximal extension of a handpiece and contains a plurality of tubes arranged and dimensioned to be received in the passages of the connector body when the two sleeves are coupled together. A resilient gasket, confined by a rigid support ring, surrounds the tubes and includes frusto-conical ring portions about such tubes for sealingly engaging the end face of the connector body.      When the sleeves axe coupled together, the spring-loaded connector body is axially displaced so that the force of the spring maintains the body and gasket in sealing contact under a predetermined and reproducible compressive load.
Patent CA-2047722-A1 (CA)
Title: Strapping machine for compressible loads
Inventor: RIBALDO DAVID A
IPC: B30B9/30
Filed: 1990-03-15
Abstract: STRAPPING MACHINE FOR  COMPRESSIBLE LOADS          ABSTRACT   A strapping machine arranged to compress a load (16) along a vertical axis, as well as along a longitudinal, horizontal axis, and to confine the load along a transverse, horizontal axis, before strapping the load.  A platen (70) is arranged for vertical movement toward and away from a roller table (50). Load-end formers (90, 92) are arranged, in pairs for relative movement toward and away from each other along a longitudinal, horizontal axis, and for relative movement along the platen (70), in engagement with the platen (70) at least after the platen (70), has been lowered partially.  Load-confining doors (280, 290) are pivotable between closed positions, in which such doors (280, 290) confine opposite sides of the loads (16), along a transverse, horizontal axis, and opened positions.  Strapping heads (350, 352, 354, 356) and coacting strap chutes (390, 392, 394, 396) are carried by the platen (70).
Patent CA-2047740-A1 (CA)
Title: Procedure for producing fine fibre, and fine fibre
Inventor: KARINEN PERTTI
IPC: A23L33/24
Filed: 1990-03-07
Abstract: ABSTRACT           The  invention  concerns  a procedure  for producing cellulose-containing fine fibre meant for raw material in the foodstuff and animal feed industry, the cereal product being treated with an enzyme preparation, the treated product being homogenized and the cellulose-containing  fine  fibre  being  separated  from  the homogenized product.
Patent CA-2048844-A1 (CA)
Title: Low water content semi-solid ethanol based fuel
Inventor: PARKOS WILLIAM G
IPC: C10L7/04
Filed: 1991-08-09
Abstract: Abstract A solid or semi-solid fuel having an approximate formulation of 81% to 93% ethanol, 8% to 3.5% stearic acid, 1.5% to .25% of 50%  solution of  sodium hydroxide;  and  0%  to  7% methanol  or isopropyl alcohol used to denature the ethanol.
Patent CA-2048932-A1 (CA)
IPC: F01D25/16
Filed: 1991-08-12
Abstract: An engine turbocharger, particularly of the two cycle diesel type for railway locomotives and other applications, has a rotor with an overhung compressor supported by a compressor journal bearing and thrust flange combination.  The bearing combines a multi (two) lobed offset cylindrical wedge film inner surface with a close clearance squeeze film outer surface that causes the bearing to float laterally in a support member to damp shaft runout while supporting the rotor on load controlling oil wedges.  The fixed flange provides thrust control and provides a loose pin connection with the bearing that prevents rotation while permitting its squeeze film damping lateral motion.  Particular pressure lubrication means provide oil to the bearing interior and exterior adequate for the oil wedge supporting and squeeze film damping functions.
Patent CA-2051568-A1 (CA)
Title: Novel material package for fabrication of fusing components
Inventor: BADESHA SANTOKH S
IPC: G03G15/20
Filed: 1991-09-17
Abstract: A fuser member comprising a supporting substrate having an outer layer of a volume grafted elastomer which is a substantially uniform integral interpenetrating network of a hybrid composition of a fluoroelastomer and a polyorganosiloxane, said volume graft having been formed by dehydrofluorination of said fluoroelastomer by a nucleophilic dehydrofluorinating agent, followed by addition polymerization by the addition of an alkene or alkyne functionally terminated polyorganosiloxane and a polymerization initiator.
Patent CA-2057005-A1 (CA)
Title: Use of selected oleophilic alcohols in water-based drilling fluids of the o/w emulsion type and corresponding drilling fluids with improved ecological acceptability
Inventor: MUELLER HEINZ
IPC: C09K8/04
Filed: 1990-05-07
Abstract: The use is disclosed of at least substantially water-insoluble mono-and/or polyfunctional alcohols of natural and/or synthetic origin which are fluid and/or at least plastically deformable at working temperature and have flash points of at least 80°C, or corresponding solutions of mono- and/or polyhydric alcohols in ecologically acceptable water-insoluble oils as the dispersed oil phase of water-based O/W-emulsion drilling fluids, which are suitable for an environmentally-acceptable development of geological formations and which, if desired, contain insoluble, finely particulate weighting agents for the formation of water-based O/W-emulsions drilling muds and/or further additives, such as emulsifiers, fluid-loss additives, wetting agents, alkali reserves and/or auxiliary substances for the inhibition of drilled rock of high water-sensitivity.
Patent CA-2058985-A1 (CA)
Title: Conjugate compounds containing aza-macrocycles, and processes for their preparation
Inventor: PARKER DAVID
IPC: C07K16/00
Filed: 1991-04-18
Abstract: Conjugate compounds are described comprising a compound of formula (1), wherein A is a group -Alk3- or -Alk3N(R4)Alk4-;  Alk1, Alk2, Alk3 and Alk4 which may be the same or different is each a C1-4alkylene chain optionally substituted by one or more C1-6alkyl groups; and R1, R2, R3 and R4, which may be the same or different, is each a hydrogen atom or a group-AlkR5 where Alk is an optionally substituted straight or branched C1-6 alkyl group and R5 is a hydrogen atom or a -CO2H, -CONR6R7 (where R6 and R7, which may be the same or different is each a hydrogen atom or an alkyl group) or -P(X1)(X2R8)L group where X1 and X2 is each an oxygen or sulphur atom, R8 is a hydrogen atom or an alkyl group and L is an aliphatic, aromatic, or heteroaromatic group or a linker group with the proviso that at least one of R1, R2, R3 and R4 is a group AlkP(X1)(X2R8)L where L is a linker group; and a metal complexes and/or salts thereof, coupled to a protein, peptide or carbohydrate. The conjugates are useful for imaging and in the treatment of abnormal cell disorders, such as in the treatment of tumours.
Patent CA-2060990-A1 (CA)
Inventor: FRIEDRICH MARC
IPC: B21B38/02
Filed: 1992-02-11
Abstract: Method for measuring a difficult-to-measure characteristic (X) of a continuously manufactured product, characterised in that:   - at least one easy-to-measure second characteristic (Y), whose variations are correlated with those of the said first characteristic, is chosen; - the said first characteristic is modified so as to bring it to a known predetermined reference state (X0), via a means acting on the product in a specific zone of the manufacturing line; - the second characteristic is measured, at least in the said zone; and - this measurement is processed in order to determine a variation of the said first characteristic relative to the said reference state (X).   Application to the measurement of surface evenness on a strip running continuously through a skin passrolling (temper (pass) rolling) installation. <IMAGE>
Patent CA-2061357-A1 (CA)
Title: Profile control in enhanced oil recovery
Inventor: MORGENTHALER LEE N
IPC: C09K8/502
Filed: 1992-02-17
Abstract: T 8h68 A B S T R A C T         PROFILE CONTROL IN ENHANCED OIL RECOVERY      Oil recovery method using polymer solutions in which highly permeable strata are made significantly less permeable while less permeable strata are not made significantly less permeable.  This is accomplished by heating more permeable strata by injection of hot fluids, and then injection of a crosslinkable vinyl aromatic-conjugated diolefin polymer and a temperature activated crosslinking agent.  A crosslinked gel is formed in the initially more permeable strata, permitting recovery of oil from the initially less permeable strata.