baber/WOPTO huggingface dataset:
Patent CA-2053929-A1 (CA)
IPC: F25B45/00
Filed: 1991-10-22
Abstract: ABSTRACT OF THE DISCLOSURE          A method and apparatus for recovering and purifying refrigerant contained in a refrigeration system has a first mode of operation wherein refrigerant is withdrawn from the system being serviced, compressed, condensed and delivered in liquid form to a refrigerant storage means.  The pressure ratio across the recovery compressor is monitored, and, when the pressure ratio exceeds a value above which the compressor may be adversely affected withdrawal of the refrigerant from the refrigeration system is terminated.  The system is then operated in a closed, cooling mode wherein refrigerant recovered from the system and stored in the storage means is withdrawn therefrom by the compressor, compressed condensed, and expanded and returned to the storage means to thereby lower the temperature and pressure of the storage means and the refrigerant contained therein.  Means for purifying the withdrawn refrigerant are located upstream from the compressor suction port so that refrigerant purification takes place during all modes of operation.  When the temperature in the refrigerant storage cylinder falls to a predetermined level the system is returned to the recovery mode.  During the second recovery cycle, because of the substantially lower temperature in the recovery system, the refrigerant storage cylinder effectively serves as a condenser.            The system may be operated in a liquid recovery cycle wherein liquid refrigerant is delivered directly to the storage means. The system is shifted from liquid recovery to vapor recovery responsive to, either, a decrease in liquid level increase in the storage means, or, several system control parameters. Apparatus for sampling the purity of refrigerant flowing through the recovery system is provided.
Patent CA-2055500-A1 (CA)
Title: Expression of polypeptides
Inventor: MEADE HARRY
IPC: C12N15/85
Filed: 1991-02-22
Abstract: This invention relates to processes and intermediates for improving the level of production of a desired polypeptide in a recombinant host whose genome has integrated into it an island of expression comprising in the 5' to 3' direction, a 5' flanking region, the heterologous polypeptide encoding sequence and a 3' flanking region. The island of expression of this invention permits the expression of the integrated heterologous DNA sequence to be substantially dependent on its copy number and to be substantially independent of its position of integration in the host genome.
Patent CA-2055781-A1 (CA)
Inventor: CHOW GARY
IPC: G11B33/04
Filed: 1991-11-18
Abstract: ABSTRACT      The present invention relates to a compact disc storage device comprised of a top and bottom support plate; a lifting plate to which is radially connected a handle both of which lay flush within the top support plate at rest and the lifting plate freely able to slide up and down; a pivot column which connects axially to the support plates and around which may rotate a column to which is radially connected multiple linear dimensioned receptacles which may store compact disc cases such that the album faces of the cases may be clearly visible to the user; and Pins axially connected to the support plates thereby affording support in the event that multiple units of the device are stacked up on one another as per design intent. This device permits compact disc title selection to be based on album face recognition thereby making visual selection more convenient for the user, as well as providing device portability with a convenient amount of storage capacity. The device will be made of hard resilient plastic or any material of similar properties.
Patent CA-2056616-A1 (CA)
Inventor: FROST PETER LEWIS JOHN
IPC: G02B6/44
Filed: 1990-06-01
Abstract: Un organisateur d'épissures comporte une caisse de groupement ayant une pluralité de gabarits d'enroulement (14, 15) qui règlent le rayon de courbe minimum des fibres, une fente destinée à retenir une épissure, une enceinte dans laquelle sont introduites des boucles de fibre enroulée qu'on laisse se déployer de sorte qu'elles soient retenues par l'élasticité de la fibre elle-même, ainsi qu'une pluralité de voies de guidage (23, 24, 25) qui permettent aux fibres d'entrer et de sortir de l'organisateur par chaque coin de la caisse.
Patent CA-2058117-A1 (CA)
Inventor: PATTEN WILLIAM
IPC: C08G18/40
Filed: 1991-12-19
Abstract: A process for manufacture of molded, high resiliency, polyurethane foam substantially free of volatile organic blowing agents comprising feeding at least three streams into a mixing device to form a reaction mixture, wherein a first stream contains (i) a polyol, (ii) water, (iii) a catalyst, (iv) a surfactant; a second stream contains an organic polyisocyanate; and a third stream contains (i) water, (ii) a crosslinking/extending agent, and (iii) a process/foam modifier.
Patent CA-2058393-A1 (CA)
Title: Photochromic benzothioxanthone oxides, process for their preparation and the use thereof
Inventor: FISCHER WALTER
IPC: G03F7/095
Filed: 1991-12-31
Abstract: Photochromic benzothioxanthone oxides, process for their preparation and the use thereof Abstract of the Disclosure Compounds of formula I or III or mixtures thereof                       (I), wherein R is unsubstituted C6-C14aryl or C6-C14aryl which is substituted by C1-C12alkyl,C1-C12alkoxy, C1-C12alkylthio, phenyl, benzyl, -CN, -CF3, halogen or -COOR3, x is 1 or 2, and R1 is H, linear or branched C1-C12alkyl, C2-C12alkenyl or C2-C12alkynyl, C7-C16aralkyl, C8-C16alkaralkyl, -CH2COOR3 or C1-C12acyl, wherein R3 is H, C1-C18alkyl, cyclohexyl, cyclopentyl, phenyl, C1-C12alkylphenyl, benzyl or C1-C12al-kylbenzyl, are reversible photochromic systems which can be used for contrast formation, light absorption or for the reversible optical storage of information.
Patent CA-2058798-A1 (CA)
Title: Electrolyte material and light modulation devices using the same
Inventor: EID BERNARD A G
IPC: G02F1/1506
Filed: 1992-01-06
Abstract: Abstract of the Disclosure This invention is directed to an electrolytic material for use in light modulation devices.  The material consists essentially of four components:      (1)  at least one organic solvent;      (2)  at least one salt of an electrodepositable metal;      (3)  at least one organic acid; and (4)  at least one salt of a non-electrodepositable metal which facilitates the dissolution of the salt of the electrodepositable metal.
Patent CA-2060857-A1 (CA)
Title: Process for the aromatization of dry vegetable matter
Inventor: VOYTON RONALD A
IPC: A23L27/00
Filed: 1992-02-07
Abstract: Abstract of the Disclosure Process for the aromatization of dry comminuted vegetable matter wherein particulated micro-encapsulated flavour is intimately mixed with a fat, an oil and/or an emulsifier till its particles reach by adhering to each other a mean size of at least 150 µm and the resulting product is added to the dry comminuted vegetable matter.
Patent CA-2062586-A1 (CA)
Title: Sock with an integrally formed pocket
Inventor: DEL VALLE MAS MARIA E
IPC: A41B11/00
Filed: 1992-03-10
Abstract: SEK/4.333 A SOCK WITH AN INTEGRALLY FORMED POCKET     Abstract of the Disclosure A sock having a cuff portion with an inner and outer layer disposed in overlying relation and including a pocket integrally formed therebetween having an opening near a top edge of the cuff.  A seam extending downwardly on opposite sides of the opening and along a bottom of the cuff defines the boundaries of an interior of the pocket.   A hook and loop-type fastener attached on opposite, opposing surfaces of the pocket's interior, adjacent the opening, serves to releasably secure the opening in a closed, sealed position.
Patent CA-2062805-A1 (CA)
Title: Adhesive dressings
Inventor: RAWLINGS DAVID A
IPC: A61F13/00
Filed: 1990-08-01
Abstract: A conformable dressing such as a first-aid dressing or a ward dressing comprises a polymeric foam absorbent layer (2) having a liquid impervious moisture vapour permeable backing layer (3) and on the body facing surface, a discontinuous layer of adhesive (4), the thickness of the absorbent layer at the margins (22) of the dressing being substantially less than that of the layer between the margins (21). The adhesive may be applied directly to the foam or may be applied to an intermediate discontinuous layer (5) such as a polymer net which itself is laminated or bonded to the foam absorbent layer.
Patent CA-2066981-A1 (CA)
IPC: F16K15/03
Filed: 1992-04-24
Abstract: A top-entry  check valve  having  a  seat,  cage,  disc  and removable bonnet utilizes projections to prevent movement of the seat,  cage and disc in the downstream direction.   An annular shoulder in the valve body prevents movement of the seat, cage and disc in the upstream direction.  The disc has a hinge pin which is cradled in hinge pin supports of the cage to hold the disc in place.  Removal of the bonnet allows access to the valve chamber for replacement of the seat, cage or disc.
Patent CA-2068783-A1 (CA)
Title: Snap-fit button
Inventor: WATANABE HIROKAZU
IPC: A44B17/00
Filed: 1992-05-15
Abstract: A snap-fit button comprising: a button body hav-ing on its front surface an ornamental; a snap member; a caulking member with which the button body and snap member are adapted to be caulked; a locking ring hav-ing on and along its outer peripheral portion a ridge and attached to a flange of the caulking member; a socket having an aperture for receiving the locking ring and having a taper diverging from an edge of the aperture toward a back surface of the button body, the socket being secured to the back surface of the button body; and a ring-snape spring disposed in the socket for resiliently engaging the locking ring.
Patent CA-2069374-A1 (CA)
Title: Synthesis of 19-nor vitamin d compounds
Inventor: DELUCA HECTOR F
IPC: C07F7/18
Filed: 1992-05-25
Abstract: A convergent synthesis of 19-nor-vitamin D compounds, specifically 19-nor-1 alpha ,25-dihydroxyvitamin D3, is disclosed. The synthesis can also readily be utilized for preparing other 1 alpha -hydroxylated 19-nor-vitamin D compounds. The key step in the synthesis is a suitable application of Lythgoe's procedure i.e. a Horner-Wittig reaction of the lithium anion of a phosphine oxide with a Windaus Grundmann ketone to give, after any necessary deprotection, the desired 19-nor-vitamin D compound.
Patent CA-2074884-A1 (CA)
Title: Iv administration set infiltration monitor
Inventor: SORICH RICHARD A
IPC: A61M5/00
Filed: 1992-07-29
Abstract: ABSTRACT    An apparatus for determining whether an IV infusion.set has infiltrated the tissue of a patient includes a pump for pumping fluid through the IV set into the patient and a pressure transducer operably engaged with the IV set between the pump and patient.  The pressure transducer is electrically connected to a microprocessor,  and the microprocessor is electrically connected to the motor of the pump to control the pump to alternately withdraw from and infuse into the patient a predetermined volume of fluid.    This predetermined volume of fluid is withdrawn from the patient by the pump at a preselected withdrawal pressure, while the`pump infuses the predetermined volume of fluid into the` patient  at  a  preselected  infusion  pressure.    The microprocessor measures both the time period for infusing the predetermined  volume  of  fluid  and  the  time  period  for withdrawing the predetermined volume of fluid.   Based upon these time periods, the microprocessor evaluates whether the IV set has infiltrated the patient's tissue.     PATENT:  10700.155
Patent CA-2079557-A1 (CA)
Inventor: NIIHARA KAORU
IPC: A61F13/476
Filed: 1992-09-30
Abstract: An absorbent article, such as a sanitary napkin, having flaps that   have   inwardly-folded   pleats   that   provide   zones   of differential extensibility for relieving the stresses that develop in the flaps when the flaps are folded down along the edges of crotch of the wearer's undergarments is provided.
Patent CA-2081321-A1 (CA)
Title: Improved method for solute transfer between solid and liquid phases
Inventor: BOWMAN MARTIN P
IPC: C02F1/58
Filed: 1991-05-02
Abstract: A method is provided for treating liquid containing known solutes which comprises delivering the liquid into a partly above ground level reservoir (10) containing a pervious treatment medium (23), the reservoir (10) being lined with a material (20) impervious to the liquid to prevent leakage, maintaining intimate contact between the liquid and the treatment mud for a period sufficient to reduce selected solutes to predetermined levels.
Patent CA-2081662-A1 (CA)
Inventor: MARTIN CHARLES R
IPC: G01N33/10
Filed: 1991-04-22
Abstract: Dispositif d'alimentation qui sépare et oriente les graines et autres substances particulaires à surface comparativement lisse et les livre à une destination désirée.  Le dispositif comprend un tambour rotatif horizontal (2) muni d'une surface intérieure dans laquelle est découpée une rainure hélicoïdale (6) pour orienter les particules de forme ellipsoïdale et les faire avancer vers les ouvertures de ramassage (8) à l'intérieur du tambour (2).  Un reniflard (15) expose en alternance les ouvertures (8) à la pression ambiante et à une pression vacuométrique (13) pour ramasser les particules individuelles et les déposer à l'endroit désiré (21).
Patent CA-2084425-A1 (CA)
Title: One step synthesis of methyl t-butyl ether from t-butanol using fluorophosphoric acid-modified zeolite catalysts
Inventor: KNIFTON JOHN F
IPC: B01J29/08
Filed: 1992-12-03
Abstract: ONE STEP SYNTHESIS OF METHYL t-BUTYL ETHER FROM t-BUTANOL   USING FLUOROPHOSPHORIC ACID-MODIFIED ZEOLITE CATALYSTS                       (D#81,189-F) ABSTRACT OF THE DISCLOSURE         A method is disclosed wherein t-butanol is reacted with methanol in a reaction zone in one step to provide methyl tert-butyl ether and the improvement in accomplishing the reaction which comprises: a.  Using a catalyst consisting of a crystalline aluminosilicate faujasite Y-type zeolite which has been treated with a fluorophosphoric acid; b.  continuously contacting said t-butanol and methanol in a molar amount of about 0.1 to 10 moles of methanol per mole of t-butanol with said catalyst at a temperature of about 20°C to about 250°C and a pressure of about atmospheric to about 1000 psig to obtain the methyl tert-butyl ether product.     CLK:pg CK\81189.app
Patent CA-2091200-A1 (CA)
Title: Topical composition for relieving aches and pains
Inventor: ARORA VASU D
IPC: A61K36/63
Filed: 1993-03-08
Abstract: Abstract of the Disclosure A composition comprising approximately equal proportions by volume of wintergreen oil, olive oil and/or oil of Eucalyptus and alcohol has an analgesic effect in treating aches and pains when rubbed or massaged on skin covering tissue from which such aches or pains emanate.
Patent CA-2093010-A1 (CA)
Title: Multi-position exercise bench
Inventor: OSWALD CLIFFORD J
IPC: A63B23/04
Filed: 1991-10-01
Abstract: A multi-position exercise bench convertible between a chair-like configuration for supporting a user in a seated position with back support (402), and a bench-like configuration for supporting the user in a reclining position. Three pivotally interconnected bench portions can be configured with the front (200) and center (300) bench portions substantially coplanar and the rear (400) bench portion forming a back support (402), or with the rear (400) and center (300) bench portions substantially coplanar and in a reclined position.
Patent CA-2093825-A1 (CA)
Title: Proanthocyanidin polymers having antiviral activity and methods of obtaining same
Inventor: TEMPESTA MICHAEL S
IPC: A61K31/765
Filed: 1991-10-10
Abstract: The present invention provides for proanthocyanidin polymers with significant antiviral activity. The proanthocyanidin po-lymers can be chemically synthesized or can be isolated from a Croton or a Calophyllum plant species. The present invention en-compasses methods of using proanthocyanidin polymers in treating warm-blooded animals, including humans, infected with par-amyxovaridae such as respiratory syncytial virus, orthomyxovaridae such as influenza A, B and C, and herpes viruses such as Herpes Simplex virus.
Patent CA-2094046-A1 (CA)
Title: Lithium secondary battery
Inventor: MURATA KAZUO
IPC: H01M10/0565
Filed: 1992-08-18
Abstract: Abstract of the Disclosure A lithium secondary battery comprising a positive electrode (3),  an electrolyte layer  (2)  composing of a solid polymer electrolyte, and a negative electrode (1) using metallic lithium or lithium alloy as an active material.  In the battery of this invention,  the electrolyte layer  (2)  comprises at least two layers in which one layer  (21)  in contact with the negative electrode is composed  of an electrolyte hard to react with a negative active material and the other layer (22) is composed of an electrolyte easy to react with the negative active material.          In the battery of this invention, a formation of dendrite of lithium in the negative electrode is restrained by the one layer (21) and a large electric conductivity is maintained and a growth of the dendrite is restrained by the other layer (22).
Patent CA-2094967-A1 (CA)
Title: Composite road safety slip rails made from metal and reinforced round wood and their methods of manufacture
Inventor: DUYCK DANIEL
IPC: E01F15/04
Filed: 1993-04-27
Abstract: Composite slip rails for road safety made from round wooden bars reinforced with iron and comprising posts made from sectional iron and supporting each one a spacer carrying a horizontal guard rail consisting of previously slotted round wooden beams reinforced with embedded metal fishplates providing for the cohesion of the wood and the connection of the elements.
Patent CA-2095202-A1 (CA)
Title: Ring seal packer
Inventor: DUHN JAY C
IPC: E21B17/06
Filed: 1993-04-29
Abstract: RING SEAL PACKER            Abstract of the Disclosure A ring seal packer is used for sealing the inside of a specified diameter of API tube.  The cylindrical body  of  the  ring  seal  packer  has  a  pair  of circumferential grooves and a pair of rigid seal rings are provided in each such groove.   The two rings collectively occupy substantially the entire length of the groove, with no more than a small clearance at the ends for forming a small area orifice through which fluid may flow.  Each of the rings has an outside diameter larger than the inside diameter of a specified size of API tube.   A longitudinal slot in the ring permits it to collapse to a diameter that fits into the tube as it is pushed into the well.  A tang and notch arrangement keeps the rings from rotating relative to each other so that the slots are kept out of alignment. The ring seal packer does not use any elastomeric sealing materials.
Patent CA-2096530-A1 (CA)
Title: Method and apparatus for screening microscopic cells utilizing light scatter techniques
Inventor: RUSSELL THOMAS
IPC: G01N33/50
Filed: 1991-11-22
Abstract: ABSTRACT        A method and apparatus for performing screening of one or more cell groups of interest obscured by a cell population  utilizing  at  least  one  light  sensing parameter.  The cell group of interest such as a subset of  a  white  blood  cell  population  is  enumerated  by utilizing microspheres having monoclonal antibodies bound thereto to modify the sensed characteristics of specified cells to differentiate the cell group of interest from the obscuring cell population.  A whole blood sample or portion thereof also can be measured first, then have specified cells deleted therefrom to enable the cell group of interest to be sensed in an area in which it would otherwise have been obscured by the deleted cells. The sample portion is again measured and compared to the first measurement to differentiate the cell group of interest.
Patent CA-2096605-A1 (CA)
Inventor: HAYDEN ALFRED S
IPC: C22B1/02
Filed: 1993-05-19
Abstract: Refractory sulfidic silver ore which is not amenable to cyanide leaching is formed into an aqueous slurry and oxidized at elevated temperature, usually about 150 to 250°C, in the presence of an oxidizing agent, usually oxygen, and in the presence of about 30 to about 160 g/L zinc.  Zinc present in the above range results in increased extractability of silver from the oxidized residue by cyanide leaching.
Patent CA-2099788-A1 (CA)
Title: Ultra pure silicon carbide and high temperature semiconductor processing equipment made therefrom
Inventor: PICKERING MICHAEL A
IPC: H01L21/22
Filed: 1993-07-05
Abstract: ULTRA PURE SILICON CARBIDE AND HIGH TEMPERATURE SEMICONDUCTOR PROCESSING EQUIPMENT MADE THEREFROM            ABSTRACT OF THE DISCLOSURE    Bulk, free-standing SiC is produced by CVD having a total impurity content of about 5 ppm or less by weight, preferably less than about 3.5 ppm.  Impurity elements Al, As, B, Ca, Cd, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Ni, P, Sb, Ti and Zr are measured by glow discharge mass spectroscopy.  The deposition process was performed under very carefully controlled conditions and utilizing special measures or techniques for controlling the O2 content of the H2 used in the CVD and keeping the deposition chamber free of particulate matter.  The SiC produced is particularly suitable for applications where high purity is desired, such as high temperature semiconductor processing furnace furniture (e.g. wafer boats, process tubes, cantilever paddles or rods, and dummy wafers) and semiconductor wafer handling equipment (e.g. susceptors, vacuum chucks and transport rings).
Patent CA-2100021-A1 (CA)
Inventor: GANS LAWRENCE S
IPC: H01Q25/00
Filed: 1993-07-07
Abstract: A space duplexed beamshaped microstrip antenna system including transmit and receive antennas, each of which has two groups of interleaved arrays.  The array groups are slanted in opposite directions and each is fed from opposite corners of the antenna so that each group utilizes its entire assigned reduced width aperture to create the required beam contours for two beam.   To achieve frequency and temperature compensation, one of the antennas is made up of forward firing arrays and the other of the antennas is made up of backward firing arrays.
Patent CA-2101049-A1 (CA)
Title: Dosing apparatus for sterile and/or pharmaceutical solutions
Inventor: CASAMIRA CAMPS PEDRO
IPC: A61M5/315
Filed: 1991-11-22
Abstract: The dosing device for sterile and/or pharmaceutical solutions is comprised of a laminar body (10) which contains the solution, presenting a top neck wherein a tubular nozzle (20) may be inserted and which is covered by a cup (30) having a weakened area, with a fluted ring (40) which interconnects said parts. The device may be coupled to a rigid support (50) which has a base slidable on an axis in order to apply the solution by manually pressing on the base of said support.