baber/WOPTO huggingface dataset:
Patent CA-2128054-A1 (CA)
Title: Pumped liquid oxygen method and apparatus
Inventor: MOSTELLO ROBERT A
IPC: F25J3/04
Filed: 1994-07-14
Abstract: ABSTRACT   A process and apparatus for producing a gaseous oxygen product at a delivery pressure so as to contain a low concentration of heavy impurities in which compressed and purified air is cooled in a main heat exchanger to near dew point temperatures and then introduced into an air separation unit designed to rectify the air into a liquid oxygen fraction. The air separation unit comprises high and low pressure columns operatively associated with one another in a heat transfer relationship by provision of a condenser-reboiler. The liquid phase of the air being separated becomes increasingly more concentrated in heavy impurities as it descends within the low pressure column so that liquid oxygen collected in the sump of the condenser-reboiler becomes concentrated in the heavy impurities and the liquid phase flowing into the sump contains a low concentration of the heavy impurities A product stream is withdrawn from the liquid phase before it reaches the sump and is pumped to the delivery pressure and then vaporized within the main heat exchanger. A purge stream of liquid oxygen from the slump is removed so that the impurity concentration level within the liquid oxygen does not reach its solubility limit.
Patent CA-2128452-A1 (CA)
Title: Anti-bacterial, insoluble, metal-chelating polymers
Inventor: VANDERLAAN DOUGLAS G
IPC: C08F220/28
Filed: 1994-07-20
Abstract: A soft contact lens which comprises a water-swollen gel of a polymer prepared by polymerizing one or more hydrophilic monomers such as 2-hydroxyethyl methacrylate, one or more cross-lining monomers, and a monomer that contains metal-chelating functionality such as an aminopolycarboxylic acid that contains a polymerizable olefinic group.
Patent CA-2132443-A1 (CA)
Title: Container with pressure vessel for the regeneration and storage of tennis balls
Inventor: ESKA PETER
IPC: A63B39/02
Filed: 1993-04-13
Abstract: (57) Abstract A container (1,1',28) has a pressure vessel for regenerating and storing tennis balls (21, 21') under a gas overpressure, preferably an air overpressure. The container has a bottom (3,20,35) and a pressure-tight lid (3',4,31,31') with an inlet valve (24,24') and a gas pump (8,8',34) link-able thereto. The gas pump (8) is constructively integrated inside the pressure vessel (2,30,30') or the container (1,1',28) and a removable mould (12) made of several mutually detachable parts (13, 14) is inserted into the pressure vessel (2). The mould contains mutually separated recesses (15,16) the size of tennis balls (21,21') interconnected by means of the inlet valve (24,24') in such a way that gas can flow from one into the other. The recesses (15,16) are located on the parts (13, 14) that constitute the mould (12) and which make up the total recesses (15,16) when they are assembled. An overpressure may be applied on the tennis balls (21,21') in the recesses ( 15,16) by means of the gas pump (8,8'). A pressure relief valve (8,8') and an outlet valve (6,6') are integrated in the lid (3, 3') of the container and are in communication with the pressure vessel (2,2') inside the container. 2
Patent CA-2132532-A1 (CA)
Title: Production of ethyltoluene
Inventor: CHU CYNTHIA T
IPC: C07C15/02
Filed: 1993-06-03
Abstract: Ethyltoluene is produced by ethylating toluene in the presence of a ZSM-5 catalyst of controlled acidity and diffusivity to produce an ethyltoluene isomer mixture which is high in the content of the meta isomer and very low in the ortho isomer. The weight ratio of the meta isomer to the para-isomer is at least 1:1, preferably at least 1.2:1 while the ortho isomer is kept below 1.5 %, preferably below 0.5 %. The product ethyltoluene may be dehydrogenated to form polymerization grade vinyl toluene.
Patent CA-2132595-A1 (CA)
Inventor: FISHBACK THOMAS L
IPC: C08G18/66
Filed: 1994-09-21
Abstract: A polyol composition is provided which when reacted with and organic isocyanate, has good flow characteristics and makes an all water blown rigid polyurethane foam having good dimensional stability at low core densities of 1.1 pcf to 2.0 pcf. The polyol composition has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less, an average functionality of 3.1 or greater, and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25°C, and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and an equivalent weight of greater than 130. The polyol composition also has water as the blowing agent, and further contains a blow catalyst, a delayed action gel catalyst, and preferably a cure catalyst and a surfactant.
Patent CA-2136298-A1 (CA)
Title: Method and apparatus for enhancing production of tio2
Inventor: GEBBEN VERNON D
IPC: C01G23/07
Filed: 1994-11-21
Abstract: A method and apparatus for producing TiO2 by reacting O2 and TiCl4 in a reactor tube wherein pressure fluctuations in the flow of fluids through the reactor tube are sensed and output signals are generated proportional to the sensed pressure fluctuations.          The flow of at least one of the TiCl4 or O2 is then varied through the reactor tube in response to predetermined pressure fluctuations so as to increase the efficiency of the reaction between TiCl4 and the O2. The efficiency of the reaction between O2 and TiCl4 in the reactor tube is achieved by a control apparatus operably connected to the reactor assembly which is capable of monitoring pressure fluctuations in TCl4 and O2 through the reactor assembly so that the flow of at least one of the TiCl4 or O2 can be varied in response to predetermined pressure fluctuations.   The control apparatus includes a sensor assembly, a signal conditioning unit and a signal processing unit.
Patent CA-2140525-A1 (CA)
Inventor: BROWN WILLIAM B
IPC: C09D7/00
Filed: 1993-07-22
Abstract: A method for the removal and recovery of paint overspray in a water wash spray booth is disclosed.  The method uses a circulating agitated dispersion of an organic solvent component in water which collects the paint overspray. The dispersion containing the overspray is permitted to phase separate into an organic phase and an aqueous phase. The organic phase is further treated such as by distillation to separate the paint solids from an organic solvent portion which contains the original organic solvent component and the organic solvents associated with the paint. The organic solvent portion can be recycled and reused in the circulating dispersion and the paint solids can be recovered for further use such as a filler for adhesives or can be disposed of.
Patent CA-2140865-A1 (CA)
Title: Antiproliferative oligomers
Inventor: CARDIN ALAN D
IPC: A61K31/74
Filed: 1993-07-16
Abstract: The oligomers of the present invention are polyureas or polyamides having a number average molecular weight of < 10,000. These oligomers are water-soluble, have a rigid backbone with a predictable anion spacing, and are pharmaceutically-ac-ceptable. The oligomers are useful for inhibiting the proliferation of smooth muscle cell.
Patent CA-2141770-A1 (CA)
Inventor: GARG DIWAKAR
IPC: C21D1/76
Filed: 1995-02-03
Abstract: A process for producing low-cost atmospheres suitable for decarburize annealing carbon steels from non-cryogenically generated nitrogen containing up to 1.5% residual oxygen by catalytically deoxygenationg a non-cryogenically generated nitrogen stream at low temperatures with a hydrocarbon gas and mixing the deoxygenated stream with an economical amount of hydrogen prior to introduction into the furnace for annealing.  The process includes the use of 1) hydrocarbon gas to convert residual oxygen to a mixture of carbon dioxide and moisture at low temperatures and 2) mixing the deoxygenated stream with a sufficient amount of hydrogen to maintain a pH2/pH2O ratio of at least 2 in the furnace.
Patent CA-2141810-A1 (CA)
Title: Amide derivatives
Inventor: CLIFFE IAN A
IPC: A61P25/20
Filed: 1993-07-22
Abstract: 2141810 9403444 PCTABScor01 Amide derivatives of formula (1) and their pharmaceutically acceptable salts (where a and b each represent 0, 1, 2 or 3 such that a + b = 0, 1, 2 or 3, the dotted line represents an optional double bond, A is an optionally substituted C1-2-alkylene chain, R  is mono or bicyclic aryl or heteroaryl radical, R1 is hydrogen or lower alkyl, R2 is an aryl, aralkyl, heteroaryl or heteroarylalkyl and -CONR3R4 represents a specified amide group) are 5-HT1A binding agents and may be used, for example, as anxiolytics.
Patent CA-2144622-A1 (CA)
Title: Mobile Radio Communication System Employing Time Division Multiple Transmission Scheme
Inventor: SUZUKI TOSHIRO
IPC: H04B7/26
Filed: 1995-03-14
Abstract: In a mobile radio communication system employing a time-division multiple transmission scheme, having a plurality of base stations and a plurality of personal stations, an arbitrary base station, when detecting a pilot signal transmitted from any master base station in the mobile radio communication system, acts as a slave base station which does not transmit its pilot signal but transmits and receives a common control signal to and from a personal station utilizing a frequency channel occupied by the pilot signal.  On the other hand, when not receiving the pilot signal, the base station searches for an available frequency channel, and acts as a master base station which transmits its pilot signal on the available frequency channel to occupy the frequency channel, and transmits and receives the common control signal to and from a personal station on that frequency channel.
Patent CA-2145785-A1 (CA)
Title: Over-travel actuation system
Inventor: ISAACS CLAUDIA A
IPC: F02N99/00
Filed: 1995-03-29
Abstract: A power tool having an engine, a throttle control cable, and an electric starter assembly with a user actuated start switch.   The start switch has an over-travel actuator section for moving the throttle control cable an over-travel distance.  The throttle control cable is connected to the throttle of the engine by an over-travel actuation member.   The over-travel actuation member is adapted to move the throttle and, when the control cable is moved the over-travel distance, actuate a compression release system of the engine.
Patent CA-2146110-A1 (CA)
Inventor: HEINZ NICHOLAS
IPC: E01F8/00
Filed: 1995-03-31
Abstract: A sound barrier fence includes a wall having a series of adjacent elongate boards joined with overlapping sealed joints. The first and last boards in the series define first and second generally parallel side edges respectively.  The series of boards further defines a lower edge extending between the first and second side edges.  At least one rail is attached to the wall and extends between the first and second edges.  A skirt extends between the first and second side edges and below the lower edge.   First and second generally parallel posts are mounted in the ground.  The first post has a lengthwise groove which is adapted to receive the first edge of the wall, and the second post has a lengthwise groove which is adapted to receive the second edge of the wall.
Patent CA-2146431-A1 (CA)
Title: Insulin-like peptide
Inventor: MCKENZIE MAUREEN A
IPC: C07K14/395
Filed: 1993-10-05
Abstract: A purified insulin-like protein (ILP) isolated from Saccharomyces cerevisiae is disclosed. The ILP has a molecular weight of approximately 6.4 kilodaltons and the amino acid sequence of the 22 amino terminal residues of the protein has been deter-mined. Computer-assisted molecular graphics analysis of ILP illustrates the similarity of the sequenced portion to vertebrate in-sulin A-chains.
Patent CA-2147840-A1 (CA)
Title: Fabric softeners containing dyes for reduced staining
Inventor: WAHL ERROL HOFFMAN
IPC: C09B67/44
Filed: 1993-10-20
Abstract: The present invention relates to fabric softening compositions providing an increase in the ease of stain removal on fabrics such as cottons and polyesters, comprising: (a) from about 3 % to about 50 % by weight of fabric softener; and (b) from about 1 ppm to about 1,000 ppm of a stable dye system, whereby the dye system comprises selected water-soluble Liquitin?dyes.
Patent CA-2149409-A1 (CA)
Title: Multilayered textile web for forming flexible containers, tents, awnings, protective suits and the like
Inventor: HAAGER VOLKER
IPC: B32B27/12
Filed: 1993-11-09
Abstract: The multilayer web of fabric proposed for the fabrication of flexible containers, tents, tarpaulins, protective clothing, etc., has a woven-fabric layer (5), a rubber layer (6) on one side of the woven-fabric layer (5) and a layer (7) of fluorinated-hydrocar-bon polymer on the other side of the woven-fabric layer (5). In order to obtain a particularly strong yet soft web of fabric, the lay-er (7) of fluorinated-hydrocarbon polymer is between two layers of rubber (6).
Patent CA-2150023-A1 (CA)
Title: Cellulose wad laminated product
Inventor: LAURENT PIERRE
IPC: B31F1/07
Filed: 1993-11-22
Abstract: The cellulose fibre tissue product (1), for use as handkerchief or napkin, is made by at least two ply cellulose pads (1a,1b). These are cut to required form and joined together along a peripheral border (3), by adhesive. The join presents a minimal resistance to delamination of 1 g/cm., the border area being less than 50% of total tissue surface area. The adhesive may be on the border of each ply, distributed as discontinuous spots (5). Alternatively, the borders may also be embossed, like waffles. The several ply may have differing composition.
Patent CA-2150102-A1 (CA)
Title: Semi-rimless eyeglass frame assembly
Inventor: METCALFE RICHARD T
IPC: G02C5/00
Filed: 1993-11-19
Abstract: Semi-rimless and rimless eye-glass frame assemblies. The semi-rimless frame assembly (10) includes an eyewire (12) extending along the upper (13) and side (14) edges of a lens (15), a nose bridge (16), and a pair of endpiece assemblies (19). The endpiece assemblies (19) each include an eyewire channel (30) and a lens channel (20) for receipt of the eye-wire (12) and lens (15). The end-piece assemblies (19) include through holes (21) on each side of lens chan-nel (20) which are aligned with aper-tures (not shown) in lens (15) for re-ceipt of means to secure lens (15). Each endpiece assembly (19) is pivotally connected to each temple (23).
Patent CA-2150187-A1 (CA)
Title: In-line roller skate with axles that can be positioned at two different levels
Inventor: CAREGNATO PAOLO
IPC: A63C17/06
Filed: 1995-05-25
Abstract: An in-line roller skate including a supporting frame that has two spaced side walls and in-line wheels arranged therebetween by means of pivots.  The side walls have a plurality of pairs of oppositely arranged seats for detachably accommodating a respective pivot. There are two supporting end elements for each pivot, which are axially offset with respect to the pivot and can be slidingly inserted, both in an upright position and in an inverted position, starting from the lower edge of the side walls, in a respective pair of seats,  so as to allow to place the respective pivot in two positions at different levels.
Patent CA-2152653-A1 (CA)
Inventor: MILLER RICHARD E
IPC: C09D11/17
Filed: 1995-06-26
Abstract: A multiple coloring composition system for use on non-porous surfaces is disclosed whose coloring effect is changed upon treatment with a second coloring composition, once the second coloring composition has been deposited over the undercolor coloring composition.  The multiple ink system comprises:     (a)  an undercolor aqueous coloring composition comprising a film forming resin and an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater and/or by a reducing agent; and (b)  an overcolor aqueous coloring composition comprising a film forming resin, a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and/or a reducing agent, a base in an amount sufficient to yield a pH of the overcolor composition of about 10 or greater, and/or a reducing agent.
Patent CA-2157505-A1 (CA)
Title: Metal container capable of withstanding internal overpressure
Inventor: SCHREPFER BERND
IPC: B65D8/00
Filed: 1994-02-23
Abstract: Proposed is a metal container (I) capable of withstanding internal over pressure, the hollow vessel holding the contents having an essentially cylindrical wall and two outwards-curved ends (6a, 6b). At least one of the ends (6a or 6b) has a central bulge (8a or 8b) which extends out beyond the curvature of the end (7a or 7b). At least one connecting pipe (5) is fitted, preferably in bulge (8a), and a rated break point is incorporated in at least one of the ends (6a or 6b), the break point consisting of a notch (10) in the outer surface of the end. An important design feature of the container is that the notch (10) forming the rated break point is of varying depth (12, 14), the maximum depth (12) being in the region (11) of the end (6a or 6b) which undergoes the greatest deformation when subjected to a specified internal pressure which exceeds the permitted service pressure.
Patent CA-2158899-A1 (CA)
Title: Refrigeration system with pulsed ejector and vertical evaporator
Inventor: PINCUS STEVEN JAY
IPC: F25B41/06
Filed: 1995-09-22
Abstract: A refrigeration system involving a nozzling device which fully opens and closes to create high velocity bursts of unrestricted refrigerant flow through the system, wherein a pulsed ejector is coupled with the nozzling device and refrigerant from the evaporator is recirculated back to the pulse ejector, wherein the evaporator is vertical and its tubes are substantially entirely wetted interiorly during operation, wherein the condenser is vertical and its tube surface area are substantially entirely functioning as condensing heat transfer surfaces, wherein an ejector is associated with the condenser and refrigerant from the condenser is recirculated back to the condenser ejector, and also wherein internal ejector recirculation effects occur within the evaporator and condenser as a result of pulse flow events.
Patent CA-2161858-A1 (CA)
Inventor: YOSHIDA NAOKI
IPC: B41J15/04
Filed: 1995-10-31
Abstract: This invention presents a recording unit using  roll paper, especially a unit and method for easily and securely detecting a terminal end of roll paper rolled around a core inside a color printer.  A roll paper terminal end detecting unit and method is provided for detecting the terminal end of roll paper rolled around the core inside the roll paper type recording unit, which is characterized in that the outside face of said core is darker than the roll paper.  A sensor is provided for detecting the intensity of reflected light, a pinch roller turning in contact with the roll paper surface and a spring for pressing the said pinch roller against the surface of roll paper, and for detecting the terminal end of roll paper by the change in the intensity of reflected light.
Patent CA-2162293-A1 (CA)
Title: Process and autoclave system for size reducing and disinfecting contaminated hospital refuse
Inventor: ROLAND ROLF E
IPC: B09B3/00
Filed: 1994-05-06
Abstract: A method and apparatus for comminuting and sterilizing infectious waste wherein the size reduction processes take place within the same sealed container within which the sterilization through vacuumization and saturated steam pressurization takes place.  Between the vacuum cycle and the high-pressure steam cycle there is interposed an intermittent steam pressurization step to atmospheric pressure. The comminution of infectious waste material is carried out by a series of cutting, crushing and shearing elements which are arranged in a compact, stack-like fashion in a vertical arrangement with the bearing elements, clutch, gear and motor located outside the autoclave container and detachable therefrom, which allows ready access to the shredder stack which can be removed and exchanged in fully assembled fashion.
Patent CA-2163252-A1 (CA)
Title: Studded web for building purposes
Inventor: JABLONKA DEITER
IPC: E02D31/02
Filed: 1995-03-16
Abstract: A strudded web for building purposes from a sheet or plate made from high-tenacity material, preferably high density polyethylene (HDPE) has studs (2) shaped out of the sheet or plate, and has at least one studless marginal strip (3) running substantially parallel to one of its edges.  The marginal strip is at least partly reinforced with reinforcing means fixed thereto, which are embedded in the marginal strip during the manufacturing process of the studded web.
Patent CA-2163707-A1 (CA)
Title: Ultraviolet Radiation Monitoring Device and Use Thereof
Inventor: HOFFMANN DONALD
IPC: G01J1/50
Filed: 1995-11-24
Abstract: An  ultraviolet radiation monitoring kit comprising at least one first substrate and at least one second substrate,  the second substrate being capable of being closely associated with at least one first substrate, the first substrate having an indicator area comprising a chromogenic composition, the chromogenic composition comprising (a) the colored reaction product of a chromogen and a color developer, the colored reaction product being capable of changing color when exposed to ultraviolet radiation, or (b) a substantially colorless mixture of a chromogen and a color developer capable of reacting to form color when exposed to ultraviolet radiation, the second substrate bearing a reference color chart, the reference color chart comprising at least one reference color corresponding to time exposure to ultraviolet radiation, such that comparison of the color developed by the chromogenic composition upon exposure to ultraviolet light with a reference color provides an indication of the time and degree of exposure to ultraviolet radiation.
Patent CA-2166795-A1 (CA)
Title: Composition and process for desmutting and deoxidizing without smutting
Inventor: CARLSON LAWRENCE R
IPC: C23G1/02
Filed: 1994-06-30
Abstract: A chromium and ferricyanide free aqueous deoxidizer/desmutter for aluminum and magnesium alloys contains nitric acid, ferric ions, persulfate, and molybdate and preferably also sulfate, fluoride, and ethoxylated acetylenic diol surfactant.
Patent CA-2168928-A1 (CA)
Title: Sprinkling Seat Structure for a Lawn
Inventor: WANG KING-YUAN
IPC: B05B1/16
Filed: 1996-02-06
Abstract: A  sprinkling seat structure for a lawn.  including  a circular  frame  seat, a connecting disk and  a  sprinkling rotary  cover. The circular frame seat includes a  circular peripheral   frame  and  a  central   water-outgoing   seat connected  with  the  peripheral frame  by  several  radial connecting ribs. A connector is disposed on one side of the water-outgoing  seat for connecting with  a  water-incoming tube.  The  water-outgoing  seat is formed  with  a water-outgoing opening for communicating with the connector.  The connecting  disk is formed with a central  hollow  downward projecting  fixing boss. A free end of the fixing  boss  is formed  with  an inclined face having  an  annular  groove.          Several  circular holes are formed around the fixing  boss.     The  sprinkling rotary cover has a central sprinkling  dome formed with multiple sprinkling meshes. Multiple sprinkling holes  with various patterns and two opposite  close  holes are  disposed around the sprinkling dome. The rotary  cover is  formed with a Peripheral inclined face having  multiple sprinkling meshes. Multiple circular surrounding walls  are disposed  on  inner face of the rotary  cover  respectively corresponding  to  the sprinkling holes. A  first  C-shaped surrounding  wall open to inner side and a second  C-shaped surrounding  wall open to outer side are disposed on  inner face of the rotary cover respectively corresponding to  the first  and  second close holes. The circular  and  C-shaped surrounding walls are connected by connecting walls.