baber/WOPTO huggingface dataset:
Patent CA-2066701-A1 (CA)
Title: Process for preparing cyclic polyoxymethylene
Inventor: YAMAMOTO KAORU
IPC: C08G2/28
Filed: 1991-08-15
Abstract: ABSTRACT    Cyclic polyoxymethylene having a number-average molecular weight of 500 to 5,000 is obtained by solid state cyclization reaction of an alkalidegradative linear oxymethylene homopolymer in the presence of a medium containing a cationic catalyst.    The cyclization is effected at 10 to 150 ° C for 1 to 500 minutes in an organic liquid medium.    The reaction mixture obtained by the cyclization is treated with an alkaline medium to hydrolyze and remove away unreacted linear polyoxymethylene homopolymer, and isolate the cyclic polyoxymethylene.    The product has a sharp molecular weight distribution and is useful as a resin improver.
Patent CA-2069702-A1 (CA)
Inventor: YAMAMOTO KEISUKE
IPC: B81B3/00
Filed: 1992-05-27
Abstract: A micro-displacement element comprises a unimorph cantilever having a piezoelectric thin film (4), a pair of electrodes (3,5) between which the piezoelectric thin film is sandwiched, and an elastic thin film (2). One end of the cantilever is supported by a support, and the other end thereof is provided with a probe (6). The micro-displacement element can be used particularly an array of plural elements, for an information processing apparatus in which the elements face a recording medium such that an information recording pulse voltage or an information reproducing bias voltage can be applied between the probes and the recording medium. <IMAGE>
Patent CA-2071164-A1 (CA)
Title: Fiber optic backlighting panel and zig-zag process for making same
Inventor: MYERS J MICHAEL
IPC: G02B6/00
Filed: 1992-06-12
Abstract: An improved fiber optic backlighting panel provides uniform and increased background illumination in devices, such as rubber keypads, membrane switches, liquid crystal displays, rigid-panels or the like. The fiber optic panel comprises a light source and a layer of optical fibers arranged adjacent each other, which transmit light to different locations throughout the device, thereby providing efficient background illumination relative to the amount of light beamed in.      The optical fibers are selectively terminated at these locations by forming a series of angular cuts through the layer of optical fibers with a laser, according to a predetermined geometric zig-zag or sawtooth pattern stored in a computer memory. The zig-zag pattern extends across the entire length and width of the panel such that each optical fiber is cut only once to provide increased and consistent illumination throughout the device. In one specific embodiment, for application in liquid crystal displays, a layer of foam is used to diffuse the light to provide uniform illumination.
Patent CA-2072358-A1 (CA)
Title: Liquid flow apparatus
Inventor: MUIR ANDREW R H
IPC: E03F5/10
Filed: 1990-12-20
Abstract: The invention relates to apparatus (1) for providing a substantially uniform flow of liquid, in this case sewage, comprising a plurality of chambers (2 and 3) one of which (2) is adapted for connection with a source (not shown) of sewage and another (3) of which is adapted to receive liquid from the one chamber (2), both chambers (2 and 3) having a respective outlet (4 and 5) for liquid arranged so that liquid flow therethrough is combined to provide a maximum desired flow rate from the chambers (2 and 3). The two chambers (2 and 3) together comprise a vessel or tank (6), the other chamber (3) being separate from the one chamber (2) and defined by wall means in the form of walls (7 and 8) interiorly of the one chamber (2). The other chamber (3) is thus wholly within the chamber (2).
Patent CA-2074011-A1 (CA)
Title: Rack for suspending and sealing bags
Inventor: GRAVELL GLEN
IPC: A47F13/08
Filed: 1992-07-16
Abstract: ABSTRACT OF THE DISCLOSURE           It is often inconvenient to store bags of spices, potato chips, etc., particularly once the bags have been opened.  Accordingly, there is disclosed herein a rack for suspending and sealing bags.  The rack includes a plurality of horizontal clamps adapted to suspend and to seal bags, and support means adapted to support the clamps above a ground surface.  One embodiment of the invention includes a plurality of radially oriented horizontal clamps adapted to suspend and to seal bags, each of the clamps having both a generally uniform cross-section with a discontinuity adapted to receive a bag, and a first end which is angled downwardly and inwardly.  The rack also includes a support means adapted rotatably to support the clamps above a ground surface, and further adapted to be suspended from a generally horizontal surface, such as the underside of a shelf.
Patent CA-2074036-A1 (CA)
Inventor: CENDRE ANDRE
IPC: E21B23/04
Filed: 1992-07-16
Abstract: La présente invention concerne un dispositif d'actionnement à distance d'un équipement associé à une garniture de forage par des moyens hydrauliques de déplacement coopérant avec des moyens de distribution associés au fluide de forage. Les moyens de déplacement de ce dispositif transforment directement l'énergie hydraulique du fluide de forage en énergie mécanique d'actionnement sans la coopération d'autre fluide que le fluide de forage. L'invention concerne également une méthode d'actionnement utilisant le dispositif.
Patent CA-2075033-A1 (CA)
Inventor: RIALAN JOSEPH
IPC: G01V1/22
Filed: 1991-12-24
Abstract: DE LA DIVULATION : La méthode s'applique notamment pour l'association automatique à des signaux sismiques reçus par récepteurs répartis sur un site à explorer, de données topographiques relatives aux lieux d'implantation de ces récepteurs. Les signaux sismiques sont collectés et mémorisés par des appareils d'acquisition sismique qui, après chaque "tir" sismique, les transmettent successivement à un poste central 1. Quand les récepteurs sont positionnés sur le terrain, on localise chacun d'eux au moyen de positionnement par radio du type GPS par exemple et on introduit les indications de position dans une mémoire auxiliaire de l'appareil d'acquisition correspondant. A chaque rapatriement des données d'un tir, les indications sont lues dans cette mémoire et restent associées à elles au moment du regroupement général sur l'enregistreur à bande du poste central. Application à la prospection sismique par exemple.
Patent CA-2076094-A1 (CA)
Inventor: ZOELLER ALFONS
IPC: G02B1/10
Filed: 1992-08-13
Abstract: The invention relates to a scratch-resistant coating for optical materials comprising synthetics as wall as to a process for the production of this coating. In order for the synthetic material, for example a CR39 lens, to be protected against scratches, first a very thin adhesion layer of SiO is applied, which is subsequently provided with a thick SiO2 layer.  Both layers are deposited in a vacuum chamber which comprises a vaporizer and a plasma source.
Patent CA-2076157-A1 (CA)
Inventor: KOYAMA TAKESHI
IPC: C07C68/00
Filed: 1992-08-14
Abstract: The present invention relates to a novel catalyst having a stable catalytic activity for catalyzing the reaction of an alcohol with carbon monoxide and oxygen to produce carbonic acid esters (i.e., carbonate), and also the present invention relates to a method of producing carbonic acid esters using this catalyst.  The catalyst of the present invention comprises a copper halide and at least one hydroxide compound selected from a group consisting of alkali metal hydroxides and alkali earth metal hydroxides carried on a porous carrier, and also provide a  process of regenerating a catalytic activity of the catalyst.
Patent CA-2076689-A1 (CA)
Title: Low nox gas burner apparatus and methods
Inventor: SCHWARTZ ROBERT E
IPC: F23D14/22
Filed: 1992-08-24
Abstract: Improved gas burner apparatus and methods of burning fuel gas-air mixtures are provided whereby flue gases having low NOx contents are formed.   The burner apparatus includes a refractory burner tile having an air discharge opening therein and a wall surrounding the opening which extends into the furnace space and provides a mixing zone therein.  At least one passage is formed in the burner tile which opens into the mixing zone and fuel gas is jetted through the passage whereby flue gases are drawn therethrough and a fuel gas-flue gases mixture is discharged into the mixing zone. The fuel gas-flue gases mixture is swirled in the mixing zone and mixes with air therein, and the resulting mixture is discharged and burned in a primary reaction zone in the furnace space.
Patent CA-2080185-A1 (CA)
Title: Composition
Inventor: DERUDDER JAMES L
IPC: C08L69/00
Filed: 1992-10-08
Abstract: ABSTRACT OF THE DISCLOSURE            A composition comprising an admixture of a.  from about 82 to about 95 weight percent polycarbonate and b.  from about 5 to about 18 weight percent 1,4-cyclohexanedimethanol terephthalate polyester, said polyester essentially free of a second diol and a second acid and said composition essentially free of copolymer produced by transesterification of a and b.
Patent CA-2081370-A1 (CA)
Title: Apparatus for the production of chloric acid and perchloric acid
Inventor: CAWLFIELD DAVID W
IPC: C25B9/19
Filed: 1991-03-26
Abstract: An electrolytic filter press membrane cell (10) and a method of operating the cell to produce concentrated chloric and perchloric acid are disclosed. The cell employs concentrated hypochlorous acid as the anolyte and operates at high current density, using a two-stage single oxidation process to produce perchloric acid. The anode structure (21) employs a high surface area to volume ratio structure that is thin and, during the production of chloric acid, minimizes anolyte residence time in the cell.
Patent CA-2081801-A1 (CA)
Title: Surgical apparatus
Inventor: KAMBIN PARVIZ
IPC: A61B17/34
Filed: 1992-10-30
Abstract: There is described a jig for use in percutaneous decompression of a herniated disc by means of an access cannula that is percutaneously advanced into the nucleus of the disc, comprising means for removably attaching said jig to said access cannula which jig is provided with secondary means adapted to slidingly receive an accessory member, and a method of surgery using said jig.
Patent CA-2081939-A1 (CA)
Title: Method of preparing a nonwoven web having delayed wettability
Inventor: NOHR RONALD S
IPC: D04H3/16
Filed: 1992-11-02
Abstract: Abstract of the Disclosure A method for preparing a nonwoven web having delayed wettability, in that the web is not wettable by water upon its formation but which becomes wettable within from about one minute to about 24 hours thereafter without any treatment, processing step, or the like which is carried out after the formation of the nonwoven web with the specific intent and purpose of rendering a normally hydrophobic nonwoven web hydrophilic or wettable with water, which method involves melting a mixture of a thermoplastic polyolefin and an addi-tive mixture, forming fibers by extruding the resulting melt through a die at a shear rate of from about 50 to about 30,000 sec-1 and a throughput of no more than about 5.4 kg/cm/hour, drawing the fibers, and collecting the fibers on a moving foraminous surface as a web of entangled fibers.  The majority of the molecules of the additive mixture are polysiloxane polyethers. The  additive  mixture  has  a  weight-average molecular weight of from about 450 to about 700, a number-average molecular weight of from about 350 to about 600, and a z-average molecular weight of from about 500 to about 850. The additive mixture also has a polydispersity of from about 1.1 to about 1.4 and is present in an amount of from about 0.5 to about 1.8 percent by weight,  based on the amount of thermoplastic polymer.
Patent CA-2082694-A1 (CA)
Title: Polyphenylene ether resin-containing compositions containing high molecular weight polyethylene resin
Inventor: BOPP RICHARD C
IPC: C08L23/04
Filed: 1992-11-12
Abstract: ABSTRACT         There are disclosed polyphenylene ether resin-based compositions containing high molecular weight polyethylene resin and polyphenylene ether flame-retarded resins which have been rendered non-dripping through the inclusion of a drip-inhibiting amount of high molecular weight polyethylene resin. Still more particularly, there are disclosed modified polyphenylene ether resins, such as those containing high impact polystyrene, rendered non-dripping through the inclusion of a drip-inhibiting amount of high molecular weight polyethylene resin which has a weight-average molecular weight (?w) of greater than about 100,000.
Patent CA-2084364-A1 (CA)
Title: Synchronous circuit
Inventor: ISHIHARA TOMOHIRO
IPC: H04L7/08
Filed: 1992-12-02
Abstract: A synchronous circuit includes a first block operating in synchronism with a first clock signal, and a second block operating in synchronism with a second clock signal having a frequency lower than that of the first clock signal.  The first block includes a frame synchronizing circuit for detecting a synchronous pattern contained in input data having a frame format having a supervisory control data part and an information part, the supervisory control data part including pointer information indicative of a beginning of the information part.  The first block includes a synchronizing unit for generating, from the synchronous pattern, a synchronizing control signal for synchronizing the second block operation with the first block operation.  The first block includes a pulse generator for generating a first frame pulse signal from the first clock signal and a second frame pulse signal having a frequency lower than that of the first frame pulse signal.  The second block includes an information part detecting unit for generating the second frame pulse signal from the second clock signal and the synchronizing control signal, the first frame pulse signal being synchronized with the beginning of the information part.
Patent CA-2085136-A1 (CA)
Inventor: KUN ERNEST
IPC: A61K31/365
Filed: 1992-04-10
Abstract: A method for inhibition of retroviral replication by inactivation of the enzyme adenosine diphosphoribosyl transferase. The method is useful for prevention and treatment of retroviral infections, including HIV. The inhi-bition of the viral replication is achieved by administrating to a mammal susceptible to or infected with a retrovirus, drugs which speci-fically inhibit poly-ADP-ribosylation activity of adenosine diphosphoribosyl transferase.
Patent CA-2085731-A1 (CA)
Title: Analytical test devices for competition assay for drugs of non-protein antigens using immunochromatographic techniques
Inventor: SUN MING
IPC: G01N33/558
Filed: 1991-06-06
Abstract: An analytical test device and method for competition assay for particular non-protein antigens, such as antigens representing drugs of abuse, are disclosed. The analytical test device comprises a test kit housing having a cavity for introduction of a body fluid sample and flow path for the body fluid sample, a supply of microscopic colored latex particles disposed adjacent to the cavity for introduction of the body fluid sample along the path, a chromatographic membrane support disposed within the test kit housing, and means for exposing the colored latex particles to the body fluid sample.
Patent CA-2087979-A1 (CA)
Title: Interleukin 8 inhibition of cytokine-induced histamine release from bosophils or mast cells
Inventor: ALAM RAFEUL
IPC: A61K38/00
Filed: 1991-07-25
Abstract: IL-8 inhibited HRF-induced histamine release from basophils obtained from 17 donors of 20 donors at concentrations as low as 10-9 to 10-8M. The inhibition of histamine release by IL-8 was significantly higher in normal subjects than in allergic patients (59 ± 8 % vs 31 ± 7 %, p<0.04). IL-8 inhibited only cytokine-induced histamine release, and does not affect histamine release by anti-IgE, FMLP and C5a. A method for inhibiting release of allergic mediators with interleukin 8 is claimed.
Patent CA-2088151-A1 (CA)
Title: Method and apparatus for monitoring and reconditioning the flow of liquid in heating and cooling systems
Inventor: JOHANNESSON JOE
IPC: F24D19/00
Filed: 1991-06-24
Abstract: A method for continuously monitoring and reconditioning the liquid flow in heating and cooling systems, wherein the system liquid, for instance water which may possibly contain standard additives, such as alcohol or glycol, is monitored and reconditioned in several mutually sequential steps within an apparatus unit integrated with the system, by taking from the total or main liquid flow a part flow which is returned to the main flow subsequent to reconditioning. The reconditioning process includes the following steps - subsequent to viewing the liquid by means of a viewing glass: magnetic filtration for removing magnetite particles;  filtering-off solid particles (fine particles); removing corrosive gases;  deaerating the system; measuring pH, oxygen content and conductivity, wherein an optical and/or electrical alarm signal is given in the event of deviations from mutually related liquid control-values inserted in the apparatus, or in the event of disturbances in operation. Apparatus for carrying out the method consists of a system-integrated unit which includes auxiliary devices for carrying out said part-operations successively.
Patent CA-2088210-A1 (CA)
Title: Procedure for synchronizing circuit elements of a telecommunications system
Inventor: DIEKMANN THOMAS
IPC: H04L7/08
Filed: 1993-01-27
Abstract: Abstract The present invention relates to a process for synchronizing the circuit elements of a digital telecommunications systems, with at least one central clock system that is connected to the synchronizing and clock pulse failure monitoring devices of the circuit elements through a bit pulse line and a frame pulse line.          A first, predetermined, sequence of signal states that is generated by the clock and sent out on the frame pulse line, and which is at least two bits long, is identified by the synchronizing devices of the circuit elements that are to be synchronized as a frame synchronous word; and in that a second sequence of alternating signal states is transmitted between sequential frame synchronous words, this being different from the first predetermined sequence and serving to post-trigger the clock pulse failure monitoring devices.  This leads to a more frequent change of state on the frame pulse line, and this can be utilized by the clock pulse failure monitoring devices in order to identify drop-out or error more rapidly.
Patent CA-2088496-A1 (CA)
Title: Recombinant bpi proteins, uses of bpi proteins, and methods of preparing same
Inventor: MARRA MARIAN N
IPC: C07K16/00
Filed: 1991-08-13
Abstract: The present invention provides a composition comprising a BPI  Protein and an anionic compound which composition exhibits (1) no bactericidal activity and (2) endotoxin neutralizing activity.  Also, this invention provides methods for using BPI Proteins.
Patent CA-2090607-A1 (CA)
Title: Appliance for rapid cooling and freezing
Inventor: ROCKENFELLER UWE
IPC: F25D23/12
Filed: 1991-11-06
Abstract: An apparatus capable of rapidly cooling or freezing a com-position comprising a walled housing member (10) having a cool-ing chamber (20) and a door for accessing the cooling chamber from the exterior of the housing, an evaporator (40) and a blower (42) for circulating cold air from the evaporator to the cooling chamber, first (22) and second (24) reactors each containing a complex compound consisting of a metal salt and ammonia ad-sorbed thereon, heaters (21, 23) in the reactors for heating the complex compound, and valves (28, 29, 31, 32) and conduits for directing ammonia from the evaporator to the reactors, from the reactors to the condenser (30), and from the condenser to the eva-porator, and control means (45) for sequentially operating the heaters for alternately heating the complex compounds in the reactors, operating the air handling means and one or more of the valves, and switching means for turning the apparatus on and off.     The apparatus may be of a size suitable for a household appli-ance, and includes an embodiment combining the components with a microwave oven for selectively providing rapid cooling and microwave heating.
Patent CA-2093245-A1 (CA)
Title: Pilfer Proof Container
Inventor: BALLARD JEFFREY A
IPC: B65D5/66
Filed: 1993-04-02
Abstract: A pilfer proof container made from a one piece die cut which is folded into the container which has a generally rectangular configuration with the lid locked into position by way of a locking arrangement between a score or opening in the front panel of the container and a flange member coupled to the lid.
Patent CA-2093949-A1 (CA)
Title: Sulfated polyvinylphenols, composition comprising sulfated polyvinylphenols and the use thereof
Inventor: OHWA MASAKI
IPC: C08K5/1535
Filed: 1993-04-13
Abstract: Sulfated polyvinylphenols, composition comprising sulfated polvinylphenols and the use thereof Abstract Polymers comprising from 5 to 100 mol % of the same or different structural units of formula I                             (I), and from 0 to 95 mol % of the same or different structural units of formula 11 -Z-                 (II), based on the polymer, wherein n is 0 or the number 1 or 2, R1 is H or methyl, M? is H?, an alkali metal cation or an ammonium cation, X is C1-C4alkyl, C1-C4alkoxy, Cl or Br, and Z is a radical, other than (1), of an olefin monomer.   The polymers can be used as polyanions in electrically conductive compositions comprising polycations that are formed from anilines or heteroaromatic compounds, such as, for example, pyrrole, which compositions can be used as fillers for plastics or as electrodes.
Patent CA-2095515-A1 (CA)
Inventor: HARVEY JOHN A
IPC: B63B29/04
Filed: 1993-05-04
Abstract: In a personal recreational watercraft, an improvement resides in a suspension mechanism, which permits greater maneuverability and stability, and reduces driver fatigue. To overcome the strong forces, a suspension system is employed which permits up and down vertical movement, while resisting lateral movement and torsional forces. The suspension apparatus also reduces shock effects caused by choppy or rough water.
Patent CA-2096219-A1 (CA)
Title: Communication transfer between unlike communication domains
Inventor: HART THOMAS B
IPC: H04W36/14
Filed: 1992-09-21
Abstract: A communication system transfers communication from one communication domain (analog) (105) to another, unlike communication domain (digital). The communication system uses a transition cell having both analog and digital coverage areas overlapping in a 1:1 RF  footprint. The transition cell is partitioned into sectors, each sector marked with either an analog or digital domain indication. When a subscriber unit (100) enters the transition cell from one domain, an inter-cell handoff into the transition cell within the same domain is performed. When the subscriber unit enters a sector having an opposite domain indication, an intra-cell handoff is performed. If the subscriber unit (100) then moves out of the transition cell, an inter-cell handoff into the new domain is performed.
Patent CA-2096353-A1 (CA)
Inventor: GILL KENNETH
IPC: H04N3/227
Filed: 1993-05-17
Abstract: ABSTRACT OF THE DISCLOSURE   An apparatus adapted for recovering compressible refrigeration fluid from a refrigerator means and delivering the recovered fluid under high-pressure conditions along a line to a receptacle, in fluid communication and in sequence along the line. An accumulator means to which refrigeration fluid from the refrigerator means in gaseous form is drawn, a compressor to compress the refrigeration fluid from the accumulator and create a vacuum condition for drawing refrigeration fluid from the refrigerator means, and a condenser to liquify the refrigeration fluid for delivery to the receptacle, the improvement characterized by a secondary receptacle being provided, communicating with the line between the condenser and receptacle and with the line upstream of the accumulator, and a valve means in the line between the secondary receptacle and the compressor arranged, when the pressure in the secondary receptacle exceeds a predetermined value, so that the valve will open to allow some of the refrigeration fluid to flow back to the compressor for recondensation, to thereby lower the pressure in the receptacle.