baber/WOPTO huggingface dataset:
Patent CA-2027830-A1 (CA)
Title: Organic sulfide stabilized polymeric engineering resins
Inventor: BOHEN JOSEPH M
IPC: C08K5/36
Filed: 1990-10-17
Abstract: ORGANIC SULFIDE STABILISED POLYMERIC ENGINEERING RESINS     ABSTRACT OF THE DISCLOSURE            The present invention is directed to a composition comprising a polymeric engineering resin selected from the group consisting of polycarbonates, polyaryleters, polyamides, polyesters, polyacetals, polyaryl sulfides, cellulose esters and styrene copolymers; and an amount of an organic sulfide antioxidant sufficient to stabilize the resin against oxidative or thermal degradation during processing and use, the organic sulfide antioxidant being represented by Formula I, II, or III:               (I)             (II)      (III) wherein m, n, R, R1, R2, R3, R5, R6, R7 and R8 are as set forth in the Summary of the Invention.
Patent CA-2027979-A1 (CA)
Title: Switching apparatus with cascaded switch sections
Inventor: SENDELWECK GENE K
IPC: H03K17/74
Filed: 1990-10-18
Abstract: Switches are cascaded for improved off-state attenuation.      The first switch of the cascade comprises an L-type attenuator with series branch including a resistor and a shunt branch including a Zener diode. A bias network coupled to the attenuator and to the second switch of the cascade connection controls the diode bias for operation at a specific forward conduction when the second switch is open and for operation at a specific reverse bias condition when the second switch is closed for causing the attenuator to provide the plural functions of ( 1 ) enhancing the switch off-state attenuation, (2) providing over-voltage and overcurrent protection for input transients of either polarity and (3) providing a predetermined output DC level when the second switch is on for establishing the DC bias of a subsequent circuit, such as an amplifier, the DC bias so supplied being in a tracking relationship with DC power supplied to the subsequent circuit.
Patent CA-2030638-A1 (CA)
Inventor: MAHURKAR SAKHARAM D
IPC: A61M25/00
Filed: 1990-11-22
Abstract: A dual-lumen catheter comprises an elongated cylindrical tube made of silicone and having an internal septum extending along the length thereof to form a pair of longitudinal lumens. A hollow conical tip is formed on the distal end of the tube with the outside surface of the conical tip merging smoothly with the outside surface of the tube, and the inside surface of the conical tip merging smoothly with the inside surface of one of the lumens. The distal end of the other lumen is longitudinally spaced from the distal end of the tip. A reinforcing member is located inside the tube and extends along the length of the tube. The reinforcing member is made of a material which is substantially stiffer than the material of the tube so that the catheter can be advanced against a resistance by the applications of force to the proximal end of the catheter. <IMAGE>
Patent CA-2031050-A1 (CA)
Title: Coloured golf ball cover material
Inventor: BRADLEY WAYNE R
IPC: C08L23/08
Filed: 1990-11-28
Abstract: ABSTRACT           COLOURED GOLF BALL COVER MATERIAL A golf ball cover material having an intense hue is made from a formulation consisting of an ionic copolymer at least partially neutralised with metal ions, a primary colourant, an opacifier and an optical brightener.       Selection of the metal ions, the degree of neutralisation of the copolymer and the relative amounts of copolymer and colourant provides a series of intense hues.
Patent CA-2031537-A1 (CA)
Title: Process for producing doped semiconductor layers
Inventor: JURGENSEN HOLGER
IPC: H01L21/22
Filed: 1990-06-02
Abstract: A b s t r a c t Disclosed is a process for producing doped semiconductor layers having a low concentration of charge carriers.            The present invention is distinguished by a multiplicity of thin layers being applied on top of each other having alternately comparatively high concentrations of charge carriers and no doping and the thickness and the concen-tration of charge carriers of the individual layers being proportioned in such a manner that the desired low concen-tration of charge carriers is yielded by averaging the multiplicity of layers.
Patent CA-2031552-A1 (CA)
IPC: E04H12/22
Filed: 1990-12-05
Abstract: ABSTRACT OF THE DISCLOSURE A metal integral elevated post base for elevating the base of a wood post above a concrete base in which the post base is embedded. The post base includes a metal foot member embedded in the concrete base, a pair of metal post members integrally connected to the foot member partially embedded in and extending above the concrete base, and a pair of seat members integrally connected to the post members for supporting the wood post.  Side members integrally connected to the seat members attach to the sides of the wood post.  The post base is formed in two halves from a sheet metal blank and is configured as opposite halves and folded to form a single post and seat.  Parts of the post base could be welded, but the preferred form is not welded.
Patent CA-2031998-A1 (CA)
Inventor: KHOSHDEL EZAT
IPC: C08F220/04
Filed: 1990-12-11
Abstract: Certain polymeric polycarboxylic acids and salts containing hydroxyl or hydroxymethyl groups in close proximity to carboxyl groups, especially poly(2-hydroxymethylacrylic) acid and its salts, are effective sequestrants of divalent and polyvalent metal ions and are useful as builders in detergent compositions.
Patent CA-2034385-A1 (CA)
Title: Vector to produce biologically important peptides
Inventor: DAS GOUTAM
IPC: C07K14/245
Filed: 1991-01-17
Abstract: Abstract In this patent application we have described the construction of a novel secretion vector based on E.coli enterotoxin coding sequence. We have shown categorically that pre and pro region of toxin gene are absolutely necessary for extra cellular secretion of the stable toxin. We have also shown with specific examples that when the nucleotide coding sequence of a heterologous peptide is fused in frame to the end of the pro region in the st gene, the resultant vector in an E.coli host secretes extracellularly correctly processed heterologous peptide.          This application also includes construction of suitable vectors where this gene fusion can be achieved. General methods to create such fusions involving a) recombinant DNA technology and b) the use of site directed in vitro mutagenesis, have also been described. A general method of purification of heterologous peptides is also described in this application. This novel vector system can be used for hyperproduction and extracellular secretion of peptides of biological importance.
Patent CA-2041313-A1 (CA)
IPC: A01N43/70
Filed: 1991-04-26
Abstract: The invention provides a package which comprises a hazardous chemical dissolved or dispersed in a liquid or gel contained in a water soluble or water dispersible laminated film.
Patent CA-2042872-A1 (CA)
IPC: G06F11/10
Filed: 1991-05-17
Abstract: A method and means for managing access to a logical track of KN blocks of which K are parity blocks.  The KN blocks are distributed and stored in an array of N DASDs having K blocks per physical track per DASD.  The array includes control means for securing synchronous access to selectable ones of the DASDs responsive to each access request.  The method involves (a) formatting the blocks onto the array using a row major order modulus as the metric for balancing the data rate and concurrency (the number of DASDs bound per access) and (b) executing the random sequences of large and small access requests over the array.
Patent CA-2043650-A1 (CA)
Inventor: ALFREDEEN LENNART A
IPC: H05B6/00
Filed: 1991-05-31
Abstract: A magnetic field heating device for heating metal including a means to create an alternating magnetic field passing this magnetic field through a dissimilar metal part to uniformly heat the part.      This differs from induction heating of metal parts because the part is heated uniformly rather than being restricted to the skin or outside portions of the part. This unique heating is accomplished by utilizing a novel magnetic loop for creating a high density alternating magnetic field in the metal part to be heated.
Patent CA-2049169-A1 (CA)
Title: Membrane suitable for the dehydration of organic oxygenates
Inventor: BARTELS CRAIG R
IPC: B01D71/28
Filed: 1991-08-14
Abstract: ABSTRACT OF THE INVENTION                         (D#79, 459-F) Concentration   of   aqueous   solutions   of isopropanol may be effected by a composite membrane including a dibromobutane cross-linked poly(4-vinyl pyridine) bonded to a porous layer of polyacrylonitrile on a polyester backing.            CGS09118.PTN
Patent CA-2049645-A1 (CA)
Title: Phosphonate-containing pseudopeptides of the hydroxyethylamine and norstatin type
Inventor: HABICH DIETER
IPC: C07K5/08
Filed: 1991-08-21
Abstract: Phosphonate-containing pseudopeptides of the hydroxyethylamine and norstatin type Abstract The invention relates to phosphonate-containing pseudo-peptides of the hydroxyethylamine and norstatin type, to new oxirane- and thiirane-containing pseudopeptides as intermediates, to processes for their preparation and to their use as retroviral agents.     Le A  27 842-
Patent CA-2049734-A1 (CA)
Title: Reclosable sleeve blister package
Inventor: REIGHART RICHARD L
IPC: B65D75/56
Filed: 1991-08-22
Abstract: A reclosable package includes a container to hold a commercial article. A portion of the back of the container is left open to form an area sufficient to remove the commercial article from the container. A sleeve, working in a sliding relationship with the container, is used to cover the removal area for shipment and display. The sleeve may be removed by the customer to reveal the removal area, allowing the customer to remove or return the commercial article without the need to damage the container. The same sleeve is reused to cover the removal area without damaging the package or the commercial article.
Patent CA-2052252-A1 (CA)
Inventor: FADAVI-ARDEKANI JALIL
IPC: H04L25/03
Filed: 1991-09-25
Abstract: A technique for generating the tap-weight coefficients for a signal dispersion cancelling filter utilizes circuitry which is responsive to received signal samples and generates a time-ordered sequence of derived signal samples. The tap-weight coefficient circuitry includes filters which operate in response to this sequence. One such filter is responsive to the derived signal samples in a firstportion of the sequence after the time-order of the derived signal samples therein is reversed and another filter is responsive to the derived signal samples in a second predetermined portion of the sequence. This technique is applicable to a variety of communications systems including television and is particularly suitable for integrated circuit implementation.
Patent CA-2052953-A1 (CA)
Title: Plastic film or coated paper
Inventor: OGASAWARA AKIRA
IPC: G03C1/32
Filed: 1991-10-08
Abstract: ABSTRACT         A plastic film or coated paper has a hydrophilic colloid layer thereon comprising particles with the average particle size of 0.5 to 20 µ  coated with a water-repellent material.  The water-repellent material is selected from the group consisting of silicone, a silane compound, a fluorine-containing  compound  and a silane coupling agent.  A silver halide  photographic  light-sensitive  material  comprises   a hydrophilic  colloid  layer  comprising  particles  with  the average  particle size of 0.5 to 20  µ  coated with a water-repellent material.
Patent CA-2056239-A1 (CA)
Title: Symmetric cvd diamond articles and method of their preparation
Inventor: ANTHONY THOMAS R
IPC: C23C16/01
Filed: 1991-11-28
Abstract: SYMMETRIC CVD DIAMOND ARTICLES AND      METHOD OF THEIR PREPARATION     ABSTRACT OF THE DISCLOSURE   The present invention is directed to a method for the chemical vapor deposition (CVD) of a layer of diamond on a substrate held at elevated CVD diamond-forming temperature wherein a hydrocarbon gaseous mixtures is passed over a hot elongatefilament for at least partially decomposing said mixture to form said CVD diamond layer on said substrate.  The present invention specifically is directed to forming a substantially uniformly thick CVD diamond layer on the substrate which is stationary. Such method comprises disposing said substrate stationarily at a distance, C, from a hot elongate filament.  The substrate has a maximum radius, R, which is defined as the maximum distance from the center of the substrate to an outermost surface to be coated by the layer of CVD diamond.  The substrate also is disposed parallel about its axis to the filament.  The layer of CVD diamond becomes more uniform in thickness as theratio, R/C, decreases.  An advantageous substrate is a wire which can be coated with a layer of CVD diamond for making a nozzle, wire drawing, die, or other annular article when the wire is separated from the resulting diamond annulus.  For a wire substrate and two hot filaments, ratios of r/c of less than about 0.05 provide substantially uniform CVD diamond layers on the wire substrate.  For a wire substrate and a single filament, ratios of r/c less than about 0/02 also provide substantially uniform CVD diamond layers.
Patent CA-2056418-A1 (CA)
Title: Apparatus and method for sparging a gas into a liquid
Inventor: CHENG ALAN T Y
IPC: B01F3/04
Filed: 1991-03-03
Abstract: APPARATUS AND METHOD FOR SPARGING        A GAS INTO A LIQUID             Abstract of the Disclosure An improved apparatus and method for sparging a gas into a body of liquid wherein the gas is discharged at sonic velocity into the liquid producing a shock wave and creating a jet of dispersed gas and liquid.  The jet induces cocurrent flow in contiguous liquid preventing coalescence and enhancing mass transfer between the phases.  In apparatus for the practice of the method, the gas discharge nozzle is directed into an acceleration tube through which the jet and induced liquid flow pass and are discharged into a larger draft tube thereby increasing the induced liquid flow.
Patent CA-2056424-A1 (CA)
Inventor: BATEMAN ROBERT H
IPC: H01J49/48
Filed: 1990-06-01
Abstract: PCT No. PCT/GB90/00845 Sec. 371 Date Dec. 2, 1991 Sec. 102(e) Date Dec. 2, 1991 PCT Filed Jun. 1, 1990 PCT Pub. No. WO90/15434 PCT Pub. Date Dec. 13, 1990.An electrostatic analyzer (1) for dispersing a beam of charged particles (10) according to their energy comprises two groups (2, 3) of spaced-apart linear electrodes (4, 8, 9, 20) respectively disposed above and below the charged particle beam. The potentials of the electrodes (4, 8, 9, 20) in each group progressively increase from one to the next, thereby providing an electrostatic field in a central plane (7) between the groups which is capable of deflecting the charged particles along different curved trajectories (11, 12) according to their energies. Various mass spectrometers incorporating such an analyzer are also disclosed.
Patent CA-2059172-A1 (CA)
Inventor: BIRD RAYMOND F
IPC: H04L12/22
Filed: 1992-01-10
Abstract: A arrangement of authenticating communications network users and means for carrying out the arrangement:  A first challenge N1 is transmitted from a first user A to a second user B.  In response to the first challenge, B generates and transmits a first response to the challenge and second challenge N2 to A.  A verifies that the first response is correct.  A then generates and transmits a second response to the second challenge to B, where the second response is verified.  The first response must be of a minimum form S1 and S2 are shared secrets between A and B.  S1 may or may not equal to S2.  In addition, f() and g() are selected such that the equation f'(S1,N1'....) = g(S2.N2) cannot be solved for N1' without knowledge of S1 and S2. f'() and N1' represent expressions on a second reference connection.  Preferably, the function f() may include the direction D1 of flow of the message containing f(), as in f(S1, N1, D1,...). In such a case, f() is selected such that the equation f'(S, N1',D1',...) = f(S, N2, D1,...) cannot be solved for N1' without knowledge of S1 and S2.  In this equation, D1' is the flow direction indicator of the message containing f'() on the reference connection.            Specific protocols satisfying this condition are protected from so-called intercept attacks.
Patent CA-2059528-A1 (CA)
Title: Mitonafide infusion solution
Inventor: TETZNER CHRISTINE
IPC: A61K31/47
Filed: 1990-11-26
Abstract: Mitonafide infusion solution Abstract of the disclosure An infusion solution which contains mitonafide is described.
Patent CA-2059577-A1 (CA)
Title: Object based system for software maintenance
Inventor: TYRA KRISTOPHER L
IPC: G06F9/06
Filed: 1992-01-17
Abstract: ABSTRACT OF THE DISCLOSURE          Object Based System for Software Maintenance A  computer  implemented  system  and  method  for automatically generating an executable version is based on  component  objects   and  events.    Object-oriented language  concepts  of  encapsulation,  inheritance,  and message   passing   are   employed   to   simplify   the specification and execution steps.  Software maintenance includes the steps of assembling executable systems from defined component parts such as source code files and object code files.  An object definition is provided for each software component containing a specification of its dependency upon other objects and processing methods that must  be  executed  to  create  that  object.   An event definition is created for each process that is to be applied to the component objects.  The event definition includes a specification of any prerequisite events and conditions for delivery of the event message.  An object dependency interpreter is provided to recursively control the passing of events to the objects for action.   It ensures that any prerequisite events are first executed and that any objects upon which the current object is dependent  are  processed  before  the  present  object. Inheritance  is employed  to  simplify  object definition through  the  definition  of  generic  objects  which  the object    dependency    interpreter    instantiates    for processing.   Mapped memory is used to store an object data structure containing the representation of component objects and event objects.  Additional storage is used to retain component object file system status.
Patent CA-2060411-A1 (CA)
Inventor: BENZARIA JACQUES
IPC: C07C63/28
Filed: 1992-01-30
Abstract: Fabrication de téréphtalate de métal alcalin ou alcalino-terreux par réaction d'un hydroxyde de métal alcalin ou alcalino-terreux avec un polytéréphtalate de polyol, et conversion éventuelle du téréphtalate en acide téréphtalique. La réaction est effectuée sans addition d'eau ou en présence d'une quantité d'eau représentant au plus, en poids, la quantité de polytéréphtalate. Application au traitement de déchets de polytéréphtalate de polyol.
Patent CA-2061241-A1 (CA)
Title: Underdrain for granular medium filter
Inventor: ROSS DAVID S
IPC: B01D24/22
Filed: 1992-02-14
Abstract: D.N. 2464 IMPROVED UNDERDRAIN FOR                   GRANULAR MEDIUM FILTER            ABSTRACT        An  improved  apparatus  and  method  for  operating  a granular  medium   filter  is   disclosed.    The apparatus comprises an improved  underdrain  structure  made  up  of a plurality  of  rectangular  compartments  which  allows  the filter bed to be "air  pulsed"  as  well  as  backwashed for thorough cleaning of the bed.  Nozzles are positioned within the rectangular compartments  and  directed  vertically into the filter  bed.   Fluid from  the nozzles helps to break up the  bed  during  backwashing  as  well  as  counteract size classification  of  the  medium  during  this  process.  The method of  operating a  filter with  the improved underdrain structure is also described.
Patent CA-2062875-A1 (CA)
Inventor: KIMURA KATSUJI
IPC: G06F7/52
Filed: 1992-03-12
Abstract: Disclosed is a multiplier comprising a first and second squaring circuits each having  a differential input terminal pair  whose outputs are  connected in common.  A first input terminal of  the first  squaring circuit  is  applied with a first input voltage  and  a second input terminal thereof is applied with a second input voltage opposite in phase to the first input voltage.   A first input terminal  of the second squaring  circuit  is  applied with the second input voltage and a  second input terminal  thereof  is  applied with  the first input voltage.  The first and second squaring circuits each includes two sets of unbalanced differential transistor pairs  which are arranged  so that their inputs are opposite in  phase and  their outputs are connected  in common.  Said each unbalanced differential transistor pair has a different emitter  size  from  each  other.   Two  transistors  having different  emitter  sizes  constituting  each   differential transistor pair  may be  connected with  an emitter resistor having  a  resistant value  inversely  proportional  to  the emitter size ratio  to the both  or  one  of  them.  The two transistors  constituting  said each differential transistor pair may be equal in emitter size.   In this case,  only one transistor thereof has an emitter resistor connected.  Also, in case of  being equal  in  emitter  size,  one  transistor thereof may have a Darlington connection.
Patent CA-2064387-A1 (CA)
Title: Pneumatcal, mechanical merc containment skirt
Inventor: VON BRAUN DAUN
IPC: E21B12/00
Filed: 1992-03-24
Abstract: Abstract PNE?  ?ATICAL, MECHANICAL MERC CONTAINMENT SKIRT         The mechanical device relates to a improvement function of a containment skirt by design, relative to Amercian patent #4,344,862. Here it is improved to contain, and release a puematically operated skirt around the tool joints, enabling it to direct the pressurized drilling fluids for reuse or storage. The improvements are in the overall design that enables it to utalize mechanical arms that facilitate its opera-tional functions.
Patent CA-2065497-A1 (CA)
Title: Material mixer
Inventor: BUSCHBOM ELDON F
IPC: B01F29/63
Filed: 1992-04-07
Abstract: ABSTRACT OF THE DISCLOSURE An apparatus for mixing materials includes a cylindrical drum having a mixing chamber with a longitudinal axis, an inlet end having an opening open to the mixing changer, and a closed end for holding materials, a hopper located adjacent the inlet end of the drum for directing materiasl through the opening into the mixing chamber, a frame for supporting the hopper, a planetary gear drive supporting the drum for rotation on the frame about the longitudinal axis thereof and inclining the drum and the axis downwardly from the inlet end thereof, a trough having an open top located in the mixing chamber, an auger in the trough for moving materials along the trough toward the inlet end of the drum, a drive mounted on the hopper for rotating the auger, the planetary gear drive having a shaft connected to the auger and a rotatable member connected to the drum whereby the drive rotates the auger and operates the planetary gear drive to rotate the drum, means mounting the planetary gear drive on the frame adjacent the closed end of the drum, a bar mounted on the trough above and extended generally parallel to the auger to provide substantially even distribution of materials moving into the trough and to restrict the amount of materials that move into the trough during rotation of the drum, and means located below the hopper to allow materials discharged by the auger from the trough to selectively flow back into the mixing chamber or flow out of the drum to a selected location.