baber/WOPTO huggingface dataset:
Patent CA-2028365-A1 (CA)
Inventor: LAI TA-WANG
IPC: C08F16/02
Filed: 1990-10-23
Abstract: ABSTRACT      A modified poly(vinyl alcohol) copolymer is provided containing copolymerized units of allylamine and/or diallylamine by copolymerizing a vinyl ester, such as vinyl acetate, and an N-allylamide and/or N,N-diallyl-amide, such as N-allylformamide and/or N,N-diallylformamide and hydrolyzing first the ester groups to hydroxy groups and then the amide groups to amine groups.  The second hydrolysis is carried out on solvent-swollen particulate polymer slurried in an acidic or basic medium.  The modified polymer can contain small amounts of unhydrolyzed ester and amide groups in addition to the hydroxy and amine functionality which characterizes the copolymer.
Patent CA-2028836-A1 (CA)
Inventor: HEGNER FRANK
IPC: G01L9/00
Filed: 1990-03-24
Abstract: The pressure sensor consists of a substrate and a diaphragm joined together around the periphery so as to form a chamber. The surface of the diaphragm facing away from the substrate is exposed to a medium whose pressure is to be measured. To protect the diaphragm against corrosion or abrasion, the diaphragm surface exposed to the medium is covered with a layer of silicon carbide, preferably by chemical vapor deposition.
Patent CA-2029848-A1 (CA)
Title: Stable thiolene compositions
Inventor: DOWLING JOSEPH P
IPC: C08G75/045
Filed: 1990-11-13
Abstract: ABSTRACT OF THE DISCLOSURE            "Stable Thiolene Compositions"     Curable norbornene-thiol compositions are stabilised by addition of a non-acidic Nitroso compound.
Patent CA-2031794-A1 (CA)
Title: Bar screening apparatus with improved rake
Inventor: RUDZINSKI STANLEY
IPC: E02B8/02
Filed: 1990-12-07
Abstract: ABSTRACT OF THE DISCLOSURE      An apparatus for removing solids from a liquid flow stream comprising a bar screen for obstructing solids from the liquid flow stream and a reciprocal rake having a plurality of projections adapted for cooperation with the bars of the screen for removing solids accumulated thereon.  The opposite sides of the rake are supported by guide rollers adapted for maintaining the rake projections in pre-determined relatively closely spaced relation to the bars during an upward raking stroke for effecting substantially complete removal of solids accumulated on the bars while preventing continued direct contact between the rake projections and the bars.  The guide rollers in turn are supported on the rods of pivoting cylinders which are actuatable in response to downward return movement of the rake for pivoting the rake about its upper end and moving the projections thereof in a downwardly and outwardly arced path with respect to the screen for enabling the rake to engage solids and debris accumulated near the bottom of the screen.
Patent CA-2037673-A1 (CA)
Title: Ribonuclease scission chain reaction
Inventor: DATTAGUPTA NANIBHUSHAN
IPC: C12Q1/68
Filed: 1991-03-06
Abstract: ABSTRACT    The present invention is directed to a process for amplifying the signal generated from the hybridization of a DNA sequence in a sample. The sample is mixed with a molar excess of RNA which is complementary to the DNA sequence to be detected, under conditions such that a DNA-RNA hybrid is formed.  The DNA-RNA hybrid is treated with an enzyme,i.e. ribonuclease H, which is capable of digesting the RNA of said DNA-RNA hybrid into low molecular weight unhybridized RNA fragments. The process repeats itself generating large quantities of unhybridized RNA fragments which can readily be detected.  The present invention as application in diagnosis of infectious disease,genetic disorders or cellular diseases.
Patent CA-2038426-A1 (CA)
Title: Method and apparatus for generating a texture mapped perspective view
Inventor: DAWSON JOHN F
IPC: G06T15/04
Filed: 1991-03-08
Abstract: A method and apparatus for providing a texture mapped perspective view for digital map systems.      The system includes apparatus for storing elevation data (10), apparatus for storing texture data (24), apparatus for scanning a projected view volume (12) from the elevation data storing apparatus, apparatus for processing (14), apparatus for generating a plurality of planar polygons and apparatus (34) for rendering images. The processing apparatus further includes apparatus for receiving the scanned projected view volume from the scanning apparatus, transforming the scanned projected view volume from object space to screen space, and computing surface normals at each vertex of each polygon so as to modulate texture space pixel intensity. The generating apparatus generates the plurality of planar polygons from the transformed vertices and supplies them to the rendering apparatus which then shades each of the planar polygons. In one alternate embodiment of the invention, the polygons are shaded by apparatus of the rendering apparatus assigning one color across the surface of each polygon. In yet another alternate embodiment of the invention, the rendering apparatus interpolates the intensities between the vertices of each polygon in a linear fashion as in Gouraud shading.
Patent CA-2038647-A1 (CA)
Title: Membranes formed from rigid aromatic polyamines
Inventor: TIEN CHAO-FONG
IPC: B01D71/56
Filed: 1991-03-25
Abstract: ABSTRACT      The present invention is a class of polymeric membranes formed from aromatic polyamides derived from dicarboxylic acid chlorides and cardo-diamines having alkyl substituents on all portions ortho to the amine functions.  These polyamide membranes exhibit high gas permselectivities and are useful in various gas separation applications.
Patent CA-2040298-A1 (CA)
Title: Security paper and method of manufacturing same
Inventor: DETRICK RICHARD W
IPC: B42D15/00
Filed: 1991-04-11
Abstract: SECURITY PAPER AND METHOD OF MANUFACTURING THE SAME               ABSTRACT OF THE DISCLOSURE    A security paper comprising a first layer of paper having an inner surface and an outer surface, a second layer of paper having an inner surface and an outer surface, and an authentication indicator disposed on an inner surface of at least one of said layers of paper; the inner surfaces of said layers of paper being affixed relative to each other to form a lamination with said authentication indicator being disposed therebetween and said authentication indicator being substantially imperceptible in said security paper in reflected light of visible wavelength.  In a preferred embodiment, the security paper includes two layers of paper each having predetermined mechanical properties, color and optical density.  Authentication indicia are printed on the inner surface of at least one layer.  The indicia are formed of a chemically, mechanically and thermally stable medium.  A chemically, mechanically and thermally stable adhesive permanently adheres the inner surfaces of the layers together.  The color and optical density of the layers, the color, color intensity and optical density of the medium and the color and optical density of the adhesive are chosen to render the authentication indicia substantially imperceptible in reflected light but detectable in transmitted light.
Patent CA-2042617-A1 (CA)
Inventor: KUMAMOTO CHIAKI
IPC: G06F9/46
Filed: 1991-05-15
Abstract: In a multiprocessor system, a table is created for each multitask job in the main memory.  The table contains a first memory field for storing a task count value "m", second memory fields respectively identified by successive task count values for storing data respectively indicating the execution start times of "m" simultaneously executed tasks, and third memory fields respectively identified by successive task count values for storing run times of "m" or more simultaneously executed tasks.   In response to the roll-in of a given task, the task count value is incremented by 1, and real time data indicated by a system timer is stored into the second memory field identified by the task count value, allowing the selected task to be processed.  At the end of the processing of any task,  a difference is derived between real time data indicated by the system timer and an execution start time stored in the second memory field identified by the task count value.  The difference is then summed with a run time previously stored in the third memory field identified by the task count value to produce a sum, the sum being stored back into the third memory field overwriting the previous run time.  The task count value in the first memory field is decremented by 1 to allow the task to be rolled out.  Differences are derived between run times stored in successive third memory fields.
Patent CA-2042817-A1 (CA)
Title: Filtering cosmetic emulsion containing a uv-a filter and a uv-b filter, and its use in protecting the skin against ultraviolet radiations
Inventor: FORESTIER SERGE
IPC: A61K8/00
Filed: 1991-05-17
Abstract: The invention relates to a cosmetic emulsion screening out UV radiation of wavelengths between 280 and 400 nm comprising in the oil phase, 2,4,6-tris((p-(2'-ethylhexyl-1'-oxycarbonyl)anilino)-1,3,5-triazine and, in the aqueous phase, benzene-1,4-(bis(3-methylidenecamphormethylsulphonic)) acid, partially or completely neutralised, of formula:  (* CHEMICAL STRUCTURE *) (I) in which A designates a hydrogen atom, an alkali metal, a N(R)4+ group, R designating a hydrogen atom or a C1-C4 alkyl or hydroxyalkyl radical, or a Mn+/n group where Mn+ is a polyvalent metal cation in which n is equal to 2 or 3 or 4, Mn+ preferably designating Ca2+, Zn2+, Mg2+, Ba2+, Al3+ or Zr4+. The cosmetic screening emulsion according to the invention possesses an improved protection index.
Patent CA-2043961-A1 (CA)
Title: Multiple ply bag with detachable inner seal pouch for packaging products
Inventor: THRALL RONALD G
IPC: B31B39/00
Filed: 1991-06-05
Abstract: ABSTRACT A tubular bag blank has a plurality of outer contiguous non-heat sealable plies and an inner heat sealable plastic ply. All of the plies in the tubular blank are bonded together circumferentially around an open top end of the bag and are closed at the bottom end where only the non-heat sealable plies are bonded together. The inner heat sealable ply is freely folded and fully detachable in a non-adhesive manner at the bottom end of the bag. The inner plastic ply being heat sealable to closure at both bag ends. Upon heat sealing the bottom end, a plastic pouch is formed by the inner ply which may be heat sealed to closure at the open end when filled with a product or commodity and may be optionally severed thereat by compressive heat and pressure applied to the outer non-heat sealable plies. When fully packed, the outer paper plies may be stripped away leaving a sealed plastic pouch with the packaged contents therein ready for use by the purchaser. 17
Patent CA-2044308-A1 (CA)
Inventor: SCRIMA ROBERTO
IPC: C08K5/3492
Filed: 1991-06-11
Abstract: A method for stabilizing synthetic thermoplastic materials against thermal degradation Abstract of the disclosure The present inveneion relates to a novel method for stabilizing synthetic thermoplastic materials against thermal degradation, which comprises incorporating in said materials one or more compounds of the formula (I)    (I) in which R1 is unsubstieuted or substituted phenyl, n is e.g. 1, 2 or 3, and, when n is 1, R2 is e.g. -COR3, - COOR4 or -CO-N(R5)R6 in which R3 is e.g. C4-Cl7alkyl, R4 is e.g. C4-Cl8alkyl, cyclohexyl or t-butylcyclohexyl, R5 and R6 which can be identical or different are e.g. C2-C8alkyl or cyclohexyl, and, when n is 2, R2 is e.g. -CO-R10-OC, -COO-R11-OOC- or -CONH-R12-NHCO- in which R10 is e.g. C2-C8alkylene, Rll is e.g.C4-C6alkylene and Rl2 is e.g. C4-C6alkylene, and, when n is 3, R2 is e.g. benzenetricarbonyl.            Several compounds of the formula (I) are new.
Patent CA-2047942-A1 (CA)
Title: Precreasing of paper tape
Inventor: KOSSUTH DONALD A
IPC: B65H47/00
Filed: 1991-07-26
Abstract: ABSTRACT In the manufacture of wallboard joint tape, the narrow paper strip, with an embossed centerline, is folded along the centerline and, while folded, advanced at speeds up to 2,000 feet/minute through a gap, about three times the doubled paper thickness, between a pair of spaced parallel rollers, then unfolded, guided laterally by relatively rigid fingers and accumulated in rolls of desired lengths. This novel precreasing results in subsequent ease of consistent, accurate folding when desired for use in taping over wallboard corner joints.
Patent CA-2049529-A1 (CA)
Title: Clothe drying machine
Inventor: CHAO-JUNG LIANG
IPC: F26B25/06
Filed: 1991-08-20
Abstract: ABSTRACT OF THE DISCLOSURE            A  clothe drying machine comprising a  drying chamber at the top for drying the clothes hung  therein, and an installation chamber at the bottom into which two air  fans and an compressor-operated  heat  exchange circulation  coil are installed to produce a  convection of  air current circulating through said drying  chamber and said installation chamber permitting moisture to  be carried  out  of the housing of the machine  through  an exhaust  hole and permitting dry and hot air current  to be  continuously delivered into said drying  chamber  to dry up the clothes hung therein.
Patent CA-2049883-A1 (CA)
Title: Monoclonal antibody specifically reactive with human perforin
Inventor: NAKATA MOTOMI
IPC: C12N5/10
Filed: 1991-08-26
Abstract: ABSTRACT      The present invention provides a hybridoma capable of producing a monoclonal antibody reacting specifically with human perforin and the monoclonal antibody belonging to subclass IgG2b and having an L chain of the K type.  The hybridoma can be produced by (i) integrating a base sequence encoding an amino acid sequence from position 297 (inclusive) to position 463 (inclusive) of human perforin into an expression vector pET3C at the BamHI restriction site, the expression vector carrying the following 35 base sequence which partially constitutes the BamHI restriction site:            (ii)  transforming E. coli cells with the thus modified expression vector, (iii) allowing the resultant transformant to produce a fused partial human perforin, (iv) immunosensitizing a rodent with the fused partial human perforin, and (v) fusing a spleen cell or lymphonodus cell obtained from the sensitized rodent with a mouse myeloma cell to prepare the hybridoma.
Patent CA-2052450-A1 (CA)
Title: Ocr system for recognizing user-specified custom fonts in addition to standard fonts
Inventor: HIGGINS RAYMOND L
IPC: G06K9/62
Filed: 1991-09-30
Abstract: An optical character recognition system is disclosed which is capable of recognizing out -of-specification characters and custom fonts, in addition to standard fonts such as E13B, OCRA, OCRB and Farington 7B type fonts recorded on documents such as bank drafts and checks.  The standard fonts represent predefined characters, and the custom fonts and out-of-specification characters represent undefined characters.  The system comprises an optical scanner, a microprocessor, a read-only-memory (ROM), a random-access-memory (RAM) with a stored program and predetermined template data, and a terminal with a keyboard and display unit.  The scanner optically scans each document and produces a plurality of grey-scale pixel values which are stored in the RAM under control of the microprocessor.  The microprocessor processes the stored pixel values, and effectively locates and segments each character on the document. In accordance with the predetermined template data, the microprocessor recognizes the segmented character if predefined, and rejects the segmented character if undefined.  The rejected character is then displayed on the display unit for the user to see and identify. In response to identification provided (specified) by the user via the keyboard, the system develops a custom template or pattern representing (defining) the rejected character, and stores the custom template in memory for future use in recognizing the character.
Patent CA-2053646-A1 (CA)
Title: Process for producing chromium carbide-nickel base age hardenable alloy coatings and coated articles so produced
Inventor: PRICE MARIANNE O
IPC: C23C4/18
Filed: 1991-10-17
Abstract: An improved erosion resistant coating for a gas path component of a turbo machine which comprises the thermal spraying of a chromium carbide, such as Cr3C2, and an age hardenable nickel base alloy, such as Inconel 718; Trademark for 76% Ni; 15% Cr; and 9% Fe, onto the gas path component and then, preferably, heat treating the deposited coating to harden the coating.
Patent CA-2056635-A1 (CA)
Inventor: WONG DENNIS
IPC: B05D3/02
Filed: 1991-11-29
Abstract: Two methods are provided for applying and forming a protective composite coating on a metallic substrate.  In the first method, the substrate is heated to a temperature between about 175° C and 275° C and a powdered coating of epoxy resin between 100 and 400 microns thick is applied to the outer surface of the heated substrate.   A premixed powder coating of epoxy resin and polyolefin is applied directly  onto  the  epoxy  resin  coating,  forming  an interlayer of interspersed domains of epoxy and polyolefin between about 100 and 400 microns in thickness.   On to this,  powdered  polyolefin  is  sprayed  to  produce  a polyolefin  sheath  coating  for  the  metallic  substrate between 200 and 1000 microns in thickness.  In the second embodiment of the method, the interlayer is formed by spraying pure epoxy resin powder and polyolefin powder from separate sources simultaneously onto the substrate.   By these methods, a metallic substrate coated with a composite epoxy/polyolefin  protective  coating  is  produced.    A particular advantage of the methods results from the fact that the powders are applied in a common spray booth through which the substrate is advanced.
Patent CA-2056738-A1 (CA)
Title: Coplanar 3db quadrature coupler
Inventor: PEKAREK JOSEPH E
IPC: H01P5/20
Filed: 1991-11-29
Abstract: COPLANAR 3dB QUADRATURE COUPLER                  ABSTRACT OF THE DISCLOSURE      A low loss coplanar waveguide 3dB power divider is described having high isolation between the output ports and low VSWR at the input port when used in a balanced circuit configuration.  The power divider includes a 50 ohm coplanar waveguide input  line and two 50 ohm coplanar waveguide output lines.  The output lines are matched to the import line by 71 ohm quarter wavelength sections of coplanar waveguide lines.   One output line is a quarter wavelength longer than the other.   A quarter wavelength slot is cut in the input line center conductor,  and a resistor is defined at the juncture of the input and output lines.  Reflected power that would normally travel out the input port is terminated in the resistor.
Patent CA-2056857-A1 (CA)
Inventor: ALARY JEAN A
IPC: C04B35/01
Filed: 1991-12-03
Abstract: PROCEDE DE FABRICATION DE MATERIAUX REFRACTAIRES ET LEURS APPLICATIONS EN FONDERIE D'ALLIAGES CORROSIFS Procédé de fabrication d'un matériau réfractaire du type nonfaçonné comportant le mélange d'agrégats réfractaires et d'un liant assurant une cohésion par liaison chimique, la mise en forme de ce mélange et sa cuisson, et caractérisé en ce que : - on mélange une charge comportant des particules réfractaires à répartition granulométrique polymodale, avec un liant liquide constitué d'un mélange en milieu aqueux de polymères minéraux à base de polysilicate et d'un polymère minéral comportant des groupements sialate, - on met en forme la pâte obtenue et après durcissement du mélange à une température comprise entre la température ambiante et 200.degree.C, - on porte le mélange durci à une température comprise entre 200 et 1300.degree.C, de manière à obtenir un matériau réfractaire de caractéristiques mécaniques élevées, de grande résistance au choc thermique et à la corrosion chimique.
Patent CA-2057041-A1 (CA)
Title: Enzyme-catalyzed process for preparing n-acyl amino acids and n- acyl amino acid amides
Inventor: GODTFREDSEN SVEN E
IPC: A61K8/46
Filed: 1990-05-22
Abstract: Compounds of general formula (I) or (II), wherein R is an optionally substituted alkyl group with 3-23 carbon atoms, and R1 is hydrogen or an optionally substituted branched or straight-chain, saturated or unsaturated, aliphatic or aromatic hydrocarbon group, are prepared by reacting a compound of the general formula (III): RCOOR2, wherein R2 is H or an alkyl group with 1-6 carbon atoms, and R is as defined above, with a compound of general formula (IV), wherein R1 is as defined above, in the presence of an enzyme capable of catalysing the formation of amide bonds, in particular a lipase. The amide group may be removed from the compound (I) by means of a second enzyme capable of selectively cleaving amide bonds, e.g. a carboxypeptidase, resulting in the compound (II).
Patent CA-2057861-A1 (CA)
Inventor: BUISMAN CEES JAN NICO
IPC: C02F3/06
Filed: 1991-04-11
Abstract: Procédé de traitement de l'eau contenant des sulfures, consistant à oxyder les sulfures dans un réacteur en milieu aérobie ayant une charge minimale de boue contenant des sulfures. La charge minimale de sulfures est égale à au moins 10 mg de sulfures par mg d'azote présent dans la boue par heure, la charge de boue étant calculée en fonction de la partie de la biomasse oxydant les sulfures. La charge minimale de sulfures peut aussi être définie comme étant égale à 25 mg de sulfures par litre de matière dans le réacteur par heure. Les sulfures peuvent être largement oxydés en soufre élémentaire qui est alors séparé et réutilisé. Les eaux usées contenant également de la matière organique en plus des diverses teneurs en sulfures sont purifiées sans intervention de bactéries filamenteuses au moyen d'un processus en deux étapes en milieu aérobie. Le processus d'élimination des sulfures peut être utilisé pour le traitement des eaux usées ayant des teneurs élevées en composés soufrés comme des sulfates, des sulfites et des thiosulfates en réduisant d'abord ces composés soufrés dans une étape aérobie. Les métaux lourds sont éliminés de l'eau par addition des sulfures à l'eau et par précipitation des métaux sous forme de sulfures; les sulfures peuvent être ajoutés par réduction des composés soufrés déjà présents.
Patent CA-2060565-A1 (CA)
Title: Aqueous polyurethane dispersions and their use as laminating adhesives
Inventor: HAENSEL EDUARD
IPC: C08G18/48
Filed: 1992-02-03
Abstract: Mo3717 LeA 28,037 AQUEOUS POLYURETHANE DISPERSIONS AND   THEIR USE AS LAMINATING ADHESIVES                   ABSTRACT OF THE INVENTION          The present invention relates to aqueous polyurethane dispersions based on A)   a relatively high molecular weight polyhydroxyl component containing carboxylic acid groups, B)   optionally another relatively high molecular weight polyhydroxyl component which is substantially free of carboxylic acid groups, C)   optionally low molecular weight polyhydroxyl compounds as chain lengthening agents, D)   organic polyisocyanates and E)   a neutralizing agent capable of converting the carboxylic acid groups into carboxylate groups, the dispersions are characterized in that the carboxyl group-containing relatively high molecular weight polyhydroxyl component A) is the esterification product of a polyether polyol al) in the molecular weight range of from 400 to 5000, with a polycarboxylic acid a2); the dispersions are useful as laminating adhesives.     Mo3717