baber/WOPTO huggingface dataset:
Patent CA-2035829-A1 (CA)
Title: Process for producing stable latex
Inventor: CHEN SUN-LIN
IPC: C08F257/02
Filed: 1991-02-06
Abstract: Abstract of the Disclosure PROCESS FOR PRODUCING STABLE LATEX     The subject invention discloses a process for producing a neutralized latex that is useful in the manufacture of water reducible coatings which comprises:   (1) free radical aqueous emulsion polymerizing at a pH of less than about 3.5, a monomer mixture which comprises based on 100 weight percent monomers:  (a) from about 45 to about 85 weight percent vinyl aromatic monomers, (b) from about 15 to about 50 weight percent of at least one alkyl acrylate monomer, and (c) from about 1 to about 6 weight percent of at least one unsaturated carbonyl compound; in the presence of about 0.5 to 4.0 phm at least one phosphate ester surfactant; in the presence of about 0.5 to 4.0 phm of at least one water insoluble nonionic surface active agent to produce a latex; and in the presence of at least one seed polymer which is comprised of repeat units which are derived from about 45 to about 85 weight percent vinyl aromatic monomers, from about 15 to about 50 weight percent alkyl acrylate monomers, and from about 1 to about 6 weight percent unsaturated carbonyl compounds; and (2) neutralizing the latex with ammonia to a pH which is within the range of about 7 to about 10.5 to produce the neutralized latex.  In the practice of this invention, it is highly preferred to utilize styrene as the vinyl aromatic monomer, to utilize N-butyl acrylate as the alkyl acrylate monomer and to utilize a combination of acrylic acid and methacrylic acid as the unsaturated carbonyl compound component.  It is highly desirable to adjust the pH of the polymerization medium as the polymerization proceeds by the addition of ammonia to maintain a pH of at least about 2.
Patent CA-2036427-A1 (CA)
Inventor: BUEHLMAYER PETER
IPC: A61K31/195
Filed: 1991-02-15
Abstract: Aromatic amide derivatives of formula (I) and their salts are new. (Where R1 = aliphatic hydrocarbon optionally substituted with halogen or OH, or a cycloaliphatic or araliphatic hydrocarbon. X1 = CO, SO2, or OCO with the carbon linked to the N. X2 = aliphatic hydrocarbon (optionally substituted with OH, carboxy, NH2, guanidino, cycloaliphatic or aromatic hydrocarbon) or cycloaliphatic hydrocarbon, with a carbon of the aliphatic optionally bridged by a divalent aliphatic hydrocarbon. R2 = carboxy or its ester or amide derivative, NH2, substituted amino, formyl, acetal derivative of formyl, 1H-tetrazol-5-yl, pyridyl, OH, ether, SR, SOR, SO2R, alkanoyl, sulphamoyl, N-substituted sulphamoyl, PO2H2 or PO3H2. R = H or aliphatic hydrocarbon. X3 = hydrocarbon. R3 = carboxy, 5-tetrazolyl, SO3H, PO2H2, PO3H2 or haloalkylsulphamoyl. Rings A and B are each optionally substd. 121 compounds are specifically claimed, including (S)-N-(1-carboxy -2-methyl)-prop-1-yl) -N-pentanoyl-N- (2'-(1H-tetrazol-5-yl) biphenyl-4-ylmethyl) amine.
Patent CA-2040026-A1 (CA)
Inventor: SHIGA NOBUO
IPC: H03H7/38
Filed: 1991-04-08
Abstract: In an input matching circuit adapted to be connected to an input circuit of a low noise amplifier, a matching point of impedance conversion is set to a point shifted from a mean value of variations of an optimum signal source impedance of the low noise amplifier so that a change of noise index is gentle even if the optimum signal source impedance of the low noise amplifier includes variations.
Patent CA-2040799-A1 (CA)
Inventor: SAITO ETSURO
IPC: G11B15/61
Filed: 1991-04-18
Abstract: A tape guide, device comprising a pipe-shaped guide member for guiding a tape, an ultrasonic vibrator for vibrating the guide member by standing waves, and a support member for holding the guide member, wherein one end of the ultrasonic vibrator is kept free while the other end thereof is attached fixedly to a vibrational loop on the peripheral surface of the guide member, and vibrational nodes of the guide member are held by the support member, hence stabilizing the characteristic of standing-wave vibration.
Patent CA-2041173-A1 (CA)
Inventor: TARDIF LEONARD
IPC: B65B69/00
Filed: 1991-04-24
Abstract: Un dispositif pour désensacher un sac de matière compressible le sac comprenant un panneau avant et un ballot de plastique: - deux convoyeurs en mouvement et espacés pour comprimer entre eux et déplacer un sac contenant la matière compressible; - une première paire de couteaux rotatifs installés verticalement et coupant les parties avant et supérieure dudit sac; - une deuxième paire de couteaux rotatifs intallés horizontalement et destinés à couper l'avant et les deux côtés, à un niveau juste au dessus du convoyeur inférieur; - des moyens de saisir le panneau avant du sac et le soulever au dessus du ballot pendant que le contenu continue d'être déplacé; - un système de commande qui déclenche avec délai les moyens de saisie; - un mécanisme capable de monter la partie du sac saisie vers un emplacement dans un système à rouleaux; - un système de rouleaux permettant la compression et l'égouttement dudit sac avant élimination.
Patent CA-2041730-A1 (CA)
Title: Stabilization of the interface between aluminum and titanium nitride
Inventor: OUELLET LUC
IPC: H01L23/522
Filed: 1991-05-02
Abstract: A semiconductor device comprises at least one metal interconnect layer, a titanium-based barrier layer in contact with the metal interconnect layer. The metal interconnect layer contains titanium in an amount up to the limit of solid solubility at the peritectic temperature. The arrangement is effective to reduce hillock, spike, and notch formation in the semiconductor device.
Patent CA-2043555-A1 (CA)
IPC: G06F15/16
Filed: 1991-05-30
Abstract: A method for modifying a fault-tolerant processing system (FTS) including a pair of partner sets of two processors (PA1/PA2; PB1/PB2) operating in microsynchronization at a first or low processing frequency (FL) and connected to a respective system bus (BA; BB) operating at a bus clock frequency (FB) lower than the first processing frequency (FL).  The method consists in: - selecting the system bus (BA) associated to one of the sets of "slow" processors (PA1/PA2); - replacing the other set of "slow" processors (PB1/PB2) by a set of "fast" processors (PB1'/PB2'); - synchronizing the operation of the remaining "slow" set with that of the "fast" set by:    - executing by each set (PA1/PA2; PB1'/PB2') one processor cycle during a first cycle (T1) of the bus clock frequency (FB) and generating a synchronization signal (SA1; SB1) at the end of this first bus clock cycle;    - executing during each following bus clock cycle (T2-T6) an additional processor cycle and generating a synchronization signal (SA1; SB1) until one of the sets, i.e. the slowest, fails to generate the latter synchronization signal.       In case of upgrading of the system, similar steps are executed for replacing the remaining slow set (PA1/PA2) by another set of fast processors (PA1'/PA2').
Patent CA-2045199-A1 (CA)
Title: Oxygen-fuel burner assembly and operation
Inventor: BROWN JOHN T
IPC: F23M5/02
Filed: 1991-06-21
Abstract: Abstract of the Disclosure An oxygen-oil burner is disclosed wherein the atomizing fluid not only atomizes the oil, but also functions to cool the burner tip and prevent eddying of the atomized oil from collecting on the burner tip which could create undesirable high temperatures upon ignition. Further, oxygen may be utilized as an atomizing fluid in view of the fact that the oxygen also functions to cool the burner tip and prevent preignition or cracking of the oil in the atomizing chamber.  Further, the burner may be utilized with carbon dioxide as an atomizing fluid wherein the burner temperature is thus lowered reducing the amount of NOx produced, and the spent gases may be recovered and recycled as the atomizing fluid, in view of the fact that such gases are predominantly 1/3 CO2 and 2/3 H2O.
Patent CA-2045246-A1 (CA)
Title: Pipe fitting
Inventor: WHITTLE ALLAN J
IPC: F16L33/207
Filed: 1991-06-21
Abstract: ABSTRACT OF THE DISCLOSURE          A crimp ring fittng for connection to plastic or composite piping, the fitting including a spigot having one of more circumferentially extending ribs for engagement with the inner surface of the piping, a shoulder from which the spigot extends, a resilient sleeve extending coaxially with and spaced apart from said spigot, the sleeve terminating at one end in an inwardly directed flange adjacent the shoulder for retaining the sleeve about the spigot and at the other end in an outwardly directed flange, and a crimp ring slidably mounted over said sleeve for crimpable attachment of said fitting to said pipe, in use the outwardly directed flange preventing axial movement of the crimp ring along said pipe.
Patent CA-2045868-A1 (CA)
Title: 2,4- and 2,5-substituted pyridine-n-oxides, processes for their preparation and their use
Inventor: BAADER EKKEHARD
IPC: A61K31/535
Filed: 1991-06-27
Abstract: Abstract of the disclosure 2,4- and 2,5-substituted pyridine N-oxides, processes for their preparation and their use 2,4- and 2,5-substituted pyridine-N-oxides are provided which are effective as  fibrosuppressives  and immuno-suppressives. Said compounds are also suitable for the treatment of disorders of the metabolism of collagen and collagen-like substances or the biosynthesis of C1q.
Patent CA-2048399-A1 (CA)
Inventor: TSUKIMOTO TAKAYUKI
IPC: H02N2/08
Filed: 1991-08-02
Abstract: A vibration driven motor comprises a bar-shaped elastic member and a piezo-electric element for causing a plurality of bending mode vibrations having a predetermined phase difference therebetween in a plurality of planes of the elastic member in order to drive a movable body by a rotary motion caused in particles of the elastic member.  A support member which extends along an axial center of the bar-shaped elastic member is provided at one end or each end of the elastic member.
Patent CA-2049418-A1 (CA)
Inventor: DELMERICO PAUL E
IPC: B65D43/22
Filed: 1991-08-16
Abstract: TITLE                     COVER LATCH FOR A CONTAINER                            APPLICANT                 RUBBERMAID COMMERCIAL PRODUCTS, INC.                            INVENTOR                        Paul E. DELMERICO                               -and-Howard W. AMDREWS                            ABSTRACT       A container includes a base portion having a cover attached thereto by a hinge assembly.  Plates extend outwardly from the base portion and together with arms extending outwardly from the cover carry a latch mechanism to maintain the cover in an open position.  The latch mechanism includes complementary lock barbs on a plate and an arm, each lock barb having a camming surface and a lock surface.  As the cover is rotated, the camming surface of the lock barb rides over the camming surface of the lock barb until the lock surfaces engage each other.
Patent CA-2053240-A1 (CA)
Title: Human parvovirus peptides with disulfide bridge for immunization or diagnosis
Inventor: TROJNAR JERZY
IPC: C07K14/015
Filed: 1990-04-25
Abstract: An artificial peptide having an amino acid sequence which corresponds to a naturally occurring amino acid sequence of a human parvovirus comprising an epitope and which further has two cysteine residues located on each side of said epitope, and further having a sulphur bridge between said two cysteine residues, which has been formed by a chemical oxidation step, is described.  Furthermore, an artificial antigen which reacts with antibodies induced by a human parvovirus is described. Said antigen mainly consists of an artificial peptide according to the invention. Additionally, a method of detecting antibodies induced by a human parvovirus in a sample of body fluid, wherein said sample is subjected to an immunoassay, especially ELISA, and wherein an artificial antigen according to the invention is used as a diagnostic antigen, is described. A diagnostic immunoassay kit for said method is also described. Finally, a vaccine composition comprising, as an immunizing component, at least one antigen according to the invention, is described.
Patent CA-2055035-A1 (CA)
Title: An endoscopic surgical instrument for taking hold of tissue
Inventor: BILWEIS JOSEPH
IPC: A61B17/28
Filed: 1991-11-06
Abstract: A surgical instrument, in particular for endoscopic surgery, wherein the instrument comprises a tube provided at its proximal end with a flexible suction cup and at its distal end with a bulb such that the volume of the bulb is in communication with the suction cup via the tube in order to enable the suction cup to be applied against and to adhere to tissues or organs for displacement under the control of pressure and/or suction from the bulb.
Patent CA-2055564-A1 (CA)
Title: Sport equipment with hook-and-loop fasteners
Inventor: WIEGNER GEORG
IPC: A63B71/00
Filed: 1991-11-14
Abstract: Abstract of the Disclosure A hook-and-loop fastener is used for providing a non-slip connection between a shoe and a sport equipment such as skis, skates, scooters, roller skates, surf boards, snow boards and the like.
Patent CA-2056997-A1 (CA)
Inventor: YANG YU-CHUNG
IPC: C07K16/00
Filed: 1990-05-18
Abstract: This invention provides a novel human erythropoietic growth factor and processes for producing it by recombinant DNA     genetic engineering techniques.
Patent CA-2057737-A1 (CA)
Title: Process for the preparation of glycidyl ethers
Inventor: ROTH MARTIN
IPC: C07B61/00
Filed: 1991-12-16
Abstract: Improved process for the preparation of glycidyl ethers Abstract of the Disclosure An improved process for the preparation of glycidyl ethers of formula I                                       (I), wherein Q is an aliphatic, cycloaliphatic or araliphatic radical of valency m, R is -H or -CH3, and m is an integer from 1 to 10, by reacting an alcohol of formula Q-(OH)m with m mol of an epihalohydrin of formula II                                             (II) in the presence of a catalyst to the corresponding halohydrin ether, and dehydrohalogenating said halohydrin ether with an alkali metal hydroxide to give a compound of formula I, wherein Q, m and R are as defined above and Hal is halogen, which process comprises using as catalyst a) tin difluoride or b) a divalent tin halide in conjunction with a co-catalyst.
Patent CA-2058983-A1 (CA)
Title: Process of making potable water
Inventor: TAYLOR JOHN A
IPC: C02F1/44
Filed: 1991-03-29
Abstract: A method of disinfecting water includes the steps of passing a flow of fluid containing water and/or water soluble substances and microbes therein in contact with a nonporous water and water soluble substance permeating membrane (20) and imbibing water and/or water soluble substances through the membrane (20) while preventing passage of microbes and water insoluble hydrocarbons and halogenated hydrocarbons through the membrane (20).
Patent CA-2060401-A1 (CA)
Title: N-2-chlorobenzyl-2-oxo and n-2-chlorobenzyl-2, 2-dioxo-1,2,3-oxathiazolidine derivatives, their preparation and synthesis of thieno¬3,2-c|pyridine derivatives therefrom
Inventor: COOPER GARY F
IPC: C07D495/04
Filed: 1992-01-30
Abstract: Compounds of the formula:    whereina A is oxo or dioxo;      R', RZ and R3 are independently hydrogen or lower alkyl of one to six carbon atoms;      R~, R5, R6 and R' are independently hydrogen, lower alkyl of one to six carbon atoms, alkoxy, aryl or halo; axe advantageously converted to thieno[3,z-c)pyridine derivatives and the pharmaceutically acceptable salts thereof, particularly ticlopidine hydrochloride.
Patent CA-2062723-A1 (CA)
Title: Method for continuous agglomeration of an absorbent resin powder and apparatus therefor
Inventor: TAKAHASHI HITOSHI
IPC: C08J3/12
Filed: 1990-04-27
Abstract: ABSTRACT OF THE DISCLOSURE       Continuous  agglomeration  of  an  absorbent  resin powder  is  accomplished  by  a  method  which  comprises introducing the absorbent resin powder into a cylindrical member having an open lower end by means of a current of air through a dispersing member disposed in the upper part of the cylindrical member and, at the same time,  spraying minute droplets of an aqueous liquid downwardly through a nozzle disposed inside the dispersing member thereby establishing mutual  parallel  flow contact  between  the  absorbent resin powder descending toward the lower part of the cylindrical member as dispersed with the current of air and the liquid droplets descending toward the lower part of the cylindrical member as diffused in the radial direction, and removing the produced agglomerate having a plurality of particles of the absorbent resin powder cohesively united through the medium of the liquid droplets via the lower part of the cylindrical member.    An  apparatus  for  working  the  method  is  also disclosed.
Patent CA-2065770-A1 (CA)
Title: Selecting apparatus for multimode electronic wrist instrument
Inventor: SHIFF VICTOR
IPC: G04G21/00
Filed: 1992-04-10
Abstract: PI-1287 An improved selecting apparatus for a multimode electronic wrist instrument. A microcomputer in the wrist instrument is programmed to sequentially actuate selecting indicia similar to a cursor horizontally and/or vertically on the display to indicate a selectable function for the timepiece. At least four directional switches are operated by movement of an operator's finger with respect to a central reference position. The microcomputer is further programmed to select the selectable operating function displayed when a selecting switch is operated. In one embodiment of the invention, the manual actuating means comprises four separate directional actuators arranged about a central actuator which operates the selecting switch. In another embodiment, the manual actuating means is a single member adapted to movement in at least four directions corresponding to movement of the selecting indicia on the display and also adapted to be depressed in the center to operate the selecting switch. The functions selected may comprise operating modes of the wrist instrument or may comprise alphanumeric characters and/or mathematical operators.
Patent CA-2067078-A1 (CA)
Title: Process for the purification of chlorofluorohydrocarbons
Inventor: JANSEN ROLF-MICHAEL
IPC: C07C17/389
Filed: 1992-04-24
Abstract: Abstract of the disclosure:            Process for the purification of chlorofluorohydrocarbons The invention relates to a process for removing olefinic impurities from hydrogen-containing chlorofluorohydrocarbons (HCFCs) in which the contaminated HCFCs are passed in the gas phase at 200 to 400°C over a zeolite.
Patent CA-2068625-A1 (CA)
Title: Mailing machine having a disposable inking cartridge
Inventor: PRIVIN DAVID
IPC: B41K3/60
Filed: 1992-05-13
Abstract: A mailing machine comprising a rotatable drum including a printing die peripherally extending therefrom, structure for intermittently rotating the drum to move the printing die in a predetermined circularly-extending path of travel, a receptacle, and a disposable inking cartridge removably mountable in the receptacle and comprising: a generally rectangularly-shaped hollow housing having opposed side walls and having an edge wall extending between the side walls, the walls defining an aperture formed in the housing; a reservoir roller impregnated with printing ink and rotatably connected to the side walls so as to extend therebetween; a transfer roller impregnated with printing ink and rotatably connected to the side walls so as to extend therebetween; and be accessible via the housing aperture; the reservoir and transfer rollers respectively dimensioned for rolling engagement with each other to cause ink from the reservoir roller to be transferred to the transfer roller, and the transfer roller dimensioned for disposition in the path of travel of the printing die when the cartridge is mounted in the receptacle to permit engagement by the printing die for transferring printing ink from the transfer roller to the printing die.
Patent CA-2069854-A1 (CA)
Title: Powdered automatic dishwashing composition containing enzymes
Inventor: DRAPIER JULIEN
IPC: C11D3/08
Filed: 1992-05-28
Abstract: ABSTRACT OF THE DISCLOSURE     A phosphate-free powdered dishwashing composition containing a mixture of protease enzyme and anamylase enzymes have been found to be very useful in the cleaning of dishware. The compositions contain nonionic surfactants and a alkali metal silicate and a bleaching agent.
Patent CA-2073617-A1 (CA)
Title: Carousel well rig
Inventor: HANSEN JAMES E
IPC: E21B19/14
Filed: 1992-07-10
Abstract: ABSTRACT            A well work-over drilling rig uses a single cylindrical column forming a mast for assembly and disassembly of a casing, pipe or rod forming a well string in a well bore.          The mast supports a hydraulic ram for elevating a  crown block having arms radially extending equal distances from the axis of the ram.  Cables are supported by sheaves at the outer ends of the arms to permit equal and opposite forces (moments) to be applied to the column by the weight of pipe sections or the complete well string.  The column is stabilized by racking pipe sections, including up to the full length of a well string, annularly around the column mast on a rotatable fingerboard, with substantially the full weight of pipe sections on the lower annular support.  This avoids the need for lateral guy wires to stabilize the column mast.
Patent CA-2073872-A1 (CA)
Title: Fibres minerales
Inventor: MOGENSEN GURLI
IPC: C04B35/622
Filed: 1991-02-01
Abstract: L'invention se rapporte à des fibres minérales résistant aux températures élevées ayant la composition suivante: 34 à 42 % en poids de SiO2, 31 à 38 % en poids de Al2O3, 0 à 1 % en poids de TiO2, 2,5 à 7,5 % en poids de FeO, 17 à 21 % en poids de CaO, 0,5 à 4,3 % en poids de MgO, 0,3 à 1,5 % en poids de Na2O, et 0,1 à 2,3 % en poids de K2O.
Patent CA-2074893-A1 (CA)
Inventor: DUFOURNET DENIS
IPC: H01H33/91
Filed: 1992-07-30
Abstract: The present invention relates to a medium- or high-tension circuit breaking having abutting arcing contacts and comprising a casing filled with a gas having good dielectric properties and containing a stationary first abutting contact and moving equipment including a first tube capable of being displaced by a drive rod and a semi-moving tubular second abutting contact. The annular end of the first tube carries a ring of contact arms that slide on the first abutting contact and that carry respective arcing contact blocks at their ends and respective permanent contact swellings proximate to the arcing contact blocks. A circuit breaker is thus provided which withstands the effects of arcing particularly well.
Patent CA-2076156-A1 (CA)
Inventor: HEGLER RALPH-PETER
IPC: F16L47/02
Filed: 1992-08-14
Abstract: For welding composite pipes (1, 1') together a welding ring (13) is used, which bears against the side wall portions (7, 8) of elevations (4). It consists of thermoplastic material and is provided with an electric resistance heating (19). Prior to welding there is an annular gap (23) between the front walls (10, 10') of the pipes (1, 1'), to which annular gap (23) a volume compensating groove (24) is associated in the welding ring (13). A connection of the pipes (1, 1') in their region outside of their inner pipe (2) is performed by an at least partial welding of the welding ring (13), the front walls (10, 10') bearing against each other in unwelded manner.
Patent CA-2076717-A1 (CA)
Title: Automobile door
Inventor: NAKAE TOSHIHARU
IPC: F16F3/087
Filed: 1992-08-24
Abstract: ABSTRACT    An automobile door comprises a cavity-defining door body, and shock absorber consisting of a plurality of foamed-resin tubes disposed in the cavity such that the tubes are axially in parallel and are aligned in the thickness direction of the door body.