baber/WOPTO huggingface dataset:
Patent CA-2038487-A1 (CA)
Title: Process for preparing perpropionic acid
Inventor: INABA YUKIO
IPC: C07C409/24
Filed: 1991-03-18
Abstract: Abstract:              Process for preparing perpropionic acid Disclosed is a process for preparing perpropionic acid comprising reacting propionic acid with hydrogen peroxide in the presence of a catalyst wherein the reaction is carried out by using an alkyl propionate as a reaction solvent and water in the reaction solution is removed continuously by an azeotropic distillation with the reaction solvent and at the time, since the reaction is carried out while the concentration of the peroxide in an aqueous phase separated from the dilstillate by the azeotropic distillation is maintained at not more than 0.1% by weight, a perpropionic acid solution containing almost no unreacted hydrogen peroxide can be prepared in industry.
Patent CA-2045402-A1 (CA)
Inventor: SWITALSKI STEVEN C
IPC: G01N21/78
Filed: 1990-01-16
Abstract: Silicic acid heteropolycondensates containing a luminescent compound, whose luminescence is quenchable by oxygen, form suitable sensors for measuring oxygen content in an oxygen-containing gaseous, liquid, or solid sample.
Patent CA-2045839-A1 (CA)
Title: Cloned n-methylhydantoinase
Inventor: SCHUMACHER GUNTHER
IPC: C12N9/86
Filed: 1991-06-27
Abstract: The invention concerns a DNA which codes for a protein with N-methylhydantoinase activity and which has 1.) the nucleic acid sequence shown in SEQ ID NO: 1, 2.) a sequence corresponding to it within the scope of the degeneracy of the genetic code or 3.) a sequence which hybridizes with a sequence from (1) or/and (2) under stringent conditions.      Furthermore the invention also concerns a recombinant vector which contains a DNA according to the present invention, a cell which is transformed with a vector according to the present invention as well as a process for producing a recombinant protein with NMHase activity.
Patent CA-2049004-A1 (CA)
Title: Process for producing pentapeptides and intermediates for use in the synthesis
Inventor: ANDERSEN ANDERS J
IPC: C07K7/06
Filed: 1990-03-14
Abstract: Pentapeptides having the formula H-Asp-Ser-C-Pro-Arg-OH, where Asp, Ser, Pro and Arg may have L- or D-configuration, and C denotes Asp or Asn in L or D configuration, are synthesized by reacting in an aqueous medium Y2-Pro-OH, wherein Y2 is a protective group, with Arg-Ro, wherein Ro is OH or is as defined below for R1 below, to form Y2-Pro-Arg-Ro, which is deprotected, if necessary under conversion to Pro-Arg-R1, wherein R1 is an enzymatically cleavable .alpha.-carboxy substituting group selected from esters, amides, anilides, hydrazides or L-amino acid esters, and thereafter reacting Y3-C(Z3)-OH with Pro-Arg-R1 to form Y3-C(Z3)-Pro-Arg-R1, which is deprotected to C-Pro-Arg-R1, and then reacting Y4-Ser-OH with C-Pro-Arg-R1 to form Y4-Ser-C-Pro-Arg-R1, which is deprotected to Ser-C-Pro-Arg-R1, and reacting Y5-Asp(Z5)-OH with Ser-C-Pro-Arg-R1 to form Y5-Asp(Z5)-Ser-C-Pro-Arg-R1, which is deprotected to the intermediate Asp-Ser-C-Pro-Arg-R1, and finally removing the group R1 with an enzyme, preferably trypsin to form Asp-Ser-C-Pro-Arg, or removing R1 from Y5-Asp(Z5)-Ser-C-Pro-Arg-R1 before deprotection to Asp-Ser-C-Pro-Arg-OH. The groups Y2, Y3, Y4, Y5, Z3 and Z5 are protective groups which apart from Y2 are removable by catalytic hydrogenation. The employed synthesis strategy based on the combination hydrogenation/enzyme, both proceeding under mild conditions, leads to the peptides, in particular HEPP, in good yield without risk of formation of .beta.-aspartyl peptides and cleavage of Asp-Pro bonds.
Patent CA-2049397-A1 (CA)
Title: Method of and apparatus for the production of embossed laminate board
Inventor: GOTZ WOLFGANG
IPC: B30B7/02
Filed: 1991-08-16
Abstract: ABSTRACT OF THE DISCLOSURE   Laminates are pressed into laminate board under heat and pressure and embossed in a laminate press into which a stack of two laminates with a separator between them is introduced so that along longitudinal edges of the stack at least portions remain free when the press is closed for engagement with clamping device of the press discharging unit.  As a result, the stack can be engaged while the press is closed so that the opening of the press will not cause relative shifting of the two boards and interfere with the discharge of the press.  Once the boards are removed from the press the unpressed portions can be trimmed from the board.
Patent CA-2049991-A1 (CA)
Title: Process for preparing pyrimidinetrione derivatives
Inventor: SIEGFRIED BERNARD
IPC: C07F9/24
Filed: 1991-02-05
Abstract: A process for the preparation of a compound of a formula (I), wherein R1 and R2, which may be the same or different, represent aliphatic, araliphatic or aryl groups, and R represents a group -CH2CH(OCONH2)-CH2OX in which X is a C1-5 alkyl group, which comprises reacting a compound of formula (II), wherein R1 and R2 and X are as defined above with a dihalophosphinyl or halosulphonyl isocyanate to obtain a compound of formula (III), wherein R1 and R2 and X are as defined above and Z is a group of formula -SO2Y or -POY2 wherein Y is a halogen atom followed by hydrolysis of the compound of formula (III) is described. Also described are several N-dihydroxyphosphoryl pyrimidinetrione derivatives which are intermediates in the above process, some of which may also be useful as water soluble prodrugs of certain pyrimidinetrione compounds.
Patent CA-2053710-A1 (CA)
Title: Mach-zehnder interferometer
Inventor: TERVONEN ARI
IPC: G01B9/02
Filed: 1991-10-18
Abstract: Abstract The invention relates to a Mach-Zehnder inter-ferometer comprising a symmetrical optical y-junction for dividing an input optical channel into two single-mode optical channel arms and another  symmetrical  optical  y-junction  for combining the optical channel arms into a multi-mode optical  channel  which is divided by an asymmetrical optical y-junction into two single-mode output optical channels. The wave modes of light  propagated  through  the  optical  channel arms  are,  when  combined  to  said  multi-mode optical channel, substantially equal in phase at one selected wavelength or polarization of the light  and  substantially  reverse  in  phase  at another selected wavelength or polarization of the light. In this way the interferometer can be used for separating or combining wavelengths or polarizations. (Fig- 1)
Patent CA-2054363-A1 (CA)
Inventor: KAZECKI HENRY L
IPC: H04L27/227
Filed: 1991-10-28
Abstract: The .pi./4-QPSK (quadrature phase shift key) coherent detector of the present invention has a vector input and an output comprising recovered data in bit pair form. The .pi./4-QPSK coherent detector recovers data that has been encoded in an amplitude modulated vector's phase angle. The .pi./4-QPSK coherent detector detects the .pi./4-QPSK constellation of the incoming modulated signal and outputs the recovered data stream.
Patent CA-2056538-A1 (CA)
Title: Electric power distribution panelboard-switchboard bus bar insulation shield
Inventor: MARKOWSKI ROBERT G
IPC: H02B1/06
Filed: 1991-11-28
Abstract: A combination panelboard-switchboard housing accepts plug-on connection with a plurality of electric switch-circuit breaker modules. Circuit breakers can also be directly connected into the bus bars in a plug-on connection with minor modification.      The bus bars are "edge-mounted" such that the minor dimension of the bus bars is perpendicular to the bottom of the housing to receive the modules as well as the circuit breakers, per se.      Plastic or fiber insulation shields are arranged over those bus bars that are not connected with the circuit breakers or modules to prevent inadvertent contact with the bus bars when energized.
Patent CA-2058799-A1 (CA)
Title: Microwave kettle
Inventor: WALIGORSKI GORDON J
IPC: A47J27/21
Filed: 1992-01-06
Abstract: Abstract of the Disclosure A microwave kettle includes a cover and base of microwave-transmissive material twist-lock and adhesively secured together to define a reservoir chamber.  The base has a raised, central, reentrant portion which results in the reservoir chamber having an annular portion.  A spout is unitary with the cover and is provided with a press-fitted whistle cap.  A handle is heat-staked to the cover.  A cylindrical support flange depends from the bottom of the base.
Patent CA-2060058-A1 (CA)
Inventor: AXTELL RODNEY J
IPC: A44B19/26
Filed: 1992-01-27
Abstract: A slide fastener slider is disclosed as including spaced parallel wing members and a longitudinal axis therebetween, a pull-lug affixed to its top surface, a pull member operative-ly connected to said pull-lug for moving the slider relative to interlocking elements, with the pull member being movable parallel to the longitudinal axis, and ends on the pull-lug to exert a pulling force on the slider from below the top surface thereof.
Patent CA-2065916-A1 (CA)
Title: Brick alignment clips
Inventor: PREBECK ALFREDA
IPC: E04G21/18
Filed: 1992-04-13
Abstract: A unique brick alignment clip is disclosed comprising a top face, and front and rear faces positioned on faces of a brick. A line extends between adjacent clips to align a plurality of bricks. In one aspect of the present invention the front face of the clip has irregular toothed surfaces which are drawn into the laterally outward face of the brick to secure the clip on the brick. Further, a thumb screw in the rear face also helps secure the clip on the brick. In another feature of the present invention the line extends through a central slot in the front face and around front and rear ears to secure the line to the clip. The ears are spaced laterally from a central axis of the clip, while the center slot is aligned with the central axis. The line extends rearwardly from the center slot and around the ears, such that the direction of the application of force from the line to the clip is predictable.
Patent CA-2066131-A1 (CA)
Title: Power transmission
Inventor: NIEMIEC ALBIN J
IPC: F04C15/06
Filed: 1992-04-15
Abstract: Abstract of the Disclosure A  rotary fluid energy translating device of the sliding vane type useful as a pump or motor comprising a pressure contained vane unit assembly adapted to be submerged in a body of liquid.          The pressure contained vane unit assembly comprises a pair of support plates, a cam ring interposed between the support plates, a rotor rotatably mounted in the cam ring and having a plurality of circumferentially extending vanes adapted to engage the contour of the cam ring and a flexible plate interposed between the cam ring and each of the support plates.  Each support plate includes a hub portion spaced from its respective flexible plate.  The assembly is clamped together with a clamping force in excess of the hydrostatic forces within the assembly.  One of the support plates has an axial opening for insertion of a drive shaft into driving connection with the rotor and the other of the support plates has an axial liquid passage.  Each support plate includes radial liquid passages defined by a groove at the juncture with its associated flexible plate.  When used as a pump, the assembly is submerged in a liquid and the rotor is driven to provide a pump, the radial passages provide inlet passages and the axial passage provides an outlet.  The pressure contained vane unit assembly can also be used as a hydraulic motor by utilizing the axial passage as an inlet from a pressurized source such that the radial passages function as outlets for the fluid after its energy has been dissipated by rotating the rotor and vanes.
Patent CA-2066732-A1 (CA)
Inventor: AHLQVIST JOHAN E W
IPC: G01N1/31
Filed: 1990-09-05
Abstract: The invention concerns a device and an apparatus for the processing of cytological specimens (1) according to histological principles. The device comprises a preferably cone-shaped cup (2) with a closed bottom part, side-walls defining an upper aperture with a surface area larger than that of the said bottom part, as well as a perforated membrane (3) adapted to cover the said aperture of the cup for retaining the cytological specimens, the hydraulic conductance of the membrane being sufficient to allow the exchange of processing fluids when the cup (2) is inserted in the tissue processing apparatus, the shape of the cup promoting such exchange, and means for attaching the said membrane to the cup. In the method the cup with specimens is inserted in the tissue processor with the net in a vertical position, after processing and paraffination the cup is placed on a cold plate with the net in the horizontal position allowing the specimens to sedimentate to form an enriched layer at the bottom of the cup. The solid paraffin block with enriched layer is thereafter removed from the cup and cut on a microtome.
Patent CA-2067988-A1 (CA)
Title: Process for purifying polybrominated triaryl phosphate esters
Inventor: GUNKEL LOUIS T
IPC: C07F9/12
Filed: 1992-05-05
Abstract: Abstract: PROCESS FOR PURIFYING POLYBROMINATED TRIARYL PHOSPHATE ESTERS    The invention is a process for purifying a solid, storage-stable tris(bromophenyl)phosphate ester dis-solving a crude tris(bromophenyl)phosphate in an ester at an elevated temperature, and cooling the solution sufficiently to recover a solid phase.     040192cmd/mk
Patent CA-2068046-A1 (CA)
Inventor: HASHIMOTI KOJI
IPC: C22C14/00
Filed: 1992-05-11
Abstract: Amorphous alloys comprising 30 to 75 atomic % Cr, the remainder being substantially at least one element selected from the group consisting of Ti and Zr and alloys represented by the general formula: XaCrbMc wherein X is at least one element selected from the group consisting of Ti and Zr; M is at least one element selected from the group consisting of Mg, Al, Fe, Co, Ni, Cu, Mo and W; and a, b, and c are, in atomic percentage, a > 20, 20  b  75, 0 < c  20 and a+b+c = 100. The alloys are excellent in corrosion resistance and wear resistance, form a stable protective film and are spontaneously passive, even in corrosive environment such as a poorly oxidizing, highly corrosive HCl solution and solutions containing chlorine ions.
Patent CA-2070078-A1 (CA)
Title: Controlling scale in black liquor evaporators
Inventor: GILL JASBIR S
IPC: C08L33/24
Filed: 1992-05-29
Abstract: TITLE OF THE INVENTION CONTROLLING SCALE IN BLACK LIQUOR EVAPORATORS            ABSTRACT OF THE DISCLOSURE     An anionic/cationic polymer mixture comprising: (a) a polyanion selected from polyacrylic acid (AA), polymethacrylic acid (MAA), polymaleic acid/anhydride (MA), polyitaconic acid (IA), polyvinyl sulfonic acid (VSA), poly(2-acrylamido-2-methyl propane sulfonic acid) (AMPSA), carboxymethyl cellulose (CMC), polystyrene sulfonate (SSS), and polyvinyl phosphonic acid (VPA), each optionally copolymerized with with one or two of the other, or optionally copolymerized with acrylamide up to a molar unit ratio of 1:1, provided that the total polyanionic weight average molecular weight is from about 1 to 15 thousand; and (b) a polycation selected from poly(dimethyldiallylammonium chloride) (DMDAAC), polyethylene imine (PEI), polyamine (PA), polyvinyl amine (PVA), poly(4-vinylpyridinium) (PVP), chitosan (CH), poly(methacrylamidopropyl trimethylammonium chloride) (MAPTAC), and poly(acrylamidopropyl trimethylammonium chloride) (APTAC), each optionally copolymerized with with one or two of the other, or optionally copolymerized with acrylamide up to a molar unit ratio of 1:1, provided that the total polycationic weight average molecular weight is from about 20 thousand to 2 million;      wherein the weight ratio of polyanion (a) to polycation (b) is from 1:2 to 1:8, has been found to give excellent inhibition of the formation, deposition and adherence of various a1kali metal and alkaline earth metal scales, e.g., sodium sulfate, sodium carbonate, and calcium carbonate scales in the stringent conditions which characterize black liquor heaters, evaporators, etc. in paper mills, particularly in association with Kamyr and similar wood chip digesters, characterized by elevated pH's of 12 and higher, high dissolved organic and inorganic solids concentrations, and elevated temperatures and pressures.
Patent CA-2075648-A1 (CA)
Inventor: TAEUBER RALPH JR
IPC: F16L27/08
Filed: 1992-08-10
Abstract: A pipe swivel joint with male and female hubs and an improved bore seal assembly having an anti-extrusion ring that axially energizes the swivel joint hubs toward their operational position as the joint is assembled.
Patent CA-2075692-A1 (CA)
Title: Quench system
Inventor: HOLMES PAUL
IPC: B01F35/60
Filed: 1992-08-10
Abstract: ABSTRACT OF THE DISCLOSURE                      QUENCH SYSTEM   A quench system which can be used to quench a continuous reaction such as the continuous digestion of titaniferous ores with sulphuric acid is provided. The quench system comprises a pressure vessel (1) equipped with a full bore outlet valve (5) connected to a reaction vessel (7) which may require quenching.The pressure vessel is partly filled with a liquid (18) and the ullage is occupied by a gas under pressure, the pressure being sufficient to discharge the liquid through the outlet valve (5) when open. The reaction vessel is equipped with means to detect cessation of stirring therein or power failure and the full bore valve isequipped with means (19) to open when cessation of stirring or power failure is detected. Operation of the quench system enables a reaction to be rapidly cooled and diluted to prevent solidification and the problems associated therewith in the event of the reactants being unstirred.
Patent CA-2075763-A1 (CA)
Title: Method and apparatus for blending solids or the like
Inventor: LYNN JAMES R
IPC: B01F5/24
Filed: 1992-08-11
Abstract: Abstract Particulate materials are blended in a vessel provided with a single vertically extending mixing tube therein.  The vessel comprises a downwardly converging frustoconically-shaped bottom wall which defines the lower region of the vessel.  The mixing tube is provided with one or more longitudinally extending divider plate which divide the mixing tube into a plurality of longitudinally extending compartments.   The mixing tube is provided with a plurality of openings which provide direct fluid flow communication with the interior of the vessel and the longitudinally extending compartments.  The lower ends of the mixing tube and the compartments therein extend through the bottom wall of the vessel.  Methods of blending solids using the described apparatus and methods of constructing the described apparatus are also disclosed.
Patent CA-2077473-A1 (CA)
Title: Blowing lance
Inventor: BOCK ANDRE
IPC: C21C5/30
Filed: 1992-09-03
Abstract: BLOWING LANCE                          ABSTRACT A blowing lance, more particularly a lance for refining metals by blowing a gaz onto the surface of a metal bath is disclosed. This lance comprises an adjustable tuyere for generating a supersonic refining gas flow and a blowing head with a set of fixed tuyeres (29A, 29B) opening into a front dome of said blowing head and deviding the supersonic gas flow into individual free jets. A cyclic modulator (35, 37) modulates the flow rate through said set of tuyeres (29A,  29B)  so that the flow rate in a first subset of tuyeres  (29A)  does not vary synchronously with the flow rate in a second susbset of tuyeres (29B),  i.e. the flow rates in both susbsets of tuyeres increase or decrease at the same time and they do not reach their minimum value or their maximum value at the same moment.    Fig. 4a and 4b
Patent CA-2078476-A1 (CA)
Title: High performance solvent-free contact adhesive
Inventor: DISTEFANO FRANK V
IPC: C09J123/08
Filed: 1992-09-17
Abstract: An aqueous contact adhesive composition consisting essentially of a)   an aqueous emulsion containing an adhesive polymer, b)   0-50 wt% plasticizer, based on polymer solids, c)   0.5-10 wt% thermoplastic hollow microspheres, based on polymer solids, and d)   0-4.5 wt% polyethylenimine, based on polymer solids, the adhesive composition demonstrating less than one pound per linear inch adhesion to stainless steel by PSTC-l method.
Patent CA-2079023-A1 (CA)
Title: Mill for condiments
Inventor: DIEFENBACH BERNDT
IPC: A47G19/24
Filed: 1992-09-24
Abstract: A MILL FOR CONDIMENTS                         Abstract A condiment or spice mill consists of a first condiment container (2) with a first grinding or milling means (3) and a second condiment container (4) with a second grinding or milling means (5) which are connected together by an intermediate member (6). In order to facilitate the handling of the condiment mill, the longitudinal axes (7,8) of the condiment containers (2,4) extend at an anlge to each other and the end faces (13,14) of the condiment containers (2,4) lie in a common plane (15) (figure 1).
Patent CA-2081972-A1 (CA)
Inventor: BISHARA JERIES I
IPC: C25D21/16
Filed: 1992-11-02
Abstract: A method, and apparatus therefor, for the electrolytic treatment of an acidic solution which comprises:  (a) providing an electrolytic cell, the cell comprising:  (i) an anode chamber and an anode therein; (ii) a cathode chamber and a cathode therein; (iii) a diaphragm of a non-isotropic fibrous mat comprising 5-70 weight percent organic halocarbon polymer fiber in adherent combination with about 30-95 weight percent of finely divided inorganic particulate impacted into said fiber during fiber formation, the diaphragm having a weight per unit of surface area of about 3-12 kilograms per square meter; (b) introducing the acidic solution into the cell; (c) applying a DC voltage between the anode and the cathode causing the migration of ions through the diaphragm; and (d) recovering a product of the electrolytic treatment from the anode chamber, or the cathode chamber, or from both chambers. The method, and apparatus therefor, are particularly applicable to the recovery of hexavalent chromium from a dilute chromium electroplating rinse solution.
Patent CA-2082847-A1 (CA)
Title: Binding-agent composition, its production, coating agent containing said binding agent, and the use thereof
Inventor: BEDERKE KLAUS
IPC: C08L33/14
Filed: 1992-11-13
Abstract: Abstract 1.    Binding-agent composition for coating agents, and the use thereof.     2.1.  A binding-agent composition for solvent-based or aqueous coating agents is described which can be cured at low temperature to produce coatings which are non-yellowing and resistant to solvents.     2.2. The binding-agent composition contains binding-agent components based on polyethers, polyesters, polyether polyesters and/or (meth)acrylic copolymers with, in each case, at least one acryloyl group and at least one epoxide group in the molecule, whereby the acryloyl groups and epoxide groups are present in the numeric ratio 2 : 8 to 8 : 2, as well as one or several polyamines as curing agents in a proportion of equivalent weights ranging from 2 : 0.5 to 1 : 1.5.     2.3.  Binding agent for pigmented and pigment-free lacquers, for use particularly in multi-layer lacquering.
Patent CA-2082966-A1 (CA)
Title: Winch assembly
Inventor: HOLSTER DONALD J
IPC: B66D1/50
Filed: 1992-11-16
Abstract: ABSTRACT     A winch assembly 10 includes a first transmission assembly rotatably connecting a motor 11 to a winch drum 20 comprising clutches 12, 16 adapted to rotatably engage an output shaft 13 of the motor 11 to a winch drum shaft 19 of the winch drum 20 to wind in cable 22 onto the winch drum 20 and to payout cable 22 from the winch drum 20 by disengagement of motor drive shaft 13 from winch drum shaft 19.      The winch assembly 10 further includes a second transmission assembly comprising an overrun clutch 23 rotatably connecting winch drum shaft 19 to motor drive shaft 13  if and when the payout speed of cable 22 from drum 20 exceeds a predetermined value.      The winch assembly 10 is particularly suited to control conveyor belt tension in relatively large conveyor belts by simple on/off control of the clutches 12, 16 in response to sensed conveyor belt tension.