baber/WOPTO huggingface dataset:
Patent CA-2033077-A1 (CA)
Inventor: HISE RONNIE G
IPC: D21C9/12
Filed: 1990-05-14
Abstract: A chlorination stage bleaching method is disclosed which comprises suppressing formation of polychlorinated dioxins and furans without resulting in cellulose degradation and poor pulp viscosity by controlling the molecular chlorine:hypochlorous acid ratio by adding the chlorine to the pulp in multiple charges and by adding an alkaline material to the pulp during the chlorination stage such that chlorination stage pH is controlled to a value from above about 1.8 to below about 3.5.
Patent CA-2034349-A1 (CA)
Title: Turbine blade inner and attachment structure
Inventor: PRZYTULSKI JAMES C
IPC: F01D5/34
Filed: 1991-01-17
Abstract: TURBINE BLADE INNER END ATTACHMENT STRUCTURE  ABSTRACT       A gas turbine engine having an outer annular turbine rotor, which is counterrotatable relative to an inner annular turbine rotor, includes attachment structure for attaching turbine blades in circumferential rows to the inner rotor.  The attachment structure includes first and second male members of hook-like configurations spaced axially along and circumferentially extending about the rotor, and first and second grooves defined by flanges attached to the rotor and axially spaced along and circumferentially extending about the rotor.  The grooves open in a common axial direction for receiving in mated relation respectively and concurrently the hook-like configured first and second male members. The attachment structure also includes several different locking arrangements for locking the male members in mated relation with the grooves to thereby restrain the turbine blade against radial and axial movements relative to the rotor.  Some locking arrangements are adapted for locking all of the blades but a last or final one thereof in a circumferential row around the rotor.  Other locking arrangements are adapted for locking all of the blades in the circumferential row. Still other locking arrangements are adapted for locking only the last or final blade to complete the circumferential row of blades.
Patent CA-2034516-A1 (CA)
Title: Transdermal administration of zwitterionic drugs
Inventor: MAZZENGA GERARD C
IPC: A61K45/00
Filed: 1991-01-18
Abstract: Transdermal administration of zwitterionic drugs Abstract of the disclosure Transdermal therapeutic systems containing zwitterionic drugs and methods of administering zwitterions transdermally are disclosed. The systems comprise a zwitterionic drug in a salt form and a solvent therefor.
Patent CA-2035154-A1 (CA)
Title: Laser catheter having diffraction grating for beam shaping
Inventor: BAKER GLENN S
IPC: A61B18/22
Filed: 1991-01-29
Abstract: Abstract of the Disclosure LASER CATHETER HAVING DIFFRACTION GRATING                    FOR BEAM SHAPING     A laser catheter includes an elongated tubular catheter body, one or more optical fibers extending through the catheter body and a catheter window mounted at the distal end of the catheter body.  The optical fibers direct laser energy through the catheter window for removal of biological material. A diffraction grating is formed on the proximal surface of the catheter window in alignment with laser energy from the optical fibers. The laser energy is modified by the diffraction grating to provide a desired spatial distribution pattern. Preferably, the diffraction grating provides a diverging beam suitable for forming a hole in an obstruction, the hole having a diameter that is approximately the same as the diameter of the catheter.  The diffraction grating enables formation at the distal end of the catheter of a beam pattern having an elliptical or other noncircular cross section.  In another embodiment, an optical fiber with a noncircular cross section is used to shape the laser radiation emitted from the laser catheter.
Patent CA-2037411-A1 (CA)
Title: Milbemycin ether derivatives
Inventor: MORISAWA YASUHIRO
IPC: C07H19/01
Filed: 1991-03-01
Abstract: Compounds of formula (I): (see formula I) [in which: R1 is hydrogen, halogen, cyano, nitro, optionally substituted alkyl, alkoxy, alkoxyalkoxy, or a group of formula: -(CH2)n NHR9 -(CH2)n NR9COR6 -(CH2)n NR9COCOR6 -(CH2)n NR9COCOOOR7 -(CH2)n NR9CHR6NHCOR6 -(CH2)n NR9CHR6NHCONHR6 -(CH2)n NR9CHR6NHCOOR7 -(CH2)n NR9C(=Y)YR6 -(CH2)n NR9C(=Y)NR6R6 -(CH2)n NR9C(=Y)NR6NR6R6 -(CH2)n NR9C(=Y)NR6NHZ -(CH2)n NR9C(=NR11)NHR11 -(CH2)n NR9C(=NR11)R6 -(CH2)n NR9SO m R6 or wherein: m is 1 or 2; n is 0, 1 or 2; R6 is hydrogen or a variety of organic groups; R7 is alkyl, cycloalkyl, or aralkyl; R9 is hydrogen or alkyl; R11 is any of R6, or cyano, nitro, -COOR7 or -COR6; Y is an oxygen or a sulfur; Z is -COOR7, -COR6 or -SO2R6:      A is a group of formula:   -CR2=CR3-CHR4-or   wherein R2, R3 and R4 are hydrogen, halogen, alkyl or alkoxy;      R5 is methyl, ethyl, isopropyl or sec-butyl; and X is hydroxy, optionally substituted alkanoyloxy or hydroxyimino and salts and esters thereof have valuable anthelmintic, acaricidal and insecticidal activities.      Methods of preparing the compounds are also provided.
Patent CA-2037788-A1 (CA)
Inventor: YAMAMOTO YASUHIRO
IPC: A23L17/00
Filed: 1991-03-08
Abstract: The present invention relates to quality-improving agents for fish meat SURIMI containing powdered fat and oil as effective ingredient and, preferably, relates to quality-improving agents for fish meat SURIMI including the powder mixture of 5 to 80 weight parts of powdered fat and oil and 20 to 95 weight parts of powdered sugar(s) and/or sugar alcohol(s), which are more effective in improvement of whiteness and in prevention of elasticity decrease of fish pastes than conventional improvers.
Patent CA-2040975-A1 (CA)
Inventor: SATAKE YOSHIKATSU
IPC: C08G75/024
Filed: 1991-04-23
Abstract: Disclosed herein are a poly(arylene thioether-ketone) copolymer comprising (A) at least one poly(arylene thioether-ketone) segment having predominant recurring units of the formula                 wherein the -CO- and -S-are in the para position to each other and (B) at least one poly(arylene thioether) segment having predominant recurring units of the formula      , (a) the ratio of the total amount of the poly(arylene thioether) segment (B) to the total amount of the poly(arylene thioether-ketone) segment (A) ranging from 0.05 to 5 by weight, (b) the number-average polymerization degree of the poly(arylene thioether) segment (B) being higher than 1 but lower than 10, and (c) said copolymer having a melt viscosity of 2-100,000 poises as measured at 350°C and a shear rate of 1,200/sec as well as a production process of the poly(arylene thioether-ketone) copolymer.  The polymers of the present invention have improved processability, handling properties and solvent resistance and can be formed or molded into various heat-resistant products.  The polymers have wide applicability and can be formed into sheets, films, pipes, electronic and electric parts, car parts, circuit boards, etc.
Patent CA-2041404-A1 (CA)
Inventor: RUEB FRITZ
IPC: A46B9/04
Filed: 1991-04-26
Abstract: BRUSH WITH TUFTS OF FLEXIBLE BRISTLES          ABSTRACT OF THE DISCLOSURE         A brush, particularly a toothbrush, with several discrete tufts consisting of flexible bristles each having one end anchored in the adjacent supporting surface of the brush body. The bristles of some or all of the tufts are inclined relative to each other and relative to the axes of the respective tufts as well as relative to adjacent portions of the supportinq surface. Each tuft can resemble a cylindrical rod in undeformed condition but its free end expands in actual use due to enhanced flexibility of its bristles as a result of inclination of the bristles relative to each other and relative to the supporting surface of the brush bodv.  At least some of the tufts can be assembled of shorter and longer elongated straight or helical bristles.
Patent CA-2044374-A1 (CA)
Title: "radical retirement" - a board game
Inventor: BURNS JO-ANN M
IPC: A63F1/00
Filed: 1991-06-11
Abstract: Abstract A game designed for two to four players, ages eight to adult. Each player starts the game as the person whose square they land on in a preliminary roll of the dice. Once identities have been assumed, each player starts the game at the age of twenty, and receives ten-thousand dollars as a birthday gift.          They then continue to play the game untill they reach the age of sixty-five, collecting Birthday Cards, Money and Material Objects as they play.
Patent CA-2044728-A1 (CA)
Title: Flame retardant hot melt adhesive compositions using brominated styrene/atactic polypropylene graft copolymers
Inventor: ATWELL RAY W
IPC: C09J151/06
Filed: 1991-06-17
Abstract: ABSTRACT OF THE DISCLOSURE     Flame retardant hot melt adhesives include atactic polypropylene having grafted thereon a ring-halogenated styrene.  The compositions may also include homopolymers of the styrene monomer or equivalents, as well as non-halogenated atactic polypropylene.  Tackifying agents, waxes, anti-oxidants and other additives may also be included.
Patent CA-2044952-A1 (CA)
Title: Compatible polymer blends
Inventor: FISCHER JENS-DIETER
IPC: C08L33/06
Filed: 1991-06-19
Abstract: ABSTRACT OF THE DISCLOSURE       Compatible polymer blends containing A)  0.5 - 99.5 wt.%, preferably 50 to 90 wt.% of a polyphenylene ether, synthesized from units of formula (I)               I   where R1 stands for an optionally substituted cycloalkyl group or alkoxyl group having 1 to 8 carbon atoms or an optionally substituted aryl group having 6 to 10 carbon atoms or for chlorine, where R2 stands for an optionally substituted cycloalkyl group or alkoxyl group having 1 to 8 carbon atoms or an optionally substituted aryl group having 6 to 10 carbon atoms or for chlorine, and B)  99.5 - 0.5 wt.%, preferably 50 to 10 wt.% of a polyaryl(meth)acrylate containing 20 - 100 wt.% of monomers of the formula (II)                     (II) where R3 stands for hydrogen or methyl, Q stands for an alkylidene group having 1 to 6 carbon atoms or a group -(CH2)m-O-, where m denotes a number from 2 to 6, x stands for zero or 1 and R4 stands for hydrogen, an alkyl or alkoxyl group having 1 to 6 carbon atoms or an aminoalkyl group having 1 to 6 carbon atoms, which may be substituted at nitrogen with alkyl groups having 1 to 6 carbon atoms.
Patent CA-2045377-A1 (CA)
Inventor: ROE DONALD C
IPC: C09K3/18
Filed: 1991-06-25
Abstract: Abstract Methods are disclosed for applying a foam comprising a freeze control agent, such as a brine, ethylene glycol, or cellulose ether, to a solid particulate material, such as coal or mineral ores to inhibit freezing and increase flowability and handling properties of the solids.  Stability of the foam is enhanced by use of anionic and/or amphoteric surfactants in the foamed composition.  Aqueous compositions, ready for foaming, comprising freeze control agent, and an anionic and/or amphoteric surfactants are also disclosed.
Patent CA-2046150-A1 (CA)
Title: Method and device for the preparation of hot, liquid slags
Inventor: SCHOTT HANS-KLAUS
IPC: C21B3/08
Filed: 1991-07-03
Abstract: Method and Device for the Preparation of Hot, Liquid Slag -------------------------------------------------------------------------A b s t r a c t The invention concerns a method and device for preparing hot, liquid slag, in which the slag to be prepared is cooled to below its solidification temperature, whereby the liquid slag is conveyed to the upper area of a fluidized bed consisting primarily of a granular support material and whose (equilibrium) temperature is maintained below the solidification temperature of the slag.  (Fig. 3)
Patent CA-2047059-A1 (CA)
Title: Detachable, low wattage track mounting lamp
Inventor: LIN JOHNSON
IPC: F21V23/02
Filed: 1991-07-15
Abstract: ABSTRACT OF THE DISCLOSURE:           A  detachable,  low  wattage  track  mounting  lamp of the type,  comprising a track for mounting at least a project lamp via a transformer.   The transformer comprises a casing having a first pair of strip conductors at the top and inserted in the track to electrically connect to an external power supply through two strip conductors fas-tened in a groove defined in the track and a second pair of strip conductors disposed inside a square recess defined therein at  the bottom.   The project  lamp comprises a bracket having a pair of strip conductors fastened in the square recess to electrically connect with the second pair of strip conductors of said transformer.
Patent CA-2047833-A1 (CA)
Title: Cloning of the biosynthetic pathway genes for chlortetracycline production from streptomyces aureofaciens and their expression in steptomyces lividans
Inventor: LOTVIN JASON A
IPC: C12Q1/18
Filed: 1991-07-24
Abstract: The present invention relates to the cloning, isolation and DNA (isolated fragment from Streptomyces aureofaciens) which directs the synthesis of tetracycline and chlortetracycline, in a heterologous host such as Streptomyces lividans. The claimed plasmids are isolated by screening a cosmid library, constructed in Escherichia coli, for the expression of tetracycline resistance in S. lividans.
Patent CA-2049045-A1 (CA)
Title: Method for producing diphenyl sulfone compounds
Inventor: KINISHI RYOICHI
IPC: C07C315/00
Filed: 1991-01-28
Abstract: ABSTRACT    A method of producing diphenyl sulfone compounds of the formula (I)                      (I) wherein R is an alkyl having l to 8 carbon atoms, a cycloalkyl having 3 to 8 carbon atoms, an alkenyl having 2 to 8 carbon atoms or an arylalkyl which may have substituent(s) on the aromatic ring, comprising reacting 4,4'-dihydroxydiphenyl sulfone with a compound of the formula R - X wherein R is as defined above and X is halogen, characterized by conducting the reaction in 0.3-1.5 weight parts of an aqueous solvent per weight part of 4,4'-dihydroxydiphenyl sulfone in the presence of 1.5-3 moles of an alkali per mole of 4,4'-dihydroxydiphenyl sulfone.    Since the method of the invention permit production of 4-substituted hydroxy-4'-hydroxydiphenyl sulfones, specifically 4-n-propoxy-4'-hydroxydiphenyl sulfone or 4-isopropoxy-4'-hydroxydiphenyl sulfone using an inexpensive solvent, with good selectivity and economical feasibility, they are industrially advantageous.
Patent CA-2049151-A1 (CA)
Inventor: CHANG DANE
IPC: C10K1/14
Filed: 1991-08-15
Abstract: Sulfur dioxide is removed from a fluid containing SO2 by employing as an absorbent for the SO2 an aqueous solution of a compound represented by Formulas I, II or III.      Where Formula I is:   (see formula I) wherein each Y is independently -(CR22)- or -(CR2)= and each R1 or R2 is independently hydrogen, an alkyl group; an hydroxyalkyl group; an aldehyde group; a carboxylic acid group or salt thereof; an alkyl group containing at least one carboxylic ester, a carboxylic acid or salt thereof, ether, aldehyde, ketone, or sulfoxide group; wherein the compound has at least one carbonyl group. Formula II is:       wherein each R3 is independently hydrogen; an alkyl group; a hydroxyalkyl group; an aldehyde group; a carboxylic acid or salt group; or an alkyl, aryl, or aralkyl group containing at least one carboxylic ester, a carboxylic acid or salt, ether, aldehyde, ketones or sulfoxide group. The absorbent solution preferably can be thermally regenerated by heating to remove SO2, Formula III is:       wherein each R6 or R5 is independently hydrogen; an alkyl group; a hydroxyalkyl group; an aldehyde group; a carboxylic acid or salt group; an alkyl group containing at least one carboxylic ester, carboxylic acid or salt, ether, aldehyde, ketone or sulfoxide; and wherein at least one R6 or R5 is a carbonyl-containing group, such as an aldehyde group, a carboxylic acid containing group; a carboxyl ester group, or a ketone-containing group. The absorbent solution preferably can be thermally regenerated by heating to remove SO2.
Patent CA-2049727-A1 (CA)
Inventor: WILLIAMS STEVEN E
IPC: H05B3/32
Filed: 1991-08-22
Abstract: The improved heating coil support and insulation mechanism of the present invention is intended for use in regard to electrical heating assemblies which include heating coils supported and electrically insulated by means of coil support insulators, and each of which includes an insulator body and coil engagement means attached to the insulator body for engaging the convolutions of the heating coil. In the improvement of the present invention support rods have a locking projection disposed from a longitudinal surface thereof. The insulator body has a pair of support rod apertures extending therethrough, which have a rod support locking projection accommodation slots therein for initially receiving passage therethrough of the locking projection of the support rod. The locking projection on the support rod, upon initial insertion, is matingly disposed with respect to the support rod locking projection accommodation slot for passage therethrough and thereafter is disposed at a radial angle rotationally therefrom to prevent relative longitudinal movement between the insulator body and the support rod.
Patent CA-2051917-A1 (CA)
Inventor: ADKISON FRANK L
IPC: A22C17/00
Filed: 1991-09-20
Abstract: METAL MESH GLOVE CLEANSING APPARATUS Abstract of the Disclosure A device for cleansing metal mesh gloves is provided in order to remove particles of meat or the like embedded within the metal mesh of the gloves. The device includes elongated rollers which preferably counter-rotate with respect to each other and define an entry slot area within which the gloves are inserted for cleansing.
Patent CA-2054486-A1 (CA)
Inventor: BYMAN CARL
IPC: H02H11/00
Filed: 1991-10-29
Abstract: A method for reservation and interlocking in connection with the operation of an electric switching device (SDA 1) which is included in one of several bays belonging to a switch-gear.  The control between the bays is performed by means of a communication bus with a computerized serial system with one computer in each bay.  Operation of the switching device is allowed to take place only after a number of within-the-bay and external status checks.
Patent CA-2055565-A1 (CA)
Inventor: WIEGNER GEORG
IPC: A63C17/14
Filed: 1991-11-14
Abstract: In sport equipment in the form of short ski-like rollers for each foot, with a support as base for the shoe of the user and only one front wheel and one rear wheel each, a particularly compact and maneuverable construction of the equipment is achieved owing to the fact that the front wheel and the rear wheel and their axes are disposed within the longitudinal extent of the support.
Patent CA-2058445-A1 (CA)
Title: Stereoscopic viewing apparatus and method and related stereoscopic recording
Inventor: TRUMBULL DONALD E
IPC: G02B27/22
Filed: 1990-06-01
Abstract: A stereoscopic viewing apparatus (11) and a related method for providing a three-dimensional effect for the viewer (15) based on a side-by-side display on a conventional video screen (19) of related left and right images (17L, 17R) that are each horizontally compressed, and a stereoscopic video recording for providing such a side-by-side display. The apparatus transmits the displayed left image (17L) to the viewer's left eye and the displayed right image (17R) to the viewer's right eye, while horizontally expanding the compressed images and returning them to their original, natural proportions. The displayed side-by-side images (17L, 17R) both extend along the screen's entire vertical length, such that a three-dimensional effect is provided having the same two-dimensional proportions as the conventional video screen.
Patent CA-2058781-A1 (CA)
Inventor: LAU SAI K
IPC: F02C7/00
Filed: 1992-01-06
Abstract: 50,719 ABSTRACT         A ceramic protective coating system and process for applying the same is provided for superalloy base metal turbine components which are subjected to elevated exhaust temperatures and which exist in a corrosive fluid environment due to the use of fuels which form corrosive compounds upon combustion. The ceramic overcoat consists of at least one protective magnesium titanate of the group MgTiO3 and Mg2TiO4.
Patent CA-2061188-A1 (CA)
Title: Modular Test Tube Rack Arrangement
Inventor: LANDSBERGER DAVID
IPC: B01L9/06
Filed: 1992-02-13
Abstract: File No. C9121 ABSTRACT OF THE DISCLOSURE             MODULAR TEST TUBE RACK ARRANGEMENT      A plurality of test tube racks are disposed side by side and coupled together at their opposite sides via clamps to form a modular test tube rack arrangement.  A handle or handles engage(s) the clamps to provide a balanced pivot handle arrangement for transporting a modular set of connected racks.
Patent CA-2063489-A1 (CA)
Inventor: BREETZ MICHAEL
IPC: G01F23/26
Filed: 1992-03-19
Abstract: Abstract Device for detecting a liquid surface In the apparatus for detecting a liquid surface a transmitting antenna is connected to an oscillator having an amplifier downstream, receiving antenna has a selective amplifier, a Schmitt trigger and a monostable flip-flop downstream.
Patent CA-2065266-A1 (CA)
Title: Rigid fiber composite
Inventor: DUNSON SAMUEL E
IPC: D04H1/46
Filed: 1991-09-27
Abstract: ABSTRACT OF THE DISCLOSURE A method for manufacturing a rigid fiber composite material and the product thereof created by needling a composite of a non-woven blend of first fibers with a initial melting point with one or more other fibers with higher melting points that are interposed between two interentangled non-woven layers of the first fibers and then heating this composite to a level above the melting point of the first fibers forming a plasticized structure.
Patent CA-2066500-A1 (CA)
Title: Sod stacking machine
Inventor: ZINN JOHANNES
IPC: A01B45/04
Filed: 1992-04-21
Abstract: ABSTRACT OF THE DISCLOSURE          SOD STACKING MACHINE          A sod stacking machine includes a conveyor system for  receiving  sod pieces  from a  sod  harvesting  machine  and aligning the pieces in rows.   The sod pieces can be translated laterally from the conveyor to form a full layer for movement to a stack of the layers.   The full layer is then grasped and lifted simultaneously for movement to the stack.   The lifting is carried out by a planar lifting element which is a plurality of  screw  elements  mounted  thereon  and  rotatable  in a screw direction and a release  direction  simultaneously by a chain drive  system.     Each  screw  element  is  surrounded  by  a compressing device for engaging the sod around the screw as it is screwed into place.  The lifting device thus lifts all of the sod pieces simultaneously and transfers them to a pallet.          The device can be used either with rolled sod pieces or folded slab sod pieces.
Patent CA-2066532-A1 (CA)
Title: Pharmaceutical compositions
Inventor: ARVINTE TUDOR
IPC: A61P3/14
Filed: 1992-04-21
Abstract: The invention provides fibrillated calcitonin for use in treating calcium deficiency diseases.
Patent CA-2069283-A1 (CA)
Title: Preparation of malic acid
Inventor: RAMSEY SKIPPY H
IPC: C07B61/00
Filed: 1992-05-22
Abstract: 05-21(7815)A ABSTRACT There is disclosed a process for the hydration of an acid selected from the group consisting of maleic acid, fumaric acid, sodium hydrogen maleate and mixtures thereof to malic acid in an aqueous reaction mixture in excellent yields and with particularly high purity by performing the synthesis in the presence of sodium ions in the molar ratio of sodium ions to acid or salt thereof in the range of from 0.2 to about 0.5.
Patent CA-2069606-A1 (CA)
Inventor: SHIRKHANZADEH MORTEZA
IPC: F21V33/00
Filed: 1992-05-26
Abstract: Abstract Pointers are normally used in classrooms or instructional settings to draw attention to material displayed on a screen. In this invention the pointer has a light source close to its tip, controlled by the operator, to improve the effectiveness of the pointer in drawing attention to a particular point or or area on a screen.  The pointer may also have the means for generating intermittent light and sound to further enhance its function.