baber/WOPTO huggingface dataset:
Patent CA-2027145-A1 (CA)
Title: Metallocene catalysts with lewis acids and aluminum alkyls
Inventor: ELDER MICHAEL J
IPC: C08F4/60
Filed: 1990-10-09
Abstract: This invention is for a catalyst system comprising a neutral metallocene compound, an aluminum alkyl and a Lewis acid. The Lewis acid must be of sufficient acidity to ionize a neutral metallocene compound to form a cationic metallocene catalyst. The ligands of the Lewis acid should not be reactive with the metallocene cation.      Any metallocene catalyst compound having two cyclopentadienyl rings attached to a transition metal would be useful in this invention.      The invention is also for the process of using the catalyst system in polymerization of olefins. The metallocene is contacted with the Lewis acid. The aluminum alkyl is contacted with the olefin. The two mixtures are contacted with each other under polymerization conditions.
Patent CA-2028928-A1 (CA)
Title: Combined terry and porous fabric
Inventor: FEHER TIBOR
IPC: A41B11/14
Filed: 1990-10-30
Abstract: ABSTRACT OF THE DISCLOSURE           A  knitted  fabric  specially  designed  for making the crotch area of a panty-hose or the like undergarment.  The fabric comprises a  base yarn which is stretchable and made of synthetic material and a terry loop yarn  made of  liquid-absorbent cotton.          The two  yarns are  knitted together  to form  terry loops on the inside, with the base yarn defining  a plurality  of openings for air  circulation.   The  fabric  is  knitted on a large circular knitting machine,  with the  provision of  a yarn  guide which is completely adjustable  to precisely feed the yarn to the cylinder needles at the exact intended desired position.
Patent CA-2028979-A1 (CA)
Title: Exterior rearview mirror assembly
Inventor: PERRY WILLIAM M
IPC: B60R1/06
Filed: 1990-10-31
Abstract: EXTERIOR REARVIEW MIRROR ASSEMBLY               Abstract of the Disclosure An exterior rearview mirror assembly that is attached to the side wall of the door of a vehicle having a mirror shell housing mounted on the side wall and a mirror mounting bracket mounted in cantilever fashion on the side wall.  The mirror mounting bracket preferably comprises a body having a triangular shape cross section with first and second side walls forming a cavity, the cavity opening to a third side.  A plurality of truss walls are interposed between the first and second side walls of the mirror mounting bracket and are constructed and arranged to increase the damping characteristics and natural frequency of the mirror mounting bracket.
Patent CA-2034658-A1 (CA)
Title: Optical power amplifier with al203 with erbium doped active fiber
Inventor: GRASSO GIORGIO
IPC: H01P1/16
Filed: 1991-01-21
Abstract: An optical fiber power amplifier, particularly for telecommunication lines with optical fibers, including an active fiber doped with Erbium as a fluorescing substance, and with Al2O3 as refraction index modifying dopant. The fiber is pumped with a laser providing a wavelength higher than 520 nm and preferably, 980 nm. The amplifier has a particularly high amplification efficiency close to the theoretical maximum efficiency.
Patent CA-2036313-A1 (CA)
Inventor: LAW KWEI-NAM
IPC: D21B1/32
Filed: 1991-02-14
Abstract: A novel method, based on the rubbing action in a refiner, for disintegration and deinking mixtures of recovered or secondary fibers, primarily used newspapers and printing-writing papers, and mechanical pulps, such as stone groundwood pulp, refiner mechanical pulp, thermomechanical pulp, chemithermomechanical pulp and chemimechanical pulp, permitting to produce a new grade of pulp furnish of better quality and more economical for the production of newsprint without the use of conventional deinking equipment, is described.
Patent CA-2036709-A1 (CA)
Title: Expansion valve
Inventor: LASNIER DIDIER
IPC: G05D16/10
Filed: 1991-02-20
Abstract: The body (1) of the pressure-reducing device comprises opposed bores (8, 9) for the mounting of means of connection for entry (34) and for exit (46) and the outer end of the bore (3) forming a high-pressure chamber in which the regulation valve (7) is mounted is arranged to receive a means of connection (40) of a high-pressure manometer (41) forming a bearing surface for the spring (39) for loading the regulation valve (7), which comprises a frustoconical annular fitting (37) in which is force-fitted the rod (38) for coupling between the regulation valve (7) and the piston (13) delimiting the low-pressure chamber (12). 
<??>Application to various arrangements of pressure-reducing devices for industrial use. 
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Patent CA-2037582-A1 (CA)
Inventor: WAKATSURU KENJI
IPC: G11B7/257
Filed: 1991-03-05
Abstract: In accordance with the present invention, there are provided cycloolefin random copolymers composed of ethylene and cycloolefin and containing substantially no polyethylene, and processes for preparing the same. Optical disc substrates prepared from the above-mentioned copolymers are excellent in transparency and also capable of minimizing the occurence of errors in reading of the discs due to quality of the substrates used therefor.
Patent CA-2040192-A1 (CA)
Title: Modified crystalline aluminosilicate zeolites and process for their preparation
Inventor: SATO GORO
IPC: C01B39/02
Filed: 1991-04-10
Abstract: ABSTRACT OF THE DISCLOSURE     A process for the manufacture of a modified aluminosilicate zeolite is disclosed which comprises contacting a starting zeolite in an aqueous phase with a dealuminating agent at a pH value of lower than 4 in the presence of a soluble silica.  A novel zeolite composition is also disclosed which has increased acid and thermal stability.
Patent CA-2041264-A1 (CA)
Inventor: WORSLEY MICHAEL
IPC: C07C275/14
Filed: 1991-04-25
Abstract: "LOW MOLECULAR WEIGHT UREA-FORMALDEHYDE REACTION PRODUCTS AND PROCESS FOR THE PREPARATION THEREOF"     ABSTRACT OF THE DISCLOSURE           Low  molecular  weight  urea-formaldehyde  reaction products  are provided.    Such  products  exhibit  cold  water solubility.  They find use as a sustained nitrogen-release source for animals and plants.  A three-stage process is provided for preparing the reaction products.   The first stage comprises reacting  urea  and  formaldehyde  in  an  alkaline,  alcoholic solution.  Then the solvent is distilled off to form a melt.  In the final stage the melt is polymerized to form the cold water soluble, low molecular weight reaction product.
Patent CA-2042057-A1 (CA)
Title: Reduced calorie triglycerides in foods
Inventor: GIVEN PETER S JR
IPC: A23L27/00
Filed: 1990-09-18
Abstract: ABSTRACT           Triglycerides are esterified at the 1- and 3- positions with saturated, long chain fatty acids, such as stearic, and at the 2- position with a short chain acid, such as acetic.  These triglycerides provide fewer calories than those triglycerides commonly present in foods.  Food compositions which are lower in calories than the original compositions can thus be produced by replacing some or all of the fat with this type of triglyceride.
Patent CA-2042300-A1 (CA)
Title: Cased telescoped ammunition round
Inventor: MARTWICK WILFORD E
IPC: F42B5/045
Filed: 1991-05-10
Abstract: ABSTRACT OF THE DISCLOSURE A cartridge case 68 for a cased telescoped ammunition round 10.  Cartridge case 68 includes a hollow cylindrical casing 12 fabricated from a material which undergoes elastic deformation when round 10 is fired from a gun, a rear seal 20 and a front seal 22.  A control tube is secured to rear seal 20 and a primer is mounted to be in communication with the interior of control tube 24.  Casing 12 has an axis of symmetry 18 which is also the axis of symmetry of round 10, and control tube 24.  Seals 20, 22 each have side walls 48, 48' in which crimp grooves 56, 56' are formed.  Each crimp groove includes a cam surface 58, 58'.  Rear and front portions 14, 16 of casing 12 are crimped into grooves 58, 58'.  A projectile 26 provided with a booster piston 28 is mounted within round 10 with piston 28 being located within control tube 24.  The main propellant charge 38 is positioned around control tube 24 and round 26, and a booster charge is positioned with control tube 24.  When round 10 is fired, axial growth of casing 12 forces portion 14, 16 to ride up cam surfaces 58, 58' expanding them.  When the pressure within casing 68 returns to normal, the expanded parts of portions 14, 16 act to retract end seals 20, 22.
Patent CA-2043213-A1 (CA)
Title: Installation block for a sanitary device
Inventor: WEBER PETER
IPC: E04C2/52
Filed: 1991-05-24
Abstract: ABSTRACT OF THE DISCLOSURE    The installation block has a support frame 1 assembled from longitudinal and transverse sections 3, 2, as well as a molding 22 foamed into this frame.   Connections 5,  18, 19 for fastening a sanitary device 6, as well as for fastening the installation block on a building wall are arranged on the support frame 1.   The elements needed for supplying and discharging from the sanitary device  are  embedded  in  the  molding  22  made  from  expanded polystyrene foam.  In addition, the molding 22 holds the sections 3, 2 together, and forms a condensation water insulation for a flush tank 4 embedded in the foam.
Patent CA-2044101-A1 (CA)
Title: Gas assisted injection molding apparatus
Inventor: LOREN NORMAN S
IPC: B29C45/17
Filed: 1991-06-07
Abstract: A gas assisted injection molding apparatus of the type in which a supply of resin is introduced into a cavity in a mold at a resin injection location and gas injection means are provided to introduce gas into the mold cavity at a gas injection location removed from the resin injection location to assist the resin in filling out the mold cavity. The gas injection means includes a bore in the mold communicating with the mold cavity, a pin having a size to fit slidably in the bore and including a central axial passage for delivery of gas into the mold cavity through the pin, a power cylinder assembly mounting the pin for movement between an advanced gas injection position in which the pin is positioned in the bore with its forward tip in communication with the mold cavity and a retracted position in which the mold cavity is vented through the bore, and means defining an annular edge on the pin operative to remove obstructions with each forward movement of the pin from its retracted position to its advanced position.
Patent CA-2046274-A1 (CA)
Title: Method for planning radio cells
Inventor: GUNMAR KRISTER
IPC: H04W16/18
Filed: 1990-02-26
Abstract: (57) Abstract The present invention relates to a method for planning radio cells. The method utilizes an exclusion matrix calculated on the basis of measured field strengths and an iterative allocating algorithm, which allows an adaptation of the cell planning to pre-vailing traffic demand. The method includes the following steps: the traffic demand is geographically estimated; an acceptable coverage of the traffic demand is produced with the aid of a number of cells with suitable transmitter powers and antenna ar-rangements; each cell is allocated a number of channels, which corresponds to the estimated traffic demand, having regard to a margin for acceptable blocking; coverage and interference measurements are carried out for the cells, which measurement results are stored in a measurement data base; an exclusion matrix is calculated on the basis of the measurement results, which matrix represents the interaction between the cells in the system; an allocating algorithm is iterated, which algorithm, by utilizing a ran-dom technique, provides different collections of channel allocations for the cells; if the channel allocation is not possible with re-gard to the number of channels in a given frequency band, a new attempt is made and the subsequent steps are repeated; if the number of channels was sufficiently high, a radio cell design is obtained which is acceptable from the point of view of interfer-ence and the point of view of blocking. The present invention also provides a method for constructing the exclusion matrix and a method for determining uplink interferences.  . . _   .. ...  _ __   .    .    .
Patent CA-2047300-A1 (CA)
Title: Prevention of oxidation in petrochemical extraction solvents
Inventor: GATECHAIR LESLIE R
IPC: C07D471/10
Filed: 1991-07-17
Abstract: PREVENTION OF OXIDATION IN PETROCHEMICAL EXTRACTION SOLVENTS            Abstract of the Disclosure A wide variety of hindered amine compounds are effective as antioxidant stabilizers to prevent the oxidation of liquid hydrocarbons and of oxygenated compounds, such as sulfolane or tetraethylene glycol, used as extraction solvents in the petroleum industry.
Patent CA-2047619-A1 (CA)
Title: Bus mounted capacitor expulsion-type fuses
Inventor: VEVERKA EDWARD F
IPC: H01H85/042
Filed: 1991-07-23
Abstract: An electrical fault protective device for providing power  interruption  in  electrical  circuits  rated  at 10,000  amperes  and  above.   The  device  comprises  a single- or double-vented expulsion-type fuse, connected at one vented end to a hollow bus and at the other end to a conductive expansion chamber for a double-vent fuse or an  electrical  contact  for  a  single-vent  fuse.   A spring  located in the hollow bus  is attached to the fusible link for pulling the fusible link from the fuse tube to rapidly extinguish the arc when the fuse blows. The fuse tube is also retractable into the hollow bus when the fuse blows to provide a visual indication of fuse operation and to relieve the dielectric stress on the fuse tube.
Patent CA-2048964-A1 (CA)
Title: Set screw
Inventor: CORRIGAN NIALL
IPC: F16B35/00
Filed: 1991-08-12
Abstract: This invention relates to a set screw comprising a shank having external threads and a work-engaging end portion integrally formed at one end of the shank.  The work-engaging end portion has a frustohemispherical outer surface comprising a plurality of circumferentially spaced serrations in the form of teeth.  Each of the teeth comprises a ramp extending outwardly from a root to a crest thereof with the ramp being inclined in a direction which is opposite to the direction of rotation of engaging the set screw in a workpiece.  A cavity is formed in the outer extremity of the work-engaging end portion.  The cavity cooperates with the frustohemispherical outer surface to form therebetween an annular wedge.  The work-engaging end portion can be readily formed by a forging process.
Patent CA-2054811-A1 (CA)
Inventor: TANAKA TAKERU
IPC: B62D1/19
Filed: 1991-11-01
Abstract: This invention relates to a shock absorbing type steering shaft for steering front wheels of a vehicle by converting rotation of a steering wheel to reciprocation of a tie rod, and to a method of manufacturing the steering shaft.      The steering shaft has energy absorbers formed by filling a synthetic resin between the shaft and an outer sleeve. This steering shaft comprises a plastic metal pipe including, in a region remote from the steering wheel, a flat portion for connection to the outer sleeve, and a plurality of annular grooves to be filled with the synthetic resin. In a region adjacent the steering wheel, the plastic metal pipe includes an upper bearing mount, a screw for engaging a bearing retaining nut, a serrated shaft for engaging the steering wheel, and a screw for engaging a retainer nut, all defined as integral parts of the plastic metal pipe and arranged in the stated order toward an extreme end of the pipe. This steering shaft is lightweight, and may be manufactured in a reduced shaping time and at low cost.
Patent CA-2059958-A1 (CA)
Title: Laser welding of galvanized steel
Inventor: HILLMAN THOMAS J
IPC: B23K26/12
Filed: 1992-01-23
Abstract: LASER WELDING OF GALVANIZED STEEL            Abstract of the Disclosure A continuous laser beam welding process is provided in which galvanized steel sheet members having buried zinc-coated bonding surface regions are welded in an oxygen-enriched region, reducing the porosity in the product weld nugget.
Patent CA-2062373-A1 (CA)
Title: Natural gas steam turbine system operating with a semi-open cycle
Inventor: GUILLET REMI
IPC: F02C6/18
Filed: 1992-03-06
Abstract: IN THE CANADIAN PATENT AND TRADEMARK OFFICE                       PATENT APPLICATION   entitled:       A NATURAL GAS STEAM TURBINE SYSTEM OPERATING              WITH A SEMI-OPEN CYCLE   in the name of: Remi GUILLET   assignee:    GAZ DE FRANCE                 ABSTRACT OF THE DISCLOSURE      The system comprises at least one combustion chamber, an expansion turbine, an air compressor driven by the expansion turbine, and means for coupling the expansion turbine to at least one external receiver of mechanical energy.  The system further includes means for injecting water to constitute a thermal ballast in the combustion chamber, the quantity of compressed air used remaining close to the quantity of oxidizing air required for stoichiometric combustion.  These additional water injection means comprise: a) a mass and heat exchanger for exchanging mass and heat between the combustion products from a condensation recuperator placed on the path of the exhaust gases from the expansion turbine and incoming atmospheric air -to enable the air to be pre-moistened prior to entering the compressor; and b) devices for injecting steam and liquid water between the outlet from the air compressor and the inlet to the burner, or into the combustion chamber after the combustion zone and before the first blades of the expansion turbine, the injected steam being produced by a steam recuperator-generator-superheater disposed on the exhaust gases immediately after they leave the expansion turbine, and the liquid water being obtained by recycling the condensed water produced in the condensation recuperator.
Patent CA-2064339-A1 (CA)
Title: High-velocity thermal spray apparatus
Inventor: DIETIKER MARKUS
IPC: B05D1/08
Filed: 1992-03-23
Abstract: ABSTRACT OF THE DISCLOSURE   A  thermal  spray  gun having an advanced,  streamlined design which simplifies  assembly  of  the  gun  components  and  reduces  maintenance downtime.   The  thermal  spray gun has a fuel/oxidant gas nozzle with a plurality of oxygen outlets arranged  in a ring upon a discharge face. Three  alternative  fuel  gas  outlet  configurations  provide  a  combustion flame within a barrel having an inlet adjacent the fuel/oxidant gas nozzle discharge  face.   Powdered  feedstock  is  supplied  through  a  centrally disposed  feedstock  injector  and  is heated  by  the  combustion  flame. Oxidant gas, fuel gas and powder feedstock are simultaneously discharged into the barrel, through a single plane perpendicular to the direction of gas and feedstock flow.
Patent CA-2065982-A1 (CA)
Title: Buffer apparatus and driving system
Inventor: VAN LAAR GERARDUS J C
IPC: B65G21/20
Filed: 1992-04-14
Abstract: ABSTRACT            An apparatus for buffering or temporarily storing articles, comprising:        - a feed for the articles; - at least one endless flexible member movable past the feed;        - doglike elements which engage the articles and between which the articles are transported, and which ele-ments are movable together with the flexible member;        - one or more guide members for guiding the flexible member during changes of direction;        - a discharge for discharging an article from between two doglike elements; and - means for diminishing impact to the articles, wherein the guide members are movable relative to feed and/or discharge.
Patent CA-2066464-A1 (CA)
Title: Preparation process of .alpha.-aspartyl-l-phenylalanine methyl ester
Inventor: HIGUCHI CHOJIRO
IPC: A23L27/30
Filed: 1992-04-21
Abstract: .alpha.-L-Aspartyl-L-phenylalanine methyl ester (.alpha.-APM) is prepared by catalytic hydrogenation of N-benzyloxy-carbonyl-.alpha.-L-aspartyl-L-phenylalanine methyl ester (Z-.alpha.-APM).  The catalytic hydrogenation is conducted in an aqueous suspension containing the Z-.alpha.-APM in the form of particles whose average particle size is not greater than 800 µm.  The starting Z-.alpha.-APM may contain up to 30 wt.% of its .beta.-isomer provided that the process additionally includes recrystallization of the .alpha.-APM, collection of the .alpha.-APM by filtration and recycling of the filtrate for use in the aqueous suspension of Z-.alpha.-APM.
Patent CA-2069704-A1 (CA)
Title: Discoidal array for filter connectors
Inventor: JOHNESCU DOUGLAS M
IPC: H01R13/719
Filed: 1992-05-27
Abstract: ABSTRACT OF THE DISCLOSURE A capacitor array for filter connectors includes a stamped and formed ground resilient metal plate. Integral tines are provided to establish a solderless electrical connection between the plate and a connector shell. The filter elements are discoidal capacitors having cylindrical inner and outer electrode portions. The filter assembly is completed by soldering the outer electrode portions to the ground plate, while a solderless electrical connection between the inner electrodes and the feedthrough contacts of a connector is established by providing compliant sections on the contacts.          A pi filter array is formed using two of the ground plates.     WWB0035-ARRAY.PCT
Patent CA-2070761-A1 (CA)
Title: In situ polymer alloys and microcompounds, process for their manufacture and use thereof
Inventor: MUELHAUPT ROLF
IPC: C09J177/00
Filed: 1992-06-09
Abstract: ABSTRACT OF THE DISCLOSURE      A polymer mixture reinforced by an in situ, melt-poly-merized microphase whereby the rigidity of the base material is increased, a process for manufacturing same, and use thereof for providing reinforced compositions and articles in which the polymer mixture is prepared by polymerizing a component B in a melt of a component A composed of at least one thermoplastic polymer.  Component B is composed of at least one compound having the structure           .          The reaction of component B in a melt of component A results in linear, branched or cross-linked, high or low molecular weight polymers constituting a microphase.  Preferably, the microphases have the form of microfibers.  In the structure of component B, X is NH2, NHR3, OH or an N-substituted, Y-acti-vated lactam of the   type which is activated with an electrophilic substituent Y, where Y is CO, SO2, or R5P=O; R1, R2 and R4 are bivalent or multivalent aliphatic-, aromatic-, heterocyclic- or heteroatom-containing segments, with R2 and R4 preferably being bivalent aliphatic or aromatic radicals (CH2)z in which l<z<15; R3 and R5 are aliphatic, cycloaliphatic or aromatic radicals; and n and m are integers for which l<m and n<5, and preferably m=n=1.
Patent CA-2073146-A1 (CA)
Title: Octadecyl-[2-(n-methylpiperidino)-ethyl]-phosphate and a process for its preparation
Inventor: SCHUMACHER WOLFGANG
IPC: A61K31/685
Filed: 1992-07-03
Abstract: Octadecyl-[2-(N-methylpiperidino)-ethyl)-phosphate and a process for its preparation. This compound has an anti-tumour effect. Four different preparative processes for the compound are disclosed. Also disclosed is a new purification process. In combination the preparative processes and the purification process are simpler and more effective than prior art processes.
Patent CA-2073458-A1 (CA)
Title: Composition and use of substituted 3-thio-2-propynenitriles as an industrial antimicrobial
Inventor: DEFORD CONNIE I
IPC: C07D249/04
Filed: 1991-01-11
Abstract: Substituted 3-thio-2-propynenitriles are prepared which correspond to the formula R-S-C=C-C=N, wherein R is an alkyl, cyclic alkyl, aryl, or heterocyclo group. These compounds have been found to exhibit a high degree of antimicrobial activity in industrial and commercial applications and compositions containing these compounds are so employed.