baber/WOPTO huggingface dataset:
Patent CA-2082073-A1 (CA)
Title: Method of producing platelets of borides of refractory metals
Inventor: NADKARNI SADASHIV K
IPC: C01B35/04
Filed: 1991-05-22
Abstract: A method of producing platelets of refractory metal borides and the platelets so-produced. The method involves reacting an oxide of a refractory metal or a precursor thereof and B2O3 or a precursor thereof with carbon or a carbon precursor in the presence of a small amount of an alkali metal oxide, such as sodium oxide or potassium oxide, or a precursor. The reaction should take place under an atmosphere of an inert (non-reactive) gas. The alkali metal oxide allows the reaction temperature to be brought below 1800 ·C, which reduces impurities in the product, and affects the shape of the particulate boride product, resulting in the formation of platelets. The carbon used in the reaction is preferably derived from calcined anthracite coal or petroleum coke because such carbon sources permit the reaction to be carried out at lower temperatures. The platelets of the refractory metal borides so-produced can be used as reinforcements for ceramic or metal matrix composites or for other purposes.
Patent CA-2082238-A1 (CA)
Inventor: HOFFMANN ERNST
IPC: B21D15/04
Filed: 1992-11-05
Abstract: In a process for the continuous production of helical or annular corrugated, thin-walled, in particular longitudinally welded metal tubes, in which a freely rotating roller ring in a turntable corrugation head, which is eccentric with respect to the smooth metal tube, rolls against the smooth surface of the metal tube to produce the corrugation, and the metal tube is transported by a traction device that grips the smooth and/or corrugated metal tube, the force acting on the roller ring is constantly measured, and the rotation speed of the head is controlled as a function of the measured force.
Patent CA-2082252-A1 (CA)
Title: Diacyl derivatives of phenolic thioether amines useful in treating pigmentation disorders
Inventor: JIMBOW KOWICHI
IPC: C07C323/41
Filed: 1992-11-05
Abstract: ABSTRACT      Novel diacyl derivatives of phenythioether amines are provided in accordance with the following formula (I):                                           (I) wherein R1 is H or C1 - C8 alkyl:         R2 is H or C1 - C8 alkyl; R3 is H, C1 - C8 alkyl or C1 - C8 alkanoyl, R4 is C1 - C8 alkanoyl, with the proviso that one of R1, R2 or R3 is other than H, and that OR4 is in the ortho or para position. These compounds are particularly useful in pharmaceutical compositions for the treatment of pigmentation disorders.
Patent CA-2083129-A1 (CA)
Title: Electric arc furnace arrangement for producing steel
Inventor: BERGER HARALD
IPC: F27B1/02
Filed: 1992-11-17
Abstract: There is disclosed an electric arc furnace for the production of steel by melting scrap, in particular iron scrap, and/or sponge iron and/or pig iron as well as fluxes in a furnace vessel, into which at least one graphite electrode projects, which is displaceable in its longitudinal direction, wherein an electric arc is ignited between the graphite electrode and the charging stock. To achieve a particularly high energy input, the graphite electrode projects into a lower part of the furnace vessel from aside and the lower part, in the region of the graphite electrode, has an enlargement radially protruding outwardly relative to the upper part.
Patent CA-2085379-A1 (CA)
Title: Tetramethylpiperidine compounds for use as stabilisers for organic materials
Inventor: BORZATTA VALERIO
IPC: C08K5/3492
Filed: 1992-12-15
Abstract: Novel tetramethylpiperidine compounds for use as stabilisers for organic materials. Abstract of the disclosure The present invention relates to novel tetramethylpiperidine compounds of the formula (I)                  (I) in which R1 is e.g. hydrogen or methyl, R2 and R3 are e.g. -(CH2)2-,R4 is e.g. -CO-, -COCO- or -COCH2CO-, n is e.g. 1 and R5 is e.g. hydrogen or allyl.   These compounds are suitable for use as light stabilisers, heat stabilisers and oxidation stabilisers for organic materials.
Patent CA-2085391-A1 (CA)
Title: Magnetic tread blast cleaning machine
Inventor: WATKIN ROBERT B
IPC: B24C9/00
Filed: 1992-12-15
Abstract: Abstract Of The Invention The blast machine consists of a self-propelled vehicle including a pair of independently driven magnetic treads capable of adhering to and traversing ferromagnetic vertical surfaces and the underside of ferromagnetic horizontal surfaces.  The blast machine includes a blast unit having a pair of blast wheels supported on the magnetic treads for propelling the blast unit over ferromagnetic surfaces.  The blast unit is mounted so as to be able to pivot about two axes relative to the treads so that the treads can follow and traverse curved surfaces without changing the orientation of the blast unit.  The treads can also flex allowing them to traverse surfaces having varying contours.          Moreover, the angle of the blast unit relative to the surface to be cleaned can be adjusted to ensure the proper orientation for blast cleaning.  The blast unit includes a unique mechanism for retrieving spent abrasive and debris from the surface and a separator for separating the reusable abrasive from the debris when the unit is oriented either vertically or upside down.
Patent CA-2086099-A1 (CA)
Title: Process and apparatus for dehydrogenating alkanes
Inventor: SERRAND WILLIBALD
IPC: F28D13/00
Filed: 1991-06-25
Abstract: An alkane-containing feedstream is passed through one or more tubes, which may contain alkane-dehydrogenation catalyst, immersed in a bed of fluidized particles. The bed is at an elevated temperature which maintains the temperature within the tube(s) at an alkane-dehydrogenation temperature. The particles may be inert, chemically active and/or catalytically active. In one embodiment, cracking catalyst particles are circulated beween a reaction zone (wherein they contact a cracker feedstock which is converted to cracked hydrocarbon products) and a regenerator (22) (wherein carbonaceous deposits on the catalyst particles are exothermically removed by contact with an oxygen-containing gas (24)). Hot regenerated particles from the regenerator (22) are recirculated (27) to the reaction zone for re-use therein. At least some of the circulating cracking catalyst (33) is passed in indirect heat-exchange relationship (42) with an alkane-containing feedstream (44) within a tube (42) whereby alkanes are endothermically dehydrogenated (e.g., to olefins) and the cracking catalyst is cooled.  Preferably, the tube (42) contains a dehydrogenation catalyst, and the latter may be circulated between an alkane-dehydrogenation zone (42) and a catalyst re-activation zone (61). In the latter zone, carbonaceous deposits are exothermically removed by an oxygen-containing gas.
Patent CA-2086953-A1 (CA)
Inventor: KASAHARA FUMIO
IPC: F16H48/06
Filed: 1993-01-08
Abstract: ABSTRACT    Herein disclosed is a power transmission which comprises: two housings coupled to rotate relative to each other; an input shaft rotatably borne in one of the housings; an output shaft rotatably borne in the other housing: two transmission paths coaxially arranged on the axis of the relative rotations of the two housings; a first transmission mechanism for transmitting rotations between the input shaft or the output shaft and the two transmission paths to rotate the two transmission paths in opposite directions: and a second transmission mechanism for transmitting rotations between the other of the input shaft or the output shaft and the two transmission paths to rotate the two transmission paths in the opposite directions and for absorbing the difference, which is caused by the relative rotations of the two housings, between the rotating speeds of the two transmission paths.
Patent CA-2088145-A1 (CA)
Title: Channel electron multiplier phototube
Inventor: SCHMIDT KENNETH C
IPC: H01J43/24
Filed: 1991-05-13
Abstract: A channel electron multiplier phototube having a channel electron multipli-er, a transparent faceplate, and an anode assembly. The channel electron multiplier includes an insulating body (32) having a curved passageway extending there-through, A photoemissive element (36a), and a secondary emissive dynode material is on the walls of the passageway. The passageway, together with a photoemission film of the photocathode assembly and the anode (42) of the anode assembly define an evacuated closed region. Preferably, the electron multiplier is a monolithic cer-amic body (32).
Patent CA-2091336-A1 (CA)
Title: Cap for a Shaft
Inventor: GUGGEMOS HORST
IPC: E03F5/08
Filed: 1991-10-23
Abstract: To prevent surface water penetrating into a shaft, the invention calls for a cap (5) with a hollow body (9) made of water-tight material to be fitted over the end of the shaft, the cavity in the hollow body (9) being joined via ducts (11) with the part of the shaft below the cap.  Located in the ducts (11) are closure elements (12) consisting of buoyant spheres acting in conjunction with a valve seat (13), the spheres closing off the ducts (11) in the cap body (9) if the water level in the cap body rises.
Patent CA-2092361-A1 (CA)
Inventor: TAM RAYMOND T
IPC: F24H1/48
Filed: 1993-03-24
Abstract: ABSTRACT OF THE DISCLOSURE       A multiple boiler has at least two separate heating systems incorporated therein.  Whereas boilers with two heating supplies have been known, they have been complicated systems that require heating to occur outside a water tank.  The multiple boiler has an insulated water tank with a heater to heat the water in the tank without circulating water outside the tank.  At least one circulating coil is located in the tank in heat exchange relationship with water in the tank.
Patent CA-2095765-A1 (CA)
Inventor: ALLPORT DOUGLAS C
IPC: G09F3/14
Filed: 1993-05-07
Abstract: ABSTRACT           A fastener for retaining an article to an object,  said fastener comprising a body having first retaining means to non-releasably retain said article and second retaining means to non-releasably retain said object.     Preferably  the  fastener  is  of  unitary construction  and  formed  of  a  resiliently  flexible material such as polyethylene. The fastener provides for improved security, convenience and for the display of advertising material.
Patent CA-2097426-A1 (CA)
Title: Method for the diagnosis of chronic lower back and cervical pain
Inventor: CAMERON BRUCE M SR
IPC: G01N33/53
Filed: 1991-11-15
Abstract: Methods of diagnosing and monitoring chronic back and cervical pain are disclosed. The methods involved subjecting a body fluid sample from a patient suspected of having chronic lower back or cervical pain to two-dimensional electrophoresis or an immunoassay and measuring relative amounts of protein or proteins which increase or decrease in concentration as compared to a standard control. Also disclosed are kits for use with the diagnostic methods.
Patent CA-2097895-A1 (CA)
Inventor: HENRY RANDALL R
IPC: H01R24/50
Filed: 1993-06-07
Abstract: ABSTRACT:     An electrical connector, such as a miniature UHF connector, and a method of manufacturing features the provision of a relatively heavy metallic shell (12) containing a dielectric insert (30) holding a signal contact (44) coaxially therewithin and having an opening (22) with a separate insert (52) and grounding element (60) fitted in the said opening to enclose the interior of said shell, the said grounding element including a plurality of fine posts (64) adapted to fit in holes in a circuit board to ground the said connector with the said shell elements fitted together in a ready assembly to provide an enclosure shielding the signal path through the said connector from radiation external to the said shell and shielding the exterior of the said shell from radiation from within the said shell, the method including forming and processing the shell and said grounding element separately with variations in the positioning and size and shape of the said posts to fit the fingerprint of a variety of assemblies.
Patent CA-2101578-A1 (CA)
Title: Desodorisant des effluents de papetrie a base d'ester d'acide undecylenique
Inventor: CAUPIN HENRI-JEAN
IPC: A61L9/01
Filed: 1993-07-29
Abstract: L'invention a pour objet l'usage des esters de l'acide  undécylénique,  à  savoir  des  esters  alkyliques, polyoxyalkyléniques renfermant 2 à 10 motifs  oxyalkylène, alkyliques  en  C1-C12  et des  esters de polyoxyéthylène, polyoxypropylène et poly(oxyéthylène)(oxypropylène)  comme désodorisant  des effluents  de  papeterie.    L'invention concerne également des compositions caractérisées en ce qu'elles sont constituées soit d'un mélange d'au moins deux de  ces  esters,  soit d'un de  ces  esters  associé à  un excipient acceptable.
Patent CA-2104384-A1 (CA)
Inventor: HENDEL HORST
IPC: H01H11/04
Filed: 1992-02-05
Abstract: The contact element (10) disclosed is made of round wire which is bent in the shape of a hairpin to give two parallel sides (11, 12), at least one of which acts as a weld-on terminal pin. The bent zone between the two sides is stamped flat to give a common contact zone (14) with a plane surface and fitted with a contact piece. The invention thus makes it particularly simple to produce high-current contacts with circuit-board terminals.
Patent CA-2105608-A1 (CA)
Inventor: MALBREL CHRISTIAN
IPC: A61L27/50
Filed: 1993-09-07
Abstract: Abrégé IMPLANT INTRA-OCULAIRE DE RESTAURATION OU CORRECTION SPECTRALE Implant intra-oculaire, destiné à une insertion et mise en place dans l'oeil d'un patient, comprenant, d'une part une partie optique destinée à être traversée par la lumière incidente reçue par la cornée dudit oeil, constituée d'au moins un matériau transparent incorporant un adjuvant de transmission lumineuse, biocompatible avec les milieux internes dudit oeil, et d'autre part d'une partie haptique destinée à assurer le support de la partie optique dans l'oeil, caractérisé en ce que l'adjuvant de transmission lumineuse comprend au moins une substance filtrante, apte à modifier de manière contrôlée le spectre d'énergie de la lumière transmise par le matériau transparent, dans une bande sensible pour l'oeil dudit patient, commençant à une valeur au moins égale à 350 nm, en fonction d'une courbe de sensibilité lumineuse prédéterminée pour l'oeil dudit patient. Figure 1.
Patent CA-2109784-A1 (CA)
Title: Process and apparatus for removing solutes from solutions
Inventor: DESAI SATISH
IPC: B01D61/16
Filed: 1993-11-23
Abstract: ABSTRACT OF THE DISCLOSURE An improved process and system for treating a solution of a solute which can be concentrated by forcing a portion of the solvent through a semi-permeable membrane and converted to the solid phase by increasing the concentration of thesolute in the solution.  A phase conversion device receives the solution and converts a portion of the solute to the solid phase.  The resulting mixture is passed through a separation device such as a filter to remove the solids from the remaining solution. A concentration device such as a reverse osmosis, electrodialysis or ultrafiltration device treats the resultant solution discharging a permeate of solvent essentially free of solute and a concentrate enriched in solute.  A recycle line recycles the concentrate to the phase conversion device to advance precipitation of the solute by driving the solubility equilibrium toward precipitation.
Patent CA-2111954-A1 (CA)
Title: Synthetic aggregate and landfill method
Inventor: SMITH CHARLES L
IPC: C04B18/16
Filed: 1992-06-15
Abstract: An abrasion resistant synthetic aggregate made from an intimately intermixed combination of lime, fly ash and sulfate/sulfite sludge (e.g. FDG sludge), mixed to the point where the mixture is nearly optimum density and thixotropic or compressible or non-compressible and plastic. This mixture is placed in a landfill. After a relatively brief cure period, the landfill is ripped and the material is crushed and graded. The aggregate, which in some instances may qualify as a lightweight aggregate, has a Los Angeles Abrasion Resistance of less than 60 %, and may in some cases be less than 50 % (medium particles passing) according to that test.
Patent CA-2113252-A1 (CA)
Inventor: SHAH GOVIND
IPC: G01S17/89
Filed: 1992-07-07
Abstract: An optical target is acquired by an optical scan-ning system according to an in-band target frequency in an input signal from an opti-cal scanning device. Both the in-band energy level and the out-of band energy level of the input signal from the opt-ical scanning device are de-termined. These two energy levels are compared and a possible detection of the target is determined according to this comparison. A minimum threshold of in-band energy is required in order for the possible detection to be confirmed. The input signal may have various frequencies due to various amounts of magnification of the acquisition target as scanned by the optical scanning device. Thus the input signal may represent the target as various frequencies due to the various amounts of magnification. The various amounts of magnifica-tion of the acquisition target are due to various scanning distances between the scanning device and the acquisition target. Magni-fication compensation is therefore performed by providing an amount of frequency shifting of either the center frequency of a fil-ter or the input signal frequency. The amount of frequency shifting is determined according to scanning distance. The frequency shifting is accomplished by performing digital-to-analog conversion on the digital input signal at a flexed frequency. The output og the digital-to-analog converter is applied to an analog-to-digital converter where the analog signal is resampled at a varying re-sampling frequency. When the resampling frequency differs from the sampling frequency the signal is frequency shifted. Alter-nately, the resampled signal may be buffered and clocked out, in which case the frequency of the input signal is effectively shift-ed. In order to vary the amount of frequency shift according to the scanning distance, the resampling frequency applied to the analog-to-digital converter is varied according to the scanning distance. The relationship between the various resampling frequen-cy and the varying scanning distances may be selected to cause the various input frequencies representative of a scanned acquisi-tion target to be shifted to a single predetermined fundamental frequency.
Patent CA-2114180-A1 (CA)
Title: Sucralose Pentaester Production
Inventor: NAVIA JUAN L
IPC: C07H13/04
Filed: 1994-01-25
Abstract: A process for producing substantially pure sucralose pentaester from a mixture of 6-O-acyl-4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose in a reaction medium comprising a tertiary amide, wherein said process comprises the steps of:   (a)   recovering the 6-O-acyl-4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose from said mixture;   (b)   peracylating the 6-O-acyl-4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose product of step (a) to produce thereby 4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose pentaester; and (c) crystallizing the 4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose pentaester product of step (b) to produce substantially pure 4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose pentaester.
Patent CA-2114912-A1 (CA)
Inventor: SMITH HERBERT E
IPC: F23M9/02
Filed: 1994-02-03
Abstract: A water heater comprising a tank defining a water chamber, a combustion chamber for heating water in the water chamber, and a combustion air inlet pipe including an outlet end communicating with the combustion chamber.  The inlet pipe also includes an inlet end having a longitudinal axis, and a plate in the combustion air inlet pipe adjacent the inlet end, which plate extends outwardly of the inlet end along the longitudinal axis.
Patent CA-2118459-A1 (CA)
Title: Polymerization catalyst for the preparation of poly (isocyanates)
Inventor: MELTZER AARON D
IPC: C08G18/02
Filed: 1994-10-19
Abstract: A POLYMERIZATION CATALYST FOR THE  PREPARATION OF POLY(ISOCYANATES) ABSTRACT OF THE DISCLOSURE     An improvement in the process of preparing nylon-1 by the polymerization of isocyanates is disclosed. Accordingly, the improvement comprising using in the process a catalyst conforming to (X)n Me(OR)m where Me is titanium or zirconium, X is chlorine or bromine atom, R is an aliphatic radical having 1 to 20 carbon atoms and where the sum of m = n is 4 with the proviso that where Me is titanium n is 1 or 2, and where Me is zirconium n is 1-4.
Patent CA-2118563-A1 (CA)
Title: Process for the production of moldings of polyurethane foams
Inventor: NEUHAUS ALFRED
IPC: C08J9/08
Filed: 1994-03-08
Abstract: A PROCESS FOR THE PRODUCTION OF MOLDINGS OF POLYURETHANE FOAMS            ABSTRACT OF THE DISCLOSURE     The present invention relates to a process for the production of polyurethane foam moldings having a compact surface skin and a density of at least 150 kg/m3 comprising foaming a polyurethane-forming starting mixture inside a mold. The starting mixture comprises organic blowing agents which correspond to one or both of the following general formulas:          HOOC-R-COOH                  (I) wherein:      R      represents a CH2 group or a CH=CH group; and            (II) wherein:  R1 and R2 independently of one another represent either a hydrogen atom or a C1-6 alkyl radical wherein the hydrogen atoms may be partly substituted by OH groups.
Patent CA-2121514-A1 (CA)
Title: Absorbent composition including a magnetically-responsive material
Inventor: CHEN FRANKLIN M C
IPC: A61L15/42
Filed: 1994-04-18
Abstract: Disclosed is an absorbent composition including a hydrogel-forming polymeric material and a magnetically-responsive material; disposable absorbent products, including the absorbent composition, intended for the absorption of body fluids; and a method for incorporating the absorbent composition into disposable absorbent products. The method entails using a magnetic field to contact the magnetically-responsive material present in the absorbent composition.  The absorbent composition remains substantially unmagnetized when a magnetic field is absent.
Patent CA-2123222-A1 (CA)
Title: Gram-negative bacterial vaccines
Inventor: DEARWESTER DONALD A
IPC: A61K39/102
Filed: 1992-11-13
Abstract: There is provided by this invention a novel method of preparing Gram-negative bacterial vaccines. The method comprises providing a concentrated Gram-negative bacterial antigenic preparation, adsorbing the preparation with a mineral carrier capable of binding free-endotoxin in the antigenic preparation in an amount effective to produce optimal binding of endotoxin and antigen and diluting the adsorbed preparation for use in a vaccine. Also provided by this invention is a vaccine produced by the method of this invention. Also provided by this invention is a Gram-negative bacterial vaccine wherein the improvement comprises a concentration of mineral carrier in the vaccine which is less than 5.0% v/v. Also provided by this invention is a Gram-ne-gative bacterial vaccine comprising a mineral carrier wherein the amount of the mineral carrier in the vaccine has been predetermined by the method of this invention. Also provided by this invention is a method of vaccinating an animal against Gram-negative bacterial infections comprising administering to the animal an effective amount of a vaccine of this invention.
Patent CA-2125063-A1 (CA)
Title: Layered plasma polymer composite membranes
Inventor: BABCOCK WALTER C
IPC: B01D53/22
Filed: 1994-06-03
Abstract: LAYERED PLASMA POLYMER COMPOSITE MEMBRANES    ABSTRACT         Layered plasma polymer composite fluid separation membranes are disclosed, which comprise alternating selective and permeable layers for a total of at least 2n layers, where n is ?2 and is the number of selective layers.