baber/WOPTO huggingface dataset:
Patent CA-2025106-C (CA)
Title: Coupling for the transmission of alternating torques
Inventor: MELCHIOR JEAN F
IPC: F01L1/344
Filed: 1990-01-05
Granted: 1995-02-14
Abstract: One of the driving and driven parts of the  coupling  is connected to a cylinder (10) and the other to a piston  (11) which delimit therebetween two  antagonistic  chambers  (13, 14).  The latter have a substantially constant volume,  are filled with a practically  incompressible  hydraulic  liquid and are interconnected through two  unidirectional  circuits (18,  19)  which  have  opposite  directions  and   each   a substantially constant volume.  Distributing means (22)  are so arranged as to either bring into action one or the  other of the unidirectional circuits, or  to  neutralize  both  of them.
Patent CA-2036163-C (CA)
Title: Novel beta-lactam compounds and their production
Inventor: SUNAGAWA MAKOTO
IPC: C07D477/20
Filed: 1991-02-12
Granted: 2001-06-19
Abstract: The present invention provides a compound of the formula: (see above formula) wherein R0 is a hydrogen atom or a protective group for hydroxyl, R1 is a lower alkyl group, R2 is a protective group for carboxyl or a negative charge, R3 is a hydrogen atom or a protective group for amino, R4 is a lower alkyl group or a substituted lower alkyl group, k is an integer of 0 to 4, X is an acid residue or an intramolecular COO when R2 is a negative charge and Q~ is a quaternary nitrogen atom-containing group represented by either one of the formulae (1) to (4): (see formula 1) wherein R5 is a hydrogen atom, a lower alkyl group or a 2-hydroxyethyl group, R6 is a hydrogen atom or a lower alkyl group and n is an integer of 0 to 4; (see formula 2) wherein R7 and R8 are each a lower alkyl group or may be combined together to form a lower alkylene group, or R8 represents a substituted lower alkyl group and n is as defined above;     (see formula 3) wherein R9 is a lower alkyl group or a substituted lower alkyl group; or (see formula 4) wherein R5, R6, R9 and n are each as defined above, or its salt. The compound of the present invention is suitable for use as an antimicrobial agent.
Patent CA-2037116-C (CA)
Title: Hexahydrobenz ¢cd! indoles
Inventor: KRESS THOMAS J
IPC: A61K31/40
Filed: 1991-02-26
Granted: 2003-10-28
Abstract: 4-Amino-6-iodo-1,2,2a,3,4,5-hexahydrobenz[cd]indoles are useful intermediates to 4-amino-1,3,4,5-tetrahydro-benz[cd]indoles containing aminocarbonyl or alkoxycarbonyl subs-tituents in the 6-position which are useful for the treatment of various disorders of the central nervous system.
Patent CA-2042341-C (CA)
Title: Silica scale inhibition
Inventor: BARDSLEY JUDY H
IPC: C02F5/12
Filed: 1991-05-10
Granted: 2001-06-12
Abstract: A method for inhibiting silica scale formation in aqueous systems using selected low molecular weight (meth)acrylic or malefic acid based copolymers or terpolymers, magnesium ion alone, or the selected copolymers and terpolymers with aluminum ion or magnesium ion, or polyacrylic or polymaleic acid with aluminum ion or magnesium ion.
Patent CA-2045600-C (CA)
Inventor: MORSER ALFRED H
IPC: G05B19/37
Filed: 1990-03-12
Granted: 1996-02-06
Abstract: The invention relates to servo-driven computer-numerically controlled systems of the type adapted to receive part program instructions defining a desired path (110) of relative movement between a tool (12) and a workpiece (W), wherein the path may include an interior or exterior curved portion to be effected by coordinated linear movement of machine members along at least two orthogonal linear axes (X, Y). The invention provides apparati and methods for correcting path radius errors (E) to facilitate rapid and accurate movement along the curve. The invention carries out path radius correction by generating position commands (52, 53, 54 and 55) received by the servo (69) using corrected radius data (46), the difference between which and the desired radius (R) to be machined compensates for at least a portion of the path radius error (E) that would otherwise be generated by the servo (69).
Patent CA-2046403-C (CA)
Title: Optical fiber terminal and termination method
Inventor: TACKETT TIMOTHY N
IPC: G02B6/255
Filed: 1991-07-05
Granted: 1995-03-21
Abstract: A  fiber optic  connector  comprises a fiber  having a planar end surface formed by hot plate melting.  A terminal fitting  surrounds  the  fiber  and  has  a  terminal  face coplanar  with the fiber end surface.  A reservoir groove is formed in the terminal face surrounding the aperture and is isolated therefrom by a portion of the terminal face.  The groove  is  preferably  dimensioned  to  completely receive subsurface  the  excess  reflowed fiber  material resulting from the hot plate melting.  In a preferred embodiment, the exit  aperture is  circular and  the groove  has a  coaxial inner  diameter only sufficiently larger  than the aperture diameter  to  assure  isolation  of  the  groove from  the aperture.
Patent CA-2046703-C (CA)
Title: Recording method, recording apparatus for conducting the recording method and ink jet cartridge for use in the recording apparatus
Inventor: AOKI MAKOTO
IPC: B41J2/175
Filed: 1991-07-10
Granted: 1997-12-02
Abstract: An ink absorbent member is prepared for holding an ink  stored  in  an  ink  storing  section  in  an  ink  jet cartridge.  The ink absorbent member contains not more than 0.20% by weight, on the basis of the member, of a fraction of soluble matters in a liquid containing an organic polar solvent incapable of reacting with the ink absorbent member such as monohydric alcohols or alkyl ethers of polyhydric alcohols.
Patent CA-2050334-C (CA)
Title: Iodinated non-ionic compounds, process for their preparation and contrast materials containing them
Inventor: SCHAEFER MICHEL
IPC: A61K49/04
Filed: 1990-12-28
Granted: 1999-09-07
Abstract: The invention relates to compounds of the general formula:     (see fig. I) in which R is selected from 2,3-dihydroxypropyl and 1,3-dihydroxy-2-propyl.      These compounds can be used as X ray contrast media.
Patent CA-2050530-C (CA)
Inventor: UDDENFELDT JAN ERIK
IPC: H04B7/26
Filed: 1991-09-03
Granted: 2001-08-21
Abstract: A method in a mobile radio station to select one of a number of dedicated control channels (DCCH1-21) which are transmitted from a number of base stations (B1-B21) in a mobile radio system. In the mobile station there is an equalizer to compensate for the multipath propagation characteristics of the radio medium between the mobile station and a certain base station. This equalizer is power consuming and should not be used if not necessary. According to the method an investigation is carried out in the mobile station whether or not the equalizer can be disconnected during the initialization of a call from the mobile to a base station. The signal quality of the dedicated channel (DCCH1) which has the greatest signal strength is measured without the equalizer. If the signal quality is not acceptable, a new detection is made with the use of the equalizer. If the signal quality then is acceptable another detection is made without equalizer on the dedicated control channel (DCCH2) which has the next strongest signal and if this detection revealed an acceptable signal quality the base station (B2) transmitting this control channel is selected by the mobile station for the further call progress.
Patent CA-2054103-C (CA)
Title: Method for providing contaminant free gas
Inventor: FARBER SCOTT A
IPC: B23P13/00
Filed: 1991-10-24
Granted: 1994-02-22
Abstract: METHOD FOR PROVIDING CONTAMINANT FREE GAS                    Abstract of the Invention The present invention is directed to a method for providing substantially particulate free gases by dispensing a highly pressurized gas from a carbon steel cylinder.  The carbon steel cylinder is made by a process comprising the steps of forming an open ended cylinder from a billet, blank or tube of carbon steel.  The side walls of the cylinder are made thicker than the desired final thickness of the cylinder side wall.  One end of the cylinder is closed.  The interior of the cylinder side walls is then honed to remove at least some of the excess side wall thickness.  A tapered neck is then formed and tapped in the open end of the cylinder.  The interior surface of the cylinder is then electropolished with a chromium rich electroplating solution to provide a surface layer with reduced iron and increased carbon and chromium on the interior surface wall of the cylinder.  The cylinder may then be vacuum baked to reduce adsorbed contamination.
Patent CA-2057525-C (CA)
Inventor: WARKUS CLEMENS
IPC: F16B7/10
Filed: 1991-12-12
Granted: 2002-03-12
Abstract: The connection has a connection piece (1), which has two displaceable wedges (4, 13) in a bearing housing (8). These wedges (4, 13) can be displaced in the bearing housing (8) independently of one another by means of a guide bearing (15, 15). In the working position, the wedge (4) extends into a dovetailed longitudinal groove (20) of a sectional bar (2). The front side (5) of the wedge (4) is profiled and engages a correspondingly profiled wall (22) of the sectional bar (2) in a positive-locking manner. The wedge (4) spreads two clamping tongues of the bearing housing (8) against the flanks of the longitudinal groove (20).      By pivoting the guide bearing (15), the wedge (4) can be retracted, and the connection can be separated. A second wedge (13) is inserted axially into the interior space of a second profiled piece (3). This wedge (13) spreads two brackets (11) of the bearing housing (8). Both sectional bars (2, 3) have the same design and may be cut off to any desired length. No further processing of the sectional bars (2, 3) is necessary.
Patent CA-2062520-C (CA)
Title: Synthesis of 1-alpha-hydroxy-secosterol compounds
Inventor: DELUCA HECTOR F
IPC: C07C401/00
Filed: 1992-03-09
Granted: 1998-08-11
Abstract: This invention provides a new method of making secosterol compounds, and in particular to the preparation of 1.alpha.-hydroxy-homopregnacalciferol which is a secosterol compound that is effective in inducing the differentiation of malignant cells and is therefore useful for the treatment of malignancies such as leukemia.
Patent CA-2063020-C (CA)
Inventor: MARQUEZ MARCO A
IPC: C07C41/06
Filed: 1992-03-13
Granted: 2001-05-01
Abstract: A process for the production of an ether-rich additive for gasoline, and more particularly, the production of MTBE, TAME and mixtures thereof from light hydrocarbon streams comprising passing the light hydrocarbon stream, preferably from an FCC feedstock, through a superactivated alumina medium so as to remove nitrogen compounds, mercaptan and water prior to contacting the feedstock with a catalyst under etherification process conditions. The present invention further includes a process for regenerating the spent superactivated alumina mediums used for purifying the feedstock employed in the process for the production of ether-rich additives for gasoline.
Patent CA-2065025-C (CA)
Title: Plasma arc torch with improved nozzle shield and step flow
Inventor: SANDERS NICHOLAS A
IPC: H05H1/30
Filed: 1990-07-10
Granted: 1995-11-07
Abstract: A plasma arc cutting torch 10, particularly one operating in the 0-200 ampere range, has a shield 38 mounted at its lower end adjacent a workpiece 26 to block splattered molten metal 26a from reaching a nozzle 16 of the torch.  The shield 38 is electrically insulated, preferably by mounting it on an insulating ring 22 that is itself secured on a cap 20 screwed onto the torch body 12.  A secondary gas flow 48 through the torch passes through the space 40 between the nozzle 16 and the shield 38 to provide cooling. Bleed ports 44,44' in the shield allow an enhanced flow rate with the remaining flow being at a rate, in conjunction with the size of an exit orifice 42 in the shield, to stabilize the plasma arc.  The bleed ports 44,44' are outwardly angled away from the arc.  Canted ports in the secondary gas flow path, but before the bleed ports, produce a swirling of the gas flow which enhances the quality of the cut.  A flow control system 60, preferably one utilizing parallel branch conduits and control valves, allows the selection of flow rates for the secondary gas depending on the cutting conditions.
Patent CA-2068680-C (CA)
Title: Catalyst for treating wastewater, process for producing it, and process for treating wastewater with the catalyst
Inventor: ISHII TOHRU
IPC: B01J23/745
Filed: 1992-05-14
Granted: 1997-06-03
Abstract: The present invention provides a catalyst used in wastewater treatment process wherein not only an organic compound not containing nitrogen, sulfur or halogen is decomposed, but also a nitrogen-containing compound, a sulfur-containing compound and an organic halogeno compound are effectively decomposed, thereby wastewater are treated with excellent efficiency for a long period of time. The invention also provides a production process for the catalyst and said wastewater treatment process.  The first catalyst comprises: an oxide of iron as an A component, and at least one kind of element as a B component selected from a group consisting of cobalt, nickel, cerium, silver, gold, platinum, palladium, rhodium, ruthenium and iridium.  The second catalyst comprises: an oxide as an A component containing iron and at least one kind of element selected from a group consisting of titanium, silicon and zirconium; and at least one kind of element as a B component selected from a group consisting of cobalt, nickel, cerium, silver, gold, platinum, palladium, rhodium, ruthenium and iridium.
Patent CA-2069043-C (CA)
Title: Quantitation of samples utilizing capillary electrophoresis
Inventor: CHEN FU-TAI ALBERT
IPC: G01N27/447
Filed: 1992-05-20
Granted: 1999-07-20
Abstract: Ionic species and method for the quantitation of sample constituents utilizing capillary zone electrophoresis analysis are disclosed.  As disclosed, at least one ionic species having a charge density of betwen about .02 and about .001 is added to the sample.  Benzoic acid is a preferred ionic species. Quantitation of a sample constituent can be derived by normalizing the constituent species with the ionic species.
Patent CA-2072862-C (CA)
Title: Implantable bone growth stimulator and method of operation
Inventor: ERICKSON JOHN H
IPC: A61N1/36
Filed: 1992-06-30
Granted: 2002-05-28
Abstract: A method for the therapeutic stimulation of bone growth of a bone site is disclosed comprising the steps of implanting first and second electrodes into the tissue near the base site. The electrodes are coupled to a bone growth stimulator which generates an alternating current.
Patent CA-2075977-C (CA)
Title: Pastry crust and pastry crust dough
Inventor: FINKEL GILBERT
IPC: A21D2/18
Filed: 1991-03-01
Granted: 1997-10-21
Abstract: This invention relates to a process for making a pastry dough, and in particular for making a pie crust dough. The process involves making two phases, a dough like mixture of flour, water, salt and oil, and a shortening, starch and polyol phase. These phases are laminated to make a heterogeneous pastry dough which has a flaky tender texture when baked. the dough is characterized by having multiple, discontinuous layers which are interrupted by regions of gluten and the starch/fat/polyol phase.
Patent CA-2079390-C (CA)
Title: Multi-cavity mold, method of fabricating same and molding control method using said mold
Inventor: NONOMURA AKIRA
IPC: B29C45/78
Filed: 1992-09-29
Granted: 1996-08-27
Abstract: A multi-cavity mold has flow-distribution adjusting heaters provided for respective ones of main runners branching from a common channel so as to correspond to a plurality of cavities.  The amount of resin charged into the cavities is made uniform from one cavity to the next by independently controlling the heaters.  Sub-runners leading respective ones of the main runners are respectively provided with heaters for adjusting gate finish.  The gate finish and moldability are improved by independently controlling these heaters.  The main runners hold enough resin for at least one shot, and pressure loss in the sub-runners is made equal to or greater than pressure loss in the main runners.
Patent CA-2081863-C (CA)
Title: Ripple-free phase detector using two sample-and-hold circuits
Inventor: ICHIHARA MASAKI
IPC: H03D13/00
Filed: 1992-10-30
Granted: 1997-10-14
Abstract: A phase detector comprises a ramp voltage generator for receiving a reference pulse of a constant frequency and an input pulse and producing a ramp voltage proportional to the phase difference between these pulses. A first sample-and-hold circuit samples the ramp voltage in response to a sampling pulse and holds the sampled voltage. To eliminate ripple component, a second sample-and-hold circuit is provided, which is also responsive to the sampling pulse for sampling a voltage from a constant voltage source and holding the sampled voltage. The voltages sampled by the first and second sample-and-hold circuits are input to a subtractor where the voltage difference between the two input voltages is detected. Ripple components generated by the two sample-and-hold circuits are cancelled out by the subtractor.
Patent CA-2082891-C (CA)
Title: Improved drip pipe for application of wash liquid to filter surfaces
Inventor: SAVORY RUDOLPH ROGER
IPC: B01D33/60
Filed: 1992-11-13
Granted: 2002-07-30
Abstract: A wash liquid distributor is described for applying liquid uniformly across a filter cake on a filter surface providing effective washing and exhibiting resistance to clogging and fouling. The wash liquid distributor consists essentially of, in combination, at least one elongated hollow distributor pipe mounted above the filter surface through which wash fluid is passed, each hollow distributor pipe having a multiplicity of closely, evenly spaced and axially aligned small holes located substantially along the top center line of said pipe and pointing away from the filter surface located beneath said pipe, an inner helical wire wrap around said pipe, the pitch of the winding of said wire being substantially the same as the spacing of the axially aligned holes and whereby each individual turn in the winding is spaced to pass substantially midway between adjacent pairs of the evenly spaced, axially aligned holes, a curved deflector plate located on top of the inner helical wire wrap and covers a portion of the circumference of said pipe, the center line of the deflector plate being substantially in alignment with the top center line of the pipe, and a final outer helical wire winding around the pipe holding the deflector plate in position, the pitch of the winding of this outer helix being substantially the same as the inner helix winding hut about 180° out of phase.
Patent CA-2083331-C (CA)
Title: Detergent compositions
Inventor: AKKERMANS JOHANNES H M
IPC: C11D1/72
Filed: 1992-11-19
Granted: 1998-08-11
Abstract: A particulate high-density detergent composition having excellent flow properties comprises 15 to 50 wt% of a high-performance surfactant system -  selected ethoxylated alcohol nonionic surfactant plus optionally a minor amount of primary alkyl sulphate  -  and from 20 to 60 wt% of zeolite.   The ethoxylated nonionic surfactant preferably has a peaked ethoxylation distribution, and the zeolite may advantageously be maximum aluminium zeolite P.   The composition is preferably prepared by an agglomeration process utilising a high-speed mixer/granulator.
Patent CA-2085981-C (CA)
Title: Process and structure of an integrated vacuum microelectronic device
IPC: H01J1/30
Filed: 1990-10-17
Granted: 1999-03-09
Abstract: The present invention relates generally to a new integrated Vacuum Microelectron ic Device (VMD) and a method for making the same. Vacuum Microelectronic Devices require several unique three dimensiona l structures: a sharp field emission tip, accurate alignment of the tip inside a control grid structure in a vacuum enviro nment, and an anode to collect electrons emitted by the tip. Also disclosed is a new structure and a process for forming diodes, tri odes, tetrodes, pentodes and other similar structures. The final structure made can also be connected to other similar VMD devices or to other electronic devices.
Patent CA-2087859-C (CA)
Title: Benzopyran derivatives
Inventor: KOGA HIROSHI
IPC: C07F7/10
Filed: 1991-07-26
Granted: 2002-01-01
Abstract: Benzopyran derivatives represented by formula (I): (see formula I) wherein X represents =O, =S, =N-Z (Z represents a lower alkyl group, etc.), or =CHNO2; Y represents a substituted amino group, an alkoxy group, an alkylthio group, etc., and R1, R2, R3, R4, R5, R6, and R7 each represent a hydrogen atom, a lower alkyl group, etc., are disclosed. The benzopyran derivatives exhibit K+ channel activating activities and are widely applicable as antiasthmatics, antiepileptics, and the like.
Patent CA-2089395-C (CA)
Title: Monoclonal antibodies for detecting water treatment polymers
Inventor: WEATHERBY PAULINE
IPC: C07K16/44
Filed: 1993-02-12
Granted: 2001-07-10
Abstract: A method for determining the presence and/or concentration of a water treatment polymer in an aqueous sample, comprising producing a polyclonal or monoclonal antibody to the water treatment polymer; and using the antibody so produced as a reagent in an immunoassay, conducted on the aqueous sample.
Patent CA-2089753-C (CA)
Title: Interleukin-2-leukotoxin gene fusions and uses therefor
Inventor: POTTER ANDREW
IPC: C07K14/57
Filed: 1991-08-22
Granted: 2001-11-20
Abstract: New chimeric proteins, DNA encoding the same, and the use of these proteins in stimulating immunity against re-spiratory diseases such as pneumonia; including shipping fever pneumonia, are disclosed. The chimeric proteins in-clude at least one epitope of leukotoxin fused to an active fragment of a cytokine. The chimeric proteins can be used in a vaccine composition. Also disclosed are methods of vacci-nation as well as methods of making the proteins employed in the vaccines.
Patent CA-2091255-C (CA)
Title: Microassay on a card
Inventor: KIDWELL DAVID A
IPC: G01N21/78
Filed: 1991-09-06
Granted: 2001-11-06
Abstract: A microassay card (10) includes an upper layer (12) containing wells (14) for receiving a liquid sample (16). A second layer (20) of the card (10), beneath the first layer (12), includes a supporting surface (223) bound to a reactive spe-cies (114). A third layer (26) includes a superabsorbent sup-port (26) impregnated with an indicator (228). Typically, the indicator (228) is a substrate (228) for an enzyme (16), such as a reduced dye precursor and a source of hydrogen perox-ide necessary for the action of the enzyme (116), upon the substrate to cause a spectral change in the absorbent layer (26). By selecting the structure of the first (12) and second (20) layers, the card (10) can be formatted for a displacement assay or a competitive assay. The microassay card (10) of the present invention is particularly useful for drug testing.
Patent CA-2095931-C (CA)
Inventor: GRAVES PAUL RAYMOND JR
IPC: A62D3/33
Filed: 1992-09-10
Granted: 1999-05-25
Abstract: There is provided a method for the ecologically safe disposal of lead-contaminated hazardous industrial wastes (such, as for example, those generated as discardable by-products in primary and secondary lead smelting operations, especially, blast furnace slags and matte), which comprises reducing the size of the lead-contaminated industrial wastes and treating them, prior to encapsulation in a hardenable material, with the naturally occurring zeolite, clinoptilolite, in an amount sufficient to prevent lead ions (Pb +2) from leaching out of such industrial wastes, through exposure to the action of atmospheric agents (e.g., hot air and rain, or as a result of cyclical freezing and thawing in temperature climates), even over an extended period of time.
Patent CA-2096779-C (CA)
Inventor: KRAGER WILLIAM R
IPC: A01K71/00
Filed: 1993-05-21
Granted: 2004-11-30
Abstract: A fishing net is held in place below a corkline by a series of holding devices. Each holding device has a crimped cylinder from which three loops extend. One of these loops may be tied around the corkline to position the crimped cylinder below the corkline. The other two loops co-operate with similar loops from other adjacent holding devices to position the fishing net below the holding devices.