baber/WOPTO huggingface dataset:
Patent CA-2020995-C (CA)
Title: Process for decomposition of methanol
Inventor: KIYOURA TADAMITSU
IPC: B01J27/232
Filed: 1990-07-12
Granted: 1996-09-10
Abstract: Methanol is decomposed in the presence of a catalyst containing chromium oxide and zinc oxide as main components and containing a compound of at least one element selected from the group consisting of alkali metals, alkali earth metals and lanthanides, while contents of iron and nickel in the catalyst are each maintained at 0.5% by weight or less.  This process is characterized by (1) being excellent in stability at high temperatures, (2) preventing the catalyst from deteriorating, (3) inhibiting the production of by-products, and (4) obtaining a gas in which the CO/H2 ratio is high.
Patent CA-2027465-C (CA)
Title: Composite wastewater sampler
Inventor: DAWSON BRIAN D
IPC: G01N1/10
Filed: 1990-10-12
Granted: 2001-10-02
Abstract: A composite wastewater sampler includes a flow-through-chamber having an inlet port and an outlet port with a path between them that gradually increases in depth and width and then decreases in width. It is shaped to cause fluid to: (1) flow from the inlet port; (2) drop to a lower level of flow within the flow-through-chamber; (3) gradually adjust in cross-sectional shape to the outlet port; and (4) flow back into a wastewater pipe. A sampling nozzle extends into the flow-through-chamber adjacent to the inlet port and within the path of the downwardly flowing wastewater so that wastewater exiting the port contacts the nozzle and flows downwardly across it.
Patent CA-2041911-C (CA)
Inventor: MALHOTRA SHADI L
IPC: B41M5/50
Filed: 1991-05-07
Granted: 1998-12-22
Abstract: A transparent substrate material for receiving or containing an image comprised of a supporting substrate, an ink toner receiving coating composition on both sides of the substrate and comprised of an adhesive layer and an antistatic layer contained on two surfaces of the adhesive layer, which antistatic layer is comprised of mixtures or complexes of metal halides, or urea compounds both with polymers containing oxyalkylene segments.
Patent CA-2053194-C (CA)
Inventor: HARA TAKAHISA
IPC: B29C44/04
Filed: 1991-10-10
Granted: 2002-02-19
Abstract: The present invention provides a multi-layer molded article which is made of a polypropylene resin body and a skin material lined with a foamed layer. The article has a good appearance and is produced using upper and lower molds which have a cavity therebetween. A specific cavity clearance is freely set between the molds, a skin material lined with a foamed layer is placed between the upper and lower molds, and a molten polypropylene resin containing a chemical blowing agent is supplied through a resin melt conduit into the lower mold when the cavity clearance (t) is between (C + 15) mm and (C + 50) mm where "C" is a thickness of the skin material lined with the foamed layer, lowering the upper mold at a specific rate and pressing the molten resin at specific pressure to fill the cavity with the molten resin to complete molding of a body of the resin, pressing the body for a certain time after completing molding to form a skin layer, lifting up the upper mold to decrease compression pressure of the skin material lined with the foamed layer to a pressure lower than a blowing pressure of the polypropylene resin to form and solidify a foamed body, and again lowering the upper mold to apply a certain pressure on a molded article and cooling the article in the molds.
Patent CA-2065544-C (CA)
Inventor: RODEGHIERO RENO A
IPC: F16H37/04
Filed: 1992-04-07
Granted: 1995-04-18
Abstract: A sixteen forward speed, four reverse speed transmission is provided having a very high efficiency and excellent shift quality.  The gear ratios are selected so that a relatively large ratio spacing is provided between each gear step in the low-speed PTO usage range and in the high-speed transport usage range, while a much smaller gear ratio spacing is provided in the intermediate tillage or field usage range. The gear ratios are selected to minimize the number of clutches being changed to shift from one gear to the next, with minimal speed and momentum differences required inside the transmission during each shift.  Just two shifts have a large ratio change, and they are positioned in locations having minimal usage, thereby minimizing operator awareness of these gear ratio spacings.  The total number of meshes through the transmission is minimized to provide maximum efficiency.
Patent CA-2072138-C (CA)
Title: Method for conducting an oil drilling operation
Inventor: HENNEUSE HENRY
IPC: E21B44/00
Filed: 1991-09-12
Granted: 1997-11-18
Abstract: PCT No. PCT/FR91/00721 Sec. 371 Date Jul. 13, 1992 Sec. 102(e) Date Jul. 13, 1992 PCT Filed Sep. 12, 1991 PCT Pub. No. WO92/05337 PCT Pub. Date Apr. 2, 1992.Method for conducting an oil drilling operation, during which a drill-stem produces the rotation of a tool in an oil well. The method consists of the following steps: continually measuring the rotational speed of the upper end of the drill-stem; continuously measuring the torque applied to that end of the drill-stem; determining the torque applied to that end of the drill-stem; determining the torque variation; establishing the period of torque variation if the amplitude of the variation exceeds a predefined threshold; verifying the stability of this period; comparing the latter, if stable, with at least one predefined theoretical period; and reporting the results obtained to the user in order to control the drilling operation.
Patent CA-2073857-C (CA)
Title: Determining and marking apparatus and method for use in optometry and ophthalmology
Inventor: MARSHALL FORREST A
IPC: A61B3/00
Filed: 1991-01-18
Granted: 1996-11-19
Abstract: An apparatus and method for subjectively determining the proper position-ing of progressive power or other corrective lenses are disclosed. The apparatus in-cludes a target (30) such as a small fiber optic (66) or other light source and one or more marking rods (34) which may be activated by the patient. While wearing pre-fitted frames (26) and fixating on a remote target (RT), the patient places the light source (30) against or immediately adjacent the exterior surface (18) of the simulat-ed or other lens (22) within either of the frames and positions the light so that it is centered in his or her line of sight (94).  Once the light is centered the patient acti-vates  the marking  rod which contacts, and marks, the exterior surface of the lens. Because  the light source and marking rod  or rods are designed to obstruct verylittle of the patient's vision, his or her peripheral vision remains intact during the process, thereby allowing binicular fusion to occur and avoiding  introduction of phoria errors into the positioning process.
Patent CA-2077695-C (CA)
Title: Hydropyridine derivatives having antithrombotic activity
Inventor: KOIKE HIROYUKI
IPC: C07D221/00
Filed: 1992-09-08
Granted: 2002-08-20
Abstract: The present invention relates to a series of new tetrahydrothieno[3,2-c]pyridine derivatives and furo and pyrrolo analogs of these derivatives, and provides processes for preparing these derivatives as well as methods and compositions using them for inhibiting blood platelet aggregation. More specifically, disclosed is a compound of formula (I):   (See formula I) wherein, preferably:        R1 represents a hydrogen atom, a methyl group, an ethyl group, a halogen atom, a methyl group substituted by at least one fluorine atom, a hydroxy group, a methoxy group, an ethoxy group, a methoxy group substituted by at least one fluorine atom, a methylthio group, a methylthio group substituted by at least one fluorine atom, a formyl group, an acetyl group, an acetyl group substituted by at least one fluorine atom, an alkoxycarbonyl group having from 2 to 4 carbon atoms, a carbamoyl group, a cyano group, a nitro group, a methanesulfonyl group, an ethanesulfonyl group, a methanesulfonyl group substituted by at least one fluorine atom, or a sulfamoyl group;      R2 represents an alkanoyl group having from 2 to 6 carbon atoms, a substituted alkanoyl group which has from 2 to 6 carbon atoms and which is substituted by at least one fluorine atom, a cycloalkylcarbonyl group having from 4 to 7 carbon atoms, or a substituted cycloalkylcarbonyl group which is substituted by at least one fluorine atom;      R3 represents a hydrogen atom, a hydroxy group, a methoxy group, an ethoxy group, a t-butoxy group, a methoxymethoxy group, an alkanoyloxymethoxy group in which the alkanoyl part has from 1 to 5 carbon atoms, a benzyloxy group, an alkanoyloxy group having from 1 to 12 carbon atoms, an alkenoyloxy group having 3 or 4 carbon atoms, a cycloalkylcarbonyloxy group having from 4 to 7 carbon atoms, a benzoyloxy group, an alkoxycarbonyloxy group having from 2 to 5 carbon atoms, a benzyloxycarbonyloxy group, a phthalidyloxy group, a (5-methyl-2-oxo-1,3-dioxolen-4-yl)methoxy group, a (5-phenyl-2-oxo-1,3-dioxolen-9-yl)methoxy group, an amino group or a t-butoxycarbonylamino group;      Y represents an oxygen or sulfur atom; and n is 1 to 3.
Patent CA-2081315-C (CA)
Inventor: GILHEANY DECLAN
IPC: C07C67/29
Filed: 1991-04-23
Granted: 2004-10-19
Abstract: Osmium-catalyzed methods of addition to an olefin are discussed. In the method of asymmetric dihydroxylation of the present invention, an olefin, a chiral ligand, an organic solvent, water, an oxidant and an osmium-containing compound are combined. In the method of asymmetric oxyamination of the present invention, an olefin, a chiral ligand, an organic solvent, water, a metallochloramine derivative, an osmium-containing compound and, optionally, a tetraalkyl ammonium compound are combined. In the method of asymmetric diamination of the present invention, an olefin, a chiral ligand, an organic solvent, a metallochloramine derivative, an amine and an osmium-containing compound are combined. In one embodiment, an olefin, a chiral ligand which is a polymeric dihydroquinidine derivative or a dihydroquinine derivative, acetone, water, a base, an oxidant and osmium tetroxide are combined to effect asymmetric dihydroxylation of the olefin.
Patent CA-2081335-C (CA)
Inventor: BRAKUS BOGDAN
IPC: H02M3/335
Filed: 1991-04-16
Granted: 1999-01-05
Abstract: Convertisseur à courant continu muni d'un interrupteur électronique pouvant devenir conducteur sous l'action d'impulsions de mise en circuit et pouvant limiter le courant par la suppression de ces impulsions de mise en circuit.  Pour que l'on puisse utiliser un détecteur de courant à faibles pertes de réalisation facile, on crée une tension continue correspondant à une valeur de crête du courant en faisant appel à un interrupteur supplémentaire, en phase avec l'interrupteur électronique, lequel est de préférence un transistor à effet de champ à fonctionnement inverse.  Ce convertisseur est spécialement adapté aux applications pour lesquelles il est nécessaire de tenir compte des courts-circuits à faible impédance à la sortie du convertisseur.
Patent CA-2088513-C (CA)
Inventor: ROPER DAVID H
IPC: E01F9/00
Filed: 1990-08-06
Granted: 2001-04-03
Abstract: A pop-up traffic control device (10) is raised above or withdrawn below the pavement surface through a bore in the cover (18). A lead screw (16), rotated by power source (30), raises a traffic marker tube (12) by a follower tube socket (14) attached to the lead screw (16). The follower tube socket (14) rotates on the lead screw (16) to either raise or retract the traffic marker tube (12) above or below the roadway. The interior of the traffic control device is sealed from external foreign matter by a liner tube (48) in the cover bore surrounding the traffic marker tube (12). The traffic marker tube (12) is easily replaceable. Additional features include: a slope adjustment mechanism, a heating unit (74), a lead screw lubrication/cleaning arrangement (80, 82), lighting units (8a) for the traffic marker tube (12), a watertight coupling (90; 92), a variable-speed arrangement for the lead screw rotation, and a marker tube status signal unit.
Patent CA-2097168-C (CA)
Inventor: YAMAMOTO YUJI
IPC: G03B27/46
Filed: 1993-05-27
Granted: 1997-09-30
Abstract: A method and device for rotating images about an optical axis by changing the direction of a light path by a composite mirror unit having a simple structure.  A printing device has a light source for emitting light to an image Xa on a negative film, a printing lens for adjusting the magnification of the light that passes through the image, and a composite mirror unit for reversing the light path to print an image Ya on a printing material.  The entire composite mirror unit can be rotated through a predetermined angle about a rotary shaft by a driving motor.  The composite mirror unit has two oppositely arranged mirrors which are mounted on separate blocks and so as to be inclined by 45° with respect to the vertical.          By turning the unit by ~ 45° from the reference position (0°), the image will rotate by 90° or 270° with respect to the image Xa.
Patent CA-2100047-C (CA)
Inventor: FUJI HIROSHI
IPC: G11B7/126
Filed: 1993-07-07
Granted: 1996-07-09
Abstract: A first control data generating circuit continuously controls an output light-intensity of a light source with respect to an optical disk that has not been formatted. A second control data generating circuit controls the output lightintensity of the light source at each of a plurality of sectors with respect to an optical disk that has been formatted. A discrimination circuit discriminates whether or not the optical disk has been formatted according to a detection of a header of each sector. According to a result of the discrimination circuit, a switch alley switches controlling operations between the first light-intensity controlling operation and the second light-intensity controlling operation. The difference between those two types of controlling operations lies in whether timing for controlling the light-intensity is dependent on each sector or not. Therefore, independent of whether or not the optical disk has been formatted, the light-intensity control device of the present invention makes it possible to determine an optimum output light-intensity by similar controlling operations.
Patent CA-2101222-C (CA)
Inventor: GEORGER WILLIAM HUGO
IPC: H01F19/06
Filed: 1993-07-23
Granted: 1998-09-15
Abstract: Disclosed is an adapter which permits unbalanced video and audio baseband signals to be transmitted over unshielded twisted pair wiring. The adapter includes low loss transformers which produce a minimum of crosstalk.
Patent CA-2102009-C (CA)
Inventor: SINDEN A DAVID
IPC: B22D2/00
Filed: 1993-10-29
Granted: 1997-12-09
Abstract: A metal casting control device is provided for use in conjunction with a semi-continuous metal casting system.  The control device is an integral module containing a metal surface elevation sensing device, a valve actuator for positioning a metal distribution control valve, and electronic circuits associated with these mechanical components.  The control device module is adapted to be connected to an overhead metal distribution launder by a single quick-coupling for convenient and simple removal and replacement. Calibration of the control device is performed after installation by mounting a calibration target on the metal casting system and vertically adjusting the metal surface elevation sensing device until an integral calibration indicator positioned on the control device indicates that the proper vertical position has been attained.  The metal surface elevation sensing device is formed by a manually-adjustable sensor carriage and a sensor support which is mounted for automatic vertical movement relative to the sensor carriage.  An inductive proximity sensor is supported over a metal casting station by the sensor support.  The vertical position of the sensor support is controlled to maintain the sensor within a fixed vertical distance from the surface of molten metal within the metal casting station.
Patent CA-2103219-C (CA)
Title: Batterie d'accumulateurs au lithium
Inventor: TAKAHASHI MASATOSHI
IPC: H01M4/58
Filed: 1993-11-16
Granted: 1998-08-11
Abstract: Batterie secondaire au lithium comportant une électrode négative en graphite naturel capable de retenir et de décharger les ions de lithium, et dans laquelle le graphite naturel a fait l'objet d'un traitement thermique à une température d'au moins 1800 degrés Celsius. Le traitement thermique en question élimine les impuretés présentes dans le graphite naturel, en conséquence de quoi la décomposition de la solution électrolytique utilisée dans la batterie est presque nulle durant le cycle de charge-décharge, et l'autodécharge est presque nulle durant le remisage de la batterie.
Patent CA-2104905-C (CA)
Inventor: DAVISON ROGER C
IPC: F28F3/04
Filed: 1993-08-26
Granted: 1996-06-04
Abstract: A plate heat exchanger having a stack of plates with spaces between the plates defining passages for hot and cold fluids.  The ends of the plates define inlet and outlet openings for the fluid passages.  The openings are enlarged by bending the end of one of the two plates for each flow path away from the corresponding end of the other of these plates and welding it to an adjacent plate.  Preferably the ends of the plates are triangular, or V-shaped, to lengthen the openings along each edge of the V.
Patent CA-2114589-C (CA)
Title: Carry out tray
Inventor: EMERY ROY WILLIAM
IPC: B65D1/36
Filed: 1994-01-31
Granted: 1995-11-28
Abstract: Known trays for carrying beverage cups have three or four pressure panels spaced apart around the perimeter of each cell in a manner to hold the cup upright.  In the tray of this invention each cell has only two opposing pressure panels, each directed downwardly and inwardly toward the central area of the cell, and each panel having two projections on its inwardly directed face appropriately spaced apart to provide four pressure contacts around the perimeter of the contained article.  The pairs of pressure contacts are thus displaced outwardly in diametrically opposite directions by the contained article, so that round, oval or rectangular shapes can be contacted by each of the four pressure contacts.
Patent CA-2125335-C (CA)
Inventor: CAWTHORNE CHRIS E
IPC: E21B10/52
Filed: 1994-06-07
Granted: 1998-08-04
Abstract: A rotary cone rock bit for drilling boreholes in an earthen formation is disclosed. One or more rotary cones are rotatably retained on a journal bearing connected to the rock bit. These rotary cones form a circumferential heel row with extended ultra hard shaped cutters spaced within the heel row. Each of the shaped cutters form a cutting surface that extends above the heel row or is angled with respect to the formation to maintain the cutters in compression while the cutters shear a borehole wall. The shaped cutters serve to maintain the borehole diameter.
Patent CA-2129825-C (CA)
Inventor: GUPTA ANIL
IPC: G06F15/16
Filed: 1993-03-25
Granted: 2000-08-15
Abstract: A real time data processing system consisting of a plurality of processing nodes (NODE1, NODE2, NODE3) and a write only reflective data link (46) for transferring information containing writes only between the plurality of processing nodes (NODE1, NODE2, NODE3). All the nodes (NODE1, NODE2, NODE3) include a bus (22), a processor (20) coupled to the bus (22), a memory (40) having at least two ports with one port (42) connected to the bus (22) and the other port (48) connected to the data link (46) and a sensor (60) for sensing a write to the memory (40). At least one node has a VME bus (22) as the bus (22) and serves as an I/O connected to one port (42) of the memory (40). Further a local bus (24) is included for inputting and outputting from the memory (40). The local bus (24) is connected to a third port (44) of the memory (40).
Patent CA-2134501-C (CA)
Inventor: LODICO JAMES IRWIN
IPC: A01C7/04
Filed: 1994-10-27
Granted: 1997-10-07
Abstract: The present invention is directed to a seed meter for corn.  The seed meter comprises a stationary casing with two rotatably mounted discs.  The casing is provided with a seed receiving zone in communication with a inlet, and a seed discharge zone in communication with an outlet.  The casing is also provided with a stationary camming surface.  The first disc is provided with a plurality of spring biassed selector pins. Each pin has an engagement surface and a cam follower surface.  The cam follower surface engaging the camming surface.  The second disc which rotates with and is parallel to the first disc is provided with a plurality of seed cells corresponding to the selector pins.  A flexible and resilient membrane covers the seed cells.   In operation, the discs are continuously rotated through the seed receiving and discharge zones.  As a selector pin is driven towards the corresponding seed cell by the camming surface, the pin traps a single seed in the membrane covered seed cell.  The seed is released when the pin is rotated into the discharge zone.
Patent CA-2135897-C (CA)
Inventor: MULDER RONALD
IPC: C02F3/34
Filed: 1993-06-10
Granted: 2003-09-09
Abstract: The invention relates to a system and a process for purifying nitroge-nous waste water by biological nitrification and denitrification. The system comprises at least two essentially separated reactor chambers, a liquid sup-ply (4) and a liquid discharge (5). The first, aerated reactor chamber (1) is provided at the top with an overflow to the second, oxygen-depleted reactor chamber (2). The oxygen-depleted reactor chamber (2) is divided at the top into a degassing chamber (7) and a settling chamber (8) having an overflow (9) to the liquid discharge. The first reactor chamber is provided with an air supply (11, 18) and an air discharge (12) located above the supply. The first reactor chamber may be partly divided into a riser (14) and a downcomer (15) which allow, as a result of the air supply, mass circulation to take place in the aerated reactor chamber. According to the process, waste water with bacterial sludge on a carrier circulates alternately through the oxygen-de-pleted and the aerated reactor chambers, whereafter it is separated from the sludge and the sludge is returned to the reactor.
Patent CA-2142963-C (CA)
Title: Dispositif et methode pour utiliser la commutation de constellations sans remplissage avec le mappage de trames
Inventor: LONG GUOZHU
IPC: H04L27/34
Filed: 1994-06-24
Granted: 1998-08-18
Abstract: La méthode est constituée par un dispositif (500) et une méthode (400) de commutation en constellation sans remplissage avec mise en correspondance des blocs qui permet de réduire la complexité de la mise en correspondance des blocs pouvant avoir un nombre fractionnaire de bits et un nombre prédéterminé de symboles, tout en éliminant les inconvénients usuels de la commutation en constellation.
Patent CA-2145577-C (CA)
Title: Blood compatible, shear sensitive gels
Inventor: VOGLER ERWIN A
IPC: C08K5/04
Filed: 1995-03-27
Granted: 1999-06-29
Abstract: Gel formulations including a polydimethylsiloxane-polyethyleneoxide copolymer gelled with dibenzylidine sorbitol in the presence of water or alcohol. The gel formulations are useful for facilitating the separation of blood serum or plasma from the cellular portion of blood or as a thermoreversible shear sensitive substance.
Patent CA-2145754-C (CA)
Title: Rescue tool
Inventor: HICKERSON WILLIAM
IPC: B66F3/00
Filed: 1993-09-20
Granted: 2001-05-29
Abstract: A light weight, quiet and emergency safe, portable "jaws of life" spreading tool (10) actuated by an electric motor (13). Full high torque at any position, with selectable spreading or cutting motions under high loads is achieved by the use of a rotary, multiple stage, speed reducing gearbox driven by the motor. The gearbox contains an input stage (14) from the electric motor running on a 12 volt DC power supply, and a compound planetary output stage (18). The arms or jaws (12a, 126) of the device are separately driven by the planetary or spindle gears and, for convenience, are attached to external rings on the gears, by heavy duty pins (30). The arms or jaws are removable for interchanging between cutting and spreading configurations, or replacement with general purpose arms capable of both cutting and spreading operations.