baber/WOPTO huggingface dataset:
Patent CA-2100433-C (CA)
Inventor: MILLS ROBERT A R
IPC: E21B43/12
Filed: 1993-07-13
Granted: 1999-05-04
Abstract: A drive head for a down hole rotary pump driven from a well head assembly by a drive string that extends through the well to the pump is disclosed.  The drive head includes a hollow rotatable drive shaft having an axial passage for accommodating a slip shaft, a housing attachable to the well head assembly, radial bearings centering the drive shaft in the housing and a thrust bearing for supporting the weight of the drive shaft and the drive string suspended therefrom.  A pulley is mounted on the shaft for driving the drive shaft.  The slip shaft is mounted to the top end of a polished rod which is attached to a top end of the drive string.  The slip shaft and the passage in the drive shaft are preferably hexagonal so that drive torque is transmitted to the drive string without slippage of the shaft.  The drive string is suspended in the well by a clamp that grips a top end of the slip shaft and rests on a top of the housing.  The advantages include the elimination of damage to the polished rod and/or the down hole pump due to polished rod clamp slippage, improved transmission of drive power, and a drive train that cannot be lost down the well when a clamp slips or breaks.
Patent CA-2103411-C (CA)
Title: Electron beam lithography with reduced charging effects
Inventor: DEMARCO JOHN JOSEPH
IPC: G03F1/26
Filed: 1993-11-18
Granted: 1998-09-15
Abstract: A direct-writing electron beam is used for defining features in a resist layer and hence ultimately in an underlying workpiece, such as in a phase-shifting mask substrate or a semiconductor integrated circuit wafer. The resist layer is located on a top major surface of the workpiece. In a specific embodiment, the resist layer is located underneath a protective layer of polyvinyl alcohol ("PVA"); and a grounded conductive layer, such as a conductive organic layer, is located on the protective layer. After exposing the top major surface of the resulting structure to the direct-writing electron beam, the following steps are performed: (1) a plasma etching completely removes the entire thickness of the conductive layer as well as a small fraction of the thickness of the PVA layer; (2) the PVA layer is then completely removed by dissolving it in water; (3) another plasma etching removes a small fraction of the thickness of the resist layer, including any unwanted residues; and (4) the resist layer is developed.
Patent CA-2105474-C (CA)
Inventor: PRINGLE RONALD EARL
IPC: E21B17/10
Filed: 1993-09-13
Granted: 1997-02-25
Abstract: An orientation mandrel rotatable in an orientation body for providing rotational orientation and actuated by a hydraulic piston controlling the position of a helix. A thruster may be connected to the orientation mandrel and is adapted to hydraulically engage the well bore by plurality of elongate gripping bars. An annular thruster piston is hydraulically and longitudinally movable in the thruster body for extending the thruster mandrel outwardly from the thruster body. However, the orienting tool and thruster may be used separately.
Patent CA-2115456-C (CA)
Inventor: SPEICH GERALD ANTHONY
IPC: B62D1/18
Filed: 1993-02-26
Granted: 1998-12-15
Abstract: A device to absorb energy transmitted through a steering column for a vehicle in the event of a vehicle crash and/or driver impact on the steering wheel includes a slotted member (7) in the form of a saddle bracket for connection to a steering column, a second member in the form of a bolt (5) or the like extending through the slot (II) of the first member and a third member in the form of a strap (12) which is arranged to restrict relative movement between the first and second members upon vehicle crash etc. The strap (12) is stiff but ductile and is wrapped over the bolt (5) so that, if the steering column (I) collapses, the bolt will move in a direction out of the slot (II) of the first member and run into the strap (12) which is then unwrapped, thereby absorbing energy transmitted through the steering column. The strap (12) can also itself be slotted.
Patent CA-2116604-C (CA)
Inventor: MAYNARD ROBERT A
IPC: A01K97/05
Filed: 1994-02-28
Granted: 2004-05-11
Abstract: An improved minnow container that is adapted to carry water and oxygen therein when in an upright position is disclosed. The container comprises a water receiving and retaining chamber that is substantially open at its bottom end and has a first opening in the top thereof and an oxygen receiving and retaining chamber that is substantially open at its bottom end and is sealed above the open bottom end so as to preclude the escape of oxygen therefrom when the container is in its upright position. A barrier means physically separates the oxygen receiving and retaining chamber and the water receiving and retaining chamber so as to preclude the passage of fluid between the water receiving and retaining chamber and the oxygen receiving and retaining chamber. The barrier means terminates at a lower boundary in a passageway that is generally below the barrier means. The passageway connects the water receiving and retaining chamber in fluid communication with the oxygen receiving and retaining chamber. When the container is in use in its upright position, the oxygen receiving and retaining chamber contains oxygen, the passageway contains water, and the water receiving and retaining chamber contains water above the level of the passageway, and the oxygen is precluded from exiting the oxygen receiving and retaining chamber. The container is adapted to pass oxygen from the oxygen receiving and retaining chamber through the passageway and into the water receiving and retaining chamber, and concurrently to pass water from the water receiving and retaining chamber through the passageway and into the oxygen receiving and retaining chamber, when the container is rotated from its upright position to a fully rotated position, whereat the oxygen receiving and retaining chamber is substantially filled with water, which is held therein by ambient air pressure in the water receiving and retaining chamber. Oxygen is then added into the oxygen receiving and retaining chamber.
Patent CA-2121577-C (CA)
Title: Nouveaux agents reticulisables, durcissables aux ultraviolets, utiles dans la copolymerisation
Inventor: LAI YU-CHIN
IPC: C08F20/10
Filed: 1992-11-03
Granted: 2000-06-20
Abstract: Nouvelle classe de composés qui peuvent être utilisés comme nouveaux agents de réticulation pour des monomères hydrophiles contenant de l'acrylique, du vinyle et/ou du styrène en vue de préparer de nouveaux copolymères hydrophiles polymérisables aux UV, appropriés pour une utilisation en tant qu'articles biomédicaux, tels que des lentilles de contact.
Patent CA-2122623-C (CA)
Title: Drill pipe handling
Inventor: STOGNER HUEY
IPC: E21B19/16
Filed: 1992-10-29
Granted: 2001-08-07
Abstract: Multi-joint stands (126, 127) of drill pipe are assembled and disassembled in a drilling rig (15) by use of a powered mousehole (11) concurrently with well drilling operations conducted by use of a drill string top drive system (23).  The powered mousehole (11) has an upwardly open bowl (45) in a floor (17) of the drilling rig which can be rotated about a vertical axis (55). A pipe joint (110) held in the bowl, and depending from it, can be screwed, with controlled levels of torque, into connection with a second pipe joint (113) suspended vertically above the first joint (110) by a hoist system (13) which is separate from hoisting equipment (19) carrying the top drive system (23) over a well bore (21). The second pipe joint (113) is held from rotation by a tong assembly (12), but can move axially against a yieldable support (40) into threaded connection with the first joint (110).
Patent CA-2129164-C (CA)
Title: Bingo dabber
Inventor: EMIGLIO JOHN
IPC: A63F3/06
Filed: 1994-07-29
Granted: 1998-11-03
Abstract: A bingo dabber has an inner end with attachment means for a finger and an outer end with a tank connected to feed a dabber tip.
Patent CA-2129612-C (CA)
Inventor: EICK STEPHEN GREGORY
IPC: G06F11/34
Filed: 1994-08-05
Granted: 2000-04-18
Abstract: An apparatus (101) and technique far interactively analyzing system log-files. System log-files, which are monitored by technical personnel and systems specialists to determine system performance, status, and software faults, are often generated during various hardware and software monitoring operations. Each log-file (120) contains time stamped reports. This technique is especially useful for analyzing large log-files. A new release of software may contain many incremental versions that must be tested. The testing of each incremental version may generate a log-file containing thousands of reports. Using this apparatus (101) and technique, reports are correlated, faults are isolated, and temporal patterns are recognized more quickly and efficiently than by using conventional, non-graphical techniques.
Patent CA-2133600-C (CA)
Inventor: HIRAMATSU KATSUHIKO
IPC: H04L27/26
Filed: 1994-10-04
Granted: 1999-04-13
Abstract: A synchronous adder device comprising an A/D converter for digitizing a receive signal transmitted through a plurality of subcarriers by sampling it and an adding unit for determining the value of synchronous addition for each sample is provided with synthetic waveform shaping filters for waveform-shaping every other subcarrier, squaring units for squaring the respective outputs of the synthetic waveform shaping filters, and a low pass filter for removing a harmonic components from the sum of outputs of the squaring units.  In the case where the signal is transmitted through four subcarriers, synchronous addition becomes possible by using the synthetic waveform shaping filters the number of which is two for each of an I signal and a Q signal or is four in total.  The number of squaring units equal to the number of synthetic waveform shaping filters suffices.  Though an output of the squaring unit includes an envelope component and harmonic components since the squaring unit squares signals of the plurality of subcarriers together, the harmonic components can be removed by the low pass filter, thereby making it possible to extract only the envelope component.
Patent CA-2134996-C (CA)
Title: Apparatus and method for trellis decoder
Inventor: OKITA SHIGERU
IPC: H03M13/41
Filed: 1994-11-03
Granted: 1999-01-05
Abstract: A  digital  data  processing  apparatus  capable  of reducing  a  circuit  scale  without  deteriorating error-correcting  capability,  and  capable of  reducing the  bit number  of  a  branch  metric  calculating  circuit.   The apparatus  includes:  a  region  determining  portion  which determines  an  optimal  bit  number  corresponding  to  the number of representative symbol groups; a delaying portion which delays an output from the region determining portion for as long as a coded bit is decoded by a Viterbi decoding portion; and a decoding portion which inputs and decodes an output from the delaying portion and a coded bit that is decoded  by  the  Viterbi  decoding  portion  so  as  to  be decoded, and which outputs the uncoded bit.
Patent CA-2136226-C (CA)
Title: Use of 2-halo adenine derivatives as therapeutic agents against chronic myelogenous leukemia
Inventor: BEUTLER ERNEST
IPC: C07H19/173
Filed: 1993-05-14
Granted: 2000-05-16
Abstract: A process for the treatment of chronic myelogenous leukemia in mammals is disclosed that utilizes a 2-halo-2'-deoxyaden-osine derivative as the active treating agent.
Patent CA-2139667-C (CA)
Title: Methods and diagnostic kits for determining toxicity utilizing bacterial stress promoters fused to reporter genes
Inventor: FARR SPENCER B
IPC: C12Q1/68
Filed: 1993-07-06
Granted: 2005-03-29
Abstract: This invention provides methods and diagnostic kits for determining the toxicity of a compound. The methods and diagnostic kits of this invention employ a plurality of bacterial hosts, each of which harbors a DNA sequence encoding a different stress promoter fused to a gene which encodes an assayable product. Each of these stress promoters is induced by exposure to a different type of cellular stress. The stress promoters utilized in this invention, in toto, comprise those promoters which respond to redox stress, DNA stress, protein stress, energy stress and pH stress. The methods and diagnostic kits of this invention may be employed to characterize and quantify the toxicity of a compound, as well as to identify the cellular mechanism of its toxic action. Moreover, the methods of this invention yield information concerning the action of a compound on a subcellular level. This information may be utilized to design antitoxins to compounds found to be toxic and in active drug design.
Patent CA-2146455-C (CA)
Inventor: GREER WILLIAM
IPC: C12N1/08
Filed: 1993-10-27
Granted: 2007-09-18
Abstract: Peroxide, particularly supplied as hydrogen peroxide, is an effective nucleic acid degrading agent and can be used in the recovery of intracellularly produced materials from cell (particularly bacterial) lysates. The degradation or removal of nucleic acids from cell lysates is important because they form solutions of high viscosity which interfere with subsequent processing. Peroxide degradation is particularly useful in the recovery of polyhydroxyalkanoate polymers such as polyhydroxybutyrate/valerate from lysates of bacterial cells in which they are produced.
Patent CA-2147022-C (CA)
Inventor: MEHNERT WALTER
IPC: G01P3/488
Filed: 1995-04-13
Granted: 2005-11-01
Abstract: A position detector with data evaluation circuit has at least one sensor which, in dependence on movement by which the position to be monitored alters, supplies electrical output signals to a circuit arrangement which produces therefrom a digital signal and puts it into intermediate storage until it is transferred to an evaluation unit. The digital signal reproduces in encoded form the position to be monitored.      An energy converter converts a part of the kinetic energy of the movement into electrical energy and an energy storage means stores the electrical energy and provides same for supply to the circuit arrangement. A monitoring circuit outputs a control signal in response to a threatening drop in the supply voltage below a critical limit value.      When the control signal occurs the digital signal is written into a non-volatile information storage means, in order thereby to make the position detector independent of an external power supply.
Patent CA-2148909-C (CA)
Inventor: SCHUMANN KLAUS
IPC: A61K8/25
Filed: 1993-10-28
Granted: 2003-06-10
Abstract: A toothpaste containing typical components and a combination of silicas and dicalcium phosphate dihydrate (brushite) as its polishing component provides for particularly good restoration of the surface of teeth.      This is achieved by controlled remineralization, partic-ularly in scratch marks and dentinal canals. The effect can be enhanced by addition of magnesium ions and/or fluorophosphate ions.
Patent CA-2149066-C (CA)
Title: Accurate in-situ lattice matching by reflection high energy electron dynamics
Inventor: CUNNINGHAM JOHN EDWARD
IPC: H01S3/10
Filed: 1995-05-10
Granted: 1999-08-17
Abstract: An in-situ method is disclosed for highly accurate lattice matching using reflection high energy electron diffraction dynamics.  The method includes the steps of providing a substrate of a first semiconductor material and initiating growth of a second semiconductor material thereon.  The oscillation amplitude of intensity I of waveform cycles is monitored using reflection high energy electron diffraction.  A maximum intensity I+ and a minimum intensity I- is determined over a predetermined number of waveform cycles.  The intensity drop .DELTA.I from initial reflectivity to minimum reflectivity of the waveform cycles is determined and a normalized figure of merit FM is calculated for the predetermined number of waveform cycles using the relationship:                     The fluxes of the second semiconductor material are then adjusted to maximize FM and optimize lattice matching.         A multiple quantum well light modulator is also provided including a semiconductor substrate of InP, a multiple quantum well region, disposed above the InP substrate, composed of InGaAs and having a thickness of about 4 µm.  The modulator is characterized by a lattice mismatch of less than 2 x 10-4.
Patent CA-2157167-C (CA)
Title: Launching computer applications
Inventor: MOORE MARK DOUGLASS
IPC: G06F9/445
Filed: 1995-08-29
Granted: 1999-08-17
Abstract: A computer application stored on a storage medium (e.g., a portable storage medium such as a compact disk) is automatically launched.  Initialization information expressed in accordance with a predefined syntax is stored on the storage medium.  Also stored in the computer is "launching" information sufficient, together with the initialization information, to enable the computer to launch the application.  The application is automatically launched, without user intervention, by reading the initialization information and using it in connection with the launching information stored in the computer.
Patent CA-2163564-C (CA)
Inventor: NAKASHIMA HIROYUKI
IPC: B22D11/06
Filed: 1995-03-24
Granted: 2000-11-14
Abstract: In continuous casting a thin carbon cast strip, the scale formed thereon is made thin and made to have a composition suited to working such as cold rolling and pressing. Moreover, an apparatus for inhibiting scale formation is simplified, and the consumption amount of an inert gas is reduced. The cast strip is thus produced efficiently. A carbon steel containing up to 0.5% of C is cooled and solidified by a pair of cooling drums to give a thin cast strip having a thickness up to 10 mm. The cast strip is introduced into a seal chamber, where the strip is held in an Ar gas atmosphere containing up to 5% of oxygen through a temperature region to at least 1,200.degree.C, and the strip is cooled at a rate of at least 10.degree.C/sec through a temperature region to 750 to 800.degree.C, followed by coiling the strip in a coil form with a coiler at a temperature of at least 500.degree.C and up to 800.degree.C. Furthermore, the atmosphere is formed with a nitrogen gas or exhaust gas. The scale formation is inhibited, and the composition of the scale is controlled by the use of the atmosphere.
Patent CA-2165104-C (CA)
Inventor: BALDWIN GARY L
IPC: E04H9/12
Filed: 1995-12-13
Granted: 1999-03-23
Abstract: An inflatable portable refuge structure includes at least one refuge chamber having a floor, ceiling and a peripheral sidewall and an inner resealable entrance in the peripheral sidewall of the refuge chamber.   An airlock chamber having a floor, ceiling and peripheral sidewall  is  connected  to  the  refuge  chamber  adjacent  the  inner resealable entrance such that exiting from the refuge chamber through the inner resealable opening proceeds into the airlock chamber.   The airlock chamber further includes an outer resealable entrance in the peripheral sidewall thereof.   The refuge chamber and airlock chamber each further include at least one one-way pressure valve, the pressure valves operative to release air from within the chambers in response to increased air pressure within the chambers.  An external pressurized air supply source spaced from the refuge structure and connected thereto by an air supply hose supplies uncontaminated air to the refuge chamber thereby  inflating  the  refuge  structure.    The  air  supply  source continuously supplies pressurized air to the refuge structure such that fresh air enters the refuge chamber and airlock chamber thereby forcing older air out of the chambers through the one-way pressure valves.
Patent CA-2176604-C (CA)
Title: Formulation stable a la lactone de la 10-hydroxy 7-ethyle camptothecine
Inventor: HARIDAS KOCHAT
IPC: A61K9/00
Filed: 1994-12-19
Granted: 2006-12-05
Abstract: Cette 10-hydroxy 7-éthyle camptothécine (HECPT) qui est un métabolite actif de l'analogue CPT-11 de la camptothécine, est faiblement soluble dans l'eau. Etant donné cette faible solubilité, on ne peut l'administrer directement par voie parentérale ou orale chez l'homme, dans le but d'inhiber la croissance des tumeurs. Cette invention procure une formulation pharmaceutiquement acceptable sous la forme d'une solution ou d'une suspension acide comprenant (1) la HCEPT, principalement sous la forme lactone recherchée, et (2) du diméthylisosorbide ou du diméthylacétamide.
Patent CA-2178883-C (CA)
Inventor: SASAKI TOSHIAKI
IPC: B41J2/175
Filed: 1996-06-12
Granted: 2002-05-14
Abstract: An ink container for containing ink includes an inner container having a plurality of adjacent accommodating chambers for accommodating the ink; an outer casing for enclosing an outer side of the inner container; wherein the inner container and outer casing are of resin materials which are substantially non-stretched.
Patent CA-2180231-C (CA)
Inventor: PARR WILLIAM GORDON
IPC: B23C3/35
Filed: 1996-06-28
Granted: 2006-10-31
Abstract: This invention relates to a programmable semi-automatic portable key cutting machine. More particularly, this invention pertains to a portable key cutting machine which semi-automatically cuts key blanks according to master key blank manufacturer and key profile information stored in a programmable memory. We have invented a portable semi-automatic computer code key machine with a built-in user definable master key system. The system can be used in the field and operated on 12 volts or 110 volts to create without key patterns or duplicate keys simulated key manufacturers' originals which are programmed in a computer which is part of the machine. A built-in data base of all known manufacturers, spaces and depths. In addition, the user of the machine can add new key specifications as they become available from the manufacturer.
Patent CA-2191220-C (CA)
Title: Cdna for human methylenetetrahydrofolate reductase
Inventor: ROZEN RIMA
IPC: C12Q1/6883
Filed: 1995-05-25
Granted: 2012-03-13
Abstract: The present invention relates to a cDNA probe for human methylenetetrahydrofolate reductase (MTHFR), and its uses. The probe of the present invention may be used for the identification of sequence abnormalities in patients with severe or mild MTHFR deficiency, including cardiovascular patients and patients with neurologic symptoms. A human MTHFR protein which hybridizes to the probe of the present invention may be used for therapy of MTHFR-deficiency patients by biochemical or pharmacological approaches.
Patent CA-2194422-C (CA)
Title: Separating a web at a line of weakness
Inventor: SCHMIDT JOHN
IPC: B65H35/10
Filed: 1997-01-06
Granted: 2000-08-15
Abstract: This invention pertains to apparatus and methods for breaking a web along spaced lines of weakness.  The invention includes a compact breaker bar assembly comprising at least one breaker bar in a gap.  The apparatus also includes driving apparatus to power the  breaker  bar  assembly  in  breaking  the  web.    In  some embodiments, one or more breaker bars engage and stress the web along a single transverse line across the web, breaking the web. In other embodiments,  at least first and second breaker bars engage and stress the web along spaced first and second transverse lines across the web.  The breaker bars can be mounted on one or more rotary elements, or can be mounted on one or more belts or other breaker bar carriers,  traversing closed-loop paths.   In preferred embodiments, the breaker bar assembly comprises at least two breaker bars, a first breaker bar following a first straight-line path segment while a second breaker bar follows a second opposing straight line path segment, both breaker bars engaging and stressing  the web at  the  same  time,  both breaker bars following the straight-line path segments before engaging the web, during engaging and stressing of the web, while breaking the web, and after breaking the web.