baber/WOPTO huggingface dataset:
Patent CA-2120675-C (CA)
Inventor: BOURQUE JACQUES G
IPC: E21B43/12
Filed: 1994-04-06
Granted: 1998-01-06
Abstract: A pressure trap for a producer well of a subterranean pressurized fluid storage system, the well being lined with a casing having a casing interior connected with a subterranean pressurized fluid storage cavity through a lateral bore, includes a divider for dividing off a chamber from a lower portion of the casing interior which chamber communicates with and extends to a selected level below an entry of the lateral bore into the well casing, and a passage for fluid communication between the chamber and a remainder of the casing interior and below the entry of the lateral bore. The divider is preferably a combination of a cylindrical liner having upper and lower ends respectively positioned above and below the entry of the lateral bore, and an annular packer sealing between the liner and the well casing above the entry of the lateral bore. Methods of providing a pressure trap and sealing a producer well are also disclosed. The pressure trap can be installed at lower cost, as a retrofit in existing casings, or as a backup to failed conventional arrangement installed outside the well casing.
Patent CA-2123891-C (CA)
Title: Heated balloon medical apparatus with fluid agitating means
Inventor: NEUWIRTH ROBERT S
IPC: A61B18/00
Filed: 1993-09-30
Granted: 2005-09-13
Abstract: A method and apparatus for effecting necrosis of a tissue lining of a mammalian body cavity, particularly a uterine endometrium, by introducing an applicator comprising a distendable bladder (5) connected to a catheter (10) into the uterus, distending the bladder by introducing a nontoxic fluid (25) under pressure, heating the fluid by means (44) located internal to the bladder to a temperature of 190 °F to 215 °F and preferably 210 °F  for period of four to twelve minutes and preferably six minutes and regulating said apparatus by means (30) located external to the uterus, thereby cauterizing substantially the entirety of the tissue lining, particularly the endometrium. An agitator (103) circulates the fluid within the distendable bladder to help keep the fluid at a uniform temperature.
Patent CA-2136455-C (CA)
Title: Process for producing anti-microbial effect with complex silver ions
Inventor: BURRELL ROBERT EDWARD
IPC: A01N47/30
Filed: 1994-10-31
Granted: 1999-06-29
Abstract: Production of an anti-microbial effect in an alcohol or water based electrolyte is achieved by preparing silver materials that form complex ions other than Ag+, Ag2+, or Ag3+, and which produce an anti-microbial effect that is greater than that produced by an equivalent amount of silver as Ag+. Exemplary complex silver ions produced include Ag(CN)2-, AgCN(aq)(ion pair), Ag(NH3)2+, AgCl2-, and Ag(S2O3)2 3-. The silver materials must be prepared as powders or as solutions or suspensions containing the complex silver ions.
Patent CA-2137102-C (CA)
Inventor: WATKINS RICHARD R
IPC: C21C7/00
Filed: 1994-12-01
Granted: 2005-02-08
Abstract: A method of making stabilized ultra-low carbon steel having a high nitrogen content for enameling applications. The preferred method involves two phases. The first phase occurs in the basic oxygen furnace wherein nitrogen gas is combined with oxygen gas and blown into the melt through the oxygen lance. After the oxygen blow the carbon content of the melt is approximately 0.03%  and the nitrogen content is at least about 0.016 to 0.020%. In the second phase the melt is introduced to a vacuum circulation decarburizer where the carbon content of the steel is reduced to ultra low levels on the order of 0.005%. The nitrogen content is maintained at a level of at least about 0.01% by introducing nitrogen gas into the vacuum decarburization vessel as the lift gas through inert gas tuyeres.
Patent CA-2139112-C (CA)
Title: Novel nicotinic acid esters
Inventor: LUNDSTEDT TORBJORN
IPC: A61K31/495
Filed: 1993-06-23
Granted: 2006-03-21
Abstract: The present invention concerns novel compounds of formula (II) wherein R is selected from saturated or unsaturated alkyls, saturated or unsaturated cycloalkyls, heterocyclic compounds or from (a) or (b) wherein G is carbon or nitrogen; m is 0-10; wherein R1, R2 and R3 are the same or different and selected from hydrogen, halogen, alkyl having 1 to 5 carbon atoms, electron donor groups such as alkoxy having 1-5 carbon atoms or hydroxy, electrons acceptor groups selected from cyano, nitro. trifluoroalkyl and the pharmacologically active salts thereof. The new compounds can be used for treating disorder in the central nervous system.
Patent CA-2142698-C (CA)
Title: Spring brake actuator with a pressure plate bearing for a caging tool
Inventor: PIERCE WILLIAM C
IPC: F16D65/28
Filed: 1994-02-07
Granted: 2004-04-13
Abstract: A Spring brake actuator (10), formed by a housing having an elastomeric diaphragm (52) dividing the interior into two chambers, comprises a pressure plate (58) adjacent the diaphragm in one of the chambers with a large force compression spring (60) between the pressure plate and the housing. A hollow actuator and (56) is mounted within the chamber for reciprocal movement with the diaphragm and the pressure plate and receives a permanently installed caging tool (70) extending through a housing aperture, a pressure plate aperture (73) to facilitate reciprocal movement of the pressure plate over the caging tool.
Patent CA-2143727-C (CA)
Inventor: LESTER ROBERT A
IPC: G01V13/00
Filed: 1995-03-01
Granted: 2000-10-10
Abstract: In an induction logger, a method for nulling the output signal from a pair of series-coupled receiver coils by altering the magnetic flux distribution within the coils by use of one or more magnetic equalization bodies. The shape and aspect ratio of the equalization body are chosen to minimize temperature dependence of the initial permeability.      Alternatively, a highly conductive equalization body may be used.
Patent CA-2145223-C (CA)
Title: Huffman decoder
Inventor: WISE ADRIAN PHILIP
IPC: H04N7/50
Filed: 1995-03-22
Granted: 1999-10-05
Abstract: A multi-standard video decompression apparatus has a plurality of stages interconnected by a two-wire interface arranged as a pipeline processing machine. Control tokens and DATA Tokens pass over the single two-wire interface for carrying both control and data in token format. A token decode circuit is positioned in certain of the stages for recognizing certain of the tokens as control tokens pertinent to that stage and for passing unrecognized control tokens along the pipeline.      Reconfiguration processing circuits are positioned in selected stages and are responsive to a recognized control token for reconfiguring such stage to handle an identified DATA Token. A wide variety of unique supporting subsystem circuitry and processing techniques are disclosed for implementing the system.
Patent CA-2147683-C (CA)
Title: Long wear life flame-retardant cotton blend fabrics
Inventor: FLEMING GEORGE R
IPC: D06M15/431
Filed: 1995-04-24
Granted: 2000-10-31
Abstract: Flame-retardant treated cotton/thermoplastic fiber blend fabrics have been discovered which have extended wear life and retain their flame-retardant treatment for the life of the garment.
Patent CA-2154079-C (CA)
Inventor: LINDMARK LILLIESTRALE MAGNUS
IPC: H02M3/28
Filed: 1994-01-21
Granted: 2005-01-04
Abstract: A power unit intended to supply an electric bulb, a battery charger, electronic equipment or the like includes a self-oscillating series-resistance converter. The converter includes two mutually connected transistors (TR1, TR2), each of which is activated by a control transformer (T1), and further includes an inductor (L1) and a capacitor (C4) connected in series. Each transistor (TRI, TR2) and a corresponding series-connected capacitive voltage divider (C6, C7) associated with the transistor and/or a further transistor (TR3, TR4) are connected parallel with the inductor (L1), capacitor (C4) and control transformer (T1). The load is activated or energized across the capacitor (C4). The magnetic flux through the control transformer (T1) is influenced by means of a magnetic flux applied externally through a magnetic or corresponding means, so as to change the oscillation frequency of the transistors (TR1, TR2) and therewith the voltage output of the power unit.
Patent CA-2154210-C (CA)
Inventor: MAUGHAN GARTH
IPC: F16C11/04
Filed: 1995-07-19
Granted: 2005-07-05
Abstract: A non-oscillating point comprises a housing with an annular inner surface, an annular sleeve wedged within the housing, a stud with a radially outer bearing surface received in said housing, a radially outer bearing surface of the stud adjacent a radially inner surface of the sleeve, and an annular bearing wedged within the sleeve, the bearing having a longitudinally inner bearing surface contacting a longitudinally outer bearing surface of the stud. In a first embodiment of the present invention, both the radially outer bearing surface of the stud and the radially inner surface of the sleeve are generally conical, the stud wedged within the sleeve. In a second embodiment, a second bearing is wedged between the sleeve and the stud. The joint is subjected to additional compression pre-load when the housing is closed.
Patent CA-2156362-C (CA)
Title: Mini inflator assembly
Inventor: CUEVAS JESS A
IPC: B60R21/26
Filed: 1995-08-17
Granted: 1998-06-30
Abstract: An apparatus (10) for inflating an air bag (12) comprises a first container (15) defining a first chamber (18) filled with inflation fluid.  A second container (64) is movable within the first chamber and defines a second chamber (69).  The second chamber contains ignitable material (80).  An igniter (90) ignites the ignitable material (80) in the second chamber in response to an actuating signal and thereby develops a thrust to propel the second container (64) within the first chamber (18) in a predetermined direction.  By igniting the ignitable material (80), the igniter (90) also produces combustion products including heat for heating and pressurizing the inflation fluid in the first chamber (18) to increase the temperature and pressure of the inflation fluid.  The inflation fluid is directed from the first chamber (18) into the air bag (12) to inflate the air bag.  The second container (64) includes tabs (99) which move from a retracted condition to an extended condition when the second container (64) is propelled within the first chamber (18) in the predetermined direction.   When extended, the tabs (99) frictionally engage the first container (15) to resist movement of the second container (64) in a direction opposite the predetermined direction.
Patent CA-2157793-C (CA)
Title: Macromolecular microparticles and methods of production
Inventor: WOISZWILLO JAMES E
IPC: A61K47/48
Filed: 1994-03-04
Granted: 1999-07-13
Abstract: A macromolecular microparticle composition formed by dehydrating an aqueous macromolecule solution and crosslinking the dehydrated macromolecules with a crosslinking agent while in a liquid phase or with heat. Preferably, the dehydrating agent is a polymer mixture of polyvinylpyrrolidone and polyethylene glycol, the crosslinking reagent is glutaraldehyde, and the macromolecule is a protein, most preferably an immunoglobulin. Methods of use for research, diagnostics and therapeutics are also provided.
Patent CA-2161886-C (CA)
Inventor: SATAKE KUNIO
IPC: A61P25/04
Filed: 1994-05-13
Granted: 1999-12-07
Abstract: Compounds useful in the treatment of inflammatory dis-orders, central nervous system disorders and other disorders of formula (I) and the pharmaceutically-acceptable salts thereof; wherein R is C1-C6 alkyl; X is C1-6 alkyl having one or more substituents which include at least one heteroatom; Ar1 and Ar2 are each , independently, aryl optionally substituted by one C1-C6 alkyl, C1-C6 alkoxy, C1-C6 allkylthio, halogen, cyano, nitro, phenoxy, mono C1-C6 alkylamino, di C1-C6 alkylamino, halosubstituted C1-C6 alkyl, or halosubstituted C1-C6 alkoxy; Y is hydrogen, C1-C6 alkyl, C2-C6 alkenyl C3-C8 cycloalkyl, Z(CH2)p-, or W-(CH2)m-CHR2(CH2)n-NR1CO- wherein Y is at the 4-, 5-or 6-position on the quinuclidine ring; R1 is hydrogen, C1-C6 alkyl, benzyl or -(CH2)r-W; R2 is hydrogen or C1-C6 alkyl which may be substituted by one hydroxy, amino, methylthio, methylmercapto, benzyl, 4-hydroxybenzyl, 3-indolylmethyl or -(CH2)r-W; R1 may form a ring with R2; Z is C1-C6 alkoxy,-CONR4R5,-CO2R4,-CHR4OR5,-CHR4NR5R6,-COR4,-CONR4OR5 or optionally substituted aryl; each W is independently cyano, hydroxymethyl, C2-C6 alkoxymethyl, mono C1-C6 alkylaminomethyl, di C1-C6 alkylaminomethyl, carboxyl, carbamoyl or C1-C6 alkoxycarbonyl; R4, R5 and R6 are independently hydrogen, C1-C6 alkyl, C1-C6 alkoxy, C3-C8 cycloalkyl or an optionally substituted aryl or heterocyclic group; p is 0 to 6; and m, n and r are each, independently, 0 to 3.
Patent CA-2162604-C (CA)
Inventor: SUZUKI YASUO
IPC: A61K31/565
Filed: 1994-05-18
Granted: 2002-09-17
Abstract: An osteogenesis promoter and/or osteoporosis remedy comprising, as an active ingredient, an androgen derivative represented by the following formula (I): (see formula I) wherein each broken line indicates that the relevant carbon-to-carbon bond is a single bond or a double bond or a salt thereof.      The compound (1) activates osteoblasts, promotes osteogenesis and increases the bone mass, so that it is used for the treatment of a morbid condition of lowered osteogenesis due to aging, immobilization, administra-tion of glucocorticoids and so forth. Further, it can increase the bone mass by its osteogenesis promoting effect so that it is useful for the treatment of osteoporosis accompanying the above morbid condition or occurring after ovariectomy or menopause.
Patent CA-2163456-C (CA)
Inventor: LORI FRANCO
IPC: B65F1/00
Filed: 1994-05-17
Granted: 2009-06-23
Abstract: Méthode d'inhibition de la réplication d'un virus à transcriptase inverse abrité par des cellules végétales ou animales. La méthode consiste à administrer à ces cellules un composé qui épuise les réserves intracellulaires de phosphate de désoxyribonucléoside dans des proportions suffisantes pour interdire la réplication dudit virus. L'hydroxyurée est l'un de ces composés appropriés. L'invention porte également sur une méthode permettant d'obtenir un ADN viral à transcriptase inverse incomplète en administrant à des cellules infectées par un tel virus une substance épuisant le phosphate de désoxyribonucléoside.
Patent CA-2164245-C (CA)
Title: Locking differential including access windows for c-clip retainers
Inventor: VALENTE PAUL J
IPC: F16H48/40
Filed: 1995-12-01
Granted: 2000-06-06
Abstract: A locking differential includes a housing containing a chamber and a pair of opposed openings for receiving a pair of axially spaced output shafts, respectively, a pair of side gears adapted for non-rotatable connection with the respective output shafts, concentrically arranged annular center driver gear and center cam members arranged coaxially about the adjacent ends of the output shafts, and annular clutch members operable by the center cam member to disconnect an overrunning output shaft, characterized in that the center driver gear and center cam members contain radially extending access openings to permit manual mounting of C-clip retainers in peripheral grooves contained in the adjacent ends of the output shafts.
Patent CA-2165898-C (CA)
Inventor: RESCALLI CARLO
IPC: B01J12/02
Filed: 1995-12-21
Granted: 2007-04-10
Abstract: A process for the synthesis of urea from ammonia. and carbon dioxide, comprising a reaction step carried out in at least two distinct operating zones basically at the same pressure, but having a different operating temperature, the difference being preferably between 5 and 60°C, and subsequent separation steps of the non-converted reagents, wherein a gaseous stream is transferred from the first zone, at a higher temperature, to the second zone, at a lower temperature, and a liquid stream, containing urea and/or ammonium carbamate, is transferred from the second zone to the first, so that said gaseous steam is preferably at least 5% by weight with respect to the stream effluent from the first zone to the subsequent separation steps. This process allows a ratio urea/(urea+carbamate), in the stream leaving said reaction step, of more than 70%, to be obtained.
Patent CA-2169880-C (CA)
Inventor: KOKKO PEKKA
IPC: B27L11/00
Filed: 1996-02-20
Granted: 2001-01-30
Abstract: The object of the invention is an apparatus for clamping a chipper knife (1) to a rotatable chipper disc (4) or drum so that the back surface (6) of the knife (1) is supported against a knife clamp (2) with a knife spacer (3), and that the knife clamp (2) and knife spacer (3) are movable relative to each other by means of the clamping element (5). The knife clamp (2) is provided with supporting surfaces (11, 12) which the back surface (6) of the knife (1) is adapted to lean against by at least two spaced-apart surfaces (11', 12'). The knife spacer element (3) includes a supporting surface (13) which is adapted to subject a front surface (14) of the knife (1) to a force acting between said supporting surfaces (11, 12) of the knife clamp (2) for bending the knife (1) between said supporting surfaces (11, 12) of the knife clamp (2) towards the knife clamp (2) so as to generate a compression stress in the free section of a front surface (16) of the knife (1).
Patent CA-2170270-C (CA)
Title: Thin film multilayered electrode of high frequency electromagnetic field coupling
Inventor: ISHIKAWA YOUHEI
IPC: H01P3/12
Filed: 1994-03-07
Granted: 2000-05-16
Abstract: A plurality of TEM mode transmission lines (L2-L5) are structured by pairs of thin film conductors (21 and 22, 22 and 23, 23 and 24, and 24 and 25) which sandwich thin film dielectrics (31 to 34) by alternately stacking the thin film conductor  (21 to 25)  and the thin film dielectric (31 to 34).  The phase velocities of TEM mode waves  which  are  propagated  at  least  by  two  of  the transmission lines (L2 to L5) are substantially equal to each other.   The thickness of each of  the thin film conductors (21 to 25) is smaller than the skin depth of the frequency used so that the electromagnetic fields of at least two TEM mode transmission lines among the TEM mode transmission lines (L2 to L5) are coupled to each other.          In this way, the skin depth can be increased effectively.          The conductor loss and the  surface resistance can be reduced  significantly  as  compared  to  those  of  the conventional  electrode.   By use of  this electrode,  a transmission line,  a resonator,  a  filter,  and a high frequency device are structured.
Patent CA-2170893-C (CA)
Title: Method and device for controlling time slot contention to provide fairness between a plurality of types of subscriber units in a communication system
Inventor: TRAN PHIEU MOC
IPC: H04W74/02
Filed: 1995-05-15
Granted: 2000-06-13
Abstract: The present invention provides a unique access control scheme (100) for assigning a plurality of time slots in a fair manner among subscriber  units (508, 514) using a single time slot in a frame and subscriber  units (508, 514) using multiple time slots in a frame in a communication system.
Patent CA-2172336-C (CA)
Inventor: DUFOUR RENEAU
IPC: B01D17/035
Filed: 1996-03-21
Granted: 2001-09-04
Abstract: Disclosed is a clarifier for use in treating a liquid containing non-soluble particles in suspension in order to separate these particles from the liquid. It comprises a tank, a liquid supply duct opening into the bottom portion of the tank and an injector for injecting a gas under pressure into at least part of liquid supplied to the supply duct in order to saturate this liquid with said gas and thus to generate gas bubbles as the saturated liquid is subject to depressurization within the tank. The gas bubbles that are so- generated adhere to the particles in suspension in the liquid and lift them up to form a floating layer of sludge in the top portion of the tank. A scraper is provided in the top portion of the tank for skimming off the layer of sludge while it is formed. A plurality of plates extend at an angle within the tank above the supply duct. These plates define a set of upwardly inclined channels each having an upper end that is opened and through which the liquid fed into the tank may enter the channel. A liquid outlet mounted within the lower end of each channel to collect and remove from the tank the liquid that has been treated within the same. Thanks to its shape and structure, this clarifier occupies a surface area on the ground that is 50% or less smaller than any known clarifier of the same capacity. Its structure also permits to maintain much more microbubbles of requested size for a same amount of injected air in order to increase the probability of contact between the particles and the air bubbles.
Patent CA-2176407-C (CA)
Title: Regeneration of a titanium-containing molecular sieve
Inventor: CROCCO GUY L
IPC: C07D301/12
Filed: 1996-05-13
Granted: 2007-07-17
Abstract: A titanium-containing molecular sieve which has been used as an oxidation catalyst is regenerated to provide a level of performance comparable to that of freshly prepared catalyst by heating at less than 400°C in the presence of molecular oxygen. The same batch of catalyst thus may be used over an extended period of time in a continuous epoxidation process by periodic practice of the aforedescribed reactivation method.
Patent CA-2184983-C (CA)
Title: An intravascular treatment system and percutaneous release mechanism therefor
Inventor: HALL TODD A
IPC: A61B17/12
Filed: 1995-03-08
Granted: 2009-06-02
Abstract: A percutaneous release mechanism for use with an intravascular treatment device in an intravascular treatment system. The release mechanism includes an inner member having a connection mechanism positioned about the distal end thereof for interconnection with another connection mechanism positioned on an intravascular treatment device. The release mechanism also includes an outer member tube of which the inner member is positioned therein. The first and second connection mechanisms are interconnectable and positionable in the passage of the tube for delivering the treatment device in a delivery state to the treatment site. The release mechanism also includes a handle having parts connected to the inner member and outer tube, whereby movement of the proximal end of the inner member is translated to the distal end thereof for extending the interconnected connection mechanisms from the passage of the outer member tube and positioning the treatment device in a treatment state. The intravascular treatment system includes the percutaneous release mechanism along with the intravascular treatment device. The treatment device includes an occlusion coil and a rigid tube connected to the flexible outer member tube for maintaining the delivery coil in a delivery state. In another example, the treatment device includes a blood clot filter in which the percutaneous delivery mechanism is adapted for connection thereto.
Patent CA-2185064-C (CA)
Inventor: TAKANISHI TOSHIAKI
IPC: B62D25/24
Filed: 1996-09-09
Granted: 2001-02-13
Abstract: The present invention provides a luggage compartment construction comprising a spare tire house provided under a luggage compartment to contain a spare tire, a spare tire board for closing an opening of the spare tire house, and a back panel trim for covering a back panel member disposed at the lower rear part of the luggage compartment, in which a box-shaped storage portion, which is used as a container, is integrally formed at the lower part of the back panel trim by extending the lower part of the back panel trim to the lower rear side of the spare tire board and by bending the extended portion.