baber/WOPTO huggingface dataset:
Patent CA-2247445-A1 (CA)
Title: Method and well tool for gravel packing a well using low-viscosity fluids
Inventor: JONES LLOYD GARNER
IPC: E21B43/04
Filed: 1997-02-21
Abstract: A method and well tool (10) for using a low-viscosity slurry (22) to gravel pack an interval (12). The well tool (10) is comprised of a conduit which includes a main screen (17) and an upper by-pass screen (18). The tool (10) is lowered into the interval (12) and slurry (22) is pumped into the annulus (23) around the screen (17) whereby fluid from the slurry is lost into the casing perforations (14) while the gravel (25) falls to the bottom of the annulus (23) to form the gravel pack (26). When the gravel (25) rises above the uppermost perforations (14), fluid (24) from the slurry (22) by-passes the gravel pack (26) by flowing into the by-pass screen (18), through a washpipe (21) in the conduit, and out the lower end of the main screen (17) to thereby pack perforations (14) in the casing (13) and to improve the gravel distribution of the gravel pack (26) within the annulus (23)
Patent CA-2247663-A1 (CA)
Title: A lift mechanism for a passenger loading bridge
Inventor: FREEDMAN GORDON
IPC: B64F1/305
Filed: 1998-09-16
Abstract: The present invention relates to a passenger loading bridge, in particular to an apparatus for synchronising two motors used in raising the passenger loading bridge. Synchronisation is achieved by physically coupling the drive shafts of the motors together to ensure that the shafts rotate at a same speed. Each drive shaft is then coupled to a lift mechanism for lifting and lowering a side of the passenger loading bridge such that each side is lifted and lowered in union.
Patent CA-2249166-A1 (CA)
Inventor: COLURCIELLO ANDREW FRANCIS JR
IPC: C11D1/14
Filed: 1998-09-30
Abstract: Cleaning and surface treatment compositions which are particularly useful in thecleaning of leather, vinyl, plastic, rubber and other similar surfaces as well as providing a surface coating thereupon. The cleaning compositions include reduced amounts of emulsified silicone oils in an aqueous formulation. The compositions are readily dispensible from conventional dispensing devices, and provide simultaneous cleaning to a treated surface, as well as imparting a glossy surface coating.
Patent CA-2251719-A1 (CA)
Title: Fibre a coeur elliptique a rapport de dimensions a decroissance axiale et procede
Inventor: HAWK ROBERT M
IPC: C03B37/012
Filed: 1997-04-11
Abstract: Cette invention concerne une fibre optique unimodale à coeur elliptique convenant à la transmission de solitons. Cette fibre présente un rapport de dimensions du coeur qui change sur la longueur de la fibre de manière à ce que la dispersion dans la fibre présente une décroissance longitudinale monotone d'une extrémité à l'autre de ladite fibre. Une préforme de fibre est étirée à partir d'un flanc à étirer ayant un coeur en verre entouré d'un verre de gainage et ayant des ouvertures diamétralement opposées par rapport au coeur. L'espace vide existant entre lesdites ouvertures a une section transversale dont la surface varie relativement à la distance longitudinale le long des ouvertures.
Patent CA-2252618-A1 (CA)
Title: Polyolefin film, compositions and resins useable therefor
Inventor: RADOSTA JOSEPH A
IPC: C08K3/34
Filed: 1997-04-22
Abstract: This invention concerns a mixture of a first component selected from talcs and a second component selected from feldspars, nephelines and nepheline syenites, wherein the ratio of the first component to the second component provides an enhanced abrasiveness property. The invention further relates to an antiblock agent made from such mixture. This mixture provides favorable optical properties when used in a polyolefin film. This invention also relates to a polyolefin resin composition having the mixture therein, as well as to films made with such.
Patent CA-2252904-A1 (CA)
Title: Tung tree extracts useful for controlling termites
Inventor: HUTCHINS RACHEL A
IPC: A01N65/00
Filed: 1997-04-30
Abstract: Termite-active extracts of the wood and kernels of the tung tree Aleurites spp., compositions thereof, and methods of use thereof.
Patent CA-2253804-A1 (CA)
Inventor: CRIBBS LEONARD V
IPC: C08F4/609
Filed: 1997-05-01
Abstract: A catalysis system containing an olefin polymerization catalyst having at least one Group 3 to Group 10 transition metal or one of the Lanthanide series of the Periodic Table and an organic support is homogeneous and has particular applicability in the producttion of polyolefins having narrow molecular weight distribution. The support of the catalysis system is the reaction product of a silicone and a polyamine. The catalysis system has high thermal stability.
Patent CA-2254010-A1 (CA)
Title: Assays for measurement of protein fragments in biological media
Inventor: DOWNS JAMES THOMAS
IPC: C12N15/09
Filed: 1998-11-10
Abstract: This invention provides novel antibodies and engineered versions thereof and methodology for monitoring biological media for protein fragments, especially collagen fragments resulting from collagenase cleavage of type II collagen.
Patent CA-2254396-A1 (CA)
Title: Asymmetrical encoding/decoding method and apparatus for communication networks
Inventor: GIARDINA CHARLES R
IPC: H04B1/707
Filed: 1998-11-18
Abstract: In accord with the transmission system, encoded signals may be processed in intermediate stations and at receiving stations in an order differe nt from the order of the original encoding process for transmission. In particular, the recovery of CDMA encoded signals does not require application of spreading/despreading codes in the original scheme or sequence of application of spreading codes. In one embodiment, code applications may be permuted without losing the original signal which has been encoded. In such applications, not all of the encoding spreading functions results in an increased spreading rate.
Patent CA-2255970-A1 (CA)
Title: Switched capacitor system for automatic battery equalization
Inventor: PASCUAL CESAR
IPC: H02J7/00
Filed: 1997-05-20
Abstract: A switched capacitor system (10) for automatic battery equalization can be used with series coupled batteries (13) as well as primary and backup batteries which are alternately couplable to a load. The system includes a plurality of capacitors (14) and a plurality of switching elements (16). Each of the capacitors is switched back and forth between a predetermined pair of batteries for the purpose of transferring charge therebetween and equalizing the output voltages of each of the batteries in the pair. The capacitors and switching element can be configured in a modular fashion. Multiple modules can be used, for example, in combination with multiple batteries which are series coupled to one another. The system could be used in electric vehicles and in battery backup systems of all types.
Patent CA-2256022-A1 (CA)
Title: 3-pyridyloxymethyl heterocyclic ether compounds useful in controlling chemical synaptic transmission
Inventor: HOLLADAY MARK W
IPC: C07D407/14
Filed: 1997-06-04
Abstract: Novel 3-pyridyloxymethyl heterocyclic ether compounds of formula (I) or the pharmaceutically-acceptable salts or prodrugs thereof are selective and potent ligands at neuronal nicotinic cholinergic channel receptors, and are effective in controlling synaptic transmission.  Key intermediates and processes using this key intermediates to produce compounds of formula (I) with the variables defined in the specification are also described.
Patent CA-2256723-A1 (CA)
Title: Modification method of functional group on pressure-sensitive adhesive surface
Inventor: TSUCHIYA HAJIME
IPC: C09J7/02
Filed: 1997-05-27
Abstract: A method for the modification of the surface of a pressure-sensitive adhesive with a functional group whereby a functional group effective in improving and regulating the adhesion can be densely and stably introduced into the surface of a pressure-sensitive adhesive. In this method, a functional group is immobilized onto the surface of a pressure-sensitive adhesive by an interfacial catalytic reaction of a pressure-sensitive adhesive phase with a phase containing a functional group-containing compound.
Patent CA-2257113-A1 (CA)
Inventor: DELA CRUZ FERNANDO E
IPC: G01N33/15
Filed: 1997-05-30
Abstract: L'invention concerne un procédé d'identification de ligands de récepteurs d'ecdysones. Un extrait cellulaire de levure transformée comprenant un récepteur d'ecdysone et un partenaire de liaison d'un récepteur d'ecdysone est utilisé afin d'identifier les ligands de récepteurs d'ecdysones.
Patent CA-2257807-A1 (CA)
Inventor: CHASIN MARK
IPC: A61P11/08
Filed: 1997-06-06
Abstract: Novel and improved methods for preparing 3-substituted adenines and 3,8-di-substituted 6-aminopurine derivatives for use as cyclic nucleotide phosphodiesterase inhibitors are provided.
Patent CA-2257953-A1 (CA)
Inventor: TONG LEON
IPC: H04W64/00
Filed: 1997-03-27
Abstract: Le procédé faisant l'objet de cette invention consiste à recevoir (404) sur une première station de base (212) un signal (215) transmis depuis la station mobile (216); à démoduler (406) ce signal à la première station de base (212) afin de former un signal démodulé; à remoduler (408) au moins une partie du signal démodulé pour former un signal de référence; à recevoir (412) sur la première station de base (212) et sur une seconde station de base (210, 214) un signal retransmis (217); à comparer (414, 416) sur la première station de base (212) le signal retransmis (217) avec le signal de référence, afin de déterminer un premier décalage; à comparer (414, 416), sur la seconde station de base (210, 214), le second signal retransmis (217) avec le signal de référence, afin de déterminer un second décalage; et, sur la base de ces premier et second décalages, à déterminer (420) la position de la station mobile (216).
Patent CA-2259453-A1 (CA)
Title: Cleansing compositions
Inventor: DU REAU CHARLES MARIE ALAIN
IPC: A61K8/87
Filed: 1997-07-02
Abstract: A liquid personal cleansing composition comprising: (a) from about 0.01 % to about 15 % by weight of a thickening system consisting essentially of associative polymer and polar oil having a required HLB of at least 12; (b) from about 1 % to about 60 % by weight of water-soluble surfactant selected from anionic surfactant, nonionic, zwitterionic and amphoteric surfactants and mixtures thereof; (c) optionally, from about 0.01 % to about 5 % by weight of cationic polymeric skin conditioning agent; and (d) water, wherein the polar oil has an average carbon chain length of from about 10 to about 18 carbon atoms and wherein the water-soluble surfactants have an average carbon chain length of from 10 to about 18 carbon atoms. The products provide excellent product thickening and rheological attributes, in storage, in dispensing and in-use, in combination with good efficacy benefits including excellent rinsibility, mildness, skin conditionning, skin moisturising, good product stability, cleansing and lathering.
Patent CA-2260330-A1 (CA)
Title: Process for the preparation of aqueous solutions of betaine
Inventor: CARROLL WILLIAM E
IPC: B01J23/44
Filed: 1999-01-25
Abstract: Betaine is produced by the oxidation of a choline salt in the presence of a supported noble metal catalyst at temperatures from about 20~C to 100~C and pressures from atmospheric to about 100 psi.  This process is advantageous over prior processes for the production of betaine in that no amine halocarboxylate contaminants are produced by this reaction.
Patent CA-2261038-A1 (CA)
Title: Fluid flow resistance monitoring system
Inventor: FARQUHAR ALLEN B
IPC: A61M5/142
Filed: 1997-07-29
Abstract: Flow parameters in a fluid delivery assembly are determined by monitoring pressure responses and processing those responses along with information regarding the fluid flow. In one aspect, a processor controls the pump to pump flow quantities in accordance with a pseudorandom code. Portions of the resulting pressure signal sensed are then decoded in accordance with pseudorandom code. An estimate of the equilibrium pressure is generated from the decoded pressure values, while a summation of the pressure samples is generated from the undecoded pressure signals. The resistance to fluid flow of the system is determined from the estimated equilibrium pressure and pressure summation. For low flow rates, a processor controls the pump to pump fluid in a series of fluid boluses, with each fluid bolus delivered in the beginning of a separate timeslot. The equilibrium pressure is measured at the end of each timeslot, and summation of the pressure samples is generated from the pressure signals. For high flow rates, the pump is controlled to vary the flow rate and the change in pressure is divided by the change in flow to directly determine the resistance. A  resistance display continuously displays the resistance of the system. The pseudorandom coding and decoding can be used to filter out pressure-response crosstalk caused by multiple fluid infusion segments feeding into a common line.
Patent CA-2265605-A1 (CA)
Title: Method and apparatus for training a shooter of a firearm
Inventor: ROD SAMUEL R
IPC: F41G3/26
Filed: 1997-09-17
Abstract: A video camera (12) mounted on eyewear (32) worn by a shooter (30) produces displayed images used by the shooter in aiming the firearm. The displayed image, rather than a direct view of a target is used in aiming the firearm. These images may be subsequently viewed by the shooter or an instructor from videotape (94). A viewer of the displayed image is able to see the aiming as the shooter actually sees it, and correlates it with success or failure in hitting a target.
Patent CA-2265721-A1 (CA)
Inventor: GREBNEV ANDRE
IPC: G01S1/24
Filed: 1997-08-07
Abstract: This disclosure deals with processing radio-frequency navigation signals, particularly Loran-C signals, from crossed loop antennas (H-field antennas) by shifting the signal phase from two loops to be in quadrature with respect to each other and adding them together to achieve omnidirectivity of the antenna pattern during the acquisition mode; using the stronger signal of the two during the cycle selection mode to determine the polarity of the received signals; and calculating the relative bearing angles on transmitting stations to determine, with measured bearing, the orientation of the loop antenna with respect to these stations.
Patent CA-2268653-A1 (CA)
Title: Composite material with a high proportion of intermetallic phases, preferably for friction bodies
Inventor: HEINRITZ MANFRED
IPC: C22C38/00
Filed: 1998-08-08
Abstract: A metallic cast material for friction bodies in acceleration or deceleration devices, particularly in the brake or clutch systems of road or rail vehicles, is produced from the ternary group iron-aluminium-carbon in an intermetallic phase having an ordered crystal lattice structure and free carbon. The free carbon may be in lamellar, sphoroidal or vermicular form. The proportion of aluminum in the alloy is between 20 and 28%  by weight, preferably 24% by weight. The material may be melted and cast open to the ai:r.
Patent CA-2270395-A1 (CA)
Title: Disposable pull-on garment having improved tear open handling after soil
Inventor: CHAN JOHN GEOFFREY
IPC: A61F13/15
Filed: 1997-05-30
Abstract: The present invention is directed to a dispos-able pull-on garment. The disposable pull-on gar-ment of the present invention comprises a chassis having a front region, a back region and a crotch re-gion between the front region and the back region.      The chassis comprises a liquid pervious topsheet, a liquid impervious backsheet associated with the top-sheet, and an absorbent core disposed between the topsheet and the backsheet. The disposable pull-on garment of the present invention further comprises front side panels extending laterally outwardly from each side of the chassis in the front region; back side panels extending laterally outwardly from each side of the chassis in the back region; seam pan-els each extending laterally outwardly from each of the front and back side panels; a tear open tab ex-tending laterally outwardly from at least one of the seam panels; and seams each joining the correspond-ing seam panels in an overlap manner to make an overlapped seam structure, thereby forming two leg openings and a waist opening. The position of the tear open tab is biased between the leg opening and the waist opening.
Patent CA-2273209-A1 (CA)
Title: Filter with counter flow clearing
Inventor: OBST YURI
IPC: B01D29/96
Filed: 1997-12-01
Abstract: A filter system (10) comprising a filter medium (11) for filtering contaminants from a process fluid, having a filtration side on which contaminants collect and a filtrate side from which filtrate flows; a counter-flow generator (20) located on the filtrate side that directs a localised stream of counter-flow fluid (23) from the filtrate side to the filtration side of the filter medium (11) to thereby dislodge the contaminants from the filtration side of the filter medium (11), wherein the localised stream (23) traverses a substantial proportion of the filter medium (11). The filter system (10) optionally further comprises a clearing-flow generator (30) or like means located on the filtration side of the filter medium (11) which clears contaminants from the filter medium (11).
Patent CA-2273586-A1 (CA)
Title: Method and system to connect an unanswered forwarded communication directly to a voice mail service
Inventor: MALIK DALE W
IPC: H04M3/58
Filed: 1999-06-02
Abstract: Methods and systems in a telecommunications system having a call forwarding service to connect an unanswered forwarded communication directly to a voice mail service of the called party. Upon notice that a communication for a subscriber has gone unanswered at a forwarded location, a call is placed to a code followed by voice mail information. As the call is routed, the code is recognized and the voice mail information is parsed into call instructions including a voice mail directory number as the redirected number. The call is further routed based on the call instructions until a recognition of the designated directory number in the call instructions results in call termination instructions. These instructions direct the serving switch to connect the call to the redirected number which is the voice mail service directory number. Once the call is connected to the voice mail service, the call is transferred to the unanswered forwarded communication so that the caller may leave a message in the voice mail service for the subscriber.
Patent CA-2273909-A1 (CA)
Title: Process for forming a thin-walled elastomeric article
Inventor: STEPHENSON PETER JOHN
IPC: A61F6/04
Filed: 1997-12-11
Abstract: Thin walled elastomeric articles are made by electrostatically depositing a coating of an elastomeric composition on a rigid shaped former (24), consolidating the coating and then stripping the article (30) from the former. Gloves and condoms are among the articles which can be made in this way.
Patent CA-2276386-A1 (CA)
Inventor: LASHOMB DONALD
IPC: A45D44/18
Filed: 1999-06-28
Abstract: A cover is provided to protect an implement, such as a toothbrush. The cover includes a container having a resilient portion and an interior space to receive and releasably retain at least a portion of the implement. An expandable opening is formed within the resilient portion.      The opening is in communication with the interior space. The opening expands in response to an external force so that at least a portion of the implement can be inserted. After the implement is inserted, the external force may be released so that the opening may contract. An externally operated control member associated with the container is provided to selectively control the expansion and contraction of the opening.
Patent CA-2277001-A1 (CA)
Title: Variable trip fault indicator
Inventor: BANTING JOHN FREDERICK
IPC: H02H3/05
Filed: 1999-07-08
Abstract: In a power distribution system, a reliable, accurate, and energy efficient fault circuit indicator is provided through a microcomputer-based fault current indicator design. First, reliability is improved inherently because the microcomputer, and the software embedded therein, replace the functionality of numerous discrete, less reliable electronic components found in prior designs. Second, the embedded software is capable of placing the fault current indicator in one of a number of energy conservation states, without compromising the fault current indicator's ability to provide information relating to the occurrence of a fault. Finally, greater fault current indication accuracy is achieved by detecting excessive line current, followed by a significant drop in line voltage.
Patent CA-2277632-A1 (CA)
Title: Improved dispenser
Inventor: WRIGLEY ANDREW NICHOLSON
IPC: B29C49/00
Filed: 1999-07-16
Abstract: The present invention provides a liquid dispenser which is adapted to connect to a container, the container including a membrane seal, wherein the dispenser is movable between two configurations being an unopened configuration to an open configuration which opens a liquid channel from the liquid dispenser to the container cap, and which pierces the membrane seal to open a liquid channel from the container through to the dispenser. A method of manufacturing such a dispenser is also disclosed.
Patent CA-2280323-A1 (CA)
Title: Assembly and method for the extraction of fluids from a drilled well within a geological formation
Inventor: TORNQUIST FERNANDO MARIA SOLAN
IPC: E21B43/16
Filed: 1999-08-13
Abstract: The present invention includes an assembly and method to pump fluids produced by a drilled well within a geological formation having a borehole wall fixed by casing. The invention includes a subsurface pump having a stationary member and a mobile member. A pump anchor fixes the pump to the well casing. A hollow continuous tube or coiled tubing extends within the well bore from the surface down to the lower portion of the well bore. The bottom end of the coiled tubing is connected to the mobile member of the pump. Preferably, the coiled tubing can be coiled and uncoiled from a reel located on the surface. A hollow polished rod has a bottom end coupled to a free top end of the coiled tubing. The hollow polished rod is connected to means to operate the hollow rod according to a selected movement, preferably reciprocating axial movement. The pumped fluids are recovered on the surface from the hollow polished rod and coiled tubing.
Patent CA-2284076-A1 (CA)
Inventor: GLASS GERALD E
IPC: E05B15/02
Filed: 1999-09-28
Abstract: A latch dog assembly for latching and unlatching a storage bin door includes a latch dog member having a base portion, an end wall portion, and a cylindrical wear block member which extends outwardly from an opening on the inner wall of the end wall member so as to allow a latching cam to properly secure the bin door while avoiding undesired metal to metal contact. In one embodiment of the invention, a dimple extends outwardly from the latch dog member base portion upper surface so as to assist in retaining the wear block member within the opening in the inner face of the end wall portion.