baber/WOPTO huggingface dataset:
Patent CA-2212751-A1 (CA)
Inventor: CHARBONNEAU SYLVAIN
IPC: H01L21/266
Filed: 1996-02-28
Abstract: Procédé d'accord d'une hétérostructure à puits quantique dans laquelle des ions sont implantés dans ladite hétérostructure par implantation ionique, selon lequel les ions sont implantés de manière à ce que différentes régions soient implantées afin de créer différentes concentrations de défauts. Cela produit des énergies de bande interdite variables pour les différentes zones de l'hétérostructure pendant un traitement thermique ultérieur, ce qui élimine les défauts résiduels et provoque un mélange dans la région du puits quantique permettant d'obtenir une structure à bande interdite sélectivement décalée.
Patent CA-2213377-A1 (CA)
Inventor: BOTROS RAOUF
IPC: D06P1/52
Filed: 1997-08-19
Abstract: A pretreatment solution for a cellulosic fabric to be printed, allows the printed fabric to maintain color brightness and image permanence.  The pretreatment solution comprises a mixture of water, a salt, and a hydroxyalkyl imine derivative.  The hydroxyalkyl imine derivative is selected from the group consisting of branched polyethyleneimine polymer, diphenylguanidine, hydroxyethyl and hydroxypropyl.  In a preferred embodiment of the present invention, the branched polyethyleneimine polymer comprises ethoxylated polyethyleneimine.
Patent CA-2214984-A1 (CA)
Title: Direct iron and steelmaking
Inventor: SHERWOOD WILLIAM LYON
IPC: C21B13/14
Filed: 1996-01-25
Abstract: The process of the invention comprises gaseous reduction of iron oxides in solid state combined with concurrent melting of the hot reduced iron within a closed system without cooling down the charge or exposing it to the outside atmosphere. It incorporates the continuous recycling of a major portion of the off-gases from reduction, and fully utilizes the chemical heat contained in the fuel and reductant by substantially complete oxidation to CO2 and H2O in the system gaseous reaction products and recovery of their sensible heat, prior to final exhaustion as waste gases. Features includes dewatering of the off-gas from reduction, enriching with hydrocarbon and recycling a major portion, and separately combusting a minor portion for transfer of the sensible heat to the enriched major portion, and also usually the combustion of a second minor portion with oxygen as fuel for melting, with the sensible heat of these combustion products also utilized for heating the enriched and recycled portion. The reduction stage is suitably conducted in a gas-solid reaction zone within a shaft furnace, and the melting in a gas-solid-liquid reaction zone within a rotary furnace which also contains a gas-liquid reaction zone adapted for controlling the liquid iron temperature and composition. Supplemental materials such as iron and steel scrap, alloys and fluxes may be added directly into the rotary furnace, and the product may be discharged either batch-wise or continuously be siphoned into an evacuated withdrawal chamber for final alloying and refining prior to casting.
Patent CA-2215162-A1 (CA)
Inventor: EFSTATHIOU STACEY
IPC: A61K48/00
Filed: 1996-03-25
Abstract: Cette invention concerne des préparations d'amplicons d'herpèsvirus qui comportent une origine de réplication, une séquence d'encapsulation, et au moins un gène inséré sous contrôle d'un promoteur, et qui peuvent servir d'immunogène ou de vaccin, en association avec un herpèsvirus assistant ou un ADN, le virus assistant associé ayant une compétence restreinte en matière de réplication dans une cellule hôte normale, ledit virus assistant associé présentant, par exemple, un défaut le rendant inactif vis-à-vis d'un gène essentiel pour la production de particules infectieuses d'un nouveau virus, et l'amplicon portant un gène inséré nécessaire à la propagation du virus assistant.
Patent CA-2217986-A1 (CA)
Title: Fuel injection device for internal combustion engines
Inventor: HEIMBERG WOLFGANG
IPC: F02M51/04
Filed: 1996-04-23
Abstract: A fuel injection device works based on the principle of storage of energy in a solid body and is designed as a reciprocating piston pump with a delivery piston (35, 24) that is moved from its initial position towards a compression chamber (66) and stores kinetic energy during an almost resistance-free acceleration phase. The stored kinetic energy is abruptly transmitted by an impact to the fuel contained in the compression chamber (66), generating a pressure wave for injecting fuel through an injection nozzle. A second compression chamber (66') is arranged at the side of the delivery piston (35, 24) opposite to the first compression chamber (66), so that the kinetic energy stored by the delivery piston (35, 24) when it returns to its initial position is transmitted to the fuel contained in the second compression chamber (66').
Patent CA-2218999-A1 (CA)
Title: Bioretentive filtered infusion catheter
Inventor: ELSBERRY DENNIS D
IPC: A61M39/02
Filed: 1996-04-15
Abstract: A bioretentive filtered infusion catheter comprises a cylindrically shaped bioretentive filter inserted into a catheter lumen to prevent passage of microbial agents during a drug infusion process. Filter material placed within the catheter fluid flow path captures fluid contaminants. Alternatively, the filter material is disposed within a filtering assembly comprising a fluid conduit adapted for use with a previously implanted infusion catheter or an infusion pump.
Patent CA-2219985-A1 (CA)
Title: Cantilevered hole opener
Inventor: RIVES ALLEN KENT
IPC: E21B10/22
Filed: 1997-02-28
Abstract: A hole opener for enlarging the diameter of bore holes, having a plurality of cantilevered spindles (6) for supporting rotatably attached cutter shells (9) having hardened surfaces for cutting and crushing to widen the bore hole. The cutter shells are supported on an inner threaded journal (13) which permits a plurality of load bearing rollers or bearings (26) to facilitate rotational movement of the cutter. The hole opener is provided on a tubular body which is connected in a drill string and which provides jetting nozzles (4) to remove the cutting debris and return it to the earth's surface. The cantilevered support spindle (6), journal (13) and cutter shell (9) assembly permit flexible interchange of cutter faces and sizes to be available for use with the same hole opener body and different directions of travel of the body.
Patent CA-2222112-A1 (CA)
Inventor: OKA KEIKO
IPC: C08F8/00
Filed: 1997-11-25
Abstract: A polyvinyl alcohol hydrogel has a surface layer comprising a net-like structure formed by entanglement of fiber-like articles having a diameter of 0.1 to 50 µ m. This gel has a large surface area and high capability of adhering microorganisms and permeating liquid, thereby exhibiting excellent purifying function. Processes for producing the above hydrogel are also provided.
Patent CA-2222216-A1 (CA)
Title: Electrical fault interrupt with frayed cord protection
Inventor: NEMIR DAVID C
IPC: H02H3/00
Filed: 1996-05-23
Abstract: A circuit for the avoidance of electrical shock and burns in an electrical appliance. Designed primarily for a two wire appliance, the device consists of a conditioning circuit at the load and a fault sensor/interrupter at the plug. The conditioning circuit halts the flow of current to the load for a portion of each cycle of an AC excitation. If current flow is detected at the plug during this time interval, it is indicative of a fault condition and a circuit breaker at the plug is opened. A fault is detected if one of the following conditions occurs: 1) a resistive path is established between hot to ground; 2) a load other than the conditioned load is placed between hot and neutral; and 3) an overtemperature condition is detected at the load. The circuit is self-resetting so that in the absence of a hot to ground fault, hot to neutral fault, or overtemperature condition, electrical current is allowed to flow.
Patent CA-2223409-A1 (CA)
Title: Try before you buy software distribution and marketing system
Inventor: RONNING JOEL A
IPC: G06Q20/08
Filed: 1996-06-07
Abstract: A computer-based system is provided for demonstrating software programs to a potential purchaser and for gathering marketing information related to the demonstration of the programs. The system enables the software programs for execution upon selection by a user, and allows the user to subsequently operate or sample the selected software program. The system maintains the selected software program in a locked state to prevent unauthorized duplication of the selected software program, and selectively disables the sampling, such as when the user completes the sampling or if the system detects that the user is attempting to copy the sampled application. A code is generated that identifies one or more particular software programs and contains information relating to sampling of the particular software programs by the user, such as which applications were sampled and how many times they were sampled.
Patent CA-2223879-A1 (CA)
Inventor: RASMUSSEN PETER MAX
IPC: B32B7/12
Filed: 1996-07-11
Abstract: A laminate is prepared that can be further treated comparatively soon after its preparation, the process comprising that a first solid film is applied with a fluid adhesive layer that cures influenced by a catalyst, whereupon a secondary solid or fluid film, consisting totally or partially of plastic material, is brought into contact herewith, whereby the secondary film contains a catalyst for the curing of the adhesive. The laminate prepared is suitable as packaging material, e.g. for food.
Patent CA-2226280-A1 (CA)
Title: Trailer for transporting tanks
Inventor: MACDONALD MURRAY
IPC: B60P1/16
Filed: 1998-01-07
Abstract: A trailer for moving large oblong objects, which objects are normally oriented so that the longer length is oriented vertically, notably as in oil storage tanks located at well sites. The trailer comprises a load bed which tips into a vertical position adjacent the object. When the load bed is in the vertical position, the rear end of the load bed contacts the ground and lift plates attached to the rear end of the load bed extend along the ground. The trailer is then backed up against the object and the lift plates slide under the object. One or more arms are activated to clamp the object against the bed, allowing it to be lowered with the bed to a horizontal position for transport.
Patent CA-2228321-A1 (CA)
Inventor: KATAGIRI HIROSHI
IPC: H03H7/01
Filed: 1998-02-25
Abstract: In accordance with the present invention, there is provided a multilayer microelectronic circuit which is adjustable in capacitance.  The circuit comprises a main capacitor dielectric layer, a main capacitor first electrode disposed on one of opposite sides of the main capacitor dielectric layer, a main capacitor second electrode disposed on the other of the opposite sides of the main capacitor dielectric layer in a way as to oppose the main capacitor first electrode through the main capacitor dielectric layer, a first trimming capacitor dielectric layer disposed on a side of the main capacitor first electrode opposite to the main capacitor dielectric layer,  a first trimming capacitor electrode disposed on a side of the first trimming capacitor dielectric layer opposite to the main capacitor first electrode in a way as to oppose the main capacitor first electrode through the first trimming capacitor dielectric layer, a second trimming capacitor dielectric layer disposed on a side of the first trimming capacitor electrode opposite to the first trimming capacitor dielectric layer, and a second trimming capacitor electrode disposed on a side of the second trimming capacitor dielectric layer opposite to the first trimming capacitor electrode in a way as to oppose the first trimming capacitor electrode through the second trimming capacitor dielectric layer.  The first trimming capacitor electrode is first trimmed for rough adjustment of a capacitance of the circuit. The second trimming capacitor electrode is then trimmed for fine adjustment of the capacitance.  The provision of two trimmable electrodes enable adjustment of the capacitance in a wider range and with an improved accuracy.
Patent CA-2228840-A1 (CA)
Title: Downhole apparatus
Inventor: FRENCH CLIVE JOHN
IPC: E21B23/00
Filed: 1996-08-05
Abstract: Apparatus for use in setting packers and other fluid actuated devices comprises a tubular body (222), a valve (228) for controlling the flow of well fluid through a port (234) in the body (222) and a valve actuator (224) mounted on the body (222) and movable relative thereto, to open the valve (228) by application of well fluid pressure. The well fluid may flow through the open valve (228) to set a packer or actuate a device.
Patent CA-2230044-A1 (CA)
Inventor: GRAHAM ROBERT
IPC: B22D11/10
Filed: 1998-02-19
Abstract: The invention relates to a method and apparatus for continuous casting of metal, comprising pouring the molten metal from a tundish into a mould through a tap hole in a base wall of the tundish, and wherein first and second tundishes and associated corresponding first and second nozzle means, are used to enable the flow of molten metal to be continuous or nearly continuous, such that when one of the first tundish is required to be changed it is moved into a changeover position, wherein both the first and second tundishes are in positionover the mould so that metal may flow from both tundishes simultaneously into the mould, with the nozzle means immersed in the molten metal in the mould.   The combined flow from the first and second tundishes is approximately equal to the required full flow from one tundish. The second tundish is moved with the first tundish, in the same direction such that a second tap hole is over themould so that molten metal flows from the second tundish into the mould. The flow from the first and second tundishes is regulated so that the combined flow rate does not exceed a prescribed rate.
Patent CA-2230136-A1 (CA)
Title: Presse d'injection a cylindre chargeur
Inventor: NORESSON NILS GUNNAR
IPC: B29C45/54
Filed: 1996-09-24
Abstract: L'invention porte sur un procédé de moulage par injection selon lequel le matériau plastique est plastifié par une vis sans fin puis injecté par un piston, le matériau plastifié alimentant le cylindre du piston d'injection (19) pendant la course de retour dudit piston. La vis (12) tourne constamment dans une position axiale fixe à l'intérieur du cylindre de plastification (10), le matériau plastique sous pression est stocké temporairement dans un espace sous pression (26) pendant la course de travail du piston d'injection, pour remplir le cylindre d'injection lors de la course de retour du piston en se joignant au matériau plastifié provenant directement de la vis de plastification (12). L'invention porte également sur une presse d'injection pour mettre en oeuvre ledit procédé, qui comporte un cylindre de plastification (10) avec une vis, un cylindre (18) contenant le piston d'injection relié à la sortie du cylindre de plastification par un clapet antiretour. Un cylindre chargeur (26) comportant un piston sous pression (27) est directement relié à la sortie du cylindre de plastification qui communique également par le clapet antiretour avec le cylindre contenant le piston d'injection.
Patent CA-2230463-A1 (CA)
Title: Core element connector for remote control assembly
Inventor: YANUSKO DAVID P
IPC: F16C1/18
Filed: 1998-02-26
Abstract: A motion transmitting remote control assembly (10) comprising a drive wheel (20) having a plurality of gear teeth (18) and rotatably supported by a drive wheel housing (12) and a driven wheel (16) having a plurality of gear teeth (18) and rotatably supported by a driven wheel housing (14) which is spaced from the drive wheel housing (12). A motion transmitting core element (30), comprising a flexible cable (31) having first and second ends (32 and 34) and a wire (36) wrapped helically about the cable (31) in spaced convolutions, is entrained about the wheels (16 and 20) and is in meshing engagement with the gear teeth (18) for transmitting rotational movement between the wheels (16 and 20). A connector interconnects the first and second ends (32 and 34) of the core element (30) for maintaining the core element (30) entrained about the wheels (16 and 20) regardless of the orientation of the core element (30) as the core element (30) passes through the housings (12 and 14). The connector is characterized by a first loop (64) attached to the first end (32) of the core element (30) and a second loop (34) attached to the second end (34) of the core element (30) and a single unitary link (68) extending through the loops (64 and 66), i.e., the loops (64 and 66) extend through holes (80) in the ends of the plate-like link (68).
Patent CA-2232923-A1 (CA)
Title: Superelastic guidewire with a shapeable tip
Inventor: BARBRE CAROL J
IPC: A61M25/01
Filed: 1998-03-24
Abstract: In accordance with the present invention there is provided a guidewire for navigating through the human vasculature. The guidewire has a distal end for insertion into the body, and a proximal end. The guidewire is made from a core wire formed from a superelastic material and has distal and proximal ends. The core wire has a bore adjacent its distal end, and the bore has a predetermined size and shape. The guidewire further includes a member formed from a malleable material. The member has the same size and shape as the bore and is inserted within the bore. Whereby, after the member is bent, the shape of the distal end of the core wire changes without elastically returning to its original shape. Lastly, the guidewire includes a cover which surrounds the member and portions of the core wire immediately adjacent thereto.
Patent CA-2233792-A1 (CA)
Title: Process to chloroketones using oxazolines
Inventor: RAYLE HEATHER LYNNETTE
IPC: C07D263/14
Filed: 1998-04-01
Abstract: This invention relates to a process for the preparation of an .alpha.-chloroketone compound comprising the steps of (i) cyclizing an alkynyl amide to form a 5-methyleneoxazoline (see.fig.I) (ii) chlorinating the 5-methyleneoxazoline using trichloroisocyanuric acid to produce a chlorinated oxazoline intermediate (see fig.II) and (iii) hydrolyzing the chlorinated oxazoline intermediate with an aqueous acid to produce the desired monochloroketone (see fig.III) wherein Z is alkyl or substituted alkyl, aryl or substituted aryl, heteroaryl or substituted heteroaryl or phenylene, R is a hydrogen atom or alkyl, and R1 and R2 are each independently an alkyl or substituted alkyl group, or R1 and R2 together with the carbon atom to which they are attached form a cyclic structure.  Additionally, when R is a hydrogen atom, a dichloroketone can be conveniently formed through adjustment of reaction conditions.
Patent CA-2235359-A1 (CA)
Inventor: VANSTONE SCOTT A
IPC: H04L9/32
Filed: 1998-04-20
Abstract: A method of generating a public key in a secure digital communication system, having at least one trusted entity CA and subscriber entities A, the method comprising the steps of: for each entity A, the CA selecting a unique identity I A distinguishing the entity A; generating a public key reconstruction public data .gamma. A of entity A by mathematically combining a generator of the trusted party CA with a private value of the entity A, such that the pair (I A, .gamma. A) serves as A's implicit certificate; combining the implicit certificate information (I A, .gamma. A) in accordance with a mathematical function F(.gamma. A ,I A) to derive an entity information f; generating a private key a of the entity A by signing the entity information f and transmitting the private key a to the entity A, whereby the entity A's public key may be reconstructed from the public information, the generator .gamma. A and the identity I A relatively efficiently. A further aspect of the invention provides for a public key certificate including a plurality of public keys, and wherein at least one of the public keys is an implicitly certified public key.
Patent CA-2237002-A1 (CA)
Title: Driver's license alert system
Inventor: FREITAG HAROLD WAYNE THOMAS
IPC: B60Q1/46
Filed: 1998-06-10
Abstract: The Drover's License Alert System (DLAS) is intended to alert police officers that an individual who is not in possession of a valid driver's license is operating a motor vehicle. A pre-requisite for the DLAS is the issue of driver's licenses with a magnetic strip encoded with information that can be used by the system to determine the validity of the license and the expiry date. The DLAS as installed in the motor vehicle comprises a card reader that can accept data from the magnetic strip on the license and a Central Processing Unit (CPU), with or without Programmable Read-Only Memory (PROM), interconnected with the vehicle's emergency/hazard lighting system. The emergency/hazard lighting system is activated by default by the vehicle's ignition system until such time as a driver's license is read into the DLAS, verified by the CPU and PROM, and then de-activated by a signal from the DLAS. The vehicle's emergency/hazard lighting system will thus alert the police to the possibility that a motor vehicle is being driven by someone who does not possess a valid driver's license. The DLAS will not interfere with the use of the emergency/hazard lighting system as a distress signal.
Patent CA-2237202-A1 (CA)
Inventor: GREEN VICTOR BRIAN
IPC: H04M1/72475
Filed: 1997-09-09
Abstract: A keypad adaptor (1) mounted on a conventional or preferably mobile telephone (2) by, e.g., a U-shaped bracket (7), comprises a keypad plate (6) over the telephone keypad (3) and includes buttons (8) above selected ones of the keys (4) of the telephone (2) so as to allow a user to call telephone numbers stored in a memory of the telephone (2). The buttons (8) are preferably larger and more spaced out than the keys (4), so as to facilitate their use by physically impaired persons.
Patent CA-2246003-A1 (CA)
Inventor: MALINGE JEAN
IPC: C08F4/645
Filed: 1998-10-01
Abstract: Ce support solide activateur des métallocènes en tant que catalyseurs dans la polymérisation des oléfines, caractérisé par le fait qu'il consiste en un ensemble de particules de support de composant catalytique solide, formées d'au moins un oxyde minéral poreux, lesdites particules ayant été modifiées pour porter, en surface, des sites acides de Lewis, aluminiques et/ou maqnésiens de formule : (voir fig. I); (voir fig. II) ou -Mg-F, les groupes (voir fig. III) provenant d' un agent de fonctionnalisation ayant réagi sur des radicaux -OH portés par les particules de base du support, la réaction de fonctionnalisation ayant été suivie par une réaction de fluoration. Le système catalytique selon l'invention comprend (a) un catalyseur métallocène, lequel a, le cas échéant, été soumis à une préalkylation. ; (b) un cocatalyseur ; et (c) un support solide activateur du métallocène tel que défini ci-dessus, le cocatalyseur (b) pouvant être absent si le catalyseur métallocène (a) a été préalablement alkylé, le support (c) pouvant avoir été imprégné par le catalyseur métallocène (a), lequel a, le cas échéant, été soumis à un traitement de préalkylation conduit soit avant, soit après la préimprégnation dudit support.
Patent CA-2246181-A1 (CA)
Inventor: WEST KENNETH J
IPC: C08L67/06
Filed: 1998-09-01
Abstract: Compression molded pigmented door skins fabricated by compression molding a pigmented, curable, unsaturated polyester sheet molding compound  containing a co-curable unsaturated monomer,  a  low profile  additive,  and a microvoid-reducing   thermoplastic   polymer,   exhibit uniform stainability while maintaining a  low linear thermal coefficient of expansion.  Such door skins are suitable  for preparing wood grain textured exterior insulated doors which exhibit minimal thermal deflection when   exposed   to   interior/exterior   temperature differentials,  even at eight foot door heights.   The doors may be stained without first applying a seal coat.