baber/WOPTO huggingface dataset:
Patent CA-2337280-A1 (CA)
Inventor: NADAKA VLADIMIR
IPC: C07C281/18
Filed: 2001-02-15
Abstract: The present invention provides a process for preparing a compound of the general formula (I): (see formula I) wherein R1 to R5 are independently selected from hydrogen, halogen, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl or C1-6 alkoxy, all optionally substituted by one or more of halogen, hydroxy and aryl groups, as well as being independently selected from amino, mono- or disubstituted amino, alkenyloxy, acyl, acyloxy, cyano, nitro, aryl and alkylthio groups, which process comprises reacting a compound of the general formula (II):      wherein R1 to R5 are as defined in formula (I), with aminoguanidine bicarbonate in a mixture of a water-soluble solvent and polyphosphoric acid.
Patent CA-2340364-A1 (CA)
Inventor: KANG INYUP
IPC: H03M13/39
Filed: 1999-08-13
Abstract: The present invention is a novel and improved technique for decoding with particular application to turbo, or iterative, coding techniques. In accordance with one embodiment of the invention a system for decoding includ es a channel deinterleaver RAM for storing a block of symbol estimates and for reading out at least three different portions of said block in substantially  simultaneous fashion. A set of 3 state metric calculators receives the three  portions in a substantially simultaneous fashion and generate corresponding sets of state metric calculations from said three portions of the channel deinterleaver block.
Patent CA-2340552-A1 (CA)
Title: Improved method and apparatus for reducing oversized wood chips
Inventor: ARASMITH STANLEY DALE
IPC: B27L11/00
Filed: 2001-03-13
Abstract: An apparatus is provided for cutting oversized wood chips smoothly and uniformly, such that the resulting chips are of optimum size and shape for use in making paper, cardboard, and other recyclable materials. A method is provided for aligning and guiding oversized wood chips through an array of spaced-apart saw blades using a reciprocating plunger controlled to continuously align and sweep the wood chips completely through the saw blades. The method and apparatus can be adapted to produce a variety of desired wood chip sizes.
Patent CA-2342851-A1 (CA)
Inventor: SLAGEL EDWIN C
IPC: C08G18/66
Filed: 1998-10-07
Abstract: The present invention is an optically clear, high hardness, impact resistant polyurethane which provides exceptionally high heat distortion temperatures and excellent chemical resistance. The invention is particularly useful for transparency applications that require excellent impact resistance coupled with high heat distortion temperatures, such as architectural glazings, vehicles glazings, riot shields, aircraft canopies, face masks, visors, opthalmic and sun lenses, protective eyewear, and transparent armor.
Patent CA-2343689-A1 (CA)
Title: Process for preparing a polymeric foam using a perfluorochemical compound dissolved or dispersed in a hydrofluoroether
Inventor: DAMS RUDOLF J
IPC: C08J9/14
Filed: 2001-04-11
Abstract: The invention provides a method of making a polymeric foam comprising the step of vaporizing a blowing agent composition comprising perfluorochemical compound dissolved or dispersed in hydrofluoroether in the presence of at least one foamable polymer and a precursor composition thereof, said hydrofluoroether and perfluorochemical compounds being liquids at atmospheric pressure and about 20 °C. Also provided are blowing agent compositions and foamable compositions useful in such process.
Patent CA-2343760-A1 (CA)
Title: Orally administered controlled drug delivery system providing temporal and spatial control
Inventor: STANIFORTH JOHN N
IPC: A61K9/52
Filed: 1999-01-19
Abstract: A pharmaceutical composition in the form of tablets or capsules provides a combination of temporal and spatial control of drug delivery to a patient for effective therapeutic results. The pharmaceutical composition comprises a drug, a gas generating component, a swelling agent, a viscolyzing agent, and optionally a gel forming polymer. The swelling agent belongs to a class of compounds known as superdisintegrants (e.g., cross-linked polyvinylpyrrolidone or sodium carboxymethylcellulose). The viscolyzing agent initially and the gel forming polymer thereafter form a hydrated gel matrix which entraps the gas, causing the tablet or capsule to float so that it is retained in the stomach or upper part of the small intestine (spatial control). At the same time, the hydrated gel matrix creates a tortuous diffusion path for the drug, resulting in sustained release of the drug (temporal control). A preferred once daily ciprofloxacin formulation comprises 69.9 % ciprofloxacin base, 0.34 % sodium alginate, 1.03 % xanthan gum, 13.7 % sodium bicarbonate, 12.1 % cross-linked polyvinylpyrrolidone, and optionally other pharmaceutical excipients, the formulation being in the form of a coated or uncoated tablet or capsule.
Patent CA-2343849-A1 (CA)
Inventor: STAMBACK MARK ALLEN
IPC: F01L3/08
Filed: 2001-04-11
Abstract: An integral valve stem seal retainer and spring seat for a valve seal subassembly is disclosed having lower, intermediate and upper portions. An annular sealing member is bonded to the intermediate and upper portions of the metal retainer and an annular flange extends radially outwardly of the lower portion of the retainer to engage at least one coil of a valve spring. The annular sealing member further includes upper and lower portions, wherein the upper portion engages an outer surface of a valve stem while the lower portion engages a top of a thin-walled valve guide.
Patent CA-2345181-A1 (CA)
Title: Bi-directional optical transmission using dual channel bands
Inventor: THOMPSON WILLIAM A
IPC: H04B10/291
Filed: 2001-04-25
Abstract: A bi-directional optical transmission system according to the present invention provides transport of x optical channels over n nodes. The system supports two-way transport of the x channels over a single fiber connecting each of the nodes in sequence. The system is advantageous in that only two optical transmission bands are utilized in order to achieve minimal loss in the separation of bands. The two directions of optical transmission on the fiber between the end nodes have a spectral (wavelength/frequency) separation, in addition to directional separation. The use of only two bands permits the utilization of low-loss wide band thin film optical filters to combine and separate the signals at each node. Further processing of the signals takes place in unidirectional components, e.g., multiplexers, demultiplexers and amplifiers; as required. An alternating arrangement of the optical filters in the two separate bands is chosen to maximize the optical performance of the overall system and significantly reduce insertion losses. In one exemplary embodiment of the present invention, at each intermediate node in the system a transmission filter for the first band of optical signals is used between the output of an optical amplifier for the first band and the bi-directional fibers. A  reflection port of this filter is used to carry oppositely directed signals of the second band from the bi-directional fiber to an optical amplifier for the second band. An optical transmission filter for the second optical band is also used at each intermediate node between the output of an optical amplifier for the second band and the bi-directional fiber. The reflection port of the second hand filter is used to carry the input signal of the first band from the bi-directional fibers to the optical amplifier for the first band.  End nodes in the system include only an appropriate one of the transmission filters. The alternate arrangement of filters simultaneously provides for optimal signal performance for both directions of transmission at every node in the system whine at the same time minimizing insertion losses from filtering components.
Patent CA-2347214-A1 (CA)
Title: Protein design automation for protein libraries
Inventor: DAHIYAT BASSIL I
IPC: C12N15/00
Filed: 1999-10-15
Abstract: The invention relates to the use of protein design automation (PDA) to generate computationally prescreened secondary libraries of proteins, and to  methods and compositions utilizing the libraries.
Patent CA-2347424-A1 (CA)
Title: Use of dextran covalently bound to charged groups for selective targeting of tumor by local, intratumoral or intracavitary administration
Inventor: HOLMBERG ANDERS
IPC: A61K51/00
Filed: 1999-10-12
Abstract: A compound for local, i.e. intratumoral or intracavitary administration, for targeting tumors comprising dextran, the charge of which has been modified through covalent binding of charged groups, such as charged amino acids. The compound further comprises a functional group for treating or imaging the tumor.
Patent CA-2349308-A1 (CA)
Inventor: BRUNNER JOHN J
IPC: A23K10/28
Filed: 1999-11-12
Abstract: Compositions and methods for enhancing the palatability of dry and semi-dry pet food compositions, particularly extruded cat food compositions, are described. In one embodiment, the palatability enhancer is a dry cat food coating including tetrasodium pyrophosphate at about 0.1 % to about 1.0 % by weight of the finished pet food product. The palatability enhancer is applied after the extrusion process to the extruded particles or pieces of pet food.
Patent CA-2354564-A1 (CA)
Title: A modular radiant floor heating or cooling system
Inventor: FIEDRICH JOACHIM
IPC: F24D3/16
Filed: 2000-06-28
Abstract: (57) Abstract: In a hydronic radiant heating and/or cooling system modular panels each of a metal plate or sheet on a board or boards providing a slot into which tubing is inserted and held against the plate in intimate thermal contact therewith, so that the plate is heated/cooled by conduction of heat between the water in the tubing and the plate, the improvement in which two or more of said panels are hinged together, side by side to provide a hinged set of panels so that two or more of sets of hinged panels unfolded at their hinges and arranged end to end on a floor, wall or ceiling provide elongated spaces into which said tubing is inserted and held against said radiation plate a finished floor, wall or ceiling covering can be installed thereon and said system operated to heat or cool said room, the improvement wherein the panels of a set are arranged in a regular staggered relationship so that such sets unfolded and arranged end to end abutting each other interlock.
Patent CA-2356880-A1 (CA)
Inventor: SANDERS JOHAN PIETER MARINUS
IPC: D01B1/42
Filed: 1999-12-24
Abstract: The invention relates to the separation and recovery of components from genetically modified plants. The invention provides a method for separating components from a genetically modified plant, characterized in that the material is at the least partly fiberized and subsequently is separated into a fiber fraction and a juice stream, such that the fiber fraction principally comprises relatively firm tissues such as epidermis, sclerenchyma and vascular bundles, and the juice stream principally contains soft tissues such as parenchyma and cytosol.
Patent CA-2357596-A1 (CA)
Inventor: HOOGEN NICOLA
IPC: C08G69/18
Filed: 2001-09-21
Abstract: New process of anionic polymerization of lactams comprises adding (to solution of molten lactam) catalyst capable of forming lactamate and regulator selected from amides of specific formula followed by cooling stage, optional reheating and mixing with sufficient temperature to cause polymerization to lactam. The process of anionic polymerization of lactams comprises: (1) adding (to the solution of molten lactam) i) catalyst capable of forming lactamate and ii) regulator selected from amides of formula R1-NH-CO-R2 (I); and (a) cooling solution from stage (a) optionally to the solid state and divisible form; (b) optional reheating of (a) to temperature lower than lactam polymerization temperature; (c) optional reheating of product of stage (a) and maintaining temperature at the level between the melting point of lactam and 15 degrees C above; and (2) introduction of product of stage (a), (b) or (c) into mixer device followed by heating to sufficient temperature to for bulk polymerization of lactam. R1 = radical optionally substituted with R3-CO-NH- or R3O-; R1, R2, R3 = aryl, alkyl or cycloalkyl radical. An Independent claim is also included for the lactam in solid form which can be divided, containing: (i) catalyst capable of forming lactamate and (ii) regulator selected from amides of formula (I).
Patent CA-2360454-A1 (CA)
Inventor: SUER EDWIN E
IPC: B26D3/08
Filed: 2001-10-29
Abstract: A food slicer 10 of the present invention contains a hollow body 12 having an inner wall 13 defining an interior 17 and an outer wall 15 for containment of a food product therein. A plurality of blades 32 extends across the interior 17 of the body thereby cutting a food product biased against the blades 32.
Patent CA-2362915-A1 (CA)
Title: Method of fabricating new dental prosthetics using a patient's existing dental prosthetics
Inventor: DIASTI ADAM
IPC: A61C13/007
Filed: 2000-02-23
Abstract: In summary, the invention is directed to a method of making a new dental prosthesis (210) from an existing dental prosthesis (10), including the steps of making a sacrificial positive (130) or pattern of the existing dental prosthesis, and using the sacrificial pattern (130) of the existing dental prosthesis to form a new dental prosthesis (210). The inventive method likewise includes making a sacrificial pattern of at least a part of an existing denture. The invention further includes the construction of new dentures from a patient's worn dentures, by providing copy or modified copy of the worn dentures into which one can set and arrange the denture teeth. The invention still further includes a dental prosthetic, such as a denture, made by such methods.
Patent CA-2363527-A1 (CA)
Title: Motor vehicle communication protocol with automatic device address assignment
Inventor: REED CHAD
IPC: H04L29/08
Filed: 2001-11-20
Abstract: Devices on a communication bus enter a Ring Mode during which a master device assigns addresses to slave devices on the bus. In the Ring Mode, each slave device repeatedly attempts to send a first message informing the master device of the existence of that particular slave device. This mode includes a procedure for resolving collisions messages on the communication bus. After addresses have been assigned to all of the slave devices, a Master/Slave Mode commences. In this latter mode, each slave device sends messages over the communication bus only in response to a request from the master device.
Patent CA-2365041-A1 (CA)
Inventor: IP WING KEI
IPC: A63F13/30
Filed: 2001-12-12
Abstract: A system and method for real time data exchange which includes a game server having a multi-threaded, multi-processing operating system is and located at an ISP head end. The game server is equipped with a back end communication system for full duplex communications over the Internet. The system employs a plurality of personal computers each having means for connecting to the internet and logging onto the game server together with a plurality of handheld game playing device each having a data communications link to one of the personal computers. Each of the personal computers has a first component of game software operating thereon. The game server has a second component of game software operating thereon and a game database operating thereon. The second component of game software includes first, second, third and fourth process threads, the fust process thread is operable for receiving uplink communication packets to register and login into the game database on the game server from each of the handhold game playing device through the data communications link and the Internet. The second process thread is operable for sending downlink communication packets to specific game software on any one of the personal computers. The third process thread is operable for receiving uplink communication packets from specific game software on each of the personal computers. A fourth process thread is operable for sending downlink communication packets to any one of the handhold game playing devices that include data from the game database.
Patent CA-2365958-A1 (CA)
Title: Aperiodic longitudinal gratings and optimisation method
Inventor: PARKER MICHAEL CHARLES
IPC: G02F1/365
Filed: 2000-03-03
Abstract: The invention relates to the field of grating structures. The invention provides a longitudinal grating having an aperiodic structure, wherein the grating has a selected response characteristic and any repeated unit cell in  the structure is significantly longer than a characteristic length associate d with the selected response characteristic.
Patent CA-2366723-A1 (CA)
Title: Fatty acid-anticancer conjugates and uses thereof
Inventor: BRADLEY MATTHEWS O
IPC: A61K31/337
Filed: 2000-03-09
Abstract: The invention provides conjugates of fatty acids and anticancer agents useful in treating cancer, and compositions and formulations thereof. Methods for using the conjugates are also provided.
Patent CA-2372165-A1 (CA)
Inventor: MACRAE DOUGLAS B
IPC: H04N5/445
Filed: 2000-03-15
Abstract: A system and method for displaying detailed information about a currently displayed program along with a related advertisement in a miniguide overlaid on a small portion of a current television program. A viewer invokes a miniguide command using a viewer input device, such as a remote control, while watching a current television program in full screen format. In response to the miniguide command, the television system displays a portion of the television schedule information associated with the television program in an information area, and an advertisement on a panel ad window located horizontally adjacent to the information area. The advertisement, displayed on a panel ad window is based on the television program being watched or customized based on viewer profile information. The viewer may interact with the advertisement by highlighting the advertisement and activating a function with respect to the highlighted advertisement. Such functions include, for instance, displaying information and/or a video clip about a product advertised on the panel ad window.
Patent CA-2376445-A1 (CA)
Inventor: FRASER JAMES M III
IPC: E21B23/04
Filed: 2002-03-12
Abstract: An apparatus and method for delivering a liner wiper plug into a well bore on a workstring with a liner pipe, releasing the wiper plug from the workstring, and giving a positive indication of release of the wiper plug. A sleeve captures a collet to a latch ring until a plug is pumped down the workstring to cause a pressure buildup, which shears a shear screw, allowing the sleeve to shift, releasing the latch ring and the wiper plug from the workstring. A rupture disk is provided in the event of jamming of the apparatus, to allow pressurization above the wiper plug, shearing a weak link in the latch ring to release the wiper plug.
Patent CA-2380387-A1 (CA)
Title: Polyamines comprising urea groups, method for their production, and their use as hardeners for epoxide resins
Inventor: TILLACK JORG
IPC: C08G18/12
Filed: 2000-07-17
Abstract: The present invention provides polyamines which contain urea groups, a process for the preparation thereof and their use to produce adhesives, sealants, embedding compounds, moulded items or coatings.
Patent CA-2382640-A1 (CA)
Inventor: SWAN MARTIN
IPC: G01L17/00
Filed: 2000-08-09
Abstract: L'invention concerne un indicateur de pression et un procédé associé. L'indicateur de pression comprend un diaphragme de diffusion éventuellement transparent, et un diaphragme témoin relié et en communication fluidique avec le diaphragme de diffusion. En service, la pression est appliquée aux diaphragmes qui peuvent être amplifiés ; la modification de la pression appliquée entraîne un mouvement relatif entre les diaphragmes qui est visible soit sur la surface extérieure du diaphragme de diffusion soit à travers lui. Les diaphragmes peuvent former un compartiment contenant, de préférence, un liquide ou un gel. Le diaphragme témoin peut présenter une configuration ou une forme identifiable pouvant être colorée et pouvant comprendre un symbole ou un symbole graphique saillant sur sa surface. La configuration ou la forme peut comprendre au moins deux éléments, chacun correspondant à une pression distincte. L'invention concerne également un dispositif gonflable, en particulier un ballon de football ou un pneumatique, comprenant un tel indicateur de pression.
Patent CA-2384973-A1 (CA)
Inventor: JIAO SHUPING
IPC: C12N15/82
Filed: 2000-09-22
Abstract: L'invention concerne une composition et un procédé permettant de réguler l'expression de séquences nucléotidiques hétérologues dans une plante. La composition est une nouvelle séquence d'acides nucléiques pour promoteur à expression favorisée dans la semence. L'invention concerne également un procédé qui consiste à exprimer une séquence nucléotidique hétérologue dans une plante en utilisant cette séquence de promoteur. On transforme une cellule de plante pour qu'elle contienne une séquence nucléotidique hétérologue reliée opérationnelle au promoteur à expression favorisée dans la semence, et on régénère une plante transformée de façon stable à partir de la cellule de plante transformée.
Patent CA-2385812-A1 (CA)
Inventor: JENSEN LARS BAEKGAARD
IPC: H04R25/00
Filed: 2000-06-23
Abstract: Change over of the sound receiving characteristic of a hearing aid having spaced apart first and second microphone means (Fmic, Bmic) between the omnidirectional characteristic and a directional characteristic is effected by controlled attenuation and time or phase delay of signals derived from the signals (X front, X back) from the first and second microphone means before forming and overall combined signal (Y) to be supplied to the hearing aid signal processor, whereby the overall combined signal (Y) is determined by Y = X front *(1 - omni * e-j.omega.T) + X back * (omni -e-j.omega.T), where omni is an adjustable attenuation control parameter preferably in the range 0 <= omni <= 1 and T is a time delay corresponding to the acoustical delay between the first and second microphone means. In result, the change between the omnidirectional characteristic and any desired form of the directional characteristic is effected as a smooth change-over substantially without affecting phase relationship, time delay and amplitude characteristic of the hearing aid.
Patent CA-2391633-A1 (CA)
Title: Procede et appareil de communication a spectre etale a vitesse variable
Inventor: CUDAK MARK C
IPC: H04J13/00
Filed: 2000-10-26
Abstract: L'invention concerne un système (100) permettant de sélectionner un premier schéma de modulation-codage (111), de déterminer un premier nombre possible de bits d'information (201), de déterminer un premier nombre de données (102) à transmettre depuis l'utilisateur expéditeur au premier utilisateur destinataire et de déterminer un premier niveau de chargement. Si ce dernier n'est pas égal à un nombre entier, il faut l'arrondir au premier numéro entier suivant, puis il faut sélectionner un premier nombre d'une pluralité de codes d'extension (108-1 à 108-k) en fonction du premier nombre entier du niveau de chargement associé au codage d'extension du premier nombre de bits d'information (102) après modulation et codage selon le schéma de modulation-codage sélectionné (111).