baber/WOPTO huggingface dataset:
Patent CA-2241872-A1 (CA)
Title: Method and apparatus for detecting target species having quadrupolar nuclei by stochastic nuclear quadrupole resonance
Inventor: LIAO MING Y
IPC: G01R33/20
Filed: 1996-12-30
Abstract: One aspect of the present invention is a method for detecting a class of target species containing quadrupolar nuclei in a specimen by nuclear quadrupole resonance, comprising: (a) generating a random or pseudo-random train of rf pulses; (b) irradiating the speciment with the train of rf pulses;  (c) detecting an NQR signal in response to irradiating the specimen; (d) cross-correlating the NQR signal with the random or pseudo-random train of rf pulses, thereby generating a free induction decay signal; and (e) converting the free induction decay signal into a frequency domain signal. Another aspect of the present invention is an apparatus for carrying out the method of the invention.
Patent CA-2245009-A1 (CA)
Title: Open-celled rigid foams based on isocyanate
Inventor: WIEGMANN WERNER
IPC: C08J9/02
Filed: 1998-09-23
Abstract: In a process for producing open-celled rigid foams by reacting a)  polyisocyanates with b)   compounds containing hydrogen atoms which are reactive toward isocyanates, in the presence of c)  water, d)   if desired, organic compounds acting as physical blowing agents, e)  catalysts, auxiliaries and/or additives, the compounds containing reactive hydrogen atoms used are substances having the structure I:              where   m is 0 - 15 n is 0 - 1 o is 0 - 15 p is 0 - 1 q is 0 - 15 r is 0 - 1 s is 0 - 15 t is 0 - 1 u is 0 - 10 v is 0 - 15 x is 1 - 5 y is 1 - 4 or mixtures of 1 - 3 where r + n ~ 0 z is 0 - 3 z i is 0.1 -3 R1  is an aliphatic structure without OH groups based on the structure of polyhydric alcohols, preferably ethylene glycol, diethylene glycol, triethylene glycol, 1,2-propylene glycol and dipropylene glycol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, 1,3-butanediol, trimethylolpropane, trimethylolethane, glycerol, pentaerythritol, where these substances can also be used in the esterification as any mixture among one another and R1 can therefore also be a mixture of the corresponding structures, R2  is the radical of a polycarboxylic acid without COOH groups, eg. adipic acid, terephthalic acid, o-phthalic acid, R3   is an alcohol radical like R1.
Patent CA-2247176-A1 (CA)
Title: Laminar flow jet engine bay
Inventor: CANADAS MARC
IPC: B64D29/00
Filed: 1997-12-24
Abstract: The bay (12) of a turbofan engine (10) comprises a front structural element (30), whose external surface is continuous and extends over at least 50% of the geometrical chord of the bay. Said element (30) is installed on maintaining and guiding members (44), such as slides, which prevent a significant deformation in flight and allow a sliding to the front of the element (30) for maintenance purposes. A laminar air flow around the front half of the bay (12) is consequently ensured.
Patent CA-2247552-A1 (CA)
Title: Methods and apparatus for detecting core/cladding interfaces in optical waveguide blanks
Inventor: HEPBURN JERALD LEE
IPC: G01M11/00
Filed: 1998-09-15
Abstract: Methods and apparatus for detecting air/cladding and core/cladding interfaces of blanks (13) used to produce optical waveguide fibers are provided. A beam of coherent light (30) is scanning across the blank (13) and spatial light intensity patterns produced thereby (Figure 5) are detected and analyzed. Air/cladding interfaces correspond to a decrease in the width of a unimodal spatial light intensity pattern as the beam moves towards the center of the blank (Figures 5A and 5B). Core/cladding interfaces correspond to the onset of an at least bimodal spatial light intensity pattern as the beam moves towards the center of the blank (Figures 5D and 5E). By rotating the blank and repeating the measurement process at two or more angular positions, concentricity and ellipticity values for a blank can be determined.
Patent CA-2248391-A1 (CA)
Inventor: GEARHART KENT A
IPC: B67B3/20
Filed: 1998-09-25
Abstract: A flexible tube and pump dispenser for lotions and the like including a flexible plastic tube having a first end and a second end. The tube includes an integral rigid finish at one end which has a radially inwardly extending transverse wall. The transverse wall has an opening therethrough. A pump dispenser having a plunger and an axial body extends through the opening in the transverse wall of the finish. The axial body of the pump dispenser has a flange engaging the transverse wall of the finish. The flange on the body is held in position engaging the wall on the finish.
Patent CA-2251059-A1 (CA)
Title: Glass cleaner with adjustable rheology
Inventor: SVOBODA GEORGE J
IPC: C11D3/20
Filed: 1997-03-31
Abstract: An aqueous glass cleaning composition with optimal vertical cling and ease of use properties contains at least one compound selected from the group consisting of nonionic surfactants, linear alcohols, an organic ether having the formula: R1-O-R2 wherein R1 is a C1-C8 linear, branched or cyclic alkyl or alkenyl optionally substituted with -OH, and R2 is a C1-C6 linear, branched or cyclic alkyl or alkenyl substituted with -OH; a synthetic polymeric agent having a high thickening efficiency; and an anti-streaking alcohol.
Patent CA-2251693-A1 (CA)
Title: Supercritical hydrogenation
Inventor: SWAN THOMAS M
IPC: C07B43/04
Filed: 1997-04-11
Abstract: A process for the selective hydrogenation of aliphatic or aromatic substrates under supercritical or near critical conditions. Hydrogenation is effected using a heterogeneous catalyst in a continuous flow reactor containing a supercritical or near critical reaction medium and selectively product formation is achieved by varying one or more of the temperature, pressure, catalyst and flow rate.
Patent CA-2251729-A1 (CA)
Inventor: ROSEN YOSSI
IPC: G03G5/10
Filed: 1997-04-17
Abstract: L'invention a trait à une technique de pré-conditionnement de photorécepteur organique consistant: a) à préparer un photorécepteur organique sur lequel se trouve un groupe d'une substance organique; et b) à appliquer un agent de dissolution de cette substance organique soluble sur la surface du photorécepteur.
Patent CA-2252706-A1 (CA)
Inventor: WELLER DWIGHT D
IPC: A61K47/48
Filed: 1997-04-30
Abstract: Polymeric compositions effective for delivering compounds in living organisms are described. The compositions include polypeptides which exhibit solubility in both hydrophilic and lipophilic environments by undergoing a reversible pHdependent transition from a low-pH, lipophilic form to a high-pH, hydrophilic form.
Patent CA-2254331-A1 (CA)
Inventor: ST-JACQUES JEAN L
IPC: E04D13/08
Filed: 1998-12-07
Abstract: A separation unit/facility 2, for an eavestrough 6 at the eaves of a roof 9 on a building 7 comprising a free flow unit 1 connected to an elbow 8 in the eavestrough 6, so that the system will extend vertically down along an exterior wall of the building 7 and carry rainwater away from the roof 9. A facility 2 within the system is for separating any dirt and debris 10 that falls into the rainwater in the eavestrough 6, so that the rainwater will flow without obstruction out through the facility 2 and out the downpipe 3 into the drain tile 5.
Patent CA-2255857-A1 (CA)
Inventor: NISHINO HIROHITO
IPC: G01N31/00
Filed: 1997-12-11
Abstract: A mobile phase into which a sample has been injected is passed through a separation column (5) to separate an S-nitroso compound. An aqueous nonalkaline solution of a mercury, silver, or copper salt, etc. is added to the separated S-nitroso compound with a reactant feed pump (7) to liberate HNO2 from the compound inside a reaction channel (6). The Griess reagent is added to the HNO2 contained in the reaction mixture during or after the liberation process with a reactant feed pump (9) to generate a diazo compound.  The concentration of the generated diazo compound is determined by absorptiometry with a detector (10). Alternatively, a fluorescent reagent comprising diaminonaphthalene or an analogue thereof is added to the S-nitroso compound together with a mercury, silver, or copper salt, etc. with the pump (7) to generate a fluorescent azo compound, to which a fluorescence developer is added with the pump (9). The resultant mixture is analyzed by fluorometry with the detector. Thus, the S-nitroso compound is determined.
Patent CA-2255905-A1 (CA)
Title: Automated and independently accessible inventory information exchange system
Inventor: PURCELL DANIEL S
IPC: G06Q10/00
Filed: 1997-05-23
Abstract: A method for controlling the collection, processing and dissemination of information by a host regarding product and service availability. The method includes the steps of establishing a host operated information management system on a computer. Host approved sellers of products and services are granted limited electronic access to the information management system so that the seller can access that seller's inventory information on the system for adding, amending and deleting portions of the seller's inventory information.  The seller's inventory information is analyzed and assimilated into a buyer's listing of products and services available to potential buyers. Host approved buyers of products and services are granted limited electronic access to the system so that each approved buyer can access the buyer's listing for reviewing products and services of interest to that buyer. An approved buyer can electronically designate a product or service of interest for purchase from the buyer's listing.
Patent CA-2258706-A1 (CA)
Inventor: PAUL CHRIS
IPC: A63B69/00
Filed: 1999-01-14
Abstract: The present invention is an apparatus for weighting a sports implement, including a hockey stick and a golf club.      The apparatus comprises a flexible body sheet for wrapping transversely around a portion of the implement; a friction pad attached to one end of the body sheet for providing friction contact between the apparatus and the implement; a plurality of transversely aligned pockets disposed along a longitudinal portion of the body sheet; a plurality of transverse fold lines defined by the spaces between the pockets, wherein the number of fold lines and the distance between successive fold lines are selected so that an undersurface of the body sheet can generally conform to the periphery of the selected portion of the implement; a plurality of weights housed within the pockets; and fastening means attached to portions of the body sheet for fastening the body sheet around the selected portion of the implement.
Patent CA-2260621-A1 (CA)
Title: Image input apparatus, image input system, image sending/receiving system, image input method and storage medium
Inventor: FUJIWARA HIDEYUKI
IPC: H04L12/64
Filed: 1999-02-03
Abstract: Provided is an image input apparatus in which changeover between sensing and transfer of low-resolution images such as moving images and high-resolution images such as still images can be performed smoothly during image sensing and data transfer operations. The apparatus includes an image signal generating circuit for sensing the image of a subject and generating an image signal indicative thereof; a data transfer circuit for transferring the image signal generated by the image signal generating circuit to an external device via a prescribed communications interface, the data transfer means having a first transfer mode in which there can be assured a fixed transfer rate but with no guarantee of data, and a second transfer mode in which data is guaranteed but transfer rate is not; and a control circuit for controlling the data transfer circuit so as to perform image transfer in the first transfer mode in a case where the image signal generating circuit generates a low-resolution image signal and in the second transfer mode in a case where the image signal generating circuit generates a high-resolution image signal.
Patent CA-2262445-A1 (CA)
Title: Composition and method for coating metals by dip autopolymerization
Inventor: BELL JAMES P
IPC: B05D7/24
Filed: 1997-08-04
Abstract: A composition and method are described for providing conformal protective or decorative polymer coatings on metals such as aluminum, copper, iron, steel, zinc, and this by dip autopolymerization. In accordance with the present invention, an acidic solution of organic monomer undergoes autopolymerization upon contact with a metal substrate, thereby forming a polymeric coating on the substrate. The method comprises providing the acidic monomer solution, dipping the metal substrate to be coated for a prescribed period of time depending on the thickness of the coating desired, and then removing the substrate from the solution. Importantly, the polymerization requires no application of external driving force, such as thermal or electrical energy.  The coatings thus formed are up to 50 microns thick, and conform to the shape of the substrate. These coatings further have uniform thickness, and excellent thermal stability and protective properties. In one preferred embodiment of the present invention, the composition comprises an acidic solution of an organic electron acceptor monomer that undergoes autopolymerization in contact with a metal substrate, thereby forming a polymeric coating on the substrate.  In another preferred embodiment of the present invention, the composition comprises an acidic solution of an organic electron acceptor monomer and an organic electron donor monomer that undergo autopolymerization in contact with a metal substrate, thereby forming a polymeric coating on the substrate. Metal-polymer composites are also described.
Patent CA-2264661-A1 (CA)
Title: Filter element
Inventor: FLEISCHHACKER GERHARD
IPC: E01C11/22
Filed: 1997-09-02
Abstract: A filter element (1) for liquid permeable floor area fastening (17), a floor covering plate (15), a manhole cover (15), a sewage cavity or the like, with at least one pre-filtering layer (3) in the direction of the through-flow (2) and at least one following filter layer (4,4'), wherein the free through-flow sections (a, b, b') of each layer (3, 4, 4') increase from layer to layer in the direction of the through-flow. The filter also comprises a housing (5) which surrounds the filter layers (4,4') in a framelike manner and maintains them, wherein each filter layer (4,4') is formed from granular material and the grains are available in loose form or linked to each other by a weak binding agent.
Patent CA-2268187-A1 (CA)
Title: Pharmaceutical carrier device suitable for delivery of pharmaceutical compounds to mucosal surfaces
Inventor: TAPOLSKY GILLES H
IPC: A61K9/22
Filed: 1997-10-16
Abstract: The present invention relates to a pharmaceutical delivery device for application of a pharmaceutical to mucosal surfaces. The device comprises an adhesive layer and a non-adhesive backing layer, and the pharmaceutical may be provided in either or both layers. Upon application, the device adheres to the mucosal surface, providing localized drug delivery and protection to the treatment site. The kinetics of erodability are easily adjusted by varying the number of layers and/or the components.
Patent CA-2269224-A1 (CA)
Title: Method and apparatus for decoding variable rate data
Inventor: LIN YU-CHUAN
IPC: G10L19/00
Filed: 1997-10-27
Abstract: A system and method for determining the data rate of a frame of data at a receiver (50) of a variable rate communications system. A vocoder at a transmitter encodes a frame of data at one of the rates of a predetermined set of rates. The data rate is dependent on the speech activity during the time frame of the data. The data frame is also formatted with overhead bits, including bits for error detection and detection. At the receiver (50), the data rate for the frame is determined based on hypothesis testing. Because the data rate is based on speech activity, a hypothesis test may be designed based on the statistics of speech activity. The received data frame is first decoded by a decoder (34) into information bits at the most probable rate as provided by the hypothesis testing module (36). Data check element (42) generates error metrics for the decoded information bits. If the error metrics indicate that the information bits are of good quality, then the information bits are presented to a vocoder (44) at the receiver to be processed for interface with the user. If the error metrics indicate that the information bits have not been properly decoded, then decoder (34) decodes the received data frame at the other rates of the set of rates until the actual data rate is determined.
Patent CA-2270171-A1 (CA)
Inventor: HILTON DOUGLAS J
IPC: A61P9/12
Filed: 1997-10-31
Abstract: The present invention relates generally to therapeutic and diagnostic agents. More particularly, the present invention provides therapeutic molecules capable of modulating signal transduction such as but not limited to cytokinemediated signal transduction. The molecules of the present invention are useful, therefore, in modulating cellular responsiveness to cytokines as well as other mediators of signal transduction such as endogenous or exogenous molecules, antigens, microbes and microbial products, viruses or components thereof, ions, hormones and parasites.
Patent CA-2270400-A1 (CA)
Title: Mutant penicillin g acylases
Inventor: NOVOTNY JIRI
IPC: C12N15/55
Filed: 1997-10-31
Abstract: New mutant penicillin G acylases preferably from E. coli are provided, exhibiting altered enzymatic activity. These penicillin G  acylases are obtained by expression of a gene encoding said penicillin G  acylase having an amino acid sequence which differs at least in one amino acid from the wild-type penicillin G acylase.
Patent CA-2273059-A1 (CA)
Inventor: YAMAMOTO KIMIKO
IPC: C12N15/00
Filed: 1999-06-17
Abstract: A method of dwarfing plants comprises controlling the expression of the genes involved in the dwarfism of the plants is provided. A molecule to be utilized for dwarfing plants is also provided. A single gene that causes the d1 mutation, which results in the dwarf abnormality of rice, was identified and isolated from a vast chromosomal region by the map-based cloning technique. This method enables, for example, creating ornamental plants and agricultural products with new commercial values, and therefore is useful especially in the areas of agriculture and horticulture.
Patent CA-2276505-A1 (CA)
Title: Chambering of low-energy training ammunition in automatic firearms
Inventor: DIONNE SYLVAIN
IPC: F41A33/00
Filed: 1999-06-25
Abstract: A barrel positioning spring moves a barrel in a blow-back operating pistol rearwardly when the slide recoils in order to position the chamber on the barrel to receive a further cartridge with the return of the slide. This spring in a Colt(TM) .45 caliber pistol may be seated on the recoil spring guide rod present beneath the barrel. A removable loading ramp extension is fitted to the frame in the space between the chamber end and the next cartridge to receive such cartridge as it is being chambered by the returning slide.
Patent CA-2276850-A1 (CA)
Inventor: DE GOUY JEAN-LUC
IPC: H03M7/36
Filed: 1999-06-29
Abstract: La présente invention concerne un synthétiseur numérique de fréquence. Le synthétiseur comporte des moyens (1) de génération des échantillons d'un signal numérique à convertir en signal analogique codé sur N bits en fonction d'un mot de commande de fréquence, des moyens (2) de génération d'un signal de bruit codé sur N bits, et un convertisseur numérique-analogique (3), le signal utile et le signal de bruit étant tronqués à M bits avant d'avoir été additionnés par un additionneur (4). Le résultat de l'addition est converti en signal analogique par le convertisseur numérique-analogique (3). Le bruit généré présente au moins une densité de bruit sensiblement égale à la loi équiprobable (110), cette densité étant nulle en dehors d'un espace donné. Application: notamment pour la synthèse numérique directe, par exemple dans le domaine des techniques radar ou dans le domaine de l'instrumentation.
Patent CA-2280516-A1 (CA)
Title: Molecular weight controlled polymers by photopolymerization
Inventor: BERGE CHARLES THOMAS
IPC: C08F2/46
Filed: 1998-02-18
Abstract: Synthesis of linear acrylic polymers and copolymers having controlled molecular weight by the photoinitiated free radical polymerization of vinyl monomers in the presence of chain transfer agents to produce polymers useful in coating compositions and the like, including printing inks.
Patent CA-2282137-A1 (CA)
Inventor: TAN SOR HOA
IPC: B05B13/02
Filed: 1999-09-14
Abstract: An expandable paint wagon has a translating base structure and a plurality of support members slidably mounted on the translating base structure. The support members are slidable between a contracted position and an expanded position. A  linkage connects the support members to each other and to the base structure. A first and a second biased locking pins are mounted on separate support members. The first pin engages the base structure when the support members are in the contracted position and the second pin engages the base structure when the support members are in the expanded condition.
Patent CA-2282970-A1 (CA)
Title: Tensioner
Inventor: AYUKAWA KAZUMASA
IPC: F16H7/08
Filed: 1999-09-22
Abstract: The tensioner comprises a cup fixed to an engine block and a pivot shaft which is fixed to a bolt engagement portion of the cup. The pivot shaft is inserted into a pivot bearing, and an arm is pivotally attached to the pivot shaft. The arm is biased by a torsion coil spring to rotate in a direction tensioning the belt. A sleeve is attached to an outer surface of the bolt engagement portion. One end of a coil spring is wound around the pivot bearing, and the other end is wound around the sleeve. The coil spring and the sleeve minutely deform by the rotation of the arm to generate a damping force. A damping force acting upon the arm when tensioning the belt is smaller than the damping force acting upon the arm when the belt is loosened.
Patent CA-2287275-A1 (CA)
Title: Optical devices and methods of fabrication thereof
Inventor: CHARLTON MARTIN DAVID BRIAN
IPC: G02B6/34
Filed: 1998-05-18
Abstract: An optical device includes a waveguide bounded by a region containing a photonic band gap the properties of which determined the transfer characteristic of the waveguide. Such a device may serve as a component of, for example a wavelength division multiplexer, a monochromatic laser or a chemical sensor. It may serve as an optical bus for an electronic component such as a microprocessor. These devices are particularly suitable for incorporation in optical and optoelectronic integrated circuits as they permit the fabrication of waveguides having right-angle bends with a radius of the order of 2 µm.
Patent CA-2287618-A1 (CA)
Inventor: DIGATE JOHN T
IPC: E04G23/02
Filed: 1999-10-28
Abstract: Provided is a wallboard repair clip which includes a patch wallboard receiving structure for contacting inner and outer surfaces of a patch wallboard, an existing wallboard receiving member and a locking structure. The locking structure and existing wallboard receiving structure are constructed such that inner and outer surfaces of the existing wallboard are contacted once the patch wallboard is in a repaired position within the existing wallboard.