baber/WOPTO huggingface dataset:
Patent CA-2261784-A1 (CA)
Title: Hypodermic needle
Inventor: GRAVLEE JOSEPH F JR
IPC: A61M5/32
Filed: 1997-07-22
Abstract: A hypodermic needle (20), according to the present invention, includes a hollow shaft having a substantially cylindrical inner surface (22), and a substantially cylindrical outer surface (24). The needle includes a beveled surface (26) extending between and connecting the inner surface and the outer surface of the needle tip. A cutting edge of the needle is formed between the beveled surface (26) and the internal surface (22) of the needle. The hypodermic needle avoids trauma, tearing, and other unnecessary tissue damage during penetration of tissue, and during threading of the probe through blood vessels, tunnel incisions or cavities. An alternative embodiment of the hypodermic needle has a cutting edge which includes a rounded (40) or blunted section at a trailing portion of the cutting edge.
Patent CA-2263083-A1 (CA)
Inventor: TRANTHAM EUGENE CLARK
IPC: G01V1/36
Filed: 1997-07-23
Abstract: A method for reconstructing (138) a selected wavefield at a designated common midpoint and offset location (132) from a set of prestack seismic data traces (126). The method uses actual data traces from other common midpoint and offset locations to reconstruct the selected wavefield at the designated reconstruction location. The method may be used to reconstruct any selected wavefield, including both primary reflection wavefields and secondary wavefields such as water-bottom multiple wavefields, and may be used with both 2-D and 3-D seismic data. If the reconstructed wavefield is a secondary wavefield, it may be subtracted from the restack seismic data traces to eliminate interference between wavefields. The method may also be used to reconstruct data from missing shots to avoid spatial aliasing problems in other data processing operations.
Patent CA-2265558-A1 (CA)
Title: Pharmaceutical compounds comprising polyamines substituted with electron-affinic groups
Inventor: HOFER KURT G
IPC: A61K31/415
Filed: 1997-09-29
Abstract: A compound or a salt thereof comprising a polyamine containing at least 2 electron-affinic groups is provided. In a preferred embodiment, the polyamine compound has structure (1), wherein, A is a spacer; R1, R2, R3, and R4 are independently hydrogen, hydrocarbon, heterosubstituted hydrocarbon, heteroaryl, heterosubstituted heteroaryl, or an electron-affinic group containing substituent; and the compound contains at least one tertiary amine functionality having three substituents each of which independently contain at least one electron-affinic group or hydrophilic group.
Patent CA-2267184-A1 (CA)
Title: Communication system using geographic position data
Inventor: CHIANG ALICE M
IPC: G01S19/48
Filed: 1997-10-10
Abstract: A wireless communication system employs directive antenna arrays and knowledge of position of users to form narrow antenna beams to and from desired users and away from undesired users to reduce co-channel interference. By reducing co-channel interference coming from different directions, spatial filtering with antenna arrays improves the call capacity of the system. A space division multiple access (SDMA) system allocates a narrow antenna beam pattern to each user in the system so that each user has its own communication channel free from co-channel interference. The position of the users is determined using geo-location techniques. Geo-location can be derived via triangulation between cellular base stations or via a global positioning system (GPS) receiver.
Patent CA-2268129-A1 (CA)
Title: 1,2,3-thiadiazole derivatives or salts thereof and agrohorticultural disease controller and method for using the same
Inventor: SHIMAOKA TAKASHI
IPC: A01N47/06
Filed: 1997-09-29
Abstract: 1,2,3-Thiadiazole derivatives of general formula (I) and salts thereof, disease controlling agents containing the derivatives or salts as the active ingredients, and a method for the use of the same, wherein R1 is H, C1-C4 (halo)alkyl, a 5- or 6-membered heterocyclic group containing 1 to 3 heteroatoms which may be the same or different from each other and are selected from among O, N and S, or the like; A is (a),(b),(c),(d) (wherein R2 and R3 are each H, halogeno, cyano, formyl, alkylthio alkoxycarbonyl, substituted or unsubstituted phenyl or the like, or alternatively R2 and R3 may be united to form a C2-C6 alkylene which is optionally interrupted by -O-, -S(O)n- (wherein n is 0 to 2), -CO- or -NR8- (wherein R8 is H, halogeno or the like), thus forming a 3- to 7-membered ring); B is cyano, an optionally substituted 5- or 6-membered heteroxyclic group containing 1 to 3 heteroatoms selected from among O, N and S, or the like; and m is 0 to 4.
Patent CA-2268729-A1 (CA)
Title: Densification de substrats poreux disposes en piles annulaires par infiltration chimique en phase vapeur a gradient de temperature
Inventor: GOUJARD STEPHANE
IPC: C23C16/46
Filed: 1997-10-17
Abstract: Les substrats (10) à densifier sont disposés en au moins une pile (20) annulaire qui délimite un passage intérieur (26) avec des espaces ménagés entre des substrats. Les substrats sont chauffés de façon non uniforme par établissement d'un gradient de température au sein de chaque substrat, par exemple par couplage inductif direct, de sorte que des parties des substrats éloignées de leurs surfaces exposées à la phase gazeuse admise aient une température supérieure à celle des surfaces exposées. Une phase gazeuse contenant au moins un précurseur du matériau à déposer est canalisée dans la chambre de réaction (30) vers l'un des deux volumes constitués par l'intérieur et l'extérieur de la pile de substrats, à son extrémité la plus proche d'une première extrémité longitudinale de la chambre, le volume (26) dans lequel la phase gazeuse est canalisée étant fermé à son extrémité la plus éloignée de la première extrémité longitudinale de la chambre.
Patent CA-2268853-A1 (CA)
Title: Rate matching and channel interleaving for a communications system
Inventor: GOSNE STEPHANE
IPC: H03M13/27
Filed: 1999-04-13
Abstract: A method of and apparatus for matching a rate of data bits, in a matrix of data bits interleaved by a predetermined interleaving process, to a desired rate by deletion of redundant data bits or repetition of data bits derived from the matrix, includes steps of determining in a non-interleaved matrix of the data bits a pattern of bits to be deleted or repeated to provide the desired data rate, decoding an address of each bit in said pattern in a manner inverse to the interleaving process to produce a respective address of the bit in the matrix of interleaved data bits, and deleting or repeating the respective bit in the interleaved data bits in dependence upon the respective address. The address decoding is performed in the same manner as a coding of addresses for producing the interleaved data bits from the non-interleaving matrix of the data bits. The specification also discloses an advantageous interleaving process for channel interleaving in a 3rd generation CDMA wireless communications system, a shuffling method for a second stage of interleaving in such a system, and how the raft matching can be conveniently applied to turbo-coded data coded.
Patent CA-2268855-A1 (CA)
Title: Recycled roofing material and method of manufacturing the same
Inventor: ZICKELL THOMAS J
IPC: E04D5/02
Filed: 1999-04-13
Abstract: A recycled asphalt roofing material for use on sloped roofs, which provides the required elevated melt point without using prior art methods of oxidizing the asphalt prior to incorporation into the roofing material is provided. The recycled asphalt roofing material is made up of approximately 30% flux asphalt and approximately 70% reclaimed asphalt roofing material. The fibrous backing in the reclaimed material modifies the asphalt in such a way as to provide the required elevated melt point. The manufacturing process for recycled fiberglass mat-based roll and shingle roofing, in its preferred embodiment, consists of impregnating a roofing material backbone, such as a fiberglass or polyester mat with recycled asphalt material to form inner and outer layers of recycled material and then applying optional second inner aid outer layers of standard asphalt coating to the inner and outer layers of the recycled material. The second coating encapsulates and seals the recycled material and thus ensures that the recycled roofing material will have the same longevity as prior art asphalt roofing materials.
Patent CA-2268857-A1 (CA)
Title: Method and apparatus for determining the rate of received data in a variable rate communication system
Inventor: CHEN TAO
IPC: H04L29/08
Filed: 1997-10-09
Abstract: Apparatus and method employed in a communications system which has a transmitter (2) and a receiver (4), where the receiver determines at which of several rates individual frames in a signal have been transmitted by the transmitter. For example, if the transmitter (2) employs four transmission rates, the receiver (2) decodes each frame of the received signal based on the four rates to produce four cyclic redundancy check (CRC) bits, four symbol error rate (SER) values and one or more Yamamoto check values. If only two of the CRC bits check, then the receiver (2) compares to each other the SER values for those two rates to determine at which of the two rates a current frame was transmitted. If only one of the CRC bits check for a given rate, then the SER value for that rate is compared with a maximum SER threshold for that rate. Additionally, SER values for the other rates can be compared to minimum SER thresholds. Furthermore, the Yamamoto check values can be analyzed to determine whether looser or tighter minimum and maximum SER thresholds should be employed if the Yamamoto values check for the current rate, or do not check, respectively.
Patent CA-2268868-A1 (CA)
Title: Bisacodyl dosage form with multiple enteric polymer coatings for colonic delivery
Inventor: NAKAJIMA AKIO
IPC: A61K9/32
Filed: 1997-10-10
Abstract: The present invention relates to a pharmaceutical composition in a unit dosage form for peroral administration in a human or lower animal, having a gastrointestinal tract comprising a small intestine and a colon with a lumen therethrough having an inlet to the colon from the small intestine, comprising: a) a safe and effective amount of rapidly dissolving bisacodyl incorporated into a compressed, bi-convex tablet, with a maximum diameter of about 4 mm to about 10 mm; b) a non-pH  dependent smoothing coat applied to the tablet to provide a smooth tablet surface free from edges and sharp curves; and c) an enteric polymer coating material comprising at least one inner coating layer and only one outer coating layer; wherein the rapidly dissolving bisacodyl is released at a point near the inlet to, or within the colon; each of the inner coating layer(s) is an enteric polymer that begins to dissolve in an aqueous media at a pH between about 5 to about 6.3; and the outer coating layer is an enteric polymer that begins to dissolve in an aqueous media at a pH between about 6.8 to about 7.2.
Patent CA-2271428-A1 (CA)
Title: Thermo-transfer ribbon
Inventor: KRAUTER HEINRICH
IPC: B41M5/40
Filed: 1999-05-07
Abstract: Description of a thermo-transfer ribbon with a customary carrier having a wax-bonded layer of a thermo-transfer color on one side of the carrier and with a wax-bonded separation layer located between carrier and the wax-bonded layer. The thermo-transfer ribbon distinguishes itself in that the wax-bonded layer B) of the thermo-transfer color contains a wax-soluble polymer and the wax-bonded separation layer A) contains less than approximately 20% by weight of a polymer wax plasticizer and has a glass temperature Tg of -30 to +70°C. The benefits of said thermo-transfer ribbon are based in that the print quality as well as the scratch and solvent resistance are excellent.
Patent CA-2271970-A1 (CA)
Title: Dispositif magnetisable
Inventor: TYLER MALVIN NICOLAS
IPC: H01F1/00
Filed: 1997-11-17
Abstract: On décrit un support d'enregistrement magnétique qui comporte en surface une couche magnétisable elle-même constituée d'une pluralité de particules ferrimagnétiques ou ferromagnétiques dont la dimension individuelle la plus importante ne dépasse pas 100 nm, chacune de ces particules représentant un domaine ferromagnétique séparé.
Patent CA-2274502-A1 (CA)
Title: Genetically transformed plants demonstrating resistance to porphyrinogen biosynthesis-inhibiting herbicides
Inventor: CASPAR TIMOTHY
IPC: C12N9/02
Filed: 1998-01-29
Abstract: A bacterial gene (hemG) encoding a PROTOX enzyme, resistant to PBI herbicide compounds has been cloned and used to transform plants and seeds. Plant tissue transformed with hemG demonstrates a resistance to PBI herbicides and plants grown from transformed seeds possess the PBI herbicide-resistant phenotype.
Patent CA-2274860-A1 (CA)
Title: Hair coloring compositions
Inventor: DIAS LOUIS CARLOS
IPC: A61K8/36
Filed: 1997-12-09
Abstract: A storage stable, re-usable hair coloring composition comprising: (a) an oxidising agent; and (b) an oxidative hair coloring agent; wherein the pH of each of (a) and (b) is in the range of from about 1 to about 6 and wherein the combined mixture of (a) and (b) has a pH in the range of from about 1 to about 5 and wherein both (a) and (b) are capable of being stored at low pH, either separately, or, once mixed, for at least 1 month at room temperature and wherein the resultant color delivered to the hair (Delta E) is up to about 75 %, preferably up to about 85 %, more preferably up to about 90 % and most preferably up to about 95 % of the total color delivered to the hair (Delta E) from a mixture of (a) and (b) on mixing. The products are storage stable and re-usable and can provide excellent hair coloring and in-use efficacy benefits in combination with improved color retention potential after storage at room temperature.
Patent CA-2276954-A1 (CA)
Inventor: IYER PRAKASH
IPC: H04M7/12
Filed: 1999-06-30
Abstract: In a teleconference, audio communications between attendees which may be located at different locations are processed by a mixer. Audio signals, representative of sound effects including utterances by the attendees, are transmitted to the mixer respectively. The mixer derives samples from the respective received signals. During each sample interval, the mixer selects the sample having the highest energy to become a mixed sample output for each user, except the user contributing the highest energy sample. For such a user, the mixer selects the sample having the next highest energy to become the mixed sample output. The mixed sample outputs are transmitted back to the users respectively, thereby realizing the audio communications in the teleconference.
Patent CA-2284533-A1 (CA)
Title: Intrabody measurement
Inventor: BEN-HAIM SHLOMO
IPC: A61B/
Filed: 1998-01-22
Abstract: A method of measuring the size of an area (22) within a body, including bringing at least one position sensor (28) to each of a plurality of points in the area, determining position coordinates of the plurality of points, using the sensor (28) and calculating distances between the plurality of points.
Patent CA-2288469-A1 (CA)
Title: Production process, used in particular for obtaining lecithin from dehydrated egg
Inventor: BORK MICHAEL
IPC: C07F9/10
Filed: 1999-11-04
Abstract: Using a process for obtaining useful products from raw materials containing protein and fat, and in particular for obtaining lecithin from dehydrated egg, a solution should be created with which useful products can be extracted in several stages, special emphasis being placed on the production of lecithin.      This is achieved in that the feedstock, comprising lipids, phospholipids (lecithin) and proteins, is subjected to a supercritical extraction process using a solvent for extracting lipids and flavours, the lipids and flavours being extracted from the supercritical solvent by pressure reduction.
Patent CA-2289024-A1 (CA)
Title: Accurate profile and timing information for multitasking systems
Inventor: AUSTIN JAMES
IPC: G06F11/36
Filed: 1998-05-14
Abstract: Determining execution time for a portion of software includes obtaining a first time stamp value (436) at a beginning of the portion and obtaining a second time stamp value (437) at an end of the portion. At least one of the first and second time stamp values is ajusted to compensate for any amount of time that the portion is swapped out in a multitasking operating system. The first time stamp value is subtracted from the second time stamp value (439) to determine execution time. Determining execution time may also include providing a deltaout value that is initialized to zero prior to the portion being run for a first time. The deltatout value is incremented by an amount of time the portion is swapped out. The first time stamp value is compensated by subtracting the deltatout value therefrom and the second time stamp value is compensated by subtracting the deltaout value therefrom.
Patent CA-2289121-A1 (CA)
Inventor: PINTO SUSAN
IPC: C08B37/00
Filed: 1998-05-07
Abstract: Beta-glucan having improved properties is provided. This .beta.-glucan preparation possesses a significantly higher molecular weight and viscosity than .beta.-glucans prepared by standard means. These properties enable the .beta.-glucan to be better resistant to enzymatic degradation, to exhibit a longer residence time in the gastrointestinal tract, and to extend the shelf life of food products to which it is added.
Patent CA-2290073-A1 (CA)
Title: Galvannealed steel sheet and manufacturing method
Inventor: KATO CHIAKI
IPC: C23C2/28
Filed: 1999-11-16
Abstract: Galvannealed steel sheet and method, made by applying hot-dip galvanizing to a steel sheet, heating at a heating rate of at least about 10°C/second to a maximum sheet temperature within a range of from about 470 to 550°C, and applying an alloying treatment; the Al content X Al% in the hot-dip galvannealing layer and the coating weight W g/m2 satisfy the following equation (1); thereby producing a Zn-Fe galvannealing layer having an iron content of from about 7 to 12%; the galvannealed steel sheet has intensities of ~-phase, .delta.-phase and .GAMMA.-phase that satisfy the following equations (4) and (5) as observed through X-ray diffraction with the galvannealing layer peeled off the galvannealed steel sheet at the galvannealing/steel sheet interface, and the galvannealed steel sheet having excellent press workability, having a whiteness and a glossiness within prescribed ranges: ~ W x (X Al - 0.12) ~ 15 ............... (1) I(~: 1.26)/I(.delta.1: 2.13) ~ 0.02 ........... (4) I(.GAMMA.: 2.59)/I(.delta.1: 2.13) ~ 0.1 ........... (5).
Patent CA-2292993-A1 (CA)
Title: Method for operating fuel cells on impure fuels
Inventor: LAURITZEN MICHAEL V
IPC: H01M8/04
Filed: 1999-12-21
Abstract: The electrocatalysts in certain fuel cell systems can be poisoned by impurities in the fuel stream directed to the fuel cell anodes. Introducing a variable concentration of oxygen into the impure fuel stream supplied to the fuel cells can reduce or prevent poisoning without excessive use of oxygen. The variation may be controlled based on the voltage of a carbon monoxide sensitive sensor cell incorporated in the system. Further, the variation in oxygen concentration may be periodic or pulsed. A variable air bleed method is particularly suitable for use in solid polymer fuel cell systems operating on fuel streams containing carbon monoxide.
Patent CA-2293111-A1 (CA)
Title: Writing instrument with locking core
Inventor: GRAY TERRY A
IPC: B43K19/16
Filed: 1999-12-23
Abstract: A writing instrument and a process for manufacturing thereof, includes a core having a configuration with a plurality of channels spaced apart in a radial direction.  The channels have sides which form a specific minimum angle at the centerline of each channel. The writing instrument also includes a pair of slats, each having a configuration corresponding to approximately half of the configuration of the core.
Patent CA-2293524-A1 (CA)
Inventor: VOELLER NICOLE
IPC: C11D1/835
Filed: 1998-05-29
Abstract: The invention relates to a detergent concentrate containing glycol ether and cationic surfactants. It is characterized in that it contains less than 0.1 wt. % fatty alcohol polyglycol ether and/or amphoteric surfactants, and that it contains a) glycol ether of general formula R-O-(CH2-CH(CH3)-O)n-H, in which R is an alkyl radical with 1-4 C-atoms or a phenyl radical, and n is a number between 1 and 5, and b) cationic surfactants. The weight ratio of a) to b) is between 8:1 and 100:1.
Patent CA-2295353-A1 (CA)
Inventor: KATAGIRI YOSHITADA
IPC: H01S3/067
Filed: 2000-01-12
Abstract: The present invention provides a light generation method and a light source that are preferable in obtaining a single-mode light having high outputs, a small wavelength spectral bandwidth, and a low intensity noise. A white output from a white-light source and having wavelength components over a wide-band in a wavelength spectrum passes through an isolator and is then filtered by a disc-shaped optical filter. A transmitted light is input to a semiconductor optical amplifier having its polarization plane regulated by a polarization controller. An output from the amplifier passes through an isolator and is then filtered by a disc-shaped optical filter again to generate a single-mode light having a small spectral bandwidth and high outputs. Polarization control by the polarization controller corresponds to control of the polarization plane of a semiconductor laser in the semiconductor optical amplifier so as to obtain a maximum gain from the amplifier. This configuration enables a single-mode light having a small spectral bandwidth and high outputs to be easily generated at an arbitrary wavelength.
Patent CA-2296128-A1 (CA)
Title: A process for the production of diazonium compounds with a low content of sodium ions
Inventor: MURPHREE SAMUEL SHAUN
IPC: C09D11/00
Filed: 2000-01-14
Abstract: The present invention relates to a process for desalting aqueous suspensions containing an organic diazonium compound and electrolytes containing Na ions, in which the aqueous suspension is passed through a semipermeable membrane.
Patent CA-2297284-A1 (CA)
Inventor: FRANCES JEAN-MARC
IPC: C08G59/68
Filed: 1998-07-22
Abstract: Le domaine de l'invention est celui de la catalyse des réactions de polymérisation et/ou de réticulation par voie cationique de monomères, oligomères et/ou polymères. De nouveaux systèmes amorceurs de polymérisation et/ou de réticulation comprenant au moins un borate d'onium et au moins une benzophénone ont été mis au point pour satisfaire aux exigences de productivité et de fabrication de plus en plus élevées; ces amorceurs sont notamment utilisés pour la préparation de résines et/ou de matériaux composites à base d'une matrice de nature organique et/ou de nature silicone et éventuellement de monomères, oligomères, polymères de nature acrylique.