baber/WOPTO huggingface dataset:
Patent CA-2346411-A1 (CA)
Title: Ultra-wide bandwidth fiber based optical amplifier
Inventor: JIANG SHIJUN
IPC: H01S3/131
Filed: 1999-10-05
Abstract: An ultra-wide bandwidth optical amplifier (10) for the 1550nm optical band divides the 1520nm-1610nm bandwidth into three narrow bandwidths, i.e.  C1(1520nm-1541nm), C2(1541nm-1565nm) and L(1565nm-1610nm), and uses three separate erbium doped fiber amplifier blocks (12, 14, 16), configured in parallel relation and individually optimized to separately amplify the respective bandwidth. Multipath interference is controlled by constructing all three amplifier blocks with the same optical transmission length. The C1 and C2 band amplifier blocks (12, 14), which include shorter erbium doped fibers (44, 52) than the L band amplifier block (16), are physically lengthened using lengths of single mode fiber (70, 72) so that the optical transmission path of each amplifier block is generally equal. Amplifier blocks (12, 16) further include delay control devices (74, 76) which selectively delay signals passing through the respective amplifier block (12, 16) to provide fine adjustment to signal recombination.
Patent CA-2348386-A1 (CA)
Title: Projector system with light pipe optics
Inventor: GOURLEY HELEN
IPC: G02B6/032
Filed: 1998-10-30
Abstract: A projector system includes a lamp (10), a reflector collector optic (11), relay optics (18, 19) to image light from a light pipe (15) exit pupil to an  image gate of an image forming means (21), such as a film gate or an LCD panel. The light pipe is hollow and has cold mirror reflecting internal wall s, is tapered in shape, and has an entrance pupil which is larger than a center  section in cross section. The light pipe mixes the light by internal reflection and produces light which is uniform in color and intensity across  the exit pupil.
Patent CA-2348418-A1 (CA)
Inventor: BARDONESCHI GILBERT
IPC: A01N25/30
Filed: 1999-11-06
Abstract: The invention relates to a method for treating the feet or hooves of animals  used for breeding that are kept in sheds, especially cattle and particularly  dairy cattle. The method is characterised in that in a first phase, the feet  or hooves of the animals are cleaned with water or a detergent containing so ap or tensides, using an automatic spray system in order to remove all traces o f excrement, especially manure or other dirt, for example straw, and then in a  second phase, the previously cleaned feet or hooves are treated with a disinfectant by wetting or spraying.
Patent CA-2348882-A1 (CA)
Title: Pharmaceutical composition comprising a combination of dextro- and laevo- isomers of sotalol
Inventor: SANKARANARAYANAN ALANGUDI
IPC: A61P9/00
Filed: 1999-02-22
Abstract: The invention discloses a safer Antiarrhythmic drug with controlled Beta Adrenergic activity which comprises a combination of dextro- and laevo- rotatory isomers of sotalol as active ingredients in which the range of ratio of said dextro- and laevo- isomer is from 1.5:1 to 3.5:1, pharmaceutical compositions with said combination as active ingredients and its preparation and use of the said combination in the treatment of cardiac ailments in mammals including human being.
Patent CA-2349054-A1 (CA)
Inventor: SIMPSON MAHONEY DONALD
IPC: B66C1/04
Filed: 2001-05-29
Abstract: A transfer apparatus for articles is provided comprising: (a) a support; and (b) an ann, engaging or connecting to the support and movable between a first and second position vertically displaced relative to one another, the arm being rotatable about the support in a substantially vertical plane from a first side of the support to a second side of the support opposite the first side, the arm comprising; (i) a connector having a releasable attachment for engaging an article, wherein the connector is located distant from the support; and (ii) a rotation device to rotate the connector relative to the arm to re-orient the article attached to the connector from an attachment position on the first side of the support to a detachment position on the second side of the support.
Patent CA-2349510-A1 (CA)
Inventor: WING HON PATRICK FONG
IPC: A61J7/04
Filed: 2001-06-04
Abstract: A personal medication in storage dispensing unit is provided for receiving and storing medication, vitamins, minerals, phytochemicals, pills capsules, gel tablets and the like in a manner which is easily accessible and which is conducive to inclusion within a medication regimen system. A medication regimen monitor can be included in this system in order to be programmed too signal proper medication dosage times. The monitor preferably provides non-compliance information, preferably information which persists and which designates which portion of the medication regimen was not complied with. The system also can include a holder for multiple storing and dispensing units in an ordered fashion consistent with daily requirements of the medication regimen.
Patent CA-2350016-A1 (CA)
Title: Procedure for electro-stunning and/or electro-sacrifice, for industrial application to marine ichthyological species in floating cages
Inventor: GARCIA MARTINEZ MARCO ANTONIO
IPC: A22B3/06
Filed: 2001-06-08
Abstract: In the floating cage (12) with tuna fish (6) two divers are introduced, the hunter (1), who uses a rifle with a harpoon with a Teflon head and metallic tip (4), joined to equipment for transforming electric potential (3) on the boat (7) and also connected to a plate (5) submerged and the controller (2) that activates the equipment (3), which sends an electric stunning signal or a signal that kills the fish (6) to the two terminals of the plate (5) and tip (4). The fish is lifted from the water by the crane (10), and equipped with a collar or identifying plastic label (11). The rifle and the harpoon are recovered towards the boat (7).
Patent CA-2350219-A1 (CA)
Title: Remote control device with pressure-sensitive keys
Inventor: NAKAZAWA HIROYUKI
IPC: H01H13/785
Filed: 2000-09-08
Abstract: It is an object of the present invention to provide a remote control device which allows various operations and prevents complicated operations. A remot e control device for remotely controlling an AV (audio visual) device includes  an analog switch (30) formed of an operating element (31 or 41) and a pressu re- sensitive resistor (35) which outputs a signal with various levels depending  upon a pressing force applied to the operating element (31 or 41). By employing the analog switch (30) in a control button of the remote control device, it becomes possible to output a signal having various levels dependi ng upon a pressing force applied to the control button (31 or 41). This allows a single control button to be used for a plurality of functions. Thus, it is possible to reduce the number of buttons, and a user can easily operate the remote control device in a simpler fashion.
Patent CA-2352691-A1 (CA)
Title: Segmented waveguide for large diameter fiber optic rotary joint
Inventor: ROGERS ROBERT T
IPC: H04B10/22
Filed: 2001-07-09
Abstract: These and other objects of the present invention are achieved by a segmented waveguide for a fiber optic rotary joint. The segmented waveguide is mountable to the existing stator surface. The segmented waveguide is capable of receiving signals from the rotor. The fiber optic rotary joint includes a rotor and an existing stator surface. The rotor is rotatable through a full 360°  and is concentric to the existing stator surface. The rotor has one of a plurality of light transmitters and light receivers connected to a first circumference of the rotor.      The segmented waveguide includes a reflective waveguide surface shaped to match a portion of existing stator surface. At least one waveguide support supports the reflective waveguide surface and is connectable to the existing stator. At least one of a light transmitter or light transmitter is optically coupled to a reflective waveguide surface.
Patent CA-2353629-A1 (CA)
Inventor: MUTO KAZUTAKE
IPC: G01C19/56
Filed: 1999-07-22
Abstract: An orientation angle detector using gyroscopes (301-303) for detecting X-, Y - and Z-angular velocities which are time-integrated (60) to produce pitch, ro ll and yaw angles (.gamma., .beta., .alpha.) of the orientation. Two accelerometers (403, 404) are used to obtain tentative pitch and roll angles  in order to correct the pitch and roll angles, and two terrestrial magnetometers (401, 402) are used to obtain a tentative yaw angle so as to correct the yaw angle. When the tentative pitch, roll and yaw angles are defined accurate (50), the integrated pitch, roll and yaw angles are correct ed (60) by the tentative pitch, roll and yaw angles.
Patent CA-2354141-A1 (CA)
Title: Process and apparatus for processing and transporting flat glass workpieces
Inventor: ROSS EDWARD JOSEPH JR
IPC: C03B33/03
Filed: 1999-12-09
Abstract: A process for cutting glass sheets (10) includes the steps of: scoring each glass sheet on an automatic scoring table (12) having a scoring head (14) moveable on a bridge (16) and a track (18); transporting each scored glass sheet to a breaking table (22) via conveyor (20); floating each scored sheet on a fluid medium on the breaking table; and impacting each scored sheet from above the floated scored sheet to fracture the scored sheet along the score lines (40 and 44). An apparatus for cutting glass sheets includes mechanisms for performing the steps of this process. The fluid medium may be air with the impacting performed by a vacuum workholder (26) consisting of an arm (30) raised and lowered by pneumatic cylinders (32), the arm supporting a plurality of vacuum cups (28) engaging the workpiece (42) for subsequent transportation.
Patent CA-2355600-A1 (CA)
Title: Position sensor and circuit for optical encoder
Inventor: HEIM PASCAL
IPC: G01D5/34
Filed: 1999-11-17
Abstract: An electronic circuit for measuring the position of a spatially periodic intensity pattern of incident radiation includes an array of detectors (1); two or more correlator units (2,3) each having arrays of capacitors (12,13) connected to a buffer (14); and a phase angle computing unit (4). The pitch of the array of detectors (1) is smaller than the pitch of the incident intensity pattern so that the latter is oversampled, yielding high accuracy. The detector outputs (17) are weighted by respective fixed capacitance values (15, 16) which vary periodically along arrays of capacitors (12,13), and a weighted sum of outputs for each correlator unit (2,3) is output at its respective buffer (14). The capacitance values (15,16) of respective correlator units (2, 3) are mutually offset by a predetermined phase shift. The analog computation using capacitor arrays (12,13) is fast and energy efficient, and can be implemented as a VLSI circuit.
Patent CA-2356214-A1 (CA)
Title: Heterocyclic amides as inhibitors of factor xa
Inventor: KLIMKOWSKI VALENTINE JOSEPH
IPC: C07D409/04
Filed: 1999-12-15
Abstract: This application relates to a compound of formula (I) (or a pharmaceutically  acceptable salt thereof) wherein: Q1 is phenyl or 2-naphthalenyl either of which may bear one or more halo, trifluoromethyl, methoxy or methyl substituents; L1 is a direct bond, methylene, ethylene or ethen-1, 2-diyl; a nd Q2 is Q2A, Q2B, or Q2C in which Q2A (showing the CO to which it is attached)  is of formula (a) in which each of m and n independently is 0 or 1; Q2B is 1 - piperazinyl which bears at the 4-position the group R; Q2C is 3,4- didehydropiperidin-4-yl which bears at the 1-position the group R; pharmaceutical compositions thereof, and its use as an inhibitor of factor X a, as well as a process for its preparation and intermediates therefor.
Patent CA-2358347-A1 (CA)
Title: Lingual toothbrush
Inventor: HARADA STEPHEN D
IPC: A61C17/00
Filed: 1999-11-30
Abstract: A toothbrush that facilitates improved brushing of a lingual side of the teeth includes at least a head and as arrangement of bristles secured to a bristle-bearing surface of the head. In one embodiment, at least the bristle-bearing surface of the head is formed to approximate the geometric shape of the mouth on the lingual side of the teeth by, for example, including a convex curvature with respect to a brushing surface of the teeth. In another embodiment, bristles of varying lengths are secured to the bristle-bearing surface of the head to form an overall profile that approximates the general geometric shape of the mouth on the lingual side of the teeth. A curved or angled neck and an angled handle may also be included to improve maneuverability of the toothbrush in the mouth.
Patent CA-2360722-A1 (CA)
Inventor: NANDA SANJIV
IPC: H04L12/28
Filed: 2001-10-31
Abstract: Disclosed is an ARQ technique that efficiently utilizes channel resources while allowing for scheduling flexibility. The ARQ technique is an asynchronous parallel packet transmission technique which utilizes packet identifiers, sequence identifiers and user identifiers. The ARQ technique does not require a strict timing relationship to exist between parallel channels and physical layer frames because the identifiers would indicate to the user the user to whom a sub-packet is intended, the identity of the sub-packet and the sequence of the sub-packet.
Patent CA-2360973-A1 (CA)
Title: In-band signalling for synchronization in a voice communications network
Inventor: PRESTON DAN A
IPC: H04J3/06
Filed: 2000-01-18
Abstract: Methods for determining a system latency of an audio call path of a voice communications network, and for synchronizing a remote unit (108) with a reference oscillator of a reference station (102) involve transmitting a reference signal (106) over the audio call path from the reference station (102) to the remote unit (108), where a reply signal (112) is generated and transmitted back to the reference station (102) over the call path after a preselected reply delay interval (tdel). A round-trip time difference (tRT) is used to determine total system latency, which is then taken into account in synchronizing the remote unit (108) with the reference oscillator. The reference and reply signals (106, 112) are generated as audio-frequency signals resembling human voice sounds to avoid destructive attenuation by the voice communications network. One embodiment includes a wireless telephone unit having an on-board SPS receiver. The SPS receiver includes an oscillator that can be synchronized using the method to improve performance of the SPS  receiver. Convenient and efficient methods of synchronization and location data reporting within existing wireless communication network infrastructures are disclosed.
Patent CA-2362205-A1 (CA)
Inventor: WADE BRUCE E
IPC: C08F220/44
Filed: 2000-02-02
Abstract: The present invention relates to a modacrylic copolymer composition comprising acrylonitrile, vinylidene chloride, vinyl acetate, and at least one ionic comonomer. In one embodiment, the modacrylic copolymer composition comprises from about 45 to about 60% acrylonitrile, from about 35 to about 50%  vinylidene chloride, from about 0.5 to about 5% vinyl acetate, and up to about 2% of a salt of p-sulfophenyl methallyl ether by weight of the total composition. The copolymer composition of the present invention provides acceptable color while having acceptable flame resistance.
Patent CA-2365535-A1 (CA)
Title: Identification system
Inventor: ASHWIN TERRENCE KEITH
IPC: G06K7/00
Filed: 2000-03-01
Abstract: An electronic tag (10) is provided which includes processor means and transmitter circuitry (26). The processor means, which is typically a micro- controller (16), is programmed to provide a modulation control signal which includes unique identification data which at least identifies the tag (10) b ut may include further data. The transmitter circuitry (26) is connected to the  processor means and to an antenna (29) for transmission of the unique identification data. The transmitter circuitry (26) is powered by the modulation control signal. Preferably, the transmitter circuitry (26) is exclusively powered by the modulation control signal of the processor means.  The invention extends to a receiver (12) for receiving a transmission from t he tag (10) and to a system including a plurality of receivers (12) and tags (10). The invention also extends to a method of communicating data from an electronic tag (10) which includes driving transmitter circuitry (26) of the  tag with a modulation control signal which substantially powers the transmitter circuitry (26).
Patent CA-2371621-A1 (CA)
Title: Substituted indole sulfonamides as antiviral agents
Inventor: REEFSCHLAGER JURGEN
IPC: A61P31/12
Filed: 2000-04-18
Abstract: The invention relates to novel compounds that are suitable for use as medicaments, to methods for producing said compounds and to their use as medicaments, especially as antiviral agents.
Patent CA-2372274-A1 (CA)
Title: Reactive dye compounds
Inventor: HE WEI DONG
IPC: D06P3/24
Filed: 2000-05-10
Abstract: A reactive dye compound comprising: (a) at least one chromophore moiety; (b) at least one SO2C2H4 group which is attached to the chromophore moiety either directly via the sulphur atom of the SO2C2H4 group or a linking group L; characterised in that at least one SO2C2H4 group is substituted on its terminal carbon atom with at least one Y  group wherein Y is -A(CO)R* wherein A is selected from O  or S and wherein R' contains at least one terminal nucleophilic group, such as OH, NH2, SH, COOH, N, NHR1 and NR1R2 wherein R1 and R2 may be the same or different and may be selected from C1-C4 alkyl; and salts thereof. Also claimed is a process of manufacture of the compounds herein and products obtainable by the process. The compounds herein have high Exhaustion Values (E), high Fixation Values (F) and high Efficiency Values (T) and show significant improvements in terms of reducing spent dyestuff in effluent, increasing dye affinity to the substrate, increasing the dye-substrate covalent bonding, increasing the ability to dye substrates at room temperature, decreasing the amount of dye that is removed during the post dyeing "soaping off process" and therefore simplifying the post dyeing "soaping off process"  traditionally associated with dyeing cotton with fibre reactive dyes and reduction of staining of adjacent white fabrics. In addition, the compounds prepared above provide more intense dyeings and require less levels of salt for dyeing cotton substrates.
Patent CA-2374271-A1 (CA)
Inventor: KOO FRED
IPC: G06F17/30
Filed: 2002-03-01
Abstract: A query rewrite optimization method for eliminating a redundant join and equivalent subquery in an SQL query before generation and selection of the optimal quer y execution plan. The method evaluates a query for a particular join of a first and second quantifier each ranging over the same table. A determination is made whether the row set produced relative to  the second quantifier subsumes the row set produced relative to the first quantifier. The query ma y be reformed to eliminate the join and the second quantifier. A further determination of the  removability of the second quantifier may be required such as by evaluating a of a cardinality constraint when query output cardinality is material.
Patent CA-2377267-A1 (CA)
Title: Functional poly-.alpha.-aminoacid derivatives useful for the modification of biologically active materials and their application
Inventor: TONCHEVA VESKA
IPC: A61K47/48
Filed: 2000-06-19
Abstract: A linear poly-.alpha.-amino-acid derivative has at least glutamic or asparti c or serinic repeating units and additionally having a functional group at one  or both ends of the polymer backbone and/or only a single functional group a s a side group on the polymer backbone, the said functional end group and/or side group being other than alcohol. The said functional derivative is usefu l for the modification of biologically active materials.
Patent CA-2378437-A1 (CA)
Inventor: RITCHIE RACHEL JANE
IPC: C07K14/11
Filed: 2000-08-07
Abstract: The present invention provides the use of nucleic acid sequences and/or amino acid sequences in the preparation of a vaccine for the protection of fish against infectious salmon anaemia virus.  Specifically, such vaccines contain at least one nucleic acid sequence which is derived from ISAV or synthetically prepared analogues thereof, or substantially homologous sequences. These nucleic acid sequences are transcripted and translated into peptide sequences which are incorporated into a vaccination strategy to induce an immune response to the surface antigens of ISAV and therefore ISAV  itself. Therefore both the use of a vaccine against ISAV, and the incorporation of peptide sequences is herein described.
Patent CA-2378531-A1 (CA)
Title: Crystallizing machine
Inventor: ZHAO LIGUO
IPC: B29C49/64
Filed: 2000-06-28
Abstract: A machine (11) for crystallizing a thermoplastic preform or container is constructed from modular subassemblies and utilizes a preheated plug to provide the sole upright support for a workpiece (57) in the crystallizing process. The first modular subassembly includes the workpiece in-feed and pl ug preheat structures and incorporates the drive apparatus for the entire machine. The opposed end of the crystallizing machine (11) is constructed of  a subassembly which operates to provide the turnaround and tensioning takeup f or the carrier mechanism transporting the workpieces (11). Positioned between t he first subassembly and the opposed end subassembly are heating and cooling processing modules (11, 12) which can be provided in any number depending on  the size constraints and workpiece quality restraints desired. The processin g modules provide the heating and crystallizing processes for the desired area  of the workpiece (57) and the cooling process of the workpiece (57) prior to  unloading.
Patent CA-2379933-A1 (CA)
Title: Electron bombarded active pixel sensor camera incorporating gain control
Inventor: COSTELLO KENNETH A
IPC: H04N5/228
Filed: 2000-07-14
Abstract: A camera (10) includes a photocathode (30) operable in a night mode wherein electrons are generated in response to incident light, an active pixel sensor (36) including an array of pixels for sensing electrons in the night mode in response to a control signal, and a power supply control circuit for providing the control signal to the power supply (14) in response to a sensed incident light level. The control signal may be a gating signal having a duty cycle that increases as the sensed incident light level decreases. The camera (10) may be operable in a day mode wherein a fraction of the incident light is transmitted through the photocathode (30) and is sensed by the active pixel sensor (36). The camera (10) may further include an electron shielded light detector. A light detector signal generated by the electron shielded light detector may be used to control switching between the day mode and the night mode.
Patent CA-2380955-A1 (CA)
Title: Plants having modified response to ethylene
Inventor: CHANG CAREN
IPC: A01H5/00
Filed: 1994-06-30
Abstract: The invention includes transformed plants having at least one cell trans-formed with a modified ETR nucleic acid. Such plants have a phenotype char-acterized by a decrease in the response of at least one transformed plant cell to ethylene as compared to a plant not containing the transformed plant cell. Tis-sue and/or temporal specificity for expression of the modified ETR nucleic acid is controlled by selecting appropriate expression regulation sequences to target the location and/or time of expression of the transformed nucleic acid. The plants are made by transforming at least one plant cell with an appropriate modified ETR nucleic acid, regenerating plants from one or more of the transformed plant cells and selecting at least one plant having the desired phenotype.