baber/WOPTO huggingface dataset:
Patent CA-2184266-A1 (CA)
Title: Method for igniting and operating a high-pressure discharge lamp and a circuit for performing the method
Inventor: HOLTSLAG ANTONIUS HENDRICUS MA
IPC: H05B41/282
Filed: 1995-12-08
Abstract: A high frequency HID ballast includes an inverter for operating the HID lamp at high frequency and an arc instability controller which detects and adjusts the operating frequency of the inverter to avoid acoustic resonance of the discharge arc.  The ballast ensures that the power delivered to the lamp remains substantially constant despite variations in the gain of the inverter which occur with changes in the operating frequency.  Power control is accomplished by sensing lamp power and controlling a boost converter to vary the bus voltage feeding the inverter.  The boost converter is also controlled during lamp ignition, when the load provided by the HID lamp is low, to clamp the bus voltage at a predetermined level.  The ballast employs universal techniques suitable for operating HID lamps of different types, wattages and manufacturers despite the occurrence of acoustic resonance/arc instabilities among these lamps over a fairly broad frequency range.
Patent CA-2184396-A1 (CA)
Inventor: SANO SHIGEKI
IPC: F16D1/08
Filed: 1996-08-28
Abstract: A tilling shaft for a power tiller includes:  an insertion portion formed on a distal end side of the tilling shaft projecting from a power transmission case of the power tiller, the insertion portion having a substantially circular cross section; a polygonal shaft portion formed on a proximal end of the tilling shaft adjacent the insertion portion; and a tapered portion formed between the polygonal shaft portion and the insertion portion such that a diameter of the tapered portion is gradually increased from a distal end side toward a proximal end of the tapered portion.  The diameter of the insertion portion may be identical to the diameter of an imaginary circle inscribed within the polygonal shaft portion.  Alternatively, the diameter of the insertion portion may be slightly larger than the diameter of the imaginary circle, and a plurality of ribbon-shaped supporting surfaces are formed on the insertion portion in such a manner as to be flush with respective side surfaces of the polygonal shaft portion.
Patent CA-2184778-A1 (CA)
Inventor: CHINO SHINJI
IPC: C08L25/04
Filed: 1996-09-04
Abstract: Disclosed is a syndiotactic, polystyrenic resin composition comprising (A) 100 parts by weight of a component composed of (a) from 10 to 98 % by weight of a styrene-based polymer having a syndiotactic configuration and (b) from 2 to 90 % by weight of a polyolefin, (B) from 0.5 to 50 parts by weight of a styrene-olefin copolymer having a styrene content of from 40 to 85 % by weight, and optionally (C) from 0.5 to 10.0 parts by weight, relative to 100 parts by weight of the component (a) of (A), of a polyphenylene ether (having an intrinsic viscosity in chloroform at 25°C of 0.4 dl/g or higher) and/or (D) from 0 to 200 parts by weight, relative to 100 parts by weight of the component (b) of (A), of a styrene-olefin copolymer having a styrene content of from 5 to 35 % by weight and/or (E) from 0 to 200 parts by weight, relative to 100 parts by weight of the component (b) of (A), of at least one selected from paraffinic oils, paraffinic waxes, mineral oils and siloxanic oils.  The composition may optionally contain (F) from 0.5 to 350 parts by weight, relative to 100 parts by weight of the resin components, of an inorganic filler and (G) from 0.1 to 10 parts by weight, relative to the same, of a polymer which is miscible with or has an affinity for the component (a) of (A) and which has a polar group. The composition can be formed into articles having good heat resistance, a high modulus of elasticity and good toughness. In addition, the articles are advantageous in that their surface layers are hardly peeled.
Patent CA-2185306-A1 (CA)
Title: Radio-detection method of oxygenation reaction
Inventor: WATANABE YASUYOSHI
IPC: G01N33/60
Filed: 1996-09-11
Abstract: To permit detection of trace unstable reaction products to clarify the reaction process of oxygenation, this invenion provides a method of introducing positron nuclide 15O as an oxygen additive into the reaction system.
Patent CA-2187187-A1 (CA)
Title: Molten metal immersion probe
Inventor: WALL CHRISTOPHER
IPC: G01N1/10
Filed: 1996-01-29
Abstract: An immersion probe (10) for determining a liquidus temperature of a molten metal sample during solidification has a first refractory body (14) with an immersion face (24), an interior sample chamber (26), and a passageway (30) between the immersion face (24) and an end wall (28) of the chamber (26). A  heat sink (46) is positioned within the chamber (26) adjacent the end wall (28) and an insulating shield (50) is positioned within the chamber (26) adjacent the heat sink (46), each having an aperture corresponding to the inlet tube (36). The insulating shield (50) sinks thermal energy from within the chamber (26) at a second rate R2 slower than a first rate R1 of the interior walls of the chamber (26). A liquidus temperature sensor (56) is positioned within the chamber (26) away from the insulating shield (50). To determine the liquidus temperature, the probe (10) is immersed in the molten metal, and a molten metal sample flows into the chamber through the passageway (30). When the flow ceases, the heat sink (46) solidifies an adjacent portion of the molten metal and seals the sample within the chamber (26). The sealed sample solidifies along a solidification front that progresses toward the insulating shield (50). Accordingly, gaseous voids are prevented from being formed adjacent the sensor (56) while the liquidus temperature is determined.
Patent CA-2188577-A1 (CA)
Title: Improved method of soft tip attachment for thin walled catheters
Inventor: LUNN PETER A
IPC: A61M25/16
Filed: 1995-04-07
Abstract: A catheter comprising a soft tip segment (5), a transition segment (11), and a shaft segment (3). The soft tip segment (5) has at least two angular sections (6, 7) removed from the proximal end. The distal end of the transition segment (11) is bonded to the proximal end of the soft tip (5) segment. The transition segment (11) is comprised of materials having substantially higher tensile strength than the soft tip (5) segment. The distal end of the shaft (3) is bonded to the proximal end of the transition segment (11). The distal end of the shaft (3) has at least two angular sections (2, 4) removed.
Patent CA-2190680-A1 (CA)
Inventor: INTERMILL ALLAN WEBSTER
IPC: F27D99/00
Filed: 1996-11-19
Abstract: A furnace apparatus and method for the lengthwise graphitization (LWG) of carbonbodies are provided which utilize U-shaped metal furnace sections mounted on stationary rib supports to contain carbon electrode bodies and surrounding thermally insulating pack material. Vertical flues are provided between parallel rows of U-shaped metal furnace sections to accelerate cooling of graphitized electrode bodies and in a further embodiment water droplets are additionally sprayed on the metal furnace sections.
Patent CA-2192455-A1 (CA)
Title: Positive and positive/negative cell selection mediated by peptide release
Inventor: TSENG-LAW JANET
IPC: C12N5/06
Filed: 1995-06-13
Abstract: The invention provides a non-enzymatic method for the release of cells which have beem positively selected from a heterogeneous cell suspension by antibody-mediated binding to beads or other solid support.  The method entails forming within the cell suspension a complex comprising the solid support linked to a primary monoclonal antibody, which in tum is bound to a cell surface antigen on the target cells. The complex is separated from the cell suspension, and then contacted with a specific peptide which binds to the primary antibody, displacing the antibody from the cell surface antigen, thereby releasing the target cell from the complex. The invention also provides methods for positive/negative cell selection wherein target cells having a first antigen are selected from a heterogeneous cell suspension containing undesired cells having a second antigen. The invention also provides methods for identifying a specific peptide useful for the release of a target cell from the binding of a specific monoclonal antibody. The methods of the invention are particularly useful for the positive selection of CD34+ hematopoietic stem cells and the concomitant purging of undesired tumor cells or lymphocytes from the positively selected cell population. The purified CD34+ cell composition is then useful for reinfusion to a cancer patient after high-dose therapy in order to reconstitute the patient's immune system.
Patent CA-2193302-A1 (CA)
Inventor: SORENSEN SOREN CHRISTIAN
IPC: D07B7/16
Filed: 1996-12-18
Abstract: A method of injection molding a tie that includes a pawl having at least one tooth inside a locking head facing an abutment wall utilizes a core that defines at least a portion of a surface of the pawl that includes the at least one tooth.  The core is movable in relation to a first other mold part and is separated from a second other mold part not sooner than the first other mold part is separated from the second other mold part to thereby enable the pawl to flex into a space vacated by movement of the first other mold part during separation of the first other mold part from the second other mold part so that the tie can be removed from the mold without significantly damaging the at least one pawl tooth.
Patent CA-2194316-A1 (CA)
Inventor: KIVARI RAIMO
IPC: H04B1/38
Filed: 1997-01-03
Abstract: A cellular telecommunications system includes at least one base station and at  least one user terminal  that  is bidirectionally coupled to the at least one base station through an RF interface. The system further includes system circuitry for composing messages and transmitting composed messages continuously over a forward RF link to the at least  one user  terminal.  The messages  include  filler messages and other messages, and the circuitry composes the messages for specifying in a transmitted message a number of filler messages that will be consecutively transmitted. The  user  terminal  includes  a  receiver  for  receiving messages  from  the  forward RF  link  and  circuitry  for determining a number of consecutive filler messages that will be transmitted. The user terminal further includes a controller that is responsive to a received message for placing the user terminal in a powered-down state for a period of  time that  is a  function  of  the  number of consecutive filler messages. In a preferred embodiment of this invention the message is repeated a plurality of times during a message frame, and the user terminal receives at least one repeat of the message.  Also in a preferred embodiment of this invention, the message employs bits that are specified as reserved bits for transmitting the number of  filler messages,  thus making the teaching of this invention  downwards  compatible  with  existing  cellular telecommunications  systems,  such as  that specified by EIA/TIA-553 and similar systems.
Patent CA-2194859-A1 (CA)
Title: Enzymatic production of gluconic acid or its salts
Inventor: VROEMEN ALBERT JOSEPH
IPC: C12P7/58
Filed: 1996-05-13
Abstract: An enzymatic process for the conversion of glucose into gluconic acid, using concentrated glucose solutions. The process uses a combination of glucose oxidase and catalase enzymes which may be obtained from an Aspergillus niger strain and has a high ratio of catalase:glucase oxidase activity. The enzymatic process requires less time than conventional fermentation processes, the yield of the conversion is close to 100% and the obtained gluconic acid/gluconate solutions do not contain impurities.
Patent CA-2196683-A1 (CA)
Title: Method and apparatus for data alteration by manipulation of representational graphs
Inventor: SCHOTT ERIC G
IPC: G06F3/033
Filed: 1996-06-05
Abstract: A method and apparatus are provided for altering data by manipulation of representational dynamic graphs. Specifically, a method and apparatus are provided for using dynamic graphs wherein the computer user is able to manipulate the graph shape directly, which in turn not only modifies the graph, but also alters the corresponding and underlying tabularized data, as well as any associated numeric representations of the data that may be presented to the computer user. The method and apparatus are provided for use with a computer system having a processing unit, system memory, a user manipulation device, and a video display, wherein a dynamic graph is created having at least one data representation element which may be focused or unfocused. Creation of the dynamic graph includes creating and saving graphical and statistical characteristics of the dynamic graph. Manipulation of a data representation element via the user manipulation device may include reconfiguring the dynamic graph to select a focused data representation element desired to be manipulated. Modification of the dynamic graph according to user manipulation includes altering not only the graphical display, but also the underlying graph data corresponding to the dynamic graph. The method and apparatus thereby provide a simple and easy way for users to alter their data and modify the interrelationship betweeen associated data by intuitive manipulation of representational dynamic graphs.
Patent CA-2199170-A1 (CA)
Inventor: LAMERS PAUL H
IPC: C08F8/40
Filed: 1995-08-18
Abstract: N-acyl aminomethylene phosphonates are provided having general formula (A) wherein R1 is hydrogen, an aliphatic radical having 1 to 25 carbon atoms, or an aromatic radical having 6 to 25 carbon atoms; R2 is hydrogen, an aliphatic radical having 1 to 25 carbon atoms, or an aromatic radical having 6 to 25 carbons atoms; and R3 is a group remaining after reaction of a hydroxyl group-containing or epoxy group-containing polymer with an acidic hydrogen of a group (B). Also provided are waterborne coating compositions containing metallic pigments which are normally reactive with water or moisture to release hydrogen gas, stabilized against gassing by incorporation of these N-acyl aminomethylene phosphonates into the waterborne coating compositions.   (see formula I and II)
Patent CA-2200345-A1 (CA)
Title: Procede de mesure de proteines de thymopoietine dans le plasma et dans le serum
Inventor: CULLER MICHAEL D
IPC: G01N33/74
Filed: 1995-09-18
Abstract: Procédé de mesure précise de thymopoiétine (TP) dans le sérum ou dans le plasma de l'homme consistant à dissocier la TP de complexes de protéines, à libérer la TP fixée sous une forme non fixée, à extraire la TP, à préparer la TP dans le but de la soumettre au procédé de mesure et à mesurer les niveaux de TP selon une technique de détermination appropriée.
Patent CA-2200793-A1 (CA)
Title: Mpeg coded picture decoding apparatus
Inventor: YAMAJI HIROTAKA
IPC: H04N21/43
Filed: 1997-03-24
Abstract: The invention provides an MPEG coded picture decoding apparatus which can display, even if a gap in MPEG coded video data occurs in a transmission line or the like, video data the same as the original data, which do not suffer from the gap. The MPEG coded picture decoding apparatus includes a stream buffer memory for storing an MPEG stream, a pack header processing section for separating a pack header of the MPEG stream and extracting SCR information, a PES packet processing section for separating a header of a PES stream, extracting PTS information and separating packets, a GOP detection section for detecting a GOP of a video stream, a video buffer memory for storing the video steam, a video MPEG decoding section for MPEG decoding the video stream, a decoded data storage section for storing and managing one picture frame, a video display processing section for storing several picture frames and reading out at a display timing, and an error information processing section for supervising a picture frame memory at each display timing and developing a video re-sending request when the picture frame memory is in an irregular condition.
Patent CA-2201931-A1 (CA)
Title: Mixture of phospholipid-containing fats and lcp fatty acids
Inventor: SCHWEIKHARDT FRIEDRICH
IPC: A23L33/12
Filed: 1995-10-02
Abstract: A formula food and a fat mixture for such a formula food are provided.      In the fat mixture, arachidonic acid and docosahexaenoic acid are present both in the form of phospholipids and also in the form of triglycerides.
Patent CA-2202399-A1 (CA)
Title: An explosive composition
Inventor: ZIMMERMANN LEON MICHAEL
IPC: C06B47/14
Filed: 1995-10-10
Abstract: A watergel explosive composition is described which contains an oxidiser salt, a sensitiser, a thickener, a crosslinking agent, a fuel and less than 8 %, by mass, of the composition of water. The explosive composition is cap sensitive in packages or cartridges having a diameter of about 26 mm or less at temperatures below about 5 ·C when detonated with a standard number 6 strength detonator. The explosive composition does not require a supplementary sensitisor or a perchlorate salt to achieve this cap sensitivity. A method of producing the explosive composition by separately preparing a thickened aqueous phase and a dry phase, and allowing the thickened phase to stand for a period of time before the mixing of the two phases, as well as explosive paper cartridge containing the watergel explosive composition, are also described.
Patent CA-2207238-A1 (CA)
Inventor: AMONETT DANIEL KEITH
IPC: H01H43/10
Filed: 1997-05-28
Abstract: An appliance timer has features to facilitate automated assembly or manual assembly. A timer housing base accepts timer components from two directions, and installation of components in either direction is along a straight axis. A motor in the timer engages a gear train which runs a drive cam. The drive cam imparts motion to a camstack which then engages timer blade switches, and the blade switches operate the appliance. A subinterval is also supplied on the timer to allow periodic operation of a switch without the use of the camstack. The timer also features a quiet manual advance which removes the blade switches from communication with the camstack to allow an operator to select various timer programs without any of the clicking noises that are usually associated with timer program selection. Furthermore, a detent slider is positioned in communication with the camstack to provide a tactile feel for the operator of the timer when selecting between various timer programs.
Patent CA-2207589-A1 (CA)
Title: Polyether copolymers and a process for preparing them
Inventor: PURBRICK MALCOLM DONALD
IPC: C08G65/32
Filed: 1994-12-21
Abstract: A block copolymer containing one or more polyoxyethylene blocks and one or more polyoxy(higher alkylene) blocks wherein at least some of the blocks are linked together by an oxymethylene group can be prepared by reacting one or more dihydroxy terminated polymers selected from polyethylene glycol), poly(higher alkylene glycol) and block copolymers thereof in solution with a dihalomethane in the presence of a base. Such copolymers can be used as surfactants and surface modifiers.
Patent CA-2209200-A1 (CA)
Inventor: GAUDREAULT ROGER
IPC: A44B11/25
Filed: 1997-08-06
Abstract: Le précis n'est pas disponible en ce moment
Patent CA-2210807-A1 (CA)
Title: Fast hardening aqueous coating composition and paint
Inventor: YOUNG JAMES W JR
IPC: C09D133/10
Filed: 1996-01-18
Abstract: The invention relates to a fast hardening aqueous coating composition comprising from 95 to 99 weight percent of an anionically stabilized aqueous emulsion of a copolymer having a Tg of from -10 ·C to 50 ·C, the copolymer containing two or more ethylenically unsaturated monomers, wherein from 0 to 5 weight percent of the monomers are .alpha.,.beta.-ethylenically unsaturated aliphatic carboxylic acid monomers; from 0.2 to 5 weight percent of a polyimine having a molecular weight of from 250 to 20,000; and from 0.2 to 5 weight percent of a volatile base, wherein the composition has a pH from 8 to 11, and wherein a cast film of the composition has a hardening rate measurement rating of at least 5 within 20 minutes after casting under ambient conditions of temperature up to 30 ·C and relative humidity no less than 50 percent. Within the scope of the invention are a process for the preparation of a fast hardening aqueous coating composition, a fast hardening aqueous traffic paint, and a fast hardening migration-resistant binder for composites.
Patent CA-2214411-A1 (CA)
Inventor: VOGEL EMMANUEL
IPC: A61K41/00
Filed: 1996-04-04
Abstract: Porphycène de formule (a).
Patent CA-2215147-A1 (CA)
Title: Method of fabricating a heater coil for a catheter
Inventor: MCGAFFIGAN THOMAS HAYNES
IPC: A61M25/00
Filed: 1996-02-15
Abstract: A heater (12) for a catheter (10) used in monitoring constant cardiac output is fabricated using a bifilar wire (21) coated with polyvinyl chloride (PVC) like that used for the catheter. The bifilar wire is coated with the PVC using a conventional extrusion technique, producing a coated lead (24, 32). The coated lead is wrapped around the exterior surface of the catheter, forming a helical coil. Heat is applied to the coated lead to melt the PVC coating, causing it to bond the lead to the catheter. The melted PVC also flows into gaps (23) or notches between adjacent coils of the lead, producing a relatively smooth outer surface for the heater when cooled.
Patent CA-2216190-A1 (CA)
Inventor: BUTTS ANDREA M
IPC: A23G3/28
Filed: 1997-11-13
Abstract: In  the  sugarcraft  industry  bridgeless  extension  is  typically accomplished by piping strings of royal icing from the side surface of the cake extending outward onto a bridge of piped royal icing, using pins.   The piped bridge is removed by dissolving it with a dampened brush.     The tool is designed to eliminate the creation of the piped royal icing bridge.  It consists of a specially designed wire frame which is inserted into the cake and onto which the strings are piped.  The tool is removed after the strings are dried leaving the piped strings suspended from the cake in various patterns and at various angles.
Patent CA-2218082-A1 (CA)
Inventor: WANG HSIEN-CHANG
IPC: C08L21/00
Filed: 1996-05-02
Abstract: Mélanges vulcanisables contenant un copolymère halogéné constitué d'une isomonooléfine C¿4?-C¿7? et de para-alkylstyrène mélangés à un ou plusieurs polymères élastomères oléfiniquement insaturés. La vulcanisation s'effectue de préférence à l'aide de stéarate de zinc utilisé comme agent vulcanisant à des niveaux inférieurs à environ 3,0 phr pour produire des vulcanisats présentant une addition de copolymérisat sélective, constituée d'halogène benzylique, présente dans la double liaison du polymère insaturé, sans durcissement naturel significatif du polymère halogéné.
Patent CA-2218402-A1 (CA)
Title: Electronic competition system and method for using same
Inventor: LEVASSEUR JACQUES
IPC: G06F19/00
Filed: 1996-03-28
Abstract: An electronic competition system for professional and amateur competitors, wherein the professionals move around a real environment (19) while the amateurs move around a virtual representation of the same environment. In the case of a motor race on a closed circuit (19), each real circuit is combined with a circuit server device (21) that records the position and performance of real vehicles each of which is driven by a professional competitor. The circuit server device (21) is connected to terminal devices (28, 29, 30) assigned to respective amateur competitors via local server devices (22, 23, 24). Each of the terminal devices has a cockpit simulating the cockpit of a real vehicle, and means for displaying the racing circuit on screen, processing cockpit data and comparing it with the performance of the other virtual vehicles and the real vehicles.