baber/WOPTO huggingface dataset:
Patent CA-2298630-A1 (CA)
Title: Procede chromatographique de detection de mutation par utilisation d'enzymes agissant specifiquement sur le site de mutation
Inventor: GJERDE DOUGLAS T
IPC: C12Q1/68
Filed: 1998-08-18
Abstract: La présente invention concerne un procédé d'analyse d'un échantillon de double hélice d'ADN de façon à déterminer la présence d'une mutation dans cette double hélice. Ce procédé consiste à mettre l'échantillon en contact avec un réactif se liant au site de mutation, puis à séparer et détecter chromatographiquement le produit. La séparation chromatographique peut se faire par procédé MIPC (Matched Ion Polynucleotide Chromatography), chromatographie à exclusion de taille, chromatographie par échange d'ions, ou chromatographie en phase inverse. Le réactif se liant au site de mutation peut être une enzyme ou un réactif chimique non-protéinique. Selon une réalisation, un réactif se liant au site de mutation vient se lier au site de mutation puis modifie la durée de rétention chromatographique. Selon une autre réalisation, un réactif se liant au site de mutation vient se cliver sur le site de mutation, ce qui se retrouve sous la forme d'une augmentation du nombre de fragments.
Patent CA-2299705-A1 (CA)
Title: Nanocomposites formed by onium ion-intercalated clay and rigid anhydride-cured epoxy resins
Inventor: WESTPHAL ERIN K
IPC: C09C3/10
Filed: 2000-02-28
Abstract: Intercalates formed by contacting a layered material, e.g., a phyllosilicate, with an intercalant onium ion spacing agent and an anhydride-curable epoxy resin. The intercalant onium ion spacing agent converts the interlayer region of the layered materials from hydrophilic to hydrophobic, therefore, the anhydride-curable epoxy resin can be easily intercalated into the interlayer spacing. The co-presence of the co-intercalant anhydride-curable epoxy resin in the interlayer space provides surprising increase in glass transition temperature for anhydride-curable epoxy resin matrix polymer/co-intercalant compounded nanocomposites. The nanocomposites (e.g., epoxy-clay) prepared from the intercalants demonstrate enhanced mechanical, thermal and chemical resistance compared with pristine polymer matrices.
Patent CA-2302222-A1 (CA)
Inventor: WOLTERS KAREN
IPC: B02C18/18
Filed: 1998-08-26
Abstract: An improved hand-held, hand-crank operated rotary drum-type grater (74) for cheese and the like is provided which has a housing that has portions which are slidably engageable with mouth adjacent lip portions (76) of a predetermined collection vessel (75) for grated material. The grater (74) preferably utilizes a cage-type drum body (51) having a cylindrical surface defined by a metal sheet having blade perforations (56). The drum (51) is insertable into either end of a cylindrical cavity defined transversely in the unitary housing of the grater hopper rotary drum (51) and thereafter the drum (51) is engageable with a crank (63). The vessel (75) can be associated with either opposite side of the housing and the association of this vessel (75) with either housing side does not interfere with grater (74) operation.
Patent CA-2302712-A1 (CA)
Title: Process for the preparation of high grade synthetic rutile and pig iron
Inventor: MOHANTY BISHNU CHARAN RABINDHA
IPC: C22B4/00
Filed: 2000-03-24
Abstract: The present invention relates to an improved process for the preparation of high grade synthetic rutile from ilmenite with pig iron as a by-product. The process comprises subjecting ilmenite to reduction with coal, cooling and removing unreacted coal to obtain a product having 80-95 % metallisation, smelting the metallised ilmenite mixed with less than 10% carbon (w/w) in a transferred arc plasma using arc current, under flow of inert gas for a fixed time. The metal is then separated as pig iron and TiO2 as slag, the slag ground followed by oxidation at high temperature in the presence of an oxidising gas, the oxidised product being leached with dilute HCl followed by filtration, washing and drying to obtain synthetic rutile.
Patent CA-2303058-A1 (CA)
Title: Blowout preventer protector and method of using same
Inventor: DALLAS L MURRAY
IPC: E21B33/068
Filed: 2000-03-28
Abstract: A blowout preventer (BOP? protector is adapted to support a tubing string in a wellbore so that the tubing string is directly accessible during a well treatment to stimulate production. The BOP protector includes a mandrel having a sealing assembly mounted to its bottom end for pack-off in a casing of a well to be stimulated. The mandrel is connected at its top end to a fracturing head, including a central passage and radial passages in fluid communication with the central passage.      The mandrel is locked in a fixed position by a lockdown nut that prevents upward movement induced by fluid pressures in the wellbore. The advantages are that the BOP protector permits access to the tubing string during well treatment and enables an operator to move the tubing string up and down or run coil tubing into or out of the wellbore without removing the tool. This reduces operation costs, saves time and enables many new procedures that were previously impossible or impractical.
Patent CA-2303410-A1 (CA)
Inventor: DERBY MICHAEL A
IPC: A61K39/15
Filed: 1998-09-11
Abstract: La présente invention concerne des procédés permettant d'induire une réponse spécifique de l'antigène et propre aux muqueuses des cellules T cytotoxiques, et d'utiliser cette réponse pour prévenir et traiter les infections causées par des agents pathogènes s'introduisant dans l'organisme via les muqueuses.
Patent CA-2305154-A1 (CA)
Title: Network monitoring method for telecommunications network
Inventor: RAJALA ANTTI
IPC: H04Q7/34
Filed: 1998-10-13
Abstract: The present invention relates to monitoring and maintaining a network in telecommunications networks which comprise a large number of network elements.  The network elements are presented as a hierarchical diagram or as a map display on a graphical user interface. In accordance with the invention, the graphical user interface presents performance information of the network element as a grphical presentation (41, 41A, 42, 42A, 43, 43A) in connection with the network element symbol in such a way that the operator can, at one glance, identify the network elements that are the most important in terms of the operation of the network or the network elements most affected by faults.  In accordance with an embodiment of the invention, the alarm situation of each element is displayed as a graphical presentation (36) along with the network element symbol on the graphical user interface simultaneously with the graphical presentation representing the performance. In this manner, fault management FM and performance management PM are connected, whereby a link is provided between the faults and their effects on the telecommunications network or the network element.
Patent CA-2305777-A1 (CA)
Title: High productivity, low fugitive voc emission foam process
Inventor: WU WEN PAO
IPC: C08J9/12
Filed: 1998-10-01
Abstract: A blowing agent for foaming polystyrene consisting essentially of at least one low permeability volatile organic compound, at least one low volatility non-volatile organic compound and, optionally, at least one high volatility non-volatile organic compound. In one embodiment, the low permeability volatile organic compound is selected from the group consisting of isopentane and isobutane, the low volatility non-volatile organic compound is acetone and the high volatility non-volatile organic compound is carbon dioxide. The blowing agent of the present invention may be used to foam a polystyrene foam structure. The blowing agent is directed to achieving low fugitive volatile organic compounds (VOC) emissions.
Patent CA-2306322-A1 (CA)
Inventor: ROZAK ALEXANDER THOMAS
IPC: E21B10/32
Filed: 2000-04-27
Abstract: A novel apparatus for an underreamer for reducing damage to coal seams is disclosed. Natural fracture systems form the main permeable pathways for gas migration in coal and are a major control on coal's ability to produce methane or adsorb injected gases, as is desirable for sequestration of carbon dioxide or other green house gases. Maintenance of these fractures in an open state is critical for the transfer of gas between the coal seam and a bore hole. These natural fractures exist as orthogonal sets, with vertical or substantially vertical fractures cut by horizontal or substantially horizontal fractures such that the entire fracture system resembles as assemblage of tightly packed cubes. Research has shown that these natural fracture systems are easily damaged by particulate plugging of clays liberated from surrounding strata during drilling or prior art underreaming  operations. This particulate plugging and subsequent damage can severely hamper the ability of the coal to produce methane or accept injected gases. Underreaming of coal seams is desirable to remove coal adjacent to the borehole that was damaged during drilling operations in order to maximize gas flow between the borehole and the natural fracture system. The disclosed invention can confine underreaming to desirable coal seams while leaving potentially damaging clays in the surrounding strata untouched, minimizing the likelihood of newly liberated clays plugging the fractures during underreaming operations, thus maximizing potential methane recovery or gas injection volumes.
Patent CA-2306406-A1 (CA)
Inventor: TAKUBO NOBORU
IPC: F23C99/00
Filed: 2000-04-20
Abstract: The invention provides a water-tube boiler which allows further NOx reduction and CO reduction to be implemented with a simple construction of the boiler body itself, and which is improved in boiler efficiency. The water-tube boiler includes a first water tube array made up of a plurality of first water tubes arranged into an annular shape, a combustion chamber defined inside the first water tube array, a first opening defined at part of the first water tube array, a cooling water tube array made up of a plurality of cooling water tubes arranged into an annular shape in a zone within the combustion chamber where burning-reaction ongoing gas is present, gaps provided between adjacent cooling water tubes so as to permit the burning-reaction ongoing gas to flow through, a burning-reaction continuing zone, where burning reaction is continuously effected, provided between the cooling water tube array and the first water tube array, a second water tube array made up of a plurality of second water tubes arranged into an annular shape outside the first water tube array, and a gas flow passage provided between the first water tube array and the second water tube array, wherein in the gas flow passage, heat transfer area per unit space is larger on the downstream side than on the upstream side.
Patent CA-2309422-A1 (CA)
Title: Hydrogen sulfide removal process
Inventor: WALTON PETER S
IPC: C09K3/00
Filed: 2000-05-25
Abstract: Hydrogen sulfide is removed from gas streams by reaction with sulfur dioxide to produce sulfur. The reaction is effected in a reaction medium comprising a non-aqueous Lewis base with a pK b value of about 6 to about 11. The reaction medium possesses a specific combination of properties: a) absorbs sulfur dioxide and reacts chemically therewith, the reaction medium containing hydrogen sulfide, sulfur and water to form complex sulfur-oxide species, including sulfate and polythionate species, whereby the resulting solution exhibits no or an insignificant sulfur dioxide vapor pressure; b) absorbs hydrogen sulfide; c) removes the hydrogen sulfide from the gas stream through contact of the gas stream with the reaction medium in the presence of the complex sulfur-oxide species; d) acts as a catalyst for the overall reaction of the hydrogen sulfide with sulfur dioxide to produce sulfur; and (e) has the capacity to absorb sulfur dioxide in sufficient quantity to remove substantially all the hydrogen sulfide from the gas stream, notwithstanding short term variations in the stoichiometric balance between the hydrogen sulfide and the sulfur dioxide in the reaction medium. The reaction medium may be preloaded with sulfur dioxide, whereby the complex sulfur-oxide species are preformed in the reaction medium before contacting with the gas stream.
Patent CA-2309887-A1 (CA)
Title: Neoacid corrosion inhibitors
Inventor: MERCER WILLIAM C
IPC: C23F11/12
Filed: 1996-11-22
Abstract: This invention relates to organic acid corrosion inhibitors for use in antifreeze coolant compositions. The corrosion inhibitors comprise a C8 mono-carboxylic acid component, or isomers and/or salts thereof, and a neo-decanoic acid, or isomers and/or salts thereof. The corrosion inhibitors of this invention provide improved corrosion protection to metal surfaces as compared to conventional inhibitors and provide surprisingly improved corrosion protection as compared to inhibitors containing only a single mono-carboxylic acid component.
Patent CA-2311127-A1 (CA)
Inventor: MOHR JURGEN
IPC: C07C213/04
Filed: 1998-12-17
Abstract: The invention relates to a method for producing oxalkylated amines or alcohols, whereby a reaction mixture containing an amine or an alcohol or a mixture of two or more amines and/or alcohols and an alkylene oxide or a mixture of two or more different alkylene oxides are made to react in one or several successive reaction steps. At least one of the steps of the reaction occurs in the presence of a basic catalyst and the reaction mixture in at least one of the reaction steps contains formic acid or a formic acid salt or a mixture of the two or more or the reaction mixture is mixed with formic acid or a formic acid salt or a mixture of the two or more when oxalkylation is finished. The alkoxylates obtained using the inventive method have little natural colour or odour.
Patent CA-2312637-A1 (CA)
Title: Superchilled methods for the processing of hard-shelled crustaceans
Inventor: GALLANT CYRIL G
IPC: A22C29/02
Filed: 2000-06-28
Abstract: Methods are provided for the optimization of the utilization of crustaceans, e.g., lobsters and crabs, especially through the use of underutilized components thereof. The methods include separating the intact shell of hard-shelled crustaceans from the raw edible meat contained therein which is very strongly attached to the shells.  The methods each include the first step of initiating the detachment of the raw edible meat from the intact shell by the step of subjecting the intact shell to the action of a superchilled ice/salt mixture which would have a maximum concentration of salt which can bring the temperature down to the eutectic temperature. Mixtures of sodium chloride and ice, or mixtures of calcium chloride and ice, are most commonly used to provide maximum temperatures of -21°C and -55°C. However, in the contemplated procedure, the amount of such salt is selected to provide a chilled temperature of +3°C to -3°C. The intact shell is then separated from the raw edible meat by several different alternative steps. One alternative step includes subjecting the so-treated intact shell to vacuum aspiration to separate the intact shell from the raw edible crustacean meat, so as to recover the raw edible crustacean meat. Another alternative step includes manually separating the intact shell from the raw intact edible crustacean meat, so as to recover the raw intact edible crustacean meat from the intact shell. These methods are particularly applicable to the recovery of raw edible crustacean meat from underutilized portions of hard-shelled crustaceans.
Patent CA-2312962-A1 (CA)
Title: Plumbing articles from poly(aryl ether sulfones)
Inventor: EL-HIBRI MOHAMMED J
IPC: C08L81/06
Filed: 1999-10-05
Abstract: Plumbing articles made from a thermoplastic resin comprising a poly(biphenyl ether sulfone) and a poly(aryl ether sulfone) comprising bisphenol A residues.
Patent CA-2317314-A1 (CA)
Title: Animal nutrition compositions
Inventor: NICHOLS SCOTT
IPC: A23K1/16
Filed: 1999-01-07
Abstract: Compositions providing increased energy content of animal feed using plant crop biomass which include a polyhydroxyalkanoate have been developed. In one embodiment, the compositions can be prepared using conventional techniques for harvesting and processing plant crops into forms useful as animal feed, wherein the plant, or parts thereof, have accumulated PHA, preferably in excess of 2 % by dry weight of the plant tissue. In a preferred embodiment, the PHA is accumulated in corn or an oilseed. The feed compositions can include the PHA-containing meal byproduct from corn or oilseed processing. In another embodiment, the PHA can be provided with the green tissue of plants, such as clover, alfalfa, sorghum, and silage corn.
Patent CA-2317657-A1 (CA)
Title: Pitot tube inlet insert
Inventor: SHAW JAMES G
IPC: F04D1/12
Filed: 1999-01-21
Abstract: An insert (40) is provided for attachment to the inlet or nose of a pilot tube (10) to withstand the wear and damage imposed on the inlet of the pilot tube by high velocity and high pressure fluid moving through the rotary casing and into the pilot tube.  The insert (40) reduces the amount of damage normally done to the pilot tube (10) under normal operating conditions thereby extending the life of the pilot tube. When worn or damaged, only the insert needs to be replaced rather than the entire pilot tube as is done in conventional systems. The insert (40) permits the machining of the insert to meet the specifications of a particular application, thereby providing the ability to control pump performance over a wider range of operational conditions.
Patent CA-2317966-A1 (CA)
Inventor: GREGOIRE DARREN R
IPC: H04Q3/66
Filed: 2000-09-08
Abstract: A satellite communication system which performs multicast switching on data cells. A switch 80 receives the data cells at a set of input ports IP1 and directs those including a multicast routing code to a first set of output ports OP2 or OP128. The switch 80 also directs data cells effectively omitting the multicast routing code to a second set of output ports OP1. One or more multicast replication modules 110, 130 are coupled to the first set of output ports and replicate data cells requiring multicast processing. During the processing, the multicast routing code is effectively omitted and the replicated cells are coupled to input ports IP2 or IP 128 so that the replicated data cells are transmitted to the second set of output ports OP1. An outbound processing module 100 is coupled to output ports OP1 for processing the data cells for transmission over a satellite downlink transmitter 104.
Patent CA-2318961-A1 (CA)
Title: Steerable underwater plow with movable body member
Inventor: ROWLEY STEVEN R
IPC: E02F5/14
Filed: 1999-03-15
Abstract: A steerable plow (10) configured for towing in a direction along a seabed (12) comprises a body (16) and a soil cutting member (18) slidingly connected to the body. The soil cutting member defines a cutting vane (32) for cutting a trench in the seabed. The body includes two skids (20) and a cross member (24) spanning the two skids. The skids are spaced apart from each other and from the soil cutting member to stabilize the plow (10). A motive element (36) is included to move the soil cutting member (18) relative to the body (16), and a steering control included within the head (19) receives commands from a remote location to control the motive element. At least one towing member (28) is included to attach the plow (10) to a tow cable (30).
Patent CA-2320333-A1 (CA)
Title: Water dispersible granulates comprising an active hydrophobic substance
Inventor: TAQUET PASCAL
IPC: A61K8/04
Filed: 1999-01-22
Abstract: The invention concerns water dispersible granulates comprising at least a hydrophobic organic active substance (MA) solid or with melting point less than 100° C., in the form of particles, finely divided inside and encapsulated by a solid matrix and a water soluble or water dispersible polypeptide (PP) synthetic or of plant origin and at least an ionic or amphoteric dispersing agent (D) at the active substance/matrix interface. The invention also concerns the method for preparing said granulates in two steps, the first step consisting in preparing a dispersion in water comprising at least a hydrophobic active substance, at least an ionic or amphoteric dispersing agent (D) and at least a water soluble or water dispersible polypeptide (PP) synthetic or of plant origin, and the second step consisting in drying the dispersion until a granulate is formed.
Patent CA-2322354-A1 (CA)
Inventor: WURSTLIN WALTER
IPC: B29C45/17
Filed: 2000-10-05
Abstract: A hot runner nozzle (1) for injection-molding forms has a nozzle body (2) with a throughput channel (3) connected to a nozzle exit (5) for melts. At least one jacket-heating unit (8) is located at the exterior perimeter of the nozzle body (2). This heating unit is enclosed at its exterior perimeter by a sleeve (10), which is flexible in the radial direction. The sleeve (10) is enclosed at its exterior perimeter by at least one circular lock (11) that rotates about its longitudinal axis (12) relative to the sleeve (10) between a released position and a clamped position. The facing surfaces of the sleeve (10) and the lock (11) each have a profile that deviates from that of a cylindrical shell located concentric to the longitudinal axis (12). The facing surface of at least one of these parts (10, 11) is at least in certain areas designed as a wedge lock surface (13) that has an abutting slant located in a plane orthogonal to the longitudinal axis (12), against which a seating area of the surface of the other part (11, 10) lies.
Patent CA-2326966-A1 (CA)
Title: Method of manufacturing blade of hockey stick or the like, and blade of stick and blade core
Inventor: TIITOLA ANTTI-JUSSI
IPC: A63B59/14
Filed: 2000-11-28
Abstract: A method of manufacturing a blade of a hockey stick or the like, a blade and a blade core used in the blade. The blade core is manufactured of a plastic ma-terial, recesses for arranging a strengthening layer being provided in vertical sides thereof. According to a preferred embodiment of the invention, the sides of the blade core are provided with two recesses within each other. Further-more, a reinforcing element cut off from a wooden plate can be used as an inner strengthening layer of the blade core.
Patent CA-2327645-A1 (CA)
Inventor: SCHWARZ HELMUT
IPC: F16B37/08
Filed: 2000-12-06
Abstract: There is disclosed a retaining-spring insert chamber having a pair of chamber members for receiving a retaining-spring. The retaining spring is inserted loosely into the hollow between the joined pair of chamber members.
Patent CA-2329108-A1 (CA)
Title: Control system
Inventor: WALTON ANTHONY STEPHEN
IPC: H04N7/173
Filed: 2000-12-20
Abstract: A control system for controlling the operation of equipment such as a television and VCR via remotely generated signals in accordance with a first protocol. The system includes one or more remote controllers for generating equipment control signals in accordance with a second protocol. An STB includes a sensor for detecting control signals from the remote controllers, and a signal generator for generating and transmitting corresponding equipment control signals using the first protocol to the equipment. The STB causes the appearance of the remote controller for the equipment to be displayed on a display. The remote controller of the control system allows a user to interact with the display to select a control instruction from the displayed equipment remote controller.