baber/WOPTO huggingface dataset:
Patent CA-2273470-A1 (CA)
Title: Increasing causticizing efficiency of alkaline pulping liquor by borate addition
Inventor: TRAN HONGHI N
IPC: D21C11/04
Filed: 1999-05-31
Abstract: Method for improving causticizing efficiency in the conventional lime recausticization portion of alkaline pulping processes, such as are commonly used in the pulping and bleaching of wood and non-wood cellulose fiber materials. An aqueous solution of sodium carbonate is reacted with lime to produce sodium hydroxide (causticization) in the presence of borate to improve the causticization reaction efficiency.  Borate is provided in an amount sufficient to maintain a boron to sodium molar ratio in the range of between about 0.001:1 and 0.4:1, resulting in an increased causticization efficiency. An added benefit is reduction of inorganic deadload in the pulping circuit.
Patent CA-2273768-A1 (CA)
Title: Unsymmetrical polyurea-urethane fertilizer encapsulation
Inventor: ROSTHAUSER JAMES W
IPC: C05G3/00
Filed: 1999-06-09
Abstract: This invention relates to processes for the production of unsymmetrical polyurea-urethane coated granular fertilizer products, and to the unsymmetrical polyurea-urethane coated granular fertilizer products produced by these processes. These processes comprise coating fertilizer granules with compounds which react to form unsymmetrical polyurea-urethane coatings, then the compounds are polymerized. Suitable compounds comprise a) an organic polyisocyanate component, and b) an alkanolamine component containing at least one primary or secondary amine group and at least one hydroxyl group. These compounds are present in sufficient quantities that the NCO to active hydrogen group is from about 0.5:1.0 up to about 1.5:1Ø It is necessary that sufficient amounts of these compounds are applied to the fertilizer granules such that the unsymmetrical polyurea-urethane coated granular fertilizer particles contain from about 0.5 to about 15% by weight of polyurea-urethane, based on the total weight of the encapsulated fertilizer particles.
Patent CA-2277752-A1 (CA)
Title: Amines aromatiques de couleur stable et production de polyols de polyether a base d'amines aromatiques de couleur claire
Inventor: HEADLEY KEITH J
IPC: C07C211/49
Filed: 1998-01-13
Abstract: Cette invention se rapporte à des compositions d'amines aromatiques stables. Ces compositions comprennent: (a) un composé choisi dans le groupe constitué par des aldéhydes, des cétones, des acétals et des cétals et (b) une amine aromatique. Cette invention se rapporte également à un procédé pour stabiliser la couleur des amines aromatiques et à l'utilisation de ces amines aromatiques comme initiateurs dans la préparation de polyols de polyéther.
Patent CA-2279803-A1 (CA)
Title: Output flow control with adaptive feed-forward from input
Inventor: WIBOWO EKO ADI
IPC: H04L47/56
Filed: 1999-08-09
Abstract: A flow control scheme applicable to a variety of switching equipment, including terrestrial switches, is provided. The flow control scheme is especially suitable for satellite on-board packet switches where efficient resource utilization and design simplicity are critical requirements. The flow control scheme is intended for traffic that places little or no constraint on delay performance.
Patent CA-2280281-A1 (CA)
Title: Current transformer saturation correction using artificial neural networks
Inventor: CUMMINS JAMES C
IPC: H02P13/00
Filed: 1999-08-12
Abstract: A method and apparatus of correcting for saturation in a current transformer, which outputs a current measurement, is provided. A switching algorithm receives a value of the current measurement from the current transformer and determines within which of three ranges the value falls. If the value falls in a first range, the current measurement is provided to a protective device such as a relay. If the value falls in a second range, the current measurement is provided to an artificial neural network that produces an output that accounts for saturation of the current transformer. If the value falls in a third range, the current measurement is provided to another artificial neural network that produces an output that accounts for saturation of the current transformer.
Patent CA-2284290-A1 (CA)
Title: Nutritional supplement for cardiovascular health
Inventor: VESTER SAMUEL RUSSELL
IPC: A23L33/15
Filed: 1998-03-20
Abstract: A nutritional supplement for improving cardiovascular health via aiding in preventing, delaying the onset of and/or slowing the progression of atherosclerosis and coronary heart disease, the supplement comprising one or more flavonoids and folic acid or folate; and a method for aiding in preventing, delaying the onset of and/or slowing the progression of atherosclerosis and coronary heart disease are described.
Patent CA-2285150-A1 (CA)
Title: Drop down emergency lighting unit
Inventor: MADADI ABI
IPC: F21V21/30
Filed: 1999-10-06
Abstract: A drop down concealed emergency lighting unit includes a box-like housing for substantially flush mounting in a recess and a pivotally mounted door for closing the opening in the housing and upon which is mounted a lamp unit. A drive assembly moves the door between the open and closed positions and includes a DC motor on the housing with a drive gear which is operatively engageable with a driven gear on the door to move the door to the closed position. An electrical control circuit senses the absence of alternating current and effects disengagement of the gears to allow the door to move from the closed position to the open position, and senses the restoration of alternating current to effect reengagement of the gears to actuate the motor to move the door to the closed position.
Patent CA-2285250-A1 (CA)
Title: Defrost control for space cooling system
Inventor: KITCHEN JAMES A JR
IPC: F25D21/00
Filed: 1998-04-06
Abstract: An improved defrost controller (20) is provided for a space cooling system (10) of the type having an evaporator (12) in heat exchange relationship with a space to be cooled, a condenser (14), a compressor (16) for circulating heat transfer fluid between the evaporator (12) and condenser (14), an expansion valve (18) located between an outlet (17) from the condenser (14) and an inlet (19) to the evaporator (12), and a defroster (36) operatively associated with the evaporator (12). The expansion valve (18) is positionable in a plurality of positions to maintain a desired level of superheat across the evaporator (12). The defrost controller (20) monitors the expansion valve position and activates the defroster (36) in response to the expansion valve (18) being in a more closed position than a predetermined defrost target position. The defrost controller (20) is further operable to prevent defrosting from occurring at times other than predetermined allowed defrost times, even if the position of the expansion valve (18) indicates a demand for defrost.
Patent CA-2286471-A1 (CA)
Title: Cosmetic composition based on associative polyurethane and non-ionic polymers with fatty chains
Inventor: DUPUIS CHRISTINE
IPC: A61K8/00
Filed: 1998-12-23
Abstract: The invention concerns cosmetic compositions containing, in a cosmetically acceptable medium, as thickening system: (A) at least a non-ionic associative polyurethane and (B) at least a non-ionic polymer comprising at least a fatty chain.
Patent CA-2287853-A1 (CA)
Inventor: FUKUCHI TADAKAZU
IPC: B41M5/333
Filed: 1999-11-01
Abstract: A thermally sensitive recording medium which has thermally sensitive recording layer containing colorless or pale colored basic leuco dye and organic color developer as main components on a substrate, wherein said thermally sensitive recording layer contains diphenylsulfone bridgeable type compound represented by general formula (1) and at least one compound represented by general formula (1).   (see formula I) In general formula (2), X and Y can be different and indicates a saturated or an unsaturated liner or grafted hydrocarbon group of carbon number 1-12 which can possess ether bond, or indicates (see formula II) or (see formula III) wherein R indicates a methylene group or an ethylene group, T indicates a hydrogen atom or an alkyl group of carbon number 1-4, and R1-R6 independently indicate a halogen atom, an alkyl group of carbon number 1-6, or an alkenyl group, further, m, n, p, q, r, t indicate an integer number of 0-4 and when are bigger than 2, R1-R6 can be different, and a is an integer of 0-10. (see formula IV) In general formula (2), R7 represents an alkyl group of carbon number 1-6 or an electron attracting group, u is an integer of 0-2.
Patent CA-2289173-A1 (CA)
Title: Process for producing ultrapure nitrogen
Inventor: KUNZ CHRISTIAN
IPC: F25J3/08
Filed: 1999-11-09
Abstract: For producing ultrapure nitrogen by low-temperature fractionation of air in a rectification system having at least one rectification column, compressed and purified feed air is conducted into a high pressure column, an oxygen-free pressurized nitrogen fraction is produced from the high pressure column, conducted into a low-pressure column and in the low-pressure column carbon-monoxide-free low-pressure nitrogen is produced as overhead gas. The oxygen-free pressurized nitrogen fraction (1) is either taken off in the liquid state from an upper region of the high pressure column or is provided from a liquid tank (22) containing stored oxygen-free nitrogen and the oxygen-free pressurized nitrogen fraction (1) is expanded into the bottom-heated low-pressure column (2). Ascending vapour in the low-pressure column (2) by mass transfer with and an ultrapure nitrogen reflux applied at the top of the low-pressure column (2) and is freed from carbon monoxide using ultrapure nitrogen, withdrawn as carbon-monoxide-free overhead gas (5) at the top of the low-pressure column (2). After a pressure increase the overhead (5), is partially liquefied, and the liquefied part (17, 18) is expanded into a bottom-heated He-Ne-H2 column (4) from which the ultrapure nitrogen (19) is withdrawn in the liquid state.
Patent CA-2289822-A1 (CA)
Title: A loading hose for use in a paper machine doctor or coating device
Inventor: RATA ILKKA
IPC: B05C11/04
Filed: 1999-11-15
Abstract: The invention relates to a loading hose for use in a paper machine doctor or coating device, which loading hose (14) located between the doctor's or coating device's blade support (11) and rotatably arranged blade holder (10), is arranged to load the doctor blade (12) of the doctor or the coating blade of the coating device. The loading hose (14) incorporates a flexible casing (17), which is pressure-resistant and of a uniform cross-section. According to the invention, the loading hose (14) includes at least one stiffening member (18) attached to the casing (17). The stiffening member (18) is arranged to lie against either the blade support (11) or the blade holder (10) .
Patent CA-2291106-A1 (CA)
Title: A process for preparing an in situ polyethylene blend
Inventor: KUPPERBLATT SANDRA ANN
IPC: C08L23/08
Filed: 1998-05-19
Abstract: A process comprising contacting ethylene and one or two alpha-olefin comonomers, each having 3 to 8 carbon atoms, with a transition metal catalyst system including a hydrocarbylaluminum cocatalyst in each of two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions. The copolymer formed in the first reactor has a flow index in the range of about 0.1 to about 75 grams per 10 minutes and a density in the range of 0.865 to 0.930 gram per cubic centimeter and the copolymer formed in the second reactor has a melt index in the range of about 0.2 to about 100 grams per 10 minutes and a density in the range of about 0.900 to about 0.965 gram per cubic centimeter, the weight ratio of the first reactor copolymer to second reactor copolymer being in the range of about 70:30 to about 30:70, and the in situ blend has a flow index in the range of about 5 to 100 grams per 10 minutes; a melt flow ratio in the range of about 10 about 100; a density in the range of 0.880 to 0.960 gram per cubic centimeter; and an Mw/Mn ratio in the range of about 2 to about 20.
Patent CA-2291162-A1 (CA)
Title: Method and apparatus for controlling the temperature of an ingot during casting, particularly at start-up
Inventor: DUBE GHYSLAIN
IPC: B22D11/22
Filed: 1998-06-12
Abstract: A method of controlling a temperature of a surface of a direct chill cast ingot cast in an open-ended mould provided with a bottom block during early stages of casting as the ingot emerges from the open-ended mould. The method involves the steps of directing a flow of a coolant onto at least one surface of an ingot emerging from an open-ended mould to impinge on the surface at a normal impingement point and to cool the surface, measuring a surface temperature on the emerging ingot at at least one measurement location which is at a predetermined position close enough to the normal impingement point to be affected by the secondary coolant, to generate a measured surface temperature, determining the displacement of the bottom block of the casting machine from its initial position at the start of the cast, corresponding to each of the surface temperature measurement, and using the measured surface temperature to control a casting variable and thereby to control the temperature of the surface. The invention also relates to apparatus for carrying out the above method and to a method of measuring the surface temperature.
Patent CA-2291970-A1 (CA)
Title: Rotating vehicle seat
Inventor: BENZ WALTER E
IPC: B60N2/14
Filed: 1999-12-10
Abstract: A seat assembly (11) is described including a seat (12), a support base (14), and an orbital guide assembly (16). The orbital guide assembly includes a first plate (30) connected to the support base, a second plate (32) connected to the seat, and an intermediate low-friction member (34) positioned between the first and second plates. The first plate includes at least two male elements (40), (42), such as guide pins. The second plate includes at least two arcuate female elements (50), (52), such as slots, adapted to engage their respective male elements. During use, the first pin acts as a first pivot point while the second pin translates along its corresponding second arcuate slot. Once the second pin completes its translation. the second pin then acts as a second pivot point while the first pin translates along its corresponding first arcuate slot. Various additional male and female-elements may be used, either as stabilizing components or as additional pivot points.
Patent CA-2293778-A1 (CA)
Inventor: GARDHAGEN PETER
IPC: G01N1/24
Filed: 1998-06-10
Abstract: L'invention porte sur un appareil, un système et un procédé de détection d'un analyte dans l'air. Cet appareil comprend un système d'échantillon d'air (1) comportant un embout (10) et un ventilateur, un premier étage (11) d'enrichissement permettant d'enrichir l'analyte et comprenant un filtre (20) d'adsorption/désorption créant un écoulement de gaz non laminaire qui permet d'adsorber l'analyte, une source de chaleur qui chauffe le filtre de manière à faire évaporer l'analyte, et un second étage (30) d'enrichissement permettant d'enrichir l'analyte gazeux et comprenant un piège à condensation (32) qui condense l'analyte, un dispositif d'extraction de la substance condensée au moyen d'un solvant et un dispositif de récupération de la solution, ainsi qu'un dispositif permettant d'analyser l'échantillon liquide récupéré à l'aide d'un système de détection analytique. D'autre part, le filtre d'adsorption/désorption créant un écoulant gazeux non- laminaire comprend un enroulement (21) de fil de résistance recouvert d'un matériau actif et deux bandes de raccordement (22) chauffant électriquement le fil métallique. Cet appareil peut être utilisé spécifiquement dans la détection, dans l'air, d'un composant gazeux d'explosifs ou de mines tel que le TNT.
Patent CA-2296881-A1 (CA)
Title: Fluid fractionator
Inventor: HILL CHARLES C
IPC: B01D53/047
Filed: 1992-02-28
Abstract: Improved apparatus for fractioning fluid mixtures, such as air, by pressure swing molecular adsorption employs a rotary distributor valve and an array of adsorber columns.      Columns are, in one embodiment, contained within a product holding tank or, in another embodiment, attached to a product tank. Valve sequences to provide a quasi steady-state flow, allowing optimization of adsorption/desorption cycles, and eliminating most of the valves, switches and plumbing usually required.
Patent CA-2299668-A1 (CA)
Title: Device to assist in the identification of equipment sub-assemblies, particularly aircraft sub-assemblies
Inventor: TERME JEAN-LOUIS
IPC: G06K7/00
Filed: 2000-03-02
Abstract: The present invention relates to a device for aiding the identification of subassemblies of an item of equipment (E) including a number of subassemblies and equipped with a storage unit (US) storing references. According to the invention, said device includes a memory (7) recording the references stored in the storage unit (US), an external electrical power supply means (9) for the memory (7), a means (13) of isolation both electrically and in terms of software processing, and a connection means (10) connected to the memory (7) and to which can be connected a reader (L) capable of reading and telling back the references which are recorded in the memory (7) and which relate to said subassemblies of the item of equipment (E).
Patent CA-2301576-A1 (CA)
Title: A method and an apparatus for manufacturing an electrical insulator
Inventor: JOHANSSON LARS B
IPC: B29C48/151
Filed: 1998-08-27
Abstract: The invention concerns a method for manufacturing an electrical insulator that includes a body (1) and a coating (5, 5a) of insulating material arranged on the body (1) where the coating is applied onto the body in a screw-like form or a helical-like form, whereby the coating is applied by extrusion directly on the body (1). In this way, the build-up trapped pockets of air between the applied coating and the body (1) is prevented, and good adhesion is achieved. The invention also concerns an apparatus for manufacturing an insulator as well as the use of the said method or apparatus for the manufacturing of a high voltage insulator.
Patent CA-2302893-A1 (CA)
Title: Temperature responsive switch with shape memory actuator
Inventor: EDER PHILIP B
IPC: H01H37/32
Filed: 2000-03-29
Abstract: A temperature actuated switch having a resilient switch blade that is movable between open and closed positions and extends perpendicular to an elongated actuator of shape memory alloy. The actuator has an elongated deformed shape at normal temperatures and a contracted recovered shape at an elevated temperature. An end portion of the actuator is attached to the switch blade to provide movement of same between open and closed positions as the actuator changes between its deformed and recovered shapes.
Patent CA-2302987-A1 (CA)
Inventor: BUMBARGER THOMAS H
IPC: B32B7/027
Filed: 2000-03-22
Abstract: A multi-layered composite comprising a protective layer, a retaining layer, a conductive layer and a filler layer intermediate the retainer and conductive layers. The filler layer is impregnated with liquid absorbent particles and/or fibers. An optional protective layer having specific characteristic for protection against extreme temperatures, physical impacts and the like is specifically disclosed for use in combination with the retainer, filler and conductive layers. The protective layer provides additional protection of the person from catastrophic events such as exposure of a person to fire and/or severe impact such as may be caused by gunfire.
Patent CA-2304456-A1 (CA)
Title: Prepolymer compositions comprising an antimicrobial agent
Inventor: ASKILL IAN N
IPC: A61K9/70
Filed: 1998-10-08
Abstract: Disclosed are biocompatible prepolymer compositions comprising a compatible antimicrobial agent and, in particular, a compatible iodine containing antimicrobial agent. These compositions provide for in situ formation of an antimicrobial polymeric film on mammalian skin.
Patent CA-2304685-A1 (CA)
Title: Process improvement to produce low color trimethylolpropane
Inventor: SEAMAN GEORGE C
IPC: C07C31/22
Filed: 1998-09-29
Abstract: Disclosed is a process for acquiring crude trimethylolpropane (TMP) of low reacted color. TMP is generally prepared by the condensation of n-butyraldehyde and formaldehyde in an alkali solution. The mixture is then concentrated and placed through extractor.  It has been found that a high concentration of low color TMP is present in the extractor and may be obtained by taking a slip stream of hot organic/water/TMP from the extractor and allowing the mixture to cool and phase separate. Upon separation of the phases, TMP generally having an acid wash color of about or less than 5 GU is recovered from the water phase. Disclosed is use of a single and multistage extractor.
Patent CA-2306647-A1 (CA)
Inventor: LOWERY GARY L
IPC: A61F2/30
Filed: 1998-10-30
Abstract: Prothèse de disque intervertébral servant à remplacer un disque intervertébral endommagé de la colonne vertébrale (16) d'un être humain et comprenant un corps (10) possédant une surface supérieure (52) conçue pour venir en contact avec la vertèbre supérieure (12) et une surface inférieure (152) conçue pour venir en contact avec la vertèbre inférieure (14). Ce corps (10) comporte une saillie (62, 162) en forme de croissant s'étendant depuis l'une des surfaces supérieure et inférieure (52, 152) du corps afin de loger dans une cavité de la vertèbre contiguë (12, 14).
Patent CA-2310528-A1 (CA)
Inventor: MIGNONE GIUSEPPE
IPC: A22C11/00
Filed: 2000-06-02
Abstract: Device for binding roasts, sausages and the like, comprising a vertical rod having a clamp and a threaded rod with a control knob for fixing the vertical rod to the table, wherein: a concave element, suitable for containing the "roasts" to be bound by the elastic rings, is fixed on the top of the vertical rod; below being provided a parallel rod iron having an invitation bending; below said element and relative rod iron being provided a device carrying the elastic rings, i.e. three rod irons forming together a bracket, arranged two in the upper part and one in the lower, between said rod irons being provided a fourth rod iron, as an independent spring, for maintaining tidy said elastic rings.
Patent CA-2315556-A1 (CA)
Inventor: CONRAD WAYNE ERNEST
IPC: G01N27/04
Filed: 2000-08-09
Abstract: This invention relates to a thermoelectrical method and apparatus for measuring the concentration of a gas, and, in particular, a reactive gas (i.e. gasses that may be reacted to produce by-products and which produce heat or remove heat from a system as a result of the reaction) using the electrical resistance of a member upon exposure to the reactive gas. Examples of such gases include, ozone, oxygen, nitrogen or oxides of nitrogen, and the like. In the instant invention, a thermoelectric means is provided to generate a signal which is associated with a display to provide a readout of the concentration of the gas.
Patent CA-2318458-A1 (CA)
Title: Power converter
Inventor: BODSON JEAN-MARIE
IPC: H02M7/00
Filed: 1999-01-26
Abstract: The invention concerns a power converter powered by voltage successive feed (Ucat) consisting of insulated gate bipolar transistor (IGBT) static switches, in the form of at least an IGBT module (10) directly fixed on a cooling block (14) which is itself connected to fins (0) or the like. The invention is characterised in that an insulation (13) is provided between the cooling block (14) and the fins (0) and the cooling block (14) whereon the IGBT module(s) (10) is/are fixed is connected to a potential intermediate between the fins (0) potential and the peak of the power converter successive feed (+Ucat).