baber/WOPTO huggingface dataset:
Patent CA-2199530-C (CA)
Inventor: DUFOUR PASCAL
IPC: C01F7/78
Filed: 1997-03-07
Granted: 2001-02-06
Abstract: Aluminium polychlorosulphates of formula Al(OH)aClbYc/dM'Cl2/eM"Cl (I), in which Y = an anion with a valency of 2, such as SO4<2->, M' = a cation with a valency of 2, such as an alkaline earth, M" = a cation with a valency of 1, such as an alkali metal or ammonium, a, b, c and d are whole numbers or fractions and are not zero and e = 0, a whole number or a fraction such that 1.8 <a< 2.25, 0.001 <c< 0.150, b = 3-2c-a and 2d+e+b ≤ 3, and having a basicity  beta  of 60-75 % where  beta  = 100 x (3Al + 2M' + M" - 2Y - Cl)/3Al in which Al, M', M", Y and Cl are expressed in moles, are prepared by contacting a basic compound of an alkali metal, preferably in aqueous solution, and at least one basic compound of an alkaline earth metal or a halide of an alkaline earth metal, in aqueous suspension or as a powder, in the presence of sulphate ions, with a solution of basic aluminium chloride of formula Al(OH)xCly in which x = 0.1-1.5 and y = 3-x, at a temperature of from ambient temperature e (ca. 25 degrees C) to 70 degrees C, then after basification has been accomplished the reaction mixture is heated at a temperature of 60-95 degrees C for a period which is dependent on the cooking temperature, i.e. for 3-20 (5- 9) hours at 60 degrees C or for 5-15 (7-10) minutes at 95 degrees C.
Patent CA-2201074-C (CA)
Inventor: KAYAHARA TOSHIHIRO
IPC: F04C5/00
Filed: 1997-03-26
Granted: 2001-09-04
Abstract: A liquid feeding apparatus quantitatively feeds a liquid by pressing and clogging an elastic tube between a press roller and an arc-shaped guide portion through rotational motion of the press roller. The liquid feeding apparatus includes a main unit in which the press roller is provided, and a liquid cassette which accommodates a liquid cartridge. One end of the elastic tube is connected to a reservoir for the liquid to be fed, and the other end is connected to a check valve. The liquid cassette is removably fitted to the liquid feeding apparatus so that the elastic tube is subject to pressing action of the press roller.
Patent CA-2203547-C (CA)
Title: Optical switch
Inventor: DAVIES DAVID ARTHUR OWEN
IPC: H04Q3/52
Filed: 1996-05-20
Granted: 2003-02-18
Abstract: Optical signals used for telecommunications in time division multiplexed format are processed to remove channels for local demodulation and to replace the removed channels with locally modulated data. The received signals (15) are subjected to a further wavelength modulation (13) so that signals in selected channels are given distinctive wavelengths. After wavelength modulation the time division multiplexed signals are separated using wavelength sensitive splitters (21, 24) and the various channels are sent their correct destinations by wavelength selection. In a preferred embodiment one channel is selected and given a distinctive wavelength and all the non-selected channels retain their original wavelength. The channels with the original wavelength are provided to an output terminal (25) for onward transmission whereas the selected channel is provided (26) for local demodulation. The invention is particularly suitable for use with signals within a bit interleaved version of a time division multiplex.
Patent CA-2206368-C (CA)
Title: Calling party identification announcement service
Inventor: REID JOHN BRIAN
IPC: H04Q3/72
Filed: 1997-05-28
Granted: 2000-04-18
Abstract: Calling party identification announcement service (CPIAS) provides an announcement of the caller's name to a called party, so that the called party may accept of reject a call.  This invention relates to arrangements for providing CPIAS using centralized announcement synthesis apparatus, under the control of a data base (in accordance with the principles of intelligent networks), within the basic call processing arrangements of the public switched telephone network, without requiring users of the services to have two telephone numbers.  Billing entries for the use of the announcement service are made under the control of the terminating switch so that these entries can be readily combined with other billing entries for the called party in order to generate a bill for that party.
Patent CA-2213366-C (CA)
Inventor: MULLER FRANK
IPC: A61C5/35
Filed: 1997-08-19
Granted: 2002-12-31
Abstract: A system for receiving a tooth replacement part and placing the tooth replacement part into a patient's mouth, with the tooth replacement part having a securing projection, includes a holder having at least one recess and an adapter having a connecting portion detachably connected to the at least one recess of the holder. The adapter has a cutout for positive-lockingly receiving the securing projection of the tooth replacement part. A packaging system for the tooth replacement parts includes a container. An adapter is provided for each tooth replacement part. The adapter has a cutout for receiving the securing projection of the tooth replacement part and has a connecting portion opposite the cutout. The container has a removal opening for selectively allowing access to the connecting portion of the adapter placed into the container. The connecting portion is detachably connectable to the holder insertable through the removal opening.
Patent CA-2215815-C (CA)
Title: Educational doll with changeable face elements
Inventor: PEARSON LINDA C
IPC: A63H3/36
Filed: 1997-09-18
Granted: 2006-06-06
Abstract: A doll is described having changeable face elements. The doll includes (i) a soft, stuffed doll including a body portion, a pair of arms extending from the body portion, a pair of legs extending from the body portion and a head portion connected to the body portion via a neck portion. The head portion has a face portion surrounded by a projecting fabric fringe and the face portion has fixed thereto at spaced locations adjacent this fringe a plurality of fastener members comprising loop portions of loop and hook fasteners, such as Velcro® fasteners, these loop portions being adapted to represent locks or curls of hair on the face of the doll. The doll also include at least one attachable face element adapted for attachment to the face portion. This face element has fixed to the back face thereof a plurality of fastener members comprising hook portions of hook and loop fasteners, these hook fasteners being positioned to mate with the loop fasteners on the doll face.
Patent CA-2233879-C (CA)
Inventor: FLORU FRED
IPC: G01R15/18
Filed: 1996-10-02
Granted: 2003-04-15
Abstract: A current sensor (10) for detecting AC current through a load impedance (14) of an electrical circuit. Sensor components are fabricated within a multilayer board (fig. 3). The sensor includes a transformer circuit including a primary coil (32) coupled in series with the current path (16, 18) of the electrical circuit. The primary coil (32) includes current path elements (20A, 20B) in the form of conductive strips. The transformer secondary (30) comprises first and second electrically conductive coils (30a, 30b) inductively coupled to the current path. The secondary coils are electrically connected in series with one another, so that voltages generated across the coils in response to current in the current path are additive, while interference voltages which are induced in the coils by the presence of external magnetic fields or cross talk between adjacent sensors on the same board are cancelled.
Patent CA-2238436-C (CA)
Inventor: RIGG RICHARD J
IPC: C12N7/00
Filed: 1996-12-13
Granted: 2011-08-23
Abstract: This invention provides a method for obtaining a recombinant retroviral packaging cell capable of producing retroviral vectors as well as the recombinant packaging cell obtained by the method. Also provided is a method of producing recombinant retroviral particles obtained by introducing into the packaging cells obtained according to the methods disclosed herein, a recombinant retroviral vector and propagating the resulting producer cells under conditions favorable for the production and secretion of retroviral vector supernatant. The retroviral supernatants produced by these methods also is claimed herein. This invention further provides a method for screening retroviral vector supernatant for high transduction efficiency and methods for producing retroviral vector supernatant for transducing cells with high efficiency in gene therapy applications.
Patent CA-2241875-C (CA)
Title: Process and device for determining the level of a fluid using ultrasonic pulses
Inventor: EISENTRAUDT MICHAEL
IPC: G01F23/296
Filed: 1996-12-17
Granted: 2002-09-17
Abstract: In order to improve the measuring accuracy of a liquid level (H) in a container (2) from an echo time measurement of ultrasonic pulses and a mean sound velocity (.dottedcircle.), it is provided to extrapolate the mean sound velocity (.dottedcircle.) from at least two reference sound velocities in the liquid (90). It is possible in this way to achieve a measuring accuracy of less than a millimetre independently of the liquid level (H).        Specified for carrying out the method is a device (1) having a main measuring path, at least one device for transmitting and receiving ultrasonic pulses, at least two reference paths for determining sound velocities, and having a computer unit (50), the computer unit (50) extrapolating to the mean sound velocity from the (.dottedcircle.) sound velocities.
Patent CA-2247210-C (CA)
Inventor: ARRIETTA VICTOR
IPC: B22F1/17
Filed: 1997-02-21
Granted: 2008-06-10
Abstract: The invention relates to the encapsulation of Geldart class C substrate powders with a coating of metal, binder, or sintering aid. Encapsulation is achieved using chemical vapor deposition techniques in a recirculating fast-fluidized or turbulent fluidization flow bed reactor (10). Thin, smooth, generally uniform, fully encapsulating coatings are produced on the fine substrate particles. The coated Geldart class C particles, and products made therefrom, exhibit excellent improved physical properties.
Patent CA-2252357-C (CA)
Inventor: DYKE PETER JOHN
IPC: H04L5/02
Filed: 1998-11-04
Granted: 2004-09-21
Abstract: To accommodate the overlay of broadband information over narrowband signals while reducing cross-talk in upstream and downstream directions, different baseband line codes are used to modulate respective upstream and downstream transmissions on a common wireline communication resource, such as a twisted copper-pair. In this way, filtering components located at each end of a connection can reject cross-talk based upon dissimilar signal characteristics that arise between wanted broadband signals having a first baseband line code and spectrally-shifted cross-talk emanating from interfering broadband signals having a different baseband line code.
Patent CA-2254135-C (CA)
Title: Service control point congestion control method
Inventor: ATAI AMIR
IPC: H04M7/00
Filed: 1997-01-17
Granted: 2002-04-09
Abstract: In an advanced intelligent network, a method of using a Service Control Poin t (22) for managing the overloading of calls, for example, from calling partie s in LATA A (20) associated with Service Switching Points SSP 1 - SSP n to a single telephone number (operators) in LATA Z (24) associated with SSP m (40 ). The method enables Service Control Point (22) to service a small percentage of the time during measurement intervals in order to receive Termination Notification messages. The Service Control Point (22) then determines from t he content of the Termination Notification messages for each measurement interval, the rate of attempted calls and the fraction of the total calls th at were incomplete (i.e., erroneous or received a busy signal) for a telephone number n, and invokes Automatic Code Gapping for the number n where both the  attempted call rate and the incomplete calls exceed a predetermined threshol d. If the threshold continues to be exceeded in subsequent measurement interval s, a larger gap interval for the Automatic Code Gapping can be set, and the process repeated until the proper gap is found.
Patent CA-2262279-C (CA)
Title: Down hole, hydrodynamic well control, blowout prevention
Inventor: HILL GILMAN A
IPC: E21B21/08
Filed: 1999-02-22
Granted: 2005-05-17
Abstract: The system and method of the present invention permits control of down hole fluid pressures during under balanced drilling, tripping of the drill string, and well completion to substantially avoid "killing" of the well and thereby damaging the producing formations in the well bore. The system and method utilizes separate and interconnected fluid pathways for introducing a downwardly flowing hydrodynamic control fluid through one fluid pathway and for removing through the other fluid pathway a commingled fluid formed by mixing of the hydrodynamic control fluid and the well bore fluids flowing upwardly in the well bore.
Patent CA-2266173-C (CA)
Title: Stabilized aqueous diazo solutions
Inventor: ZIMIN AL SR
IPC: G01N31/22
Filed: 1999-03-18
Granted: 2003-10-28
Abstract: A stabilized aqueous solution of a diazo compound has the formula: (see.fig I) where X1 is selected from nitro and chloro, X2 is selected from nitro, chloro and nothing, and Y is an acid-derived anion. The solution has a pH of about 1.5 or below and a diazo concentration of about 2 wt% or less. The solution is useful as an extractant/developer for petroleum fuel markers.
Patent CA-2269014-C (CA)
Title: Film de polyethylene thermoretractable de haute clarte et a ouverture facile pour l'emballage de groupements de produits
Inventor: GRANGETTE MICHEL
IPC: B65D71/08
Filed: 1999-04-13
Granted: 2008-04-08
Abstract: Le film selon l'invention comprend une couche centrale représentant au moins 30% de l'épaisseur totale du film et constituée d'un mélange comprenant au moins 50% en poids de polyéthylène radicalaire et de matière plastique ionomérique, le complément étant du polyéthylène linéaire classique, prise en sandwich entre deux couches externes constituées d'un mélange comprenant plus de 50% en poids de polyéthylène linéaire, le complément étant du polyéthylène radicalaire. Application : à l'emballage de groupements de produits.
Patent CA-2275162-C (CA)
Title: Bph ablation method and apparatus
Inventor: STRUL BRUNO
IPC: A61B19/00
Filed: 1994-05-13
Granted: 2000-11-07
Abstract: A method and an apparatus (14) is disclosed for delivering controlled heat to perform ablation to treat the benign prosthetic hypertrophy or hyperplasia (BPH). According to the method and the apparatus (14), the energy is transferred directly into the tissue mass (6) which is to be treated in such a manner as to provide tissue ablation without damage to surrounding tissues. Automatic shutoff occurs when any one of a number of surrounding areas to include the urethra (2) or surrounding mass or the adjacent organs (6) exceed predetermined safe temperature limits. The constant application of the radio frequency energy over a maintained determined time provides a safe procedure which avoids electro-surgical and other invasive operations while providing fast relief to BPH with a short recovery time. The procedure may be accomplished in a doctor's office without the need for hospitalization or surgery.
Patent CA-2296043-C (CA)
Title: Adhesive composition for hot bonding and bonding method using same
Inventor: BERTHIER JEAN-MARC
IPC: C08L79/08
Filed: 1998-07-27
Granted: 2008-12-16
Abstract: The invention concerns an adhesive composition (34) for hot bonding polymer or metal substrates (32, 33), comprising at least one polymer material, at least one plasticizing and wetting agent, and, optionally, at least a solvent, and its working temperature is lower than the degradation temperature of the substrates (32, 33) and lower than the melting temperature of the polymer material. The invention is useful for producing sandwich structures of aeronautical quality, in particular for helicopter rotors.
Patent CA-2297311-C (CA)
Inventor: KATOH KOHTARO
IPC: G03C1/81
Filed: 1994-02-07
Granted: 2002-11-05
Abstract: Disclosed is a base film for a photographic film, which: (a) has a refractive index (nz) in the thickness direction of at least 1.498; (b) has a haze value of 2.0% or less; (c) has a tan.delta. value in one direction at 80°C by tensile viscoelasticity at 0.05 Hz, of 0.09 or less; (d) has an anti-curling ratio at 70°C of at least 45%; (e) has a thickness in the range of from 40 to 120 µm; and (f) is formed of a laminated film formed of a first layer of polyethylene-2,6-naphthalenedicarboxylate which may contain less than 0.003% by weight of inert fine particles having an average particle diameter of 0.01 to 1.5 µm and a second layer of polyethylene-2,6-naphthalenedicarboxylate containing 0.003 to 0.5% by weight of inert fine particles having an average particle diameter of 0.01 to 1.5 µm, the second layer having a thickness of 10 µm or less. This base film has various performances such as anti-curling properties, transparency and lubricity, suitable for use in a photographic film.
Patent CA-2297539-C (CA)
Title: Frame assembly and light for an electrical wall conduit
Inventor: CUNNINGHAM VERN
IPC: H01R13/70
Filed: 2000-01-31
Granted: 2007-04-03
Abstract: A frame assembly for covering a wall conduit having a connection to electrical power and a component associated with the wall conduit requiring access through the frame assembly is provided. The frame assembly comprises a light powered by an electrical circuit connected to the connection and a frame for housing the light. The frame has an opening allowing access to the component through the frame, a side and an aperture in the side allowing the light to illuminate a space outside the frame assembly through the aperture.
Patent CA-2299889-C (CA)
Inventor: WU WILLIAM
IPC: A23G3/54
Filed: 2000-03-01
Granted: 2009-05-26
Abstract: The invention relates to a method and apparatus for producing a laminated edible product such as a candy product. This method includes the steps of extruding from the exit port of a coaxial die a thin strip of a first fluid material encased in a layer of a second fluid material, depositing the thin strip on a support, and superimposing additional thin strip on top of the first thin strip. The invention also relates to an edible product prepared by this method.
Patent CA-2300283-C (CA)
Title: Ink supply apparatus for printing press and ink tray mounted on the same apparatus, and method for mounting contamination preventive surface cover to ink tray
Inventor: FUGIMOTO SHINICHI
IPC: B41F31/04
Filed: 2000-03-06
Granted: 2005-10-25
Abstract: The present invention provides an ink supply apparatus for a printing press in which the ink supply amount from an ink fountain to an ink fountain roller is controlled by regulating a gap between ink blades and the ink fountain roller, wherein an integral type ink tray comprising a bottom portion covering portions of the upper faces of the ink blades excluding the distal end portions thereof and side portions covering the inside surfaces of side plates is provided, a first seal member is interposed between the inside surface of the side plate and the side portion, and a second seal member in slidable contact with the ink blades is interposed between the ink blades and the bottom portion of the ink tray.
Patent CA-2305214-C (CA)
Title: Ferme-porte
Inventor: MIGCHIELSEN ROGER
IPC: E05F3/22
Filed: 1999-05-06
Granted: 2006-06-27
Abstract: L'invention vise à améliorer un ferme-porte (1) présentant un corps (2) allongé et réalisé d'une seule pièce, de manière à obtenir une unité compacte et esthétique, pouvant être produite avec une quantité minimale de matériau. A cet effet, les faces latérales (5, 6) du ferme-porte se rejoignent de manière courbée et/ou inclinée, à partir d'un côté inférieur (4) jusqu'au niveau d'une face supérieure (3) du ferme-porte (1), et des blocs-paliers (11, 12) sont formés dans une zone comprise entre leurs faces frontales (13, 14), s'élevant à partir du côté inférieur (4) du corps (2), et les faces latérales (5, 6).
Patent CA-2309970-C (CA)
Inventor: GRAM ANKER
IPC: F02M21/02
Filed: 1998-12-14
Granted: 2007-03-13
Abstract: The invention relates to an apparatus and method for supplying high pressure gaseous fuel from a storage vessel to an internal combustion engine of a vehicle, or for other uses. A reverse cascade fuel supply apparatus for a vehicle comprising: (a) a storage tank for storing high pressure gaseous fuel; (b) an intermediate pressure accumulator for storing high pressure gaseous fuel, connected by a pipe to the storage tank; (c) a high pressure accumulator for storing high pressure gaseous fuel connected by a pipe to the intermediate accumulator and by a pipe to the storage tank; (d) a gaseous fuel compressing intensifier connected by a pipe to the storage tank, the intermediate pressure accumulator and the high pressure accumulator; and (e) a plurality of on-off pressure controlled valves located in the pipes connecting the storage tank, the intermediate accumulator, the high pressure accumulator and the intensifier, for enabling selective pumping to and withdrawal of high pressure gaseous fuel from the storage tank, the intermediate accumulator, the high pressure accumulator, the intensifier or the engine, according to a reverse cascade fuel supply program.
Patent CA-2317194-C (CA)
Title: Query engine and method for querying data using metadata model
Inventor: CAZEMIER HENK
IPC: G06F17/30
Filed: 2000-08-31
Granted: 2009-07-21
Abstract: A query engine formulates a data source query to obtain data from one or more data sources. The query engine uses a metadata model containing model objects that represent the data sources. The metadata model has a data access layer, business layer and package layer. The model objects of the business layer are constructed based on the model objects contained in the data access layer. The query engine interacts to the metadata model at the business layer, and formulates a data source query based on a query specification provided by a client application. Thus, the query engine allows use of different type of client applications to obtain reports from one or more data sources.
Patent CA-2317681-C (CA)
Title: High-efficiency power generating method
Inventor: KOBAYASHI KAZUTO
IPC: F23K5/08
Filed: 2000-09-06
Granted: 2006-05-09
Abstract: In a high-efficiency power generating method to generate electric power by an exhaust gas re-combustion system using at least a gas turbine, a boiler, and a steam turbine, crude oil or heavy oil is heated with steam obtained from the boiler; the crude oil or heavy oil is distilled under reduced pressure; and electric power is generated by using an obtained light oil fraction as a gas turbine fuel and by using a heavy oil fraction as a boiler fuel.
Patent CA-2318897-C (CA)
Inventor: WESSON DAVID S
IPC: E21B43/116
Filed: 1999-04-26
Granted: 2008-03-25
Abstract: A liner for a explosive shaped charge, such as those used in perforating operations in oil and gas wells, is formed from a powdered metal mixture that includes molybdenum. The molybdenum allows a higher density liner to be formed to create denser jets for achieving deeper penetration, but without the negative effects that often accompany the use of higher density materials. The molybdenum may be used in the amount of 0,5 % to 25 % by weight of the metal mixture, with tungsten and other constituents forming the remainder of the mixture.