baber/WOPTO huggingface dataset:
Patent CA-2200961-C (CA)
Title: Process and apparatus for the manufacture of steel from iron carbide
Inventor: GEIGER GORDON H
IPC: C21C5/56
Filed: 1995-12-05
Granted: 2001-04-24
Abstract: A two stage reaction for the production of steel from iron carbide is carried out in two separate but interrelated reactors (1, 36). In the first reactor (1), iron carbide, with slag formers, is fed into a feed end (2) and the reaction is well-mixed by the vessel geometry, the stirring action of below-surface injection of oxygen and iron carbide feed, and the evolution of gases from the liquid metal bath (9). The product, containing about 0.5-2 % carbon, is fed into the second reactor (36) where it is refined with subsurface-injected oxygen. The second reaction is autogenous, and the evolved carbon monoxide is fed to the first reactor (1) where it is burned with oxygen in a foamy slag, which, with post-combustion burning in the slag of CO evolved in the first reactor (1), and with iron carbide preheating with the sensible heat of the off-gas from the first reaction, makes that reaction also essentially autogenous.
Patent CA-2210110-C (CA)
Title: Manganese dry battery
Inventor: ASHIHARA RYOHEI
IPC: H01M4/42
Filed: 1997-07-10
Granted: 2004-06-22
Abstract: A manganese dry battery includes a cathode manganese dioxide, an anode zinc can and a separator, wherein the anode zinc can is made of a zinc alloy free from lead and containing 0.003 - 0.5 wt% of silver.      Even without heavy metals such as Hg, Cd and particularly Pb, the zinc alloy anode can has a corrosion-resistant property and mechanical strength equivalent to or greater than those of the conventional zinc anode can, thereby giving a low pollution zinc-carbon battery having a storage characteristic equivalent or superior to that of the conventional zinc anode can.
Patent CA-2213765-C (CA)
Inventor: GENZ OTTO
IPC: F04D15/02
Filed: 1997-08-20
Granted: 2002-10-01
Abstract: Liquid level-controlled submersible motor-driven pumps use so-called float switches which are capable of movement in the direction of buoyancy and enable or disable the power supply to the pump motor via a switching element, depending on their position. To this end,  it is customary to use float switches which are capable of moving roughly along a reference circle on the pump housing with the aid of flexible cables. In another configuration, floats are used which actuate a switch located in the pump housing. These pumps are consequently comparatively expensive and difficult to test, in that there may be an electrical or mechanical fault either in the pump circuitry or in the pump motor itself. In the case of the pumps with floats moving along a reference circle, free movement of the float can be obstructed by objects in the liquid or by the shaft wall, the result being that the pump is no longer switched on and off automatically. An electric submersible motor-driven pump (1) is therefore proposed, in which the float (8) and the switch (10) are accommodated in a separate component (6), which can be attached to the housing (2) of the submersible motor-driven pump (1) in detachable fashion and where the switch (10) interacts with a switchable adapter plug located outside the medium to be conveyed, between a power source and the pump motor (3). In this way, the pump can be converted to automatic control, in addition to which the function can be monitored more easily and free movement of the float is guaranteed.
Patent CA-2220923-C (CA)
Title: Process of high purity albumin production
Inventor: GOODEY ANDREW ROBERT
IPC: A61P17/02
Filed: 1996-02-29
Granted: 2003-01-07
Abstract: A process is provided for the preparation of albumin which has extremely low  levels of or is essentially free of colorants, metal ions, human proteins, host proteins, fragments of albumin, polymers or aggregates of albumin and viruses, and which is essentially non-glycated, relatively high in free thio l and with an intact C-terminus. The process comprises passing albumin (preferably expressed and secreted by transformed yeast) through positive mo de cation exchange and then positive mode anion exchange chromatography. Other steps may also be employed, for example ultrafiltration, gel permeation chromatography, affinity chromatography binding the albumin (for example usi ng blue dyes) and affinity chromatography binding contaminants (for example usi ng an aminophenylboronic acid resin). Elution of albumin, with a compound havin g affinity for albumin, from a material having no specific affinity for albumi n is also disclosed, as is removal of ammonium ions with a counter-ion.</SDOAB >
Patent CA-2221405-C (CA)
Title: Foam distribution jacket and method of insulating a hot water heater with expandable foam material
Inventor: LEWIS BRIAN M
IPC: F24H1/18
Filed: 1997-11-18
Granted: 2005-11-15
Abstract: A foam distribution jacket (10) for containing an insulating expandable liquid foam mixture (44) prior to expansion into a space (17) between a hot water tank (22) and an outer casing (29) secured thereabout. The jacket (10) comprises a pair of sheets (11-12) which are superimposed to define a bottom trough section (13) having a straight bottom edge (15) and opposed end edges (16). A seal (17) is formed along the straight bottom edge and the opposed end edges to form the trough (13) and to interconnect the sheets (11-12). The pair of sheets (11-12) converge to a crest portion (19) at a top end section (14) thereof. An attachment hole (20) is provided in the crest of an inner one of the pair of sheets (11-12) and is adapted to attach the jacket (10) in a depending manner from a nipple (21) in a top wall (48) of a hot water tank (22). The method of insulating a surrounding space (27) formed between the hot water tank (22) and the outer casing (29) using the foam distribution jacket (10) is also described.
Patent CA-2222670-C (CA)
Title: Monitoring of nonlinear effects
Inventor: ROBERTS KIM BYRON
IPC: H04B10/08
Filed: 1997-11-26
Granted: 2003-11-18
Abstract: An optical transmission system comprises a number of optical terminals connected by optical waveguides such as optical fibres. Nonlinear processes occurring within an optical transmission medium of the waveguide or within the optical terminals is detected by a monitor which outputs monitored data representative of the products of nonlinearity. The data is used to control the power of the optical signal such that power is regulated to avoid the onset of the nonlinear process. The data may also be used to indicate an alarm condition to an operator. A monitor for four wave mixing detection utilises dither signals applied to respective frequency components of a wavelength division multiplexed signal, products of the four wave mixing process being detected in the monitor by correlation between a sample of a received optical signal and reference data representative of dither induced modulation in the four wave mixing product. Mutually orthogonal dither wave forms are derived from pseudo-random sequences and applied as low frequency modulations to transmitted optical signals. Such monitors allow optical power to be controlled and assist in locating defective equipment requiring remedial action. The invention has application to long haul optical transmission systems.
Patent CA-2225744-C (CA)
Inventor: KERFOOT WILLIAM B
IPC: C02F3/22
Filed: 1996-11-15
Granted: 2006-11-07
Abstract: Procédé de barbotage in-situ actif faisant appel à un gaz composé de plusieurs éléments permettant une biorestauration dont le but est d'éliminer les contaminants d'une formation contenant une nappe d'eau souterraine ou d'une zone d'aération sensiblement humide, le gaz composé de plusieurs éléments étant contenu dans des bulles. Dans ledit procédé, on introduit un agent oxydant comprenant de l'ozone mélangée à l'air ambiant pour constituer un gaz composé de plusieurs éléments encapsulé dans des bulles microfines produites dont la taille est définie par des diffuseurs microporeux et une chambre à bulles, ce dispositif permettant la régulation de la taille des bulles. Ledit procédé ne requiert pas l'application d'un vide pour l'extraction des produits du strippage ou des sous-produits de la biodégradation, les diffuseurs formant des bulles microfines contenant un gaz composé de plusieurs éléments qui oxyde, par strippage et décomposition, les hydrocarbures chlorés, les élimine de la zone aquifère et de la formation saturée environnante, et les transforme en sous-produits inoffensifs. Ledit procédé permet d'améliorer et d'accélérer la biorestauration d'un site.
Patent CA-2229922-C (CA)
Title: Cellular communications system
Inventor: LUCAS ROBERT EDWARD
IPC: H04M3/436
Filed: 1996-08-16
Granted: 2003-07-08
Abstract: In a cellular communications system comprising a plurality of zones, details of authorized services for each mobile terminal are stored at a central register. The central register is accessed on entry of a visiting mobile terminal into that zone whereby to retrieve the service details for that mobile, the retrieved details are stored at a local register and compared with a set of services capable of being supported within the zone, and providing to the terminal information relating only to those services that are both authorized for use by the terminal and capable of support within the zone. In a preferred embodiment, information relating to a service which cannot be supported in a particular zone is not forwarded to the local register thus avoiding message rejection by the local register.
Patent CA-2231592-C (CA)
Inventor: AHUJA AVINASH K
IPC: F25C1/14
Filed: 1996-09-11
Granted: 2006-11-14
Abstract: Flake freezing machine (100) includes an evaporator (200) having a cast aluminum cylindrical structure (210) with an embedded stainless steel helical tubing assembly (220). Refrigerating fluid is circulated through the tubing assembly (220) to cool the inner surface (211) sufficiently to freeze a liquid. Positioned inside the cylindrical structure (210) is a rotatable shaft (130), which supports a liquid distribution pan (150) having radially extending nozzles (154) for distributing the liquid onto the inner surface (211) of the cylindrical structure (210) so as to freeze it as a frozen sheet and a blade member (170) for removing the frozen sheet in the form of frozen flakes. A flake freezing system (1000) is also provided, which includes the flake freezing machine (100), as well as an accumulator (400), a compressor (500), a condenser (600), and a heat exchanger (800). Operation of the system (1000) is controlled automatically by a controller (900).
Patent CA-2233206-C (CA)
Inventor: SCHENA BRUCE M
IPC: H04L29/06
Filed: 1996-09-25
Granted: 2001-04-03
Abstract: A method and apparatus for providing safe and low-cost force feedback peripherals for consumer applications. A device microprocessor (26) local to an interface device (14) is coupled to the host (12) by a first interface bus (24). The microprocessor receives host commands from the host computer on the first interface bus, such as an RS-232 interface, and commands an actuator (30) to apply a force to a user object (22), such as a joystick, in response to host commands. A sensor (28) detects positions of the user object and outputs signals to the host on a second interface bus (25), such as a PC game port bus, separate from the firt bus. A safety switch (41) of the present invention disables the actuator when the interface device is not in use and enables the actuator when an amount of weight over a predetermined amount is placed on the joystick created by a user grasping the joystick.
Patent CA-2234500-C (CA)
Inventor: GUEYNE JEAN
IPC: A61P19/02
Filed: 1998-03-18
Granted: 2009-08-25
Abstract: Compositions pharmaceutiques agissant par inhibition des sérines protéases comprenant, en association avec tout excipient approprié, au moins un composé de formule générale (I) suivante : R6R7P(O)- (CHR5)m - (CHR4)n- Si (OR1)(OR2)(R3) (I) dans laquelle : R1 et R2 chacun indépendamment représentent un atome d'hydrogène ou un groupement alkyle, R3 représente un groupement hydroxyle ou un groupement alcoxy ou un groupement alkyle, R4 et R5 représentent chacun indépendamment un atome d'hydrogène, un groupement hydroxyle, un groupement alkyle ou une fonction acide carboxylique, R6 et R7 représentent chacun indépendamment un groupement alcoxy, n est un entier supérieur ou égal à 0 et inférieur ou égal à 4 m est un entier strictement supérieur à 0 et inférieur ou égal à 3.
Patent CA-2236028-C (CA)
Inventor: DUYNSLAGER LIEVEN
IPC: B65D85/00
Filed: 1996-11-04
Granted: 2006-02-14
Abstract: A particular object of the invention is to provide a telescope-type capsule, e.g., for pharmaceutical use or the like, consisting of a cap and a body, said cap having four to six elongated, flat protrusions on its inner wall with a depth of from 30 to 100 µm, preferably 50 to 80,µm, and a length of 1.5 to 3 mm, and a narrowing positioned between the closed end and cylindrically shaped part of the capsule. The narrowing has an area with smaller inclination relative to the capsule axis and an area with stronger inclination which is disposed further away from the open end of the cap than the area with smaller inclination and has a width of 2 to 3 mm and an inclination of 0.03 to 0.07 mm/mm preferably 0.04 to 0.06 mm/mm. A locking ring with a depth of from 30 to 160 µm, preferably 140 to 120 µm and a width of from 0.8 to 1.2 mm is provided on said narrowing. The body comprises likewise a locking ring, the counter locking ring, which matches the locking ring of the cap and has a depth of 25 to 70 µm and a width of 0.7 to 1.3 mm. Furthermore, at its open end the body is provided with an area of reduced diameter formed by a circular shaped ring with a depth of 10 to 60 µm and a width of 0.8 to 1.4 mm and a wider ring of symmetrical or asymmetrical cross-sectional profile to fit the elongated protrusions.
Patent CA-2236591-C (CA)
Title: Continuous low-dose cytokine infusion therapy
Inventor: CUTLER DAVID L
IPC: A61P31/14
Filed: 1996-10-31
Granted: 2012-01-03
Abstract: A method is provided for treating conditions that are susceptible of treatment with a cytokine wherein the undesirable side effects normally associated with cytokine administration are diminished or eliminated. The method comprises continuously administering a low dose of a cytokine to an individual afflicted with a condition susceptible of treatment with the cytokine. In a preferred embodiment of the invention, chronic hepatitis C is treated by administering a low dose amount of interferon.
Patent CA-2242641-C (CA)
Inventor: HAKKINEN LEO
IPC: E21B19/08
Filed: 1997-01-14
Granted: 2004-09-21
Abstract: An arrangement for leading flexible elements, such as hoses, around a hose reel along a feed beam to a moving rock drill. In the invention flexible elements are mounted around the same hose reel in at leas t two successive layers in the radial direction of the hose reel, and each radial layer is pivoted so as to revolve round the shaft of the hos e reel independently of other layers.
Patent CA-2244948-C (CA)
Title: Waste stream treatment
Inventor: REIMER RONALD ANTHONY
IPC: C02F1/02
Filed: 1997-02-12
Granted: 2001-08-21
Abstract: A waste water cleanup process where an aqueous solution of organoboron compounds is hydrolyzed to boric acid and the corresponding organic compound  by treatment at a temperature of greater than 150 ~C at a pressure sufficien t to prevent substantial evaporation and at a pH of 5 or greater, but 9 or les s.
Patent CA-2247848-C (CA)
Title: Nitric oxide donors capable of reducing toxicity from drugs
Inventor: DEL SOLDATO PIERO
IPC: A61P43/00
Filed: 1997-02-24
Granted: 2008-07-15
Abstract: Use of organic compounds containing the -ONO2 function, or inorganic compounds containing the -NO group or compositions comprising said compounds to reduce the toxicity caused by drugs to the gastrointestinal and/or renal apparatus, said compounds being characterized in that they are nitric oxide NO donors, i.e. when they are put into contact in vitro with cells of the vasal endothelium or platelets.
Patent CA-2249816-C (CA)
Inventor: SCHULTE NORBERT
IPC: A24D3/14
Filed: 1998-10-08
Granted: 2007-06-26
Abstract: The invention relates to a method and a device for applying substances to the fibers of a filter material for smokable articles, wherein fibrous or sheet-like filter materials are dusted with micronized solid substances.
Patent CA-2251252-C (CA)
Inventor: COBB SANFORD JR
IPC: G02B5/02
Filed: 1997-03-03
Granted: 2002-02-05
Abstract: The present invention includes a structured optical film with variable pitch  peaks and/or grooves to reduce the visibility of moiré interference patterns  and optical displays incorporating one or more layers of the film. The pitch  variations can be over groups of adjacent peaks and/or valleys or between adjacent pairs of peaks and/or valleys.
Patent CA-2254301-C (CA)
Title: Colour blending apparatus and method
Inventor: BRYANT EDWARD J
IPC: B28B13/02
Filed: 1998-11-23
Granted: 2003-11-04
Abstract: An apparatus for colour blending an agglomerating flowable material from a differently coloured individual batches, to collect a charge of mottled heterogeneous material from at least two batches so that mottled products (i.e. with irregular arrangement of spots or confluent blotches of colour) are produced from a relatively dry concrete mixture (zero slump concrete), which agglomerates into clumps that tumble randomly from individual hoppers containing individually coloured concrete batches. By controlling positioning of a filling tray relative to a hopper outlet, the time sequencing and quantity of material released from each hopper outlet, it is possible to fill the filling tray in a large number of seemingly random mottled patterns where clumps of each of the individual colours remain visible in the moulded product.
Patent CA-2260705-C (CA)
Title: Combined process and plant for producing compressed air and at least one air gas
Inventor: WILLEMOT ANTOINE
IPC: F25J3/04
Filed: 1999-02-04
Granted: 2007-07-10
Abstract: The plant comprises, on site, a compressed-air provision and distribution system (L A) with at least one dedicated air compressor (CO2, CO3), an air-gas production and provision system (L G) comprising an air treatment unit (S), with a reservoir R of the said air gas and normally fed by a compressor (CO1). In temporary operating mode, with one air compressor (CO2) off-line, the compressed air from the compressor (CO1) of the air gas provision system (S) is at least in part diverted (C), typically with pressure reduction (D), to sustain the production of the compressed air system (L A) , the air gas then being at least in part provided by the reservoir (R).
Patent CA-2264786-C (CA)
Title: System and method for controlling an active matrix display
Inventor: COSTA VICTOR M DA
IPC: G09G3/20
Filed: 1997-08-27
Granted: 2003-10-07
Abstract: A smart controller chip for controlling an active matrix display. Within the controller chip, circuitry for generating analog reference levels is incorporated alongside circuitry for generating digital timing and control signals. The combination of D/A analog circuitry and standard digital logic makes the controller uniquely suited for addressing all the panel control needs both for the normal digital functions but also for control of the analog aspects of the panel, like display gamma. The analog reference levels and the digital signals are made programmable using registers internal to the controller chip. The contents of these registers are programmed initially by digital values stored in an external PROM or in flash memory integrated into the controller chip. In addition, software in a host system is able to program these registers via an interface between the host system and the controller chip.
Patent CA-2270150-C (CA)
Title: Systems and methods for visualizing interior tissue regions
Inventor: WHAYNE JAMES G
IPC: A61B5/296
Filed: 1997-10-27
Granted: 2008-07-15
Abstract: An imaging element characterizes tissue morphology by analyzing perfusion patterns of a contrast media in tissue visualized by the imaging element, to identify infarcted tissue. In a preferred implementation, a catheter tube (12) introduced into a heart region carries the imaging element (34), as well as a support structure (20) spaced from the imaging element, which contracts endocardial tissues. The imaging element is moved as the imaging element visualizes tissue. A selected electrical event is sensed in surrounding myocardial tissue which regulates movement of the imaging element. The support element stabilizes the moving imaging element as it visualizes tissue, providing resistance to dislodgment or disorientation despite the presence of dynamic forces.
Patent CA-2272037-C (CA)
Inventor: MCMULLEN JACQUES
IPC: B03D1/14
Filed: 1999-05-14
Granted: 2006-07-18
Abstract: A method for controlling a froth flotation system in a mineral processing operation for recovering metal from a metal source. A rule-based expert system adjusts performance of the froth flotation system.
Patent CA-2272633-C (CA)
Inventor: HE XIONGWEI
IPC: A61K9/36
Filed: 1997-12-05
Granted: 2007-03-13
Abstract: La présente invention concerne des compositions polymères non animales permettant de former un film, en particulier, pour des gélules rigides et souples. Ces compositions comprennent des éthers de cellulose solubles à l'eau, des hydrocolloïdes et des agents séquestrants.
Patent CA-2272767-C (CA)
Title: Chair, in particular office chair
Inventor: UHLENBROCK JOHANNES
IPC: A47C3/026
Filed: 1999-05-20
Granted: 2008-04-08
Abstract: This application discloses a chair, in particular an office chair comprising a seat top with at least one front seat support arm and at least one rear seat support arm projecting at the underside of the seat top, a seat carrier which is securely connected to a central chair column or several chair legs, and a backrest which is arranged at a backrest carrier firstly extending under the seat top backwards and thereafter upwards with the backrest carrier supported by means of a crosswise horizontally extending backrest carrier swivelling joint with the front seat support arm articulately connected to the seat carrier through at least one lever wherein the rear seat support arm offset backwards from the backrest carrier swivelling joint is articulately connected to the backrest carrier by means of a crosswise horizontally extending rear seat joint, and wherein a spring arrangement is provided under the seat top with the spring arrangement exerting a biassing force upwards upon the seat top and frontally upon the backrest.
Patent CA-2284571-C (CA)
Inventor: JESSENBERGER RALF
IPC: B66B11/04
Filed: 1998-02-06
Granted: 2003-11-18
Abstract: L'invention concerne un moteur linéaire (10, 12) pour ascenseurs, servant à actionner une cabine (14) guidée dans une cage d'ascenseur, qui comprend au moins une rangée d'enroulements statoriques (28, 29) pouvant être fixés sur la cage d'ascenseur ou sur la cabine d'ascenseur, ainsi qu'au moins une rangée d'aimants d'excitation (32, 35) de polarité alternée, qui sont placés de manière opposée et à distance des enroulements statoriques et peuvent être fixés sur la cabine d'ascenseur ou sur la cage d'ascenseur. Afin que ce moteur linéaire n'exerce que des forces transversales réduites sur le support du moteur, qu'il fonctionne aussi silencieusement que possible et qu'il soit facile à monter, il est prévu que les enroulements statoriques soient réalisés sans fer et qu'ils soient montés entre deux rangées opposées d'aimants d'excitation. L'invention concerne en outre un ascenseur avec une cabine déplaçable dans une cage d'ascenseur, ledit ascenseur étant équipé d'un moteur linéaire de ce type pour actionner la cabine.