baber/WOPTO huggingface dataset:
Patent CA-2225261-C (CA)
Inventor: MIWA SATOSHI
IPC: B01J23/75
Filed: 1997-12-18
Granted: 2006-11-21
Abstract: Waste water containing nitrogen compounds is treated by first breaking the nitrogen compounds down by electrolysis in the presence of chlorine ions. The electrolysis step converts chlorine ions to hypochlorite ions. The partially treated water is returned to a storage container. The hypochlorite ions oxidize the nitrogen compounds and are reconverted to chlorine atoms. The partially treated water then may be returned to the electrolysis container to regenerate hypochlorite ions. In a second step, the partially treated waste water is passed over a metal peroxide catalyst. The metal peroxide catalyst further breaks down the nitrogen compounds, and removes the excess hypochlorite ions.
Patent CA-2229804-C (CA)
Inventor: MCKEE CRAIG V
IPC: A63B57/00
Filed: 1996-08-15
Granted: 2004-08-10
Abstract: The present invention provides for projecting supported objects, such as baseballs, footballs or golfballs.      The apparatus (100, 200, 300) includes a movable striker (140, 220, 320) having a first surface (144, 227, 321) (a target surface) for receiving a force, and a second surface (145, 225, 322a) (a projecting surface) for projecting the object, with the object being supported by a supporting surface (132, 225, 322b). The supporting surface may be a portion of the second (projecting) surface or another surface on the striker, or alternatively may be portion of a support member (130) separate from the striker. The target surface receives a force from the user, the force being subsequently transmitted through the striker to the supported object via the projecting surface. The striker may be movably coupled to a base (110, 210, 310) with the striker being limited to fore-and-aft movement relative to the base, so that the object will be projected forwardly in a predetermined direction even if the target surface is not struck in a squarely forward direction. The striker may also be adapted to be positioned in a second, operative position, in such a way that the apparatus supports the object and allows the user to strike the object directly.
Patent CA-2230985-C (CA)
Inventor: HUTCHINSON CHRISTOPHER PAUL
IPC: E21B29/00
Filed: 1996-09-23
Granted: 2006-07-25
Abstract: A cutting insert (10) for use in a wellbore milling tool comprising a base which can be mounted on a surface of said wellbore milling tool and a plurality of cutting surfaces (25, 26, 27) which are separated from one another 13y linear boundaries (16, 18). This construction helps facilitate the formation of relatively narrow chips.
Patent CA-2231819-C (CA)
Title: Bi-directional optical transmission system
Inventor: GNAUCK ALAN H
IPC: H04B10/24
Filed: 1998-03-10
Granted: 2002-04-02
Abstract: BI-DIRECTIONAL OPTICAL TRANSMISSION SYSTEM    A bidirectional optical transmission system provides communications between at least two locations over a single optical fiber.  The transmitters at the respective locations are defined to have different optical spectra characteristics to avoid production of optical beat interference.
Patent CA-2232329-C (CA)
Inventor: LIVINGSTON JAMES WESLEY
IPC: A47L15/44
Filed: 1996-06-11
Granted: 2003-05-27
Abstract: A container (11) for institutional detergents, preferably tablets(12), includes a rigid large screened base (15) and a flexible plastic film sidewall (17) heat bonded to the peripheral surface ofthe base. The container (11) is filled, preferably from its top portion, with tableted detergent (12) and closed with a single heat seal (19) along the top surface of the wall of the container (11). The screen surface (15) is then closed with a removable, peel-off seal or removable cap. The upper portion (20) of the container (11) will include a handle (22) which makes it easy to transport the container (11) and place it into a dispenser (13) for use.In use, a water nozzle will spray upwards onto the surface of thescreen base through the holes in the screen, dissolving detergentand allowing the solution to pass downwardly to a drain (53), which directs it to a ware washing apparatus.
Patent CA-2235640-C (CA)
Inventor: KUMAR SUDHIR
IPC: B61K3/02
Filed: 1998-04-23
Granted: 2004-11-23
Abstract: In railroad applications, a new method of simultaneously lubricating the rail gage side (RAGS) and wheel flanges ahead of a locomotive's tractive wheels and lubricating the top of the rail (TOR) behind the tractive wheels to reduce the resistance of the trailing cars and reduce the locomotive wheel flange wear. The method involves controlling both lubricating units with the same computer controller when a single locomotive is used and two controllers located in two different locomotives in the case of a locomotive consist. The rail gage side lubricant spray is applied on curves of 2 degrees or more only on the high rail. For the top of rail lubrication at the trailing end of the locomotive or locomotive consist this invention requires that the angle of the lubricant jet on the rail from the vertical be between 0 and 80 degrees from the vertical, with the angle increasing in the rear or trailing direction. It further requires that the lubricant jet be a solid jet without breaking into a spray cone.
Patent CA-2236621-C (CA)
Inventor: UESUGI TAKASI
IPC: B66D3/16
Filed: 1998-05-05
Granted: 2001-07-10
Abstract: To provide a hand operated chain block which can be downsized while enabling a hand chain to be easily wound over a hand wheel without disassembling the hand wheel from a chain block body when the hand chain is seated in the hand wheel, a hooking groove for the hand chain to be hooked is formed in an outer plate of the hand wheel having an inner plate and the outer plate between which the hand chain is fitted. For winding the hand chain over the hand wheel, it is only necessary that after the hand chain is hooked by the hooking groove, the hand wheel is turned.
Patent CA-2238481-C (CA)
Inventor: BLOKZIJL WILFRIED
IPC: C11D3/00
Filed: 1996-11-11
Granted: 2006-01-24
Abstract: A laundry detergent composition contains a surfactant system consisting wholly of anionic surfactant, or of anionic and nonionic surfactants in a ratio at least 0.9:1, a detergency builder, and a soil release polymer which is a defined water-soluble or water-dispersible sulphonated non-end-capped polyester, for example, of terephthalic acid, isophthalic acid, sulphoisophthalic acid and ethylene glycol.
Patent CA-2244286-C (CA)
Inventor: SIM HO CHIN
IPC: A61K8/00
Filed: 1998-09-11
Granted: 2005-07-12
Abstract: The present invention is related to a body cosmetic pigment composition used for enhancing elasticity of the skin and helping losing a weight and its method, in which the body cosmetic pigment composition includes various ingredients, such as calcium, potassium, iodine, selenium, alginic acid, and the like, extracted from either or both of brown seaweeds and sea tangles, and viscous solutions, such as inorganic silica, aluminum and magnesium, obtained from the loess. The body cosmetic pigment composition provides elasticity in excessively sagged muscles, provides pliability in a body, has an effect on losing of weight, contributes to prevent the skin from aging by providing the inorganic substance, the mineral and the like for skin cells through the capillary vessel connected to the skin, and further give effects to maintain physical fitness.
Patent CA-2254321-C (CA)
Inventor: MANGLA RAJ K
IPC: B65D43/16
Filed: 1998-11-18
Granted: 2007-07-03
Abstract: A plastic container comprises a lid and a base. The lid includes a top wall and a lid side wall extending downward from the top wall. The base includes a bottom wall and a base side wall extending upward from the bottom wall. In accordance with one aspect of the present invention, the lid includes a first stepped flange extending laterally outward from a lower portion of the lid side wall, and the base includes a second stepped flange extending laterally outward from an upper portion of the base side wall. Internal portions of the respective first and second stepped flanges form a button latch for securing locking the container in a closed position. In accordance with another aspect of the present invention, the lid side wall includes a plurality of facets interconnected at corners. The corners are arced outwardly in radial cross--sections taken generally perpendicular to the top wall and through the respective corners, and the facets are arced inwardly in a cross-section taken generally parallel to the top wall and through the facets.
Patent CA-2254492-C (CA)
Inventor: BARBERIO ALESSANDRO
IPC: A61F13/04
Filed: 1998-11-25
Granted: 2003-12-09
Abstract: A surgical cast venting device comprises an elongate strip of porous fabric material and a number of relatively short, elongate plastic tubing members distributed over and attached to the elongate strip on one side thereof. The tubing members each extend substantially parallel to this, one side and are open ended. The elongate strip is adapted for winding around part of a human body prior to application of a surgical cast. Preferably the tubing members each have holes distributed along their respective lengths so as to permit the passage of air in and out of these members. The elongate strip can be tapered at opposite ends thereof. The fabric material can be gauze and the tubes can be attached thereto by adhesive.
Patent CA-2256258-C (CA)
Title: Swab test for determining relative formation productivity
Inventor: ZAMFES KOSTA
IPC: E21B43/00
Filed: 1998-12-16
Granted: 2007-10-02
Abstract: The productivity of a formation is determined by stroking the drill bit up and down (swabbing) in the zone of interest for creating a suction in the wellbore and inducing the flow of hydrocarbons from the formation. The drilling mud 15 is first circulated to deplete hydrocarbon gas from the mud 15, the zone is swabbed, and the mud 15 is again circulated and the quantity of hydrocarbon gas contained therein is measured for comparison against that known for predetermined productivity. Preferably, the swabbing is performed enough times to ensure measurable production regardless of filter cake or invasion.
Patent CA-2262895-C (CA)
Title: Systeme de detection d'intrusion utilisant la detection par bandes de signaux silencieuses
Inventor: GAGNON ANDRE
IPC: G08B13/24
Filed: 1998-06-05
Granted: 2008-04-01
Abstract: Dans un système de détection d'intrusion qui comporte un "câble à dispersion" ou une ligne de transmission ouverte, et que l'on utilise pour déterminer la présence d'objets, de choses ou de gens se déplaçant à proximité dudit câble, une antenne émettrice (10) et une antenne réceptrice (18), dont l'une est une ligne de transmission ouverte/un câble à dispersion, sont connectées respectivement à une unité émettrice (14) et à une unité réceptrice (18). Une unité de commande (26) commande à la fois l'unité émettrice (14) et l'unité réceptrice (18), de façon que l'unité réceptrice (18) balaie une bande radio présélectionnée, l'unité émettrice (14) n'émettant pas, afin de détecter un ou plusieurs intervalles relativement silencieux de la bande dans lesquels le niveau du signal reçu instantanément est inférieur à un seuil prédéterminé. L'unité de commande (26) sélectionne dans lesdits intervalles relativement silencieux une pluralité de fréquences disparates, de façon que l'unité émettrice (14) émette, au moyen de l'antenne émettrice (10), des signaux auxdites fréquences disparates. L'unité réceptrice (18) reçoit les signaux correspondant aux signaux émis et l'unité de commande (26) détecte dans les signaux reçus les perturbations dues à un intrus se trouvant à proximité du câble à dispersion, ce qui détermine la présence dudit intrus. Les fréquences disparates peuvent avoir une largeur de bande égale à au moins 5 % et de préférence à environ 10 % de leur fréquence moyenne. Le fonctionnement dans les bandes silencieuses permet d'employer la diversité de fréquence, ce qui atténue l'effet des ondes stationnaires, et de déployer le câble à dispersion en l'absence de milieu à pertes électriques, par exemple au-dessus du sol, tout en donnant une sensibilité de détection uniforme.
Patent CA-2263281-C (CA)
Inventor: CAHOON EDGAR
IPC: C12N15/29
Filed: 1997-08-01
Granted: 2009-10-13
Abstract: Disclosed is a method for modifying the chain length and double bond positional specificities of a soluble plant fatty acid desaturase. More specifically, the method involves modifying amino acid contact residues in the substrate binding channel of the soluble fatty acid desaturase which contact the fatty acid. Specifically disclosed is the modification of an acyl-ACP desaturase. Amino acid contact residues which lie within the substrate binding channel are identified, and subsequently replaced with different residues to effect the modification of activity.
Patent CA-2266180-C (CA)
Inventor: FRANCO MUNOZ JOAQUIN
IPC: A63F7/02
Filed: 1999-03-17
Granted: 2005-05-17
Abstract: The board game (1), with the conventional pivots (2) determining the labyrinth-type course for the ball, is framed by a circumferential channel (5) in which there is a ring (8) provided with at least one lateral, internal opening housing (12) so that, upon the rotation of said ring (8) each housing (12) is placed, in sequence, opposite a lower opening (7) of the circumferential channel (5) in order to receive a ball (17) and opposite another upper opening (6) via which the ball returns, under gravity, to the game zone. In addition, in the passages (3) which the ball or balls (17) has or have to reach at the end of each play there are arms or stops (13) capable of closing off said passages, retaining the ball or balls (17) for a sufficient time for the player to be able to observe it or them and subsequently allowing it or them to fall, to which end said arms or stops (13), crossing the board (1) via transverse grooves (16), are fixed in a monobloc manner forming a type of comb (14) which can be actuated transversely by an electromagnet (15).
Patent CA-2267450-C (CA)
Inventor: NAKA NOBUHIKO
IPC: G11B27/10
Filed: 1998-07-28
Granted: 2004-04-27
Abstract: The invention is the object to reduce the probability of discarding a variable length frame by establish both synchronization of a variable length frame and protection of header information in the variable length frame, and suppress the increase of redundancy of transmission data in an environment where an code error is liable to occur. The transmitter side stores a specified unique word (specific information), error-detection-encoded data of header information n necessary for decoding the nth information data and establishing a frame synchronization, error-detection- encoded data of frame length information indicating the frame length of a frame n, and error-detection-encoded data of header information n-1 of a frame n-1 of one frame before in the frame n storing the nth information data. The receiver side receives the frame header of the frame n, and determines the timing of a frame synchronization by using frame length information when the frame length information has been transmitted without an error and by detecting the unique word and header information of the next frame from a received signal sequence (data sequence) in the other cases, and detects header information n-1 inserted in a position (directly after the frame length information) in the frame n corresponding to the timing and decodes information data in a frame of one frame before by means of the header information n-1 when the frame header in the frame of one frame before has not been decoded successfully.
Patent CA-2273213-C (CA)
Inventor: VIHERVAARA TAPIO
IPC: C09D193/04
Filed: 1997-12-01
Granted: 2006-08-22
Abstract: A "one-shot" composition for use in paper sizing comprises an admixture of a rosin emulsion, a soluble aluminium salt and a cationic starch derivative which has a charged state of 1.0 to 3.5 m equivalents per gramme and which is produced by a process in which the starch structure was split prior to the cationising step.
Patent CA-2273943-C (CA)
Inventor: HARRIS DAVID ANDREW
IPC: G02C7/10
Filed: 1997-11-27
Granted: 2006-08-22
Abstract: On peut améliorer la perception des couleurs en adaptant à l'oeil d'un patient une lentille de contact en plastique possédant une partie centrale circulaire teintée. On détermine la teinte optimum en analysant les effets sur le patient d'une suite de lentilles teintées différemment.
Patent CA-2274067-C (CA)
Title: Reactor gasifying engine particulates and unburned hydrocarbons
Inventor: WANG CHI
IPC: B01D53/72
Filed: 1997-11-25
Granted: 2002-06-25
Abstract: A reactor that can be attached to the exhaust manifold of an internal combustion engine to oxidize and burn carbon soot particles, carbon monoxide, and unburned hydrocarbons, and to dissociate nitrogen and sulfur oxides. The reactor has a reaction zone (20) that contains porous heat-retaining foam cells (30) and that is bounded by a porous heat-retaining zone (4), which in turn is surrounded by ceramic insulation materials (6, 7) to minimize energy losses. Engine exhaust (1) at elevated temperatures and containing some oxygen (air) enters the reaction zone (20). By impinging heat transfer, thermal radiation enhancement, energy trapping and combustion of engine emissions, temperatures sufficient to oxidize carbon soot particles, carbon monoxide, and unburned hydrocarbons are attained. Steam or atomized water droplets (104) are introduced to improve the efficiency of the reactor through gasification, regasification, water shift reactions, methanation, and hydrocracking reactions. Harmless product (12) of the oxidation reactions, H2O and CO2, are released from the reactor.
Patent CA-2283744-C (CA)
Inventor: BRACE GEOFF
IPC: A61M15/00
Filed: 1998-03-13
Granted: 2004-06-01
Abstract: An inhalation apparatus (1) for dispensing a product comprises a housing (2) and an end cap (3) axially slidable relative to the housing.      The housing comprises a portion adapted to receive a pressurized dispensing container and connected to a mouthpiece, and duct means communicating with the container receiving portion for conveyance of product towards the mouthpiece. The end cap comprises a socket for engaging the pressurised dispensing container. The end cap has a collar (10) with an inwardly directed rim (11). The housing including an outwardly directed flanges (5) which fits within said rim. The end cap is movable between a first position in which said rim and flange have an axial overlap and there is no or a minimal flow of air through the housing and a second position in which there is a maximum flow of air, the air flow being created by a user applying suction to the mouthpiece.
Patent CA-2285077-C (CA)
Inventor: MCILWRAITH LON W
IPC: E06B9/06
Filed: 1998-03-18
Granted: 2002-09-24
Abstract: An extendable security bar assembly (10). The assembly (10) is for placing over or in an opening (17) and has a plurality of bars (12) extending between two channels (16), the two channels (16) positioned on opposing faces of the opening (17) with the bars (12) slidable within the channels (16). The bars (12) are connected at each end within the channels (16) to a transporting mechanism (20) in each channel (16) coordinated to slide the bars (12) across the opening (17). A drive system is provided for the transporting mechanism (30), and guides (44, 46) at ends of the channels guide (16) and retain the bars (12) in a storage area (24) substantially adjacent the opening (17).
Patent CA-2292817-C (CA)
Title: Method and apparatus for elliptic curve cryptography and recording medium therefor
Inventor: KURUMATANI HIROYUKI
IPC: G06F7/72
Filed: 1999-12-20
Granted: 2004-02-17
Abstract: A method and an apparatus capable of realizing at a high speed an elliptic curve cryptography in a finite field of characteristic 2, in which the elliptic curve is given by y2 + xy = x3 + ax2 + b  (b .noteq. 0) and an elliptic curve cryptography method which can protect private key information against leaking from deviation information of processing time to thereby defend a cipher text against a timing attack and a differential power analysis attack are provided. To this end, an arithmetic process for executing scalar multiplication arithmetic d(x, y) a constant number of times per bit of the private key d is adopted. Further, for the scalar multiplication d(x, y), a random number k is generated upon transformation of the affine coordinates (x, y) to the projective coordinates for thereby effectuating the transformation (x, y) .fwdarw. [kx, ky, k] or alternatively (x, y) .fwdarw. [k2x, k3y, k]. Thus, object for the arithmetic is varied by the random number (k).
Patent CA-2295977-C (CA)
Title: Continuous reaction method by solid/gas catalysis in unconventional medium, corresponding reactor and use of said reactor
Inventor: LEGOY MARIE-DOMINIQUE
IPC: C12M1/40
Filed: 1998-07-20
Granted: 2008-07-15
Abstract: The invention concerns a continuous reaction method by solid/gas catalysis in unconventional medium, using different substrates to obtain predetermined products, substrates and products forming compounds, which consists in controlling: the reaction in temperature to determine the saturation pressure of each pure compound taking part in determining the compound thermodynamic activity; the total pressure at a level lower than atmospheric pressure; the molar flow rates of the compounds and the vector gas, to adjust the gas mixture molar composition on the basis of the predetermined values of the thermodynamic activity of said compounds.
Patent CA-2299027-C (CA)
Inventor: BRAND NORBERT
IPC: E01F8/00
Filed: 2000-02-18
Granted: 2008-06-10
Abstract: The invention relates to a noise-protection wall-segment, for example for roads, motorways or railways and such like, said noise-protection wall-segment consisting of transparent sheets, preferably of transparent plastic sheets, and means fixing the sheets. The transparent sheet is shaped around a perpendicular to the installation surface of the assembled noise-protection wall, 'shaping' being understood to mean vaulting and/or folding.     A noise-protection wall composed of the segments is transparent over its entire length and height, since no retaining posts and/or load-bearing members are necessary between the individual segments. In the fitted state the preferably prestressed segments are reciprocally supported laterally and are supported against retaining posts at the ends of the wall or at intervals which can be freely chosen.
Patent CA-2300557-C (CA)
Title: Sanitary napkin
Inventor: YOSHIMASA WATARU
IPC: A61F13/472
Filed: 2000-03-07
Granted: 2004-09-21
Abstract: A sanitary napkin 1 includes respective pairs of upper and lower layer flaps 11, 12 placed upon each other, each of the upper layer flaps 11 is elastically stretchable longitudinally of the napkin 1 and each of the lower layer flaps 12 is provided with a wing 13, and thereby prevent the menstrual discharge from leaking sideways.
Patent CA-2302995-C (CA)
Inventor: ROZAK ALEXANDER THOMAS
IPC: G01V11/00
Filed: 2000-03-24
Granted: 2001-11-27
Abstract: A novel method for measuring fracture porosity in coal seams is disclosed.  Knowledge of fracture porosity is critical to methane production from coal seams as fractures form the main permeable pathways for gas migration. The disclosed invention can be used to determine likely locations where commercially significant amounts of fracturing have occurred in the coals. These locations pose prime targets for methane exploration, and the disclosed invention comprises a significant new tool in methane exploration. The disclosed invention uses existing geophysical well log data, a screening process and calculations based on the characteristics of the fluid used to drill the hole.  Using these data, the volume of invaded coal is determined, as well as the volume of drilling fluid available to create this invasion. The volume fraction of the invading drilling fluid divided by the volume of the invaded rock produces a measure of the fracture porosity of the coal. Locations that exhibit higher values of fracture porosity are more commercially attractive as methane exploration targets.