baber/WOPTO huggingface dataset:
Patent CA-2274094-A1 (CA)
Inventor: HACIAS KENNETH J
IPC: C23C22/00
Filed: 1997-11-28
Abstract: Iron phosphate conversion coatings that are well adapted to serve as carriers for metal cold working lubricants, particularly such lubricants that contain polyoxyethylene adducts of long chain primary alcohols as a major lubricating component, can be formed on ferriferous surfaces within practical time such as 5 to 10 minutes by contact with an aqueous solution of almost neutralized phosphoric acid that has sufficient Free Acid and/or Total Acid content to form a heavier phosphate conversion coating than do conventional iron phosphating compositions. The phosphate conversion coating forming aqueous liquid composition advantageously also contains an accelerator component such as chlorate or hydroxylamine.
Patent CA-2275270-A1 (CA)
Inventor: ROHRBACH WILLIAM RUSSELL
IPC: G08B25/10
Filed: 1999-06-16
Abstract: For use in a wireless network, an alarm system and method of operation thereof. In one embodiment, the alarm system includes: (1) a local transceiver that, in response to a received stimulus, establishes a wireless link of diminished bandwidth to a wireless central monitoring station in the wireless network and (2) a local controller, coupled to the transceiver for bidirectional communication therewith, that receives commands from the wireless central monitoring station via the wireless link.
Patent CA-2279640-A1 (CA)
Inventor: SUZUKI MAKOTO
IPC: B24D7/18
Filed: 1999-08-04
Abstract: A grinding body for on-line roll grinding, comprising a grindstone mounted in a cup shape on a surface portion, and near a peripheral edge, of a circular support base plate, wherein a peripheral edge portion of the circular support base plate has on a surface side thereof a two-layer structure including a flat ring-shaped portion jutting toward an inner periphery so as to define a groove opening inward; the grindstone is mounted on the flat ring-shaped portion; and a damping material is filled and mounted into the groove.        This grinding body can effectively prevent the formation of a spiral mark and a pitching surface mark, improve the grinding power and grinding accuracy, and prolong the life of the grindstone.
Patent CA-2280298-A1 (CA)
Inventor: CHENG JIP
IPC: A47K1/14
Filed: 1999-08-13
Abstract: An improved drain cover assembly for a sink is provided. The assembly includes a generally cylindrical basket having a flat bottom. A sealing plate is attached to the underside of the flat bottom. A plurality of apertures sized to permit the drainage of liquids from the sink, but prevent solid materials from passing therethrough, are located on the bottom of the basket about the sealing plate. An externally threaded member extends from the bottom of the sealing plate. The plug may be cylindrically shaped or frustoconically shaped and is press fit into a drainpipe. The plug has an open upper end and a bottom surface. The bottom surface contains a plurality of apertures to allow for liquid to drain but to prevent solid materials from passing therethrough.  The bottom surface of the plug has an internally threaded member extending upwardly therefrom which mates with the threaded member extending from the bottom of the sealing plate. The upper edge of the plug contacts the sealing plate to seal the drain cover assembly when the basket is threaded down on the plug. The assembly is opened by rotating the basket with respect to the plug from a space between the sealing plate and the plug to allow liquid to drain therethrough.
Patent CA-2286837-A1 (CA)
Title: Aqueous compositions comprising a lipid and a lanolin-derived surfactant, and their use
Inventor: STEEL IAN
IPC: A61K8/00
Filed: 1998-04-22
Abstract: An aqueous composition comprising, in addition to water: (a) one or more surfactant materials selected from polyoxyalkylene condensate derivatives of lanolin or a lanolin derivative; and (b) a lipid component comprising one or more lipid materials, especially lanolin or a lanolin derivative, present as particles emulsified by the said one or more lanolin-derived surfactant materials and having a median particle size of less than about 5 µm, especially from 0.01 to 1  m.  The compositions have very good physical stability and are particularly useful as carriers for transdermal delivery of pharmaceutical actives to the human skin.
Patent CA-2287332-A1 (CA)
Title: Multi-ply integrated label form
Inventor: CHESS STANLEY C
IPC: B42D15/00
Filed: 1999-02-09
Abstract: The invention broadly comprises a multi-ply integrated label form including a first ply having an upper side and an underside and having a first die cut window and a second die cut window, and also having an integral marginal feed strip along a first edge of the first ply and a detachably secured marginal feed strip along a second edge of the first ply, where the first edge and second edge are parallel to one another; a second ply having a label portion, a card stock portion adjacent to and detachably secured to the label portion, a marginal strip portion adjacent to and detachably secured to the card stock portion, and a marginal feed strip portion adjacent to and detachably secured to the marginal strip portion, each of the label portion, card stock portion, marginal strip portion, and marginal feed strip portion having an upper side and an underside, the underside of the label portion and of the marginal strip portion being coated with an adhesive, wherein the first ply is removably secured to the second ply; and, a third ply comprising a first portion and a second portion, each of the third ply first and second portions having an upper side coated with a release material, the third ply first portion being in register with the second ply label portion and removably secured thereto by the adhesive, and the third ply second portion being in register with the second ply marginal strip portion and removably secured thereto by the adhesive.
Patent CA-2288412-A1 (CA)
Title: Plasma mass filter
Inventor: OHKAWA TIHIRO
IPC: H01J49/30
Filed: 1999-11-03
Abstract: A plasma mass filter for separating low-mass particles from high-mass particles in a multi-species plasma includes a cylindrical shaped wall which surrounds a hollow chamber. A magnet is mounted on the wall to generate a magnetic field that is aligned substantially parallel to the longitudinal axis of the chamber. Also, an electric field is generated which is substantially perpendicular to the magnetic field and which, together with the magnetic field, creates crossed magnetic and electric fields in the chamber. Importantly, the electric field has a positive potential on the axis relative to the wall which is usually zero potential. When a multi-species plasma is injected into the chamber, the plasma interacts with the crossed magnetic and electric fields to eject high-mass particles into the wall surrounding the chamber. On the other hand, low mass particles are confined in the chamber during their transit therethrough to separate the low-mass particles from the high-mass particles. The demarcation between high-mass particles and low mass particles is a cut-off mass M c which is established by setting the magnitude of the magnetic field strength, B Z, the positive voltage along the longitudinal axis, V ctr, and the radius of the cylindrical chamber, "a". M c can then be determined with the expression: M c = ea2(B z)2 / 8V ctr.
Patent CA-2290011-A1 (CA)
Title: Process for the production of acetic acid
Inventor: MUSKETT MICHAEL JAMES
IPC: C07C53/08
Filed: 1999-11-17
Abstract: In a process for the continuous production of acetic acid by feeding methanol and/or a reactive derivative thereof and carbon monoxide to a carbonylation reactor wherein there is maintained a liquid reaction composition comprising methyl acetate, water, Group VIII noble metal carbonylation catalyst, hydrocarbyl halide co-catalyst, optionally at least one promoter, and acetic acid, the methyl acetate concentration in the liquid reaction composition is maintained at a pre-determined value by monitoring the ratio of methanol and/or reactive derivative thereof to carbon monoxide being converted to acetic acid and adjusting the methanol and/or reactive derivative thereof feed rate in response thereto in a manner such that the methyl acetate concentration is maintained at the pre-determined value. This can assist in reducing build up of methyl acetate in the reactor during periods of loss of activity.
Patent CA-2290170-A1 (CA)
Title: Improved digital signature
Inventor: VASUDEVAN NARAYANAN
IPC: G06F21/64
Filed: 1999-11-22
Abstract: The invention relates to the generation of digital signatures by the use of which the legally binding nature of a digital signature is enhanced. For this, an expanded digital signature is created which, in addition to the hash, contains other information, in particular information identifying the hardware and software environment used in generating the signature.
Patent CA-2291580-A1 (CA)
Title: Anchoring of objects
Inventor: MELE PETER C
IPC: B63B21/46
Filed: 1999-12-06
Abstract: Method and apparatus for the anchoring of a floating object by an elongated shank having an attached fluke that extends along the vicinity of the shank, with an edge of the fluke extending to a tip from a constraint movably mounted on the shank, with the fluke apertured and proportioned to limit fouling by a rode attached to the shank and facilitate attachment for storage.
Patent CA-2292671-A1 (CA)
Title: Substrate having a unidirectional conductivity perpendicular to its surface, devices comprising such a substrate and methods for manufacturing such a substrate
Inventor: TERLOUW ERIK MAARTEN
IPC: G02F1/136
Filed: 1998-06-12
Abstract: Substrate (7; 7'; 10) and devices including such a substrate, the substrate having a first surface and a second surface extending substantially in parallel to the first surface, the substrate being of a material of a first conductivity and provided with a plurality of electrically conducting channels (21) which are extending exclusively in a direction perpendicular to the first and second surfaces, said channels having a second conductivity substantially larger than the first conductivity, the substrate being provided with at least one electrode (42) on either one of the first and second surfaces, contacting at least one of said channels, the at least one electrode (42) having a predetermined minimum dimension (D) in a contact area (A) with the substrate, and mutual distances between adjacent ones of the plurality of channels (21) being smaller than said minimum dimension of said at least one electrode (42).
Patent CA-2297490-A1 (CA)
Inventor: MANNING WILLIAM C
IPC: A61K45/00
Filed: 1998-07-29
Abstract: The present invention is directed to a method for providing AAV mediated gene therapy to a patient, comprising administering to a patient a replicationdefective adeno-associated virus particle which infects a cell in the patient, the particle having therein a gene encoding a protein needed by the patient, the gene being operatively linked for expression in the cell, and at about the time of above-administering step, also administering to the patient an immunosuppressant that suppresses the patient's humoral immune response. The present invention is also directed to pharmaceutical compositions comprising the above described adeno-associated virus and humoral immuno-suppressant in a pharmaceutically acceptable carrier. Examples of proteins expressed by the above-described vectors include erythropoietin, thrombopoietin, human growth factor, leptin, Factor VIII, Factor IX, Factor Xa and the like.
Patent CA-2302857-A1 (CA)
Inventor: CHEN JIN-FU
IPC: B25B7/00
Filed: 2000-03-24
Abstract: A tool including two grips and over one tool head. The grips can be opened to different extents so as to rotate the fixing pins of the grips relative to the openings of the tool head. Accordingly, the short sides of the fixing pins can be respectively aligned with the openings or the grips are stopped by the long sides of the fixing pins from detaching from the tool head. The grips can be easily and quickly assembled with or disassembled from the tool head. In addition, the replacement of the tool head can be performed by hands without using any tool or switch. Also, the tool has less components which are not easy to miss.
Patent CA-2303445-A1 (CA)
Inventor: BROLLOS KLAUS
IPC: C07C51/43
Filed: 1998-09-09
Abstract: L'invention concerne un procédé pour la préparation d'acide acrylique ou d'acide méthacrylique par préparation d'un mélange de produits gazeux présentant sensiblement la composition d'un mélange réactionnel de l'oxydation catalytique en phase gazeuse d'alcales C¿3?-/C¿4?, d'alcènes C¿3?-/C¿4?, d'alcanols C¿3?-/C¿4? ou bien d'alcanals ou encore de précurseurs de ceux-ci pour donner de l'acide acrylique ou de l'acide méthacrylique. La séparation du produit contenu dans le mélange de produits gazeux s'effectue selon un procédé comportant les étapes suivantes: a) condensation du mélange de produit gazeux, b) cristallisation de l'acide acrylique ou de l'acide méthacrylique contenu dans la solution obtenue lors de l'étape (a), (c) séparation des cristaux obtenus contenus dans la lessive-mère et (d) recyclage d'eau vers l'étape (a) d'au moins une partie de la lessive-mère issue de l'étape (c).
Patent CA-2303546-A1 (CA)
Title: Tapered electrode for plasma arc cutting torches
Inventor: KABIR A A S AREFIN
IPC: H05H1/38
Filed: 2000-03-30
Abstract: An electrode for a plasma arc cutting torch, wherein the electrode comprises a holder having a tapered tip and emissive element concentrically disposed therein. The holder has an included angle of taper at the tip of between about 25°  and about 40° and a diameter at the tip approximately equal to, or slightly larger than, the diameter of the end surface of the emissive element. The electrode is configured such that the holder comprises a relatively thin holder wall at the tip of the electrode which evaporates due to the heat from the adjacent arc generated through the emissive element such that the tapered tip erodes generally simultaneously with the emissive element. Generally simultaneous erosion of both the holder and the emissive element thus avoids the problems of overheating and/or double arcing and extends the service life of the electrode. A method of operation of a plasma arc torch is also provided.
Patent CA-2303965-A1 (CA)
Inventor: WATKINS RUSSELL LAMBERT
IPC: E04C3/04
Filed: 1998-09-16
Abstract: A hollow flange section (1) consisting of an open cavity (4) defined by a pair of opposed cavity walls (5) and a cavity base (6). Two enclosed volumes are formed adjacent the cavity by lateral support members (3) extending from a base member (2) to intersect each cavity wall (5). The cavity base (6) and the base member (2) form an integral structure that resists skew deformation of the cavity. The enclosed volumes provide structural support that gives the hollow flange section greater strength. Also described is a composite beam formed from a pair of hollow flange sections with an intermediate web.      The composite beam has greater strength with less mass than comparable prior art beams.
Patent CA-2307936-A1 (CA)
Title: Hip-pad for protection of greater trochanter
Inventor: GARCIA MARIO C
IPC: A41D13/05
Filed: 2000-05-08
Abstract: A garment and insert combination for decreasing the risk of trauma to the hip joint in the greater trochanter region of the human body, and comprising a garment that fits over the hips and having a pocket to securely hold in place a generally planar but configured resilient hip pad. The pad is in the form of an annulus of generally inverted "U" configuration with the outer edges being coincidental with the outer periphery of the elliptical form, and with the annulus being open in the area covering the greater trochanter region.
Patent CA-2308209-A1 (CA)
Inventor: LAUTZENHISER LLOYD LYNN
IPC: H03L7/189
Filed: 1998-10-16
Abstract: An adaptive frequency-hopping oscillator (60 or 310) recalls previously-stored channelizing information for one channel from a RAM (82), or from both a PROM (312) and a RAM (314), drives an output frequency of a VCO (22) toward phase lock for that one channel, compares a feedback frequency with a reference frequency in a phase detector (62), corrects the recalled channelizing information in a parallel adder (80 or 318), drives the output frequency of the VCO (22) closer to phase lock in response to the corrected channelizing information, stores the corrected channelizing information in the RAM (82 or 314), and repeats the correcting, driving, and storing steps before recalling channelizing information for an other channel, compensating for all nonlinearities of analog components including the VCO (22) and a D/A converter (84), and obviating the necessity of inserting housekeeping steps before changing to a new channel. A digital lead compensator (70) of a digital integrator (72) enhances loop stability. Preferably, a nonlinear D/A converter (280 or 292) with downwards steps (266) that produce dual addresses in output voltages (268), and that eliminate "holes" in output voltages (260), is substituted for the D/A converter (84).
Patent CA-2311765-A1 (CA)
Inventor: SANO SADAO
IPC: B23H7/30
Filed: 1999-12-02
Abstract: An electric discharge machining comprising, an electrode mounting device (42) for mounting a tool electrode, a quill (41) movable in the vertical direction and having the tool mounting device attached to a lower end, at least two linear motor movers (43, 44) attached to the quill symmetrical about the central axis of the quill, at least two linear motor stators (31, 32), respectively opposite the at least two movers, and a balance device (6) for balancing a gravitational force acting on the quill.  The balance device comprises an air cylinder (60) arranged coaxially with the quill so that a balance force is aligned with the central axis of the quill. The air cylinder is preferably mounted in a hole formed in the center of the quill extending in a vertical direction.
Patent CA-2312376-A1 (CA)
Title: Method for inhibiting calcification of aldehyde-fixed bioprosthetic materials
Inventor: PFADENHAUER ERNEST H
IPC: A61F2/00
Filed: 1998-11-23
Abstract: A method for preparing collagenous biological tissues for use as implantable bioprosthetic material, and articles prepared thereby. The method generally comprises the steps of a) contacting the tissue with an aldehyde fixative to effect cross-linking of the connective tissue protein(s) and subsequently b) contacting the tissue with a polyglycidyl ether. The treatment of the cross-linked tissue with the polyglycidyl ether serves to mitigate the tissue's propensity to undergo calcification following implantation in the body.
Patent CA-2313107-A1 (CA)
Title: Methods and devices for separating catalyst from oxidation mixtures containing dibasic acids
Inventor: DASSEL MARK W
IPC: C08G69/46
Filed: 1998-12-08
Abstract: This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasic acids in the presence of a catalyst and a monobasic acid, by removing the catalyst from the reaction mixture, outside the oxidation zone, after the oxidation has taken place at least partially.  Initially, the catalyst is partially precipitated and removed by reducing the water level in the reaction mixture and/or subjecting the reaction mixture to a temperature at which or over which catalyst precipitates. After the initial partial precipitation of the catalyst, the mother liquor remaining is subjected to a thermal treatment during which at least the major part of the monobasic acid is removed leaving behind molten dibasic acids, in which the remaining catalyst precipitates substantially in its totality, and it is removed. The precipitated catalyst in the two precipitation stages may be recycled in miscellaneous ways.
Patent CA-2313955-A1 (CA)
Inventor: RUSSO THOMAS
IPC: A61Q17/04
Filed: 2000-07-14
Abstract: The present invention is a sunscreen composition in the form of an aerosol that foams. The composition contains a sunscreen agent, an emulsifier, a foam builder/stabilizer, a counterion, and a propellant. In addition, the ratio of the foam builder/stabilizer to counterion is about 1:4 to about 5:1.2 to ensure the foam quality and integrity.
Patent CA-2316021-A1 (CA)
Title: Arrangement for heating air supplied to a carburetor of a snow thrower engine
Inventor: STENZ DENNIS N
IPC: F02M31/087
Filed: 2000-08-10
Abstract: A snow thrower engine carburetor is covered by a heater box provided with a channel through which air passes so as to be heated by the engine's muffler. The heated airstream is changed in direction as it leaves the heater box and moves towards the carburetor whereby moisture carried in the airstream is separated therefrom before the heated air reaches the carburetor.
Patent CA-2316721-A1 (CA)
Inventor: CHAMNESS CLARENCE
IPC: E04H13/00
Filed: 2000-08-25
Abstract: A casket or coffin is provided with a drawer to receive an urn or other vessel containing ashes of a decedent.
Patent CA-2317232-A1 (CA)
Inventor: SWAIN IAN DOUGLAS
IPC: A61N1/36
Filed: 2000-09-01
Abstract: A stimulator for stimulating the leg or other parts of the body e.g. the leg in a patient with drop foot is provided, the stimulator being controlled by e.g a foot switch but being reliable in use and therefore commanding acceptance by users. The foot switch has to work in adverse environmental conditions and is subject to repeated use so that its characteristics vary with time. The invention provides a functional electrical stimulator for attachment to the leg that has adaptive characteristics and comprises first and second electrodes for attachment to the leg to apply as electrical stimulus, a foot switch for sensing foot rise or foot strike, a circuit responsive to said foot switch for generating stimulation pulses; and means forming part of said circuit for responding to changes in the resistance characteristics of said switch means by adjusting a corresponding response threshold of said circuit.      The invention also provides a two-channel stimulator that offers various possibilities for controlling the signals to be supplied to different muscle groups. For example, means may be provided defining a signal pathway between the first and second channels so that the supply of stimulation pulses in one of said first and second channels can be controlled by the state of switch means associated with the other of said first and second channels. In a further embodiment means defining a signal pathway between the first and second channels is arranged so that the supply of stimulation pulses in one of said first and second channels can be controlled by the state of activity of the other of said first and second channels.  In a yet further embodiment the first channel has means arranged to cause the stimulation pulses to time-out after a predetermined period and the second channel having no or disabled timing means so that supply of stimulation pulses is continuous in a predetermined state of limb position responsive switch means associated with that channel. The two-channel stimulator can be used e.g. to treat bilateral dropped foot.   Also provided is a pressure-sensitive resistor usable as a foot switch to be located in, on or under a shoe insole. The switch has an active portion comprising an array of fingers in contact with a conductive pad so that mechanical pressure urging the pad towards the fingers reduces the resistance of the switch. The fingers are of a first conductive material e.g. silver and have leads also of said first conductive material, said leads being cowered by a second conductive material e.g. a carbon-based ink.
Patent CA-2317291-A1 (CA)
Inventor: DEDELS RICHARD L
IPC: E21B17/00
Filed: 2000-08-31
Abstract: Sucker rod is made at a well site by welding 40 foot lengths of straight round bar. The welded rod is then coiled on large radius coils at the well site. Round bar is prepared for welding by pencil pointing and then mig welded. The coils are large enough that the bending stress of the rod is not exceeded.