baber/WOPTO huggingface dataset:
Patent CA-2258305-A1 (CA)
Title: Decomposing polymers using nor-hals compounds
Inventor: HERBST HEINZ
IPC: C08F8/50
Filed: 1997-06-17
Abstract: A method is described for the decomposition of polymers, especially waste plastics and used plastics, in which so-called NOR-HALS compounds - that is, for example, compounds comprising the group See formula I in which R* is C1-C20alkyl, OH-substituted C1-C20alkyl, optionally C1-C4alkyl-substituted C5-C12cycloalkyl or O- or S-interrupted C2-C20alkyl - are added and heating is carried out at temperatures which lie above the customary processing temperatures for polymers (280°C or more).
Patent CA-2260359-A1 (CA)
Inventor: NICHOL SCOTT W
IPC: A63B69/36
Filed: 1999-01-26
Abstract: Describes a golf club swing practice apparatus with a golf club of conventional appearance including a grip and club head connected by an elongate club shaft. The club shaft is hollow containing movable masses, preferably spherical steel bearings which are free to relocate along the shaft during club swing.  Improper golf club swing execution causes the masses to collide with each other and with the golf club shaft producing an audible noise and a tactile sensation which provides feedback to the golfer of improper swing execution.
Patent CA-2260666-A1 (CA)
Title: Engraving apparatus
Inventor: CARLSON BRADLEY D
IPC: B44B3/02
Filed: 1999-02-04
Abstract: An engraving apparatus for engraving a workpiece selected by a user. The workpieces are contained in storage columns and biased into a shuttle by a spring system mounted externally to each storage column. The shuttle is moved by the engraver between loading, engraving, and dispensing positions. The workpieces are clamped during the engraving process by a piston and cam arrangement, which provides the desired clamping force yet can be disengaged to facilitate movement of the shuttle by the engraver.
Patent CA-2260782-A1 (CA)
Inventor: KARSTENS TIES
IPC: C08B1/00
Filed: 1997-07-08
Abstract: A method of producing cellulose carbamate is described in which: (a) cellulose is brought into contact with liquid ammonia at an initial pressure exceeding atmospheric pressure and a temperature of at least about 25 ~C, in the presence of urea, the quantity of liquid ammonia sufficing at least to wet the surface of the cellulose; (b)the volume available to the cellulose-urea-liquid ammonia system is enlarged explosively, lowering the pressure by at least 5 bar, and an activated mixture of cellulose and urea is obtained; (c) the activated mixture of cellulose and urea is taken up in an inert organic carrier for the reaction, and heated to a temperature between about 110 ~C and 150 ~C to make cellulose carbamate, and (d) the organic reaction carrier and any urea not reacted are removed from the cellulose carbamate obtained. The method saves energy and supplies a very homogenous cellulose carbamate.
Patent CA-2261471-A1 (CA)
Inventor: MEENDERING ALLEN
IPC: E04G17/00
Filed: 1999-02-11
Abstract: A bracket for use with a system of forms for holding poured concrete forming concrete walls. The bracket is used to hold the forms at corners of the system when the concrete walls change directions. The corner bracket includes formations to hold the wall panels in place at the corner.
Patent CA-2262612-A1 (CA)
Title: Procede de traitement de l'arrieration mentale
Inventor: BYMASTER FRANKLIN PORTER
IPC: C07D417/04
Filed: 1997-07-28
Abstract: La présente invention se rapporte à un procédé de traitement de l'autisme et de l'arriération mentale chez un mammifère, qui consiste à utiliser un composé représenté par la formule générale (I).
Patent CA-2263908-A1 (CA)
Title: Method and apparatus for transmitting compressed packetized voice over atm
Inventor: BHARUCHA BEHRAM H
IPC: H04L12/70
Filed: 1999-03-02
Abstract: A system transmits compressed voice packets over ATM. The system receives a plurality of voice data units and an encoding rule for each voice data unit. A packet is formed from the received data units. The packet includes a header. The header includes the amount of data units in the packet, and the encoding rule for each packet. The packet is then placed in an ATM cell which is transmitted on an ATM virtual channel. The ATM cell includes at most one packet.
Patent CA-2264755-A1 (CA)
Title: Bag-type package to be torn for easy access to the product
Inventor: SCHAEFER HORST
IPC: A61F15/00
Filed: 1997-08-13
Abstract: The present invention pertains to a package to be torn for easy access to the product, with at least one sealing line which for easy tearing has a weak spot in the form of a score or cut to which an additional element is associated to facilitate grasping and opening the pack. The additional element is made of at least one cut-out near the weak spot. The inventive package is characterized in that the cut-out has at least a partial saw-tooth outline.
Patent CA-2265479-A1 (CA)
Title: Denitration catalyst, process for preparing the same, and exhaust gas purification method
Inventor: KATO YASUYOSHI
IPC: B01J21/06
Filed: 1998-07-09
Abstract: A denitration catalyst for use in the reduction of nitrogen oxides contained in an exhaust gas containing highly deliquescent salts as dust with ammonia, which bears thereon a porous coating of a water-repellent organic resin, a porous coating of a mixture of a water-repellent organic resin with inorganic oxide particles, or a porous coating of a mixture of a water-repellent organic resin with catalyst component particles. The denitration catalyst can be prepared, for example, by coating the surface of a denitration catalyst with an aqueous dispersion containing a water-repellent organic resin having a lower concentration, drying the coating, further coating the dried coating with an aqueous dispersion containing a water-repellent organic resin having a higher concentration, and then drying the coating to form a porous coating of a water-repellent organic resin. This denitration catalyst, even when used in the treatment of an exhaust gas containing ash containing highly deliquescent salts, enables the water-repellent porous coating formed on the surface to prevent the salts that have deliquesced from entering the catalyst. This can prevent the deterioration of the catalyst and enables a high catalytic activity to be maintained for a long period of time.
Patent CA-2266423-A1 (CA)
Title: Methods for optimization of gene therapy by recursive sequence shuffling and selection
Inventor: CHRISTIANS FREDERICK C
IPC: C12N9/10
Filed: 1997-09-26
Abstract: The invention provides methods of evolving nucleic acids for use in gene therapy by recursive sequence recombination. Many of the methods evolve vectors, both viral and nonviral, to have improved properties. For example, vectors are evolved to have improved properties of viral titer, infectivity, expression of a gene within a vector, tissue specificity, viral genome capacity, episomal retention, lack of immunogenicity of the vectors or an expression product thereof, site-specific integration, increased stability, or capacity to confer cellular resistance to microorganism infection. The invention further provides a phagemidadenovirus capable of generating single stranded DNA greater than 10 kilobases comprising an adenovirus and a phage f1 replication origin.
Patent CA-2267778-A1 (CA)
Title: Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing
Inventor: HAWKINS SAMUEL P
IPC: E21B21/01
Filed: 1997-09-26
Abstract: A multi-functional apparatus and method for drilling fluid and cementing operations to set casing (32) in a wellbore (12) for use on either top drive or rotary type rigs. The apparatus and method includes a fill-up and circulating tool (46), a cementing head assembly (47), and a wiper plug assembly (52). The fill-up and circulating tool (46) comprises a mandrel with a packer cup (29) fixedly attached to a sliding sleeve (26) disposed about the outside diameter of the mandrel. The cementing head and wiper plug assemblies are useable on any fill-up and circulating tool capable of being inserted into a casing. To fill the casing, the assembly is lowered from the rig such that a portion of the fill-up tool is inserted into the casing, the pumps are then actuated to flow fluid into the casing. To circulate fluid, the tool is lowered further such that the packer cup sealingly engages the inside diameter of the casing to allow fluid to flow through the casing, into the wellbore, and back to the fluid pumps. To cement the casing, the cement pump and hose assembly is connected to the cementing head to allow cement to be pumped through the fill-up and circulating tool and into the casing string. A cement plug assembly comprising a plurality of wiper plugs is connected to the outlet of the fill-up and circulating tool. The wiper plugs are then released at a predetermined time during the cementing process to provide a positive seal at the bottom of the casing string.
Patent CA-2272645-A1 (CA)
Inventor: KIRCHMEYER STEPHAN
IPC: C09D183/14
Filed: 1999-05-25
Abstract: This invention relates to novel suspensions containing (a) 30 to 95 wt.% of water, (b) 70 to 5 wt.% of at least one silane or siloxane having at least two groups corresponding to formula (I) -(CH2)m SiR n X3-n (I) wherein R denotes C1-C18 alkyl and/or C6-C20 aryl, X denotes OH, C1-C4 alkoxy, C6-C20 aryloxy, C1-C6 acyloxy and/or hydrogen, m is 1 to 6, and n is 0 to 2, (c) 0.1 to 30 wt.% of at least one emulsifier, and (d) 0 to 20 wt.% of one or more additives and/or auxiliary substances, with the proviso that the sum of components (a) to (d) totals 100 wt.%. The present invention further relates to the preparation and use of such suspensions.
Patent CA-2275038-A1 (CA)
Title: Adjustment mechanism
Inventor: THOMAS ROGER
IPC: A01D34/74
Filed: 1999-06-16
Abstract: A lawn mower comprising a cutting deck mounted on a castor wheel assembly via a height adjustment mechanism wherein the height adjustment mechanism comprises a two part system having a first part mounted on the cutting deck and a second part that is mounted on the castor wheel assembly and which is slidably disposed in a vertical direction on the first part, and the height adjustment mechanism includes a locking mechanism, for example a cam or crank, which is capable of releasably locking the first part and the second parts of the height adjustment in any of a plurality of positions. The two part system comprises a sleeve mounted on one part and which is rotatably mounted upon and axially slidable along a rod mounted on the other part. The locking mechanism locks the sleeve in a plurality of axial positions along the rod whilst allowing the sleeve to freely rotate about the rod.
Patent CA-2277080-A1 (CA)
Inventor: COTTEN FRED
IPC: E06B9/326
Filed: 1997-12-31
Abstract: A window covering cord safety assembly (10) which includes at least one window covering control cord (12) having free lower ends (14) which bear eyelets (16). A safety device (18), which is releasably connected to the free ends (14) of the cords (12), includes a housing (20) with closed upper and bottom ends (22, 24) interconnected by sidewalls (26) and defining a generally central space (28). The space incorporates a cord retainer (38) which includes external pockets (44) in its lower portion (42). The free ends (14) of the cords (12) and eyelets (16) pass through openings (33) in the housing (20) into the pockets (44). The cords remain therein until the retainer's (38) lower portion (42) moves up into the upper portion (30) of the space (28) to release them from the retainer pockets (44). A spring (50) is mounted between the retainer top and the top of the housing (20) to bias the retainer downward. Separation of the control cords (12) from the housing (20) prevents a child from being entangled in the control cords loops.
Patent CA-2277214-A1 (CA)
Inventor: HAUSER RICHARD P
IPC: B01D3/20
Filed: 1997-01-27
Abstract: A fractionating column (1) is provided which has perforated fractionating trays (2) and downcomers (7) allowing liquid to flow from one tray to the tray immediately below, said downcomers being provided with radial outflow ports (4) directing downflowing liquids towards the column wall rather than onto the surface of the tray directly below the downcomer. This permits at least a portion of the under-downcomer area to be perforated thereby increasing the capacity of the tray for vapor/liquid contact and ensuring that weeping of the liquid through the perforations is avoided without need for an increase in vapor pressure.
Patent CA-2277725-A1 (CA)
Inventor: MCKAY NORMAN J
IPC: B30B11/00
Filed: 1999-07-02
Abstract: This invention relates to a method for compacting powdered, particulate, or granular matter and for containing the compacted matter during subsequent processing. When a continuous tube woven of high-tensile strength material is subjected to an axial elongating force, its radius tends to undergo a reduction proportional to axial elongation, and its included volume decreases. When such a tube in relaxed untensioned state is uniformly filled with other material and then subjected to an elongating axial force, the volume within the tube tends to reduce and the contained material is subjected to a compacting force. Axial elongating force may be maintained or varied during subsequent processing of the contained powder. The tube may be wound on a bobbin or other shape during further processing of the contained material. To fabricate very long continuous filled tubes, the tube may be woven in the region surrounding a nozzle through which the contained material is extruded at a uniform rate, Since the tube is woven; small apertures exist through the tube wall through which other substances may be introduced or extracted
Patent CA-2279202-A1 (CA)
Title: Method and apparatus for transmitting atm over deployable line-of-sight channels
Inventor: POPE FRANK B JR
IPC: H04L12/70
Filed: 1998-02-04
Abstract: A system for transmitting asynchronous transfer mode voice, video, data, and imagery over deployable line-of-sight channels. The system includes an ATM  adaptation layer and an ATM cell configuration, which include a flexible multirate encoder and decoder. The ATM cell configuration also entails separate encoding and decoding of header and payload codes, interleaving the header and payload bits, and a methodology for cell synchronization. Using this system, a deployable line-of-sight channel is available for ATM  transmissions in a military or tactical environment. Additionally, the system also enables a civilian or commercial ATM channel to operate with a military or tactical ATM channel.
Patent CA-2280909-A1 (CA)
Title: Neutral-aged hydrophobic silica gels with reduced surface area
Inventor: HAHN JAMES R
IPC: C01B33/16
Filed: 1998-02-18
Abstract: The present invention is neutral-aged hydrophobic silica gels having a reduced surface area and a method for their preparation. The method comprises three steps, where in the first step a mixture comprising a silica hydrosol and colloidal silica is contacted with a strong mineral acid at a pH less than about 1 to form a silica hydrogel having incorporated therein colloidal silica. In the second step the silica hydrogel is aged at a pH within a range of about pH 3.5 to pH 8. In the third step the silica hydrogel is contacted with an organosilicon compound in the presence of a catalytic amount of a strong acid to effect hydrophobing of the silica hydrogel to form a hydrophobic silica hydrogel having a surface area within a range of about 100 m2/g to 450 m2/g in the dry state. In a preferred method the hydrophobic silica hydrogel is further contacted with a sufficient quantity of a water-immiscible organic solvent to convert the hydrophobic silica hydrogel into a hydrophobic silica organogel.
Patent CA-2281583-A1 (CA)
Inventor: COLLIN ZEEV
IPC: H04L5/14
Filed: 1998-01-26
Abstract: An apparatus for and method of implementing a novel buffer based full duplex communication system is disclosed. The disclosed invention is particularly useful in native signal processing systems wherein heavy contention of processor resources typically exist, such as in systems running multi-tasking operating systems. The communication system of the present invention includes a receiver (34), transmitter (32), CODEC (62) and telephone hybrid (64). The major components of the system operate on a buffer of input samples consisting of a set of input bits. The communication system operates to generate a buffer of output samples consisting of a set of output bits. The invention utilizes a novel dynamic buffer size mechanism to optimize the tradeoff between buffer delay and processor a time period, on one hand, and robustness to interrupt latency and processor availability on the other hand. Small buffers provide the communication system with short, accurate response times in addition to short processing times.
Patent CA-2282030-A1 (CA)
Inventor: HUTCHINSON WILBUR
IPC: B42D25/30
Filed: 1999-09-08
Abstract: A secure document having first printed data in a first type font in a first location imprinted thereon, and second printed data in a second type font in a second location imprinted thereon, where the second printed data are a correlate of the first printed data. In one embodiment of the invention, the second printed data comprises the first painted data printed repetitively. In another embodiment, the second type font is proprietary, custom, or unique.
Patent CA-2284826-A1 (CA)
Title: Preparation of copper-indium-gallium-diselenide precursor films by electrodeposition for fabricating high efficiency solar cells
Inventor: BHATTACHARYA RAGHU N
IPC: C25D3/56
Filed: 1998-03-30
Abstract: A photovoltaic cell (10) exhibiting an overall conversion efficiency of 13.6 % is prepared from a copper-indium-gallium-diselenide precursor film (18). The film (18) is fabricated by first simultaneously electrodepositing copper, indium, gallium and selenium onto a glass/molybdenum substrate (12/14). The electrodeposition voltage is a high frequency AC voltage superimposed upon a DC voltage to improve the morphology and growth rate of the film (18). The electrodeposition is followed by physical vapor deposition to adjust the final stoichiometry of the thin film (18) to approximately Cu([ni_x,Gax)Se2, with the ratio of Ga/(In+Ga) being approximately 0.39.
Patent CA-2285239-A1 (CA)
Title: System and method for telecommunications system fault diagnostics
Inventor: ZHOU PING
IPC: H04M3/30
Filed: 1998-03-23
Abstract: A telecommunications fault location and diagnostic system employs a remote test unit (RTU) (2) to collect system parameter data. The RTU is operatively coupled to a trained neural network (30) which receives the system parameter data from the RTU (2). The neural network (3) is trained using pre-screened historical fault data which is stored in a database. Once trained the neural network classifies the RTU data into one of a predetermined number of fault probabilities.
Patent CA-2286783-A1 (CA)
Title: Method and apparatus for storing, retrieving, and processing multi-dimensional customer-oriented data sets
Inventor: NAUGHTON JEFFREY
IPC: G06F17/30
Filed: 1998-04-10
Abstract: Method and apparatus (10) having a plurality of cells in a first memory portion are arranged as a relational database for storing, retrieving and processing customer-oriented data sets and purchase history of customers. Requests for desired information inputted from input device (12) and previously stored instructions from memory (16a) are processed by processor (14).      The information is then stored in memory (16b) and or displayed on display unit (18) or printed by printer (20).
Patent CA-2287874-A1 (CA)
Title: Expandable stent apparatus and method
Inventor: BRENNEMAN RODNEY A
IPC: A61F2/92
Filed: 1998-05-01
Abstract: An expandable stent (1) has a sheeted material which is expanded from a compacted configuration to an expanded configuration. The sheet (1) is maintained in the compacted configuration at least in part by operation of a dynamic force, and the expansion occurs at least in part by removal of the dynamic force. In preferred embodiments, a bio-compatible sheeted material is wrapped around a retaining wire (23) to produce a compacted configuration, and the retaining wire (23) is rotated to maintain the compacted configuration during insertion of the stent (1) into a patient. The rotation is continued while the stent (1) is positioned, and then the rotation is stopped or slowed to permit expansion of the sheet (1).
Patent CA-2289360-A1 (CA)
Inventor: GOSSART PHILIPPE
IPC: A23L1/30
Filed: 1999-11-12
Abstract: The invention relates to a food supplement formulation intended to improve the digestibility of food intakes, notably for animals, comprising a mixture of butyrates to which there are optionally added sweeteners, vitamins and preservatives. The invention also concerns a food composition containing such a supplement formulation, as well as the uses of a mixture of butyrates with a view to improving the digestibility of the food intakes.
Patent CA-2294763-A1 (CA)
Title: Refractory system including reactive metakaolin additive
Inventor: VEZZA THOMAS F
IPC: C04B28/06
Filed: 1998-09-04
Abstract: An additive for reducing the calcium aluminate cement content in a refractory mix containing calcium aluminate cement. The additive is comprised of about 80 % by weight amorphous, powdered metakaolin, the metakaolin having a mean particle size of less than about 3.0 microns, and about 20 % by weight microsilica, the microsilica having a mean particle size of less than 45 microns.
Patent CA-2296226-A1 (CA)
Inventor: VISWANATHAN ARVIND
IPC: G06Q10/06
Filed: 2000-01-14
Abstract: The present invention provides a method and apparatus for executing ERP  application requests in a computer-implemented ERP data processing system via a network, using the steps of: (a) transmitting a HyperText Markup Language (HTML) input form to a browser executed by a client computer in the network for display on a monitor attached thereto; {b) receiving a HyperText Transfer Protocol (HTTP) request from the browser to access the ERP System, wherein the request optionally includes data entered by the user into an HTML input form; (c) transferring any data entered by the user into the HTML input form and any data stored in the requested HTML page into the ERP application API (d) transfernng control to the ERP application for execution; (e) receiving output data from the ERP application in response to the transmitted data and request; (f) merging the output data from the ERP application into a strongly typed Java object; (g) transforming the strongly typed Java objects into a transmittable format, such as XML or HTML, and (h) transmitting the HTML or XML object to the browser for display on the monitor attached to the client computer.
Patent CA-2297205-A1 (CA)
Inventor: FUJIWARA TAKAMASA
IPC: F25C3/04
Filed: 2000-01-26
Abstract: Primarily crushed flaky or platy pieces of ice are supplied from a supply port into a rotary blade casing of a high speed rotary snow producing and throwing apparatus toward a rotor blade in the shaft direction of a rotating shaft by strong discharge pressure of a forced blast, crushed into pieces with smaller and finer particle size through second crushing by the rotor blade rotating at high speed, and sent out from a delivery port nearly in the direction of a tangent of the rotational outer periphery of the rotor blade.
Patent CA-2299684-A1 (CA)
Title: Electroluminescent sign
Inventor: MURASKO MATTHEW M
IPC: H05B33/04
Filed: 1998-07-28
Abstract: Signs including electroluminescent lamps are described. In accordance with one embodiment of the invention, an electroluminescent lamp is coupled to a sign (50) by first forming a rear electrode (56) on a front surface of the sign substrate (52) which may be metal, plastic or cardboard. After forming the rear electrode on the sign, a dielectric layer (62) is screen printed over the rear electrode, and a phosphor layer (64) is screen printed over the dielectric layer. A layer of indium tin oxide (66) is then screen printed over the phosphor layer and a bus bar (68) or front electrode is provided to complete the lamp.