baber/WOPTO huggingface dataset:
Patent CA-2241819-C (CA)
Title: Motion activated illuminating footwear and light module therefor with continuous/sequential oscillating lights
Inventor: WUT SIU BUN
IPC: H05B37/02
Filed: 1998-06-29
Granted: 2002-08-13
Abstract: A light module for use with a plurality of light sources mounted to footwear, includes a power supply, an oscillator circuit, a power supply transmission circuit and a switch. The oscillation circuit supplies power to the light sources to sequentially cause illumination of the light sources. The switch has an open condition and a closed condition. A power transistor of the power supply transmission circuit has an input connected with the switch, and an output path connected between the power supply and the oscillation circuit for supplying power from the power supply to the oscillation circuit when the switch is closed and for terminating over time the supply of power from the power supply to the oscillation circuit when the switch is open. A bypass circuit includes diodes connected between the oscillation circuit and the switch to disable the oscillation circuit in order to continuously illuminate the light sources when the switch is closed. The bypass circuit is disabled when the switch is open. A first capacitive device of the power supply transmission circuit is connected between the input and the output path of the power transistor for storing a charge when the switch is closed and for discharging through the output path of the power transistor when the switch is opened to cause the oscillation circuit to sequentially supply power to the light sources and sequentially cause illumination of the light sources until the stored charge of the first capacitive device falls below a predetermined value.
Patent CA-2244692-C (CA)
Inventor: MACCALLUM HAAKON
IPC: G01R1/20
Filed: 1998-08-05
Granted: 2004-07-27
Abstract: An apparatus and method for measuring electric current.      The apparatus includes a conductive shunt for developing a voltage drop in response to current flow through the shunt, a temperature sensor for sensing the temperature of the shunt, and an amplifier for amplifying the voltage drop across the shunt. The voltage drop developed by the shunt has a known dependence upon the temperature of the shunt.      The amplifier has an output for producing a current signal indicative of current flow through the shunt and has a gain dependent upon the temperature of the shunt, to compensate the current signal for changes in the voltage drop across the shunt due to the known dependence upon temperature of the voltage drop developed by the shunt.
Patent CA-2248160-C (CA)
Title: Preparation of secondary alkyl sulfate particles with improved solubility
Inventor: KAZUTA TAKASHI
IPC: C11D1/14
Filed: 1997-02-26
Granted: 2002-08-06
Abstract: Secondary (2, 3) alkyl sulfate surfactants are admixed with a deagglomeratin g agent such as zeolite or silica. The resulting powder is agglomerated with a  nonionic surfactant, and formed into particles. The particles are then coate d with a free-flow aid. SAS particles treated in this manner have improved solubility characteristics for use in laundry detergents.
Patent CA-2254003-C (CA)
Inventor: DRESSLER BRADLEY S
IPC: E04C5/18
Filed: 1998-11-12
Granted: 2006-07-18
Abstract: The current invention is directed to a holder (32) for adjustable positioning of reinforcing rods (49). The holder has a horizontal support structure and a means for holding a reinforcing rod (49). The holder is comprised of a first leg member (33), a second leg member (34), a spring (35) and a retaining member (41). The leg members are elongated for spanning one of the cells of a hollow block (20). The first and second leg members are configured and arranged to create a gap (37) therebetween for receiving the reinforcing rod. The spring is adapted to bias the leg members against the reinforcing rod to vertically suspend and selectively permit adjustment of the vertical position of the reinforcing rod during the construction of a hollow block wall (47). In the preferred embodiment, the leg members and the spring are integrally formed from a continuous wire member having a U-shaped profile.  The present invention also broadly comprises a hollow block wall construction incorporating the holders described above, and also a method of constructing a hollow block wall. As the wall is constructed, the holders permit the vertical reinforcing rods to be raised to approximately correspond to the height of the wall under construction.
Patent CA-2257883-C (CA)
Inventor: KESHAVAN MADAPUSI K
IPC: E21B10/16
Filed: 1997-06-20
Granted: 2005-12-13
Abstract: A rolling cone bit (10) having a gage row (80) and an adjacent nestled gage row (70) of cutter elements that are positioned on gage so as to divide or share the borehole corner cutting duty. The wear resistance, hardness, toughness and shape of the cutter elements in the adjacent rows (60, 70, 80) are optimised depending upon the type of cutting the respective rows perform , the characteristics of the formation being drilled and the drilling techniqu es being employed. In most applications, the nestled gage cutter elements (70) will have cutting surfaces that are more wear resistant or harder than the cutting surfaces of the gage cutter elements (80) which experience more bottom hole duty. The nestled gage cutter elements (70) engage the borehole wall with a negative rake angle for increased durability. Preferably, the nestled gage cutter elements (70) have continuously contoured and non-shearing cutting surfaces.
Patent CA-2259993-C (CA)
Inventor: NAIDU ARUN
IPC: H01Q3/26
Filed: 1997-07-07
Granted: 2004-02-24
Abstract: A communications system and method are provided for reducing noise in a distributed antenna network. The system includes a plurality of remote antenna units (100n) with each remote antenna unit including a receiver for receiving input signals, a signal strength processor (130n) for determining whether a valid signal is present at its respective remote antenna unit (102n) and an output controller (142n) for switching off the network connection when no valid signal is present. As a result, the cumulative noise generated by uplink stages connected to the remote antenna units (100n) is reduced by switching off the network conncection of remote antennas that do not have to be connected. The communications system and method may further include an output controlle r for controlling the output for its respective remote antenna unit based on the comparison by the signal strength processor. The output controller may control the network connection of the remote antennas by switching off their connection to the network when the signal strength processor determines that the signal strength level is below a noise threshold level. The output controller may control th e output of the remote antenna units by switching off their connection to the network when the signal strength processor determines that the signal strength level is below a noise threshold level and by switching on the connection to the network when the input signal strength level is greater than or equal to the noise threshold level.
Patent CA-2260641-C (CA)
Inventor: PARENT RICHARD ARTHUR
IPC: A01B59/042
Filed: 1999-02-03
Granted: 2006-07-04
Abstract: This invention relates to a threaded and/or non-threaded split shank for a hitch receiver drawbar, implement, and the like, and a means of securing that split shank to the hitch receiver with the two bolts, one from each side, or with a conventional draw pin. If the split shank is fastened with two bolts, movement between the split shank and hitch receiver is eliminated. The absence of movement prevents the hitch receiver and the implement shank from wearing out, and greatly reduces the chances of the implement shank rusting solid in the hitch receiver tube. The split shank also adds overall strength and reinforcement to the hitch receiver.
Patent CA-2262625-C (CA)
Title: Filter for a wet/dry vacuum cleaner for wet material collection
Inventor: GIANNETTA RICHARD W
IPC: A47L7/00
Filed: 1997-08-20
Granted: 2003-10-21
Abstract: The present invention is an improved method of employing a wet/dry vacuum cleaner for wet material pick-up. By employing a hydrophobic and air permeable filter material, such as an expanded polytetrafluoroethylene (PTFE), with a tight gasket around its edge in place of a conventional wet/dry vacuum filter, it has been determined that the filter can be retained in place at all times during operation, regardless of the material being collected.
Patent CA-2263898-C (CA)
Inventor: COBB MARK A
IPC: A61K35/12
Filed: 1997-09-16
Granted: 2009-12-08
Abstract: La présente invention concerne des constructions de greffes tissulaires utiles pour stimuler la croissance et la cicatrisation de structures tissulaires de type neurologique détériorées ou malades. Plus particulièrement cette invention concerne une construction de greffes tissulaires sous-muqueuses et une méthode induisant la formation de structures neurologiques endogènes sur un site nécessitant une croissance tissulaire neurologique endogène.
Patent CA-2265675-C (CA)
Inventor: BELTRAN CARLOS I
IPC: H04R1/30
Filed: 1998-07-28
Granted: 2002-10-08
Abstract: A compact horn speaker suitable for use on emergency vehicles has a rear- facing motor circuit, a horn plate, and a mouth section. The horn plate has a plurality of horns folded therein in a plane perpendicular to the longitudin al direction of the speaker. The phase plug for the motor circuit is integrally  formed on the horn plate and has a plurality of apertures each opening to a folded horn in the horn plate. The folded horns are connected to a horn mout h formed in the mouth section. The mouth section is formed of a thermally conductive material and has an integrally formed receptacle for receiving th e magnet assembly of the motor circuit. The receptacle holds the motor circuit  firmly in position and provides efficient thermal dissipation via the horn structure for heat generated by the motor circuit during operation.
Patent CA-2271249-C (CA)
Title: Macromolecular neuraminidase-binding compounds
Inventor: REECE PHILLIP A
IPC: A61K39/395
Filed: 1997-11-13
Granted: 2010-07-20
Abstract: The invention provides novel macromolecules, methods for their preparation, pharmaceutical formulations thereof and their use as anti-influenza agents. The invention also provides a novel diagnostic method which can be used for detection of all types of influenza A and B virus. The macromolecular compound of the invention has attached to it one or more molecules (neuraminidase binders) which bind to the active site of influenza virus neuraminidase but which are not cleaved by the neuraminidase.
Patent CA-2275761-C (CA)
Title: Catheter for radiofrequency ablation of tumors
Inventor: GARBAGNATI FRANCESCO
IPC: A61B18/00
Filed: 1997-12-19
Granted: 2006-11-07
Abstract: A catheter for the treatment of tumors by hyperthermia induced by radiofrequency or other energy comprises a tubular body (1) having a proximal end (2) connected to a handle member and near the other end a cooled metal plate (5) capable to act as active electrode provided with an electric cable (8) for connection to the energy generator and with thermistors (9,10) to be connected to the display of said generator, th e tubular body (1) having at least a longitudinal channel (11,12) for the passage of tissua l thermistors, a longitudinal channel (11,12) for the passage of electric cables and a pair o f longitudinal channels for inflow and outflow pipes of the liquid cooling the metal plate (5). The metal plate can be built in a ring-like form, wherein the body of the ring h as an empty space intended for the circulation of the cooling fluid.
Patent CA-2291644-C (CA)
Inventor: ZEHAVI EPHRAIM
IPC: H04W28/04
Filed: 1998-05-29
Granted: 2008-01-22
Abstract: In a communication system which conforms to the IS-99 standard, a concatenat ed code is used to provide for error free file transfer over the air. The concatenated code comprises Reed-Solomon coding (22), CRC block coding (32), and convolutional coding (36). At the transmitter, the file is partitioned into data frames and Reed-Solomon encoding (22) is performed on the data frames. CRC block encoding is then performed on the Reed-Solomon encoded data. The CRC encoded data is convolutionally encoded (36). The CRC block encoding (32) and convolutional encoding are performed in accordance with th e IS-99 standard. The additional Reed-Solomon encoding step provides improved error correction capability while maintaining compatibility with the IS-99 standard. At the receiver, Reed-Solomon decoding (104) is performed if the number of erasures in a code word is less than or equal to (n-k) or the symbol errors in a code word is less than or equal to (n-k)/2. Otherwise, a request for retransmission is sent.
Patent CA-2293116-C (CA)
Inventor: PETERSON MICHAEL
IPC: D01D5/18
Filed: 1999-12-24
Granted: 2009-04-28
Abstract: In an apparatus and method of forming fibers from a fiberizable material, a molten fiberizable material is introduced into a rotating fiberizing disk and passed through a plurality of holes in an annular peripheral sidewall of the fiberizing disk to form primary fibers from the fiberizable material. The primary fibers are introduced into hot combustion gases and pressurized air in a fiberization zone adjacent an outer surface of the annular peripheral sidewall of the rotary fiberizing disk to attenuate and form the primary fibers into fibers of the desired diameter and length. The hot combustion gases are discharged from an annular air cooled burner and the pressurized air, which is discharged from an annular air ring, is the same pressurized air used to cool the annular air cooled burner.
Patent CA-2294597-C (CA)
Title: Non-woven fabric treatment
Inventor: MCLOUGHLIN ROBERT HAMILTON
IPC: H01M50/494
Filed: 1998-06-08
Granted: 2006-12-12
Abstract: A non-woven fabric is formed from fibres which are substantially unbonded. Copolymerised to the surface of the fibres a vinyl monomer is capable of reacting with an acid or a base to form a salt directl y or indirectly by a reaction which involves exposure of the fabric to ultraviolet radiation while impregnated with a solution of the vinyl monomer. The fabric is suitable for use as an electrode separator in an electrochemical device.
Patent CA-2295164-C (CA)
Title: Procede de couture et machine a coudre permettant de degager un fil de tension d'un passage forme par un point de couture
Inventor: GUILHEM MARC
IPC: D05B29/06
Filed: 1998-07-09
Granted: 2006-09-19
Abstract: L'invention concerne un procédé de couture grâce auquel un fil de tension (8), guidé et mis en place coulissant dans un passage (P) d'un point de couture (3) est déplacé latéralement par rapport aux moyens (5, 6) de piquage entre une position normale et une position de dégagement où le fil de tension (8) est éloigné latéralement hors du passage (P), pour permettre notamment le sectionnement indépendamment des fils auxiliaires (4) du point de couture (3) et/ou du fil de tension (8).
Patent CA-2309015-C (CA)
Inventor: BIONDICH PAUL TIMOTHY
IPC: A42B3/20
Filed: 2000-05-19
Granted: 2007-07-24
Abstract: A headgear assembly for enhanced vision comprising of a guard assembly having an inner surface and outer surface. The inner surface includes a vision enhancing substance while the outer surface includes a light absorbing substance. The guard assembly is mounted to a helmet.
Patent CA-2309567-C (CA)
Inventor: BENDER MICHAEL J
IPC: F04B43/00
Filed: 2000-05-26
Granted: 2004-04-06
Abstract: A pump diaphragm includes a layer fabricated from polytetrafluoroethylene (PTFE) and an integral stud. In one embodiment, the stud is encapsulated within a hub assembly fabricated from PTFE and fastened to the PTFE layer with adhesive or welding, etc. In alternate embodiments, the stud may be molded in-situ with the PTFE layer using various methodology, including pressing the stud onto a heated PTFE layer. The PTFE layer then may be subjected to various forming operations to provide the diaphragm with desired dimensions and/or properties. Moreover, an additional layer or layers, such as an elastomeric layer, may be laminated onto an inside surface of the PTFE layer to provide a composite pump diaphragm.
Patent CA-2309921-C (CA)
Title: Method and apparatus for pitch estimation using perception based analysis by synthesis
Inventor: YELDENER SUAT
IPC: G10L25/90
Filed: 1998-11-16
Granted: 2004-06-15
Abstract: The present invention provides a method of pitch estimation which utilizes perception based analysis by synthesis for improved pitch estimation over a variety of input speech conditions. Initially, pitch candidates are generated corresponding to a plurality of sub-ranges within a pitch search range (item 2). Then a residual spectrum is determined for a segment of speech (item 4) and a reference speech signal is generated from the residual spectrum using sinusoidal synthesis (item 8) and linear predictive coding (LPC) synthesis (item 9). A synthetic speech signal is generated for each of the pitch candidates using sinusoidal (item 12) and LPC synthesis (item 13). Finally, the synthetic speech signal for each pitch candidate is compared with the reference residual signal (item 14) to determine an optimal pitch estimate based on a pitch period of a synthetic speech signal that provides a maximum signal to noise ratio.
Patent CA-2314932-C (CA)
Title: Method for producing mica-containing insulation tapes and applications thereof
Inventor: GSELLMANN HELMUT
IPC: H02K3/30
Filed: 1999-10-13
Granted: 2008-07-22
Abstract: The invention relates to a method for producing insulating tapes which contain mica and which are used for coils of rotating electrical high voltage machines. After winding, the inventive insulating tapes can be impregnated with a solvent-free artificial resin under vacuum and pressure, and can be subsequently hardened using heat action. A mica film which contains fibers and which contains, apart from fine mica, additional organic and/or inorganic fibers is sprinkled with an epoxy resin mixture in the form of a powder paint. In addition, the side of the fiber-containing mica films which is sprinkled with the powder paint is bonded to a supporting material under pressure and at an increased temperature.
Patent CA-2318025-C (CA)
Title: Context sensitive web-based user support
Inventor: MARCHIONDA DAWN M
IPC: G06Q30/02
Filed: 2000-09-11
Granted: 2007-04-24
Abstract: A method of providing support to a user of a computer peripheral includes sensing a peripheral indicia at a computer and registering the peripheral and downloading from a server additional information about the peripheral based on the peripheral indicia. The peripheral indicia includes any of a model number, a part number, a serial number, a date of manufacturer and a configuration indicia. Registering the peripheral is performed by launching a communications browser to connect to the server. The method also senses a peripheral condition at the computer where the peripheral condition includes either an error code or a code indicative of a consumable reaching a predetermined threshold or both. This method accesses the server at an address defined by the peripheral condition, and the server provides the browser with additional information about the peripheral condition.
Patent CA-2325983-C (CA)
Title: Drug delivery of proteins from polymeric blends
Inventor: MILLER ROBERT J
IPC: C07K16/28
Filed: 1999-04-20
Granted: 2009-02-17
Abstract: Degradable blend of polycaprolactone and crystallization modifier especially suited for use in the controlled release of biologically active proteins.
Patent CA-2328220-C (CA)
Inventor: STAVES SHERRE M
IPC: H04L12/56
Filed: 1999-06-10
Granted: 2003-12-23
Abstract: A switch apparatus (10) for optimizing the transfer of data packets between a plurality of local area networks (LANs (12, 14, 16)). Apparatus of the present invention are comprised of multiple controllers (23), e.g., a receive controller (24), and a transmit controller (25), which share common resources including a first memory (a packet memory (20)) which stores the data packets, a second memory (a descriptor memory (22)) which stores pointers to the stored data packets, and buffered data paths (preferably using FIFO buffers (178, 108)). The independent controllers (25, 24) operate essentially concurrently for most tasks while interleaving their use of the shared resources (20, 22).  Consequently, embodiments of the present invention can simultaneously receive and transmit data across multiple LAN data ports (18a, 18b, 18N) (e.g., 28 Ethernet ports comprised of 10/100 and/or 10 Mbps ports).
Patent CA-2331765-C (CA)
Inventor: CREGG JAMES M
IPC: C12N1/21
Filed: 1999-07-02
Granted: 2013-03-12
Abstract: The present invention provides formaldehyde dehydrogenase genes (FLD) from methylotrophic yeasts. The FLD structural genes confer resistance to formaldehyde and are therefore useful as a selectable marker in methylotrophic yeasts. The FLD promoter sequences are strongly and independently induced by either methanol as sole carbon source (with ammonium sulfate as nitrogen source) or methylamine as sole nitrogen source (with glucose as carbon source). Induction under either methanol, methylamine or both provides levels of heterologous gene expression comparable to those obtained with the commonly used alcohol oxidase I gene promoter (PAOX1). The FLD promoter of Pichia pastoris (PFLD1) is an attractive alternative to PAOX1 for expression of foreign genes in P. pastoris, allowing regulation by carbon (methanol) or nitrogen (methylamine) source within the same expression strain. Yeast strains, expression cassettes, expression vectors, and host cells comprising an FLD gene promoter and 3' termination sequence are also provided.
Patent CA-2332980-C (CA)
Title: Shape-formed, three dimensional, moisture vapour permeable, liquid impermeable articles
Inventor: PALUMBO GIANFRANCO
IPC: A61L15/22
Filed: 1999-06-09
Granted: 2004-04-27
Abstract: The present invention relates to shape-formed, three dimensional, moisture vapour permeable, liquid impermeable articles comprising moisture vapour permeable, liquid impermeable structures comprising a thermoplastic composition. The thermoplastic compositions comprise preferred thermoplastic polymers and suitable hydrophilic plasticisers that also enhance the moisture vapour permeability of structures, e.g. films or layers, made from the thermoplastic compositions. The shape-formed three dimensional articles of the present invention can find a variety of applications wherein moisture vapour permeability combined with liquid imperviousness are desirable.
Patent CA-2333262-C (CA)
Title: Regioselective method for preparing cyclodextrin derivatives monosulfonylated at c-6
Inventor: DEFAYE JACQUES
IPC: C08B37/16
Filed: 1999-05-25
Granted: 2008-07-22
Abstract: The invention concerns a highly region-selective method for preparing a cyclodextrin C-6 monosulphonyl derivative in particular .beta.-cyclodextrin, which consists in reacting said cyclodextrin with a sulphonylation agent in an aqueous alkaline solution in the presence of a metal salt capable of forming a co-ordinating complex with the cyclodextrin secondary hydroxyl groups, and a t the end of the reaction in recuperating said cyclodextrin C-6 monosuphonyl derivative from the reaction mixture. Cyclodextrin monosulphonyl derivatives are particularly useful as starting materials for obtaining monofunctionalis ed cyclodextrin derivatives.