baber/WOPTO huggingface dataset:
Patent CA-2483244-A1 (CA)
Title: Drill string shutoff valve
Inventor: MOVAFFAGH BEHROOZ
IPC: E21B21/08
Filed: 2004-09-30
Abstract: A valve assembly connects into a drill string for opening and closing a passage within the drill string. The valve assembly has an inner valve member for opening and closing an inner passage of the drill string. The valve member moves between the open and closed positions in response to axial movement of the drill string.  Lifting the drill string causes the upper portion to move upward relative to the lower portion, bringing along with it the valve member, while the valve sleeve remains stationary with the lower portion, opening the valve. The valve assembly can include an annular valve assembly for opening and closing an annular passage located around the inner passage. The annular valve assembly is opened and closed by increasing the pressure in the annular passage above the annular valve assembly.
Patent CA-2485446-A1 (CA)
Title: Polymer obtained by means of controlled radical polymerisation comprising at least one boronate function, association thereof with a ligand compound and uses of same
Inventor: DESTARAC MATHIAS
IPC: C08F2/38
Filed: 2003-05-14
Abstract: The invention relates to a polymer that can be obtained by means of controlled radical polymerisation of at least one monomer comprising a boronate function or precursor and of at least monomer without a boronate function or precursor. In addition, the invention relates to the association of the aforementioned polymer with at least one monomer, oligomer, polymer or an organic or mineral surface having at least one group which can be complexed with a boronate function or precursor of the inventive polymer. The invention also relates to the production of said association and the use thereof.
Patent CA-2486059-A1 (CA)
Inventor: CUI FUTONG
IPC: C09K3/00
Filed: 2003-05-14
Abstract: L'invention concerne des émulsions de cire à base d'eau, à utiliser éventuellement conjointement à des systèmes de protection à base de cuivre alcalin et/ou d'ammonium quaternaire. Ces émulsions sont constituées d'une cire naturelle ou d'une cire synthétique, de tensioactifs non ioniques présentant des valeurs HL B supérieures à 11, des tensioactifs anioniques, et de l'eau. Certaines compositions d'émulsion, comme il est décrit dans la description, possèdent l'unique propriété de maintenir la stabilité de l'émulsion dans des agents de protection du bois, lors d'une utilisation prolongée, dans des procédés de traitement de bois typique. L'invention concerne du bois hydrophobe traité au moyen de ces émulsions de cire. L'invention concerne également un procédé de traitement de bois, consistant à mettre à disposition du bois et à le traiter à l'aide d'une émulsion de cire, dans des conditions efficaces pour augmenter son caractère hydrophobe.
Patent CA-2486871-A1 (CA)
Title: A strap coupling
Inventor: HICKEY MARESE
IPC: A41B9/16
Filed: 2003-05-21
Abstract: The present invention is concerned with a coupling (10) for use in securing a strap to a garment, for example on a bra (12) or bikini, the coupling comprising a slideway (14) adapted to be secured to the body of the garment, and a slider (22) connectable to the strap, (36) the slider being shaped and dimensioned for sliding engagement with the slideway (14), the slider (22) also preferably being operable to be releasably secured at any position alon g the slideway.
Patent CA-2487069-A1 (CA)
Title: Pole assembly for a mesh fence and mesh fence having a pole assembly
Inventor: WILSON JAMES G
IPC: E04H17/16
Filed: 2004-11-05
Abstract: A mesh fence including a mesh, and a pole assembly secured to the mesh.   The pole assembly includes a receiving member with a channel and a retaining member, at least a portion of the retaining member being dimensioned to be received in the channel of the receiving member together with a segment of the mesh retained in the channel. An anchoring device is also disclosed for securing a fence pole to a surface. Another aspect of the invention is a method for assembling a mesh fence.
Patent CA-2489219-A1 (CA)
Inventor: QUI YANPING
IPC: B32B1/08
Filed: 2004-12-03
Abstract: Paperboard support posts are formed by linearly advancing paperboard plies to a mandrel and wrapping the plies about the mandrel with the ply edges parallel to the mandrel axis, the plies being adhered together to form a tube that is linearly advanced along the mandrel and then cut into desired lengths. In one embodiment, the tube is a multi-grade structure having one or more relatively low-grade plies in the middle of the tube wall and relatively higher-grade plies toward the inside and outside of the tube. In another embodiment, one or more intermediate plies are embossed or corrugated to increase their effective caliper.
Patent CA-2489622-A1 (CA)
Inventor: WATTS RAYMOND F
IPC: C10M137/16
Filed: 2004-12-09
Abstract: Reaction products of maleic and/or succinic acids or anhydrides and primary aliphatic amines are disclosed as effective in reducing the static friction in power transmission fluids.
Patent CA-2491245-A1 (CA)
Title: Dispositif de commande a deplacement d'un element de fermeture pour vehicule
Inventor: RESEGUIER JOEL
IPC: B64C1/14
Filed: 2004-12-16
Abstract: La présente invention concerne un dispositif de commande à déplacement d'un élément de fermeture pour véhicule, caractérisé en ce qu'il comprend, intercalés entre le châssis d'un véhicule et un élément de fermeture, d'une part un élément moteur (200) actif sur commande, constitué d'un vérin pyrotechnique, et d'autre part, des moyens de liaison mécanique (250) adaptés pour autoriser une liaison motrice entre le vérin pyrotechnique (200) et l'élément de fermeture (10) lors d'une activation du vérin pyrotechnique (200), tout en autorisant un libre déplacement de l'élément de fermeture (10) par rapport au vérin pyrotechnique (200); lorsque l'élément de fermeture (10) est déplacé sur une course supérieure à celle permettant ladite liaison motrice.
Patent CA-2493431-A1 (CA)
Title: Undulating well bore
Inventor: ZUPANICK JOSEPH A
IPC: E21B7/04
Filed: 2003-07-11
Abstract: In accordance with one embodiment of the present invention, a subterranean drainage pattern for accessing a subterranean zone includes at least one undulating well bore. The undulating well bore includes at least one inclining portion drilled through the subterranean zone at an inclination sloping toward an upper boundary of the single layer of subterranean deposits and at least one declining portion drilled through the subterranean zone at a declination sloping toward a lower boundary of the single layer of subterranean deposits.  At least one bending portion couples the at least one inclining portion and the least one declining portion to form a waveform.
Patent CA-2495162-A1 (CA)
Title: Methods and apparatus for reducing sulfur impurities and improving current efficiencies of inert anode aluminum production cells
Inventor: LACAMERA ALFRED F
IPC: C25C3/06
Filed: 2002-08-05
Abstract: Methods and apparatus are disclosed for reducing sulfur impurities in aluminum electrolytic production cells (10, 20, 30, 40, 50) in order to significantly increase current efficiency of the cells. An impurity reduction zone may be created in the bath (13) of an inert anode (16a, 16b) cell by submerging a purifying electrode (17, 37, 47) in the bath (13). In another embodiment, an oxygen barrier tube (52), may be disposed in a portion of the bath (13). In a further embodiment, reductants such as aluminum, CO and/or CO2 are added to the bath (13). In another embodiment, electrode current is interrupted or electrodes are removed from selected regions of the cell (10, 20, 30, 40, 50) in order to allow gaseous impurities to escape from the bath (13). Sulfur impurity levels may also be reduced in inert anode cells (62) by scrubbing bath emissions (66) from the cell (62) before they are reintroduced into the cell (62), and by controlling sulfur impurity contents of materials (82) added to the cell (62).
Patent CA-2497303-A1 (CA)
Title: Three-dimensional well system for accessing subterranean zones
Inventor: ZUPANICK JOSEPH A
IPC: E21B43/30
Filed: 2003-09-09
Abstract: A drainage system for accessing multiple subterranean zones (20A, 20B, 20C) from the surface includes an entry well (30) extending from the surface. The system also includes two or more exterior drainage wells (40) extending from the entry well through the subterranean zones. The exterior drainage wells each extend outwardly and downwardly from the entry well for a first selected distance and then extend downwardly in a substantially vertical orientation for a second selected distance.
Patent CA-2499180-A1 (CA)
Inventor: ENGLAND SAM ROBERTSON
IPC: E03D1/34
Filed: 2003-08-28
Abstract: A cistern outlet valve mounting bracket assembly (10). The assembly includes first and second bracket members (12, 14) adapted for positioning about an outlet valve (20) in engagement with each other and the valve (20). The members (12, 14) also have means (28, 32) to allow fixing of the engaged members (12, 14) to a cistern (38). A method of installing an outlet valve (20) in a cistern (38) is also disclosed.
Patent CA-2500267-A1 (CA)
Inventor: CARVELLI ROBERT
IPC: H04M3/493
Filed: 2005-03-10
Abstract: A method for placing a telephone call from a caller using a prepaid phone card includes the steps of connecting a caller with a caller interface having a speech recognition application, receiving voice input from the caller in the form of phone card information spoken by the caller, comparing the voice input from the caller with personalized prepaid phone card information previously stored in a database and placing a requested telephone call if the voice input from the caller matches the personalized prepaid phone card information stored in the database. The personalized prepaid phone card information stored in the database may be a personal identification number (PIN) assigned to the caller's phone card and the voice input from the caller is in the form of a personal identification number (PIN) spoken by the caller. The speech recognition application then compares the spoken personal identification number with the personal identification number (PIN) stored in the database. The method may further include the step of retrieving a telephone number stored in the database if a voice input from the caller matches a telephone number identifier assigned to the telephone number.
Patent CA-2500849-A1 (CA)
Title: Data detection and demodulation for wireless communication systems
Inventor: WALTON J RODNEY
IPC: H04J99/00
Filed: 2003-10-24
Abstract: Techniques for detecting and demodulating data transmissions in wireless communication systems. In one aspect, a decision-directed detector detects f or data transmissions in a received signal by utilizing received data symbols a s well as received pilot symbols. The decision-directed detector may be design ed to perform differential detection in the frequency domain or coherent detection in the time domain, and may be used with multi-carrier modulation (e.g., OFDM). In another aspect, an adaptive threshold is used to perform detection of received data transmissions. A threshold may be determined for each data transmission hypothesized to have been received. The threshold may be computed, for example, based on the signal plus noise energy of the hypothesized data transmission.
Patent CA-2501649-A1 (CA)
Inventor: ENGELEN WIM
IPC: B05B11/00
Filed: 2003-10-06
Abstract: L'invention concerne un distributeur qui comprend un contenant (A) destiné à contenir un produit à distribuer, et un mécanisme de distribution (B). Ce distributeur comprend: (i) un corps (Q) de contenant présentant un fond (E), et un moyen permettant d'interconnecter ledit fond à un côté opposé de ce dernier; ledit corps du contenant comprenant en outre au moins une ouverture (F) de sortie montée dans le côté opposé audit fond ou à proximité de celui-ci, de préférence dans la moitié supérieure du moyen interconnectant le fond au côté opposé de ce dernier ou à proximité de celle-ci; (ii) un conduit (G) s'étendant depuis l'ouverture (F) de sortie, qui relie ledit corps du contenant audit mécanisme de distribution; (iii) un pulvérisateur (H) à détente; et (iv) un col (K) reliant ledit pulvérisateur (H) à détente audit conduit (G). Le col (K) et le conduit (G) sont raccordés audit corps (Q) du contenant de façon que ces deux parties forment un col de cygne ou un U s'étendant depuis ladite ouverture (F) de sortie afin d'échanger une pression d'air et le produit à distribuer.
Patent CA-2504064-A1 (CA)
Inventor: FIDELER BRIAN
IPC: H04R25/02
Filed: 2005-04-11
Abstract: A method and apparatus for a modular hearing aid for a user having a hearing canal, including a housing adapted to fit within at least a portion of the hearing canal, and having at least one access port, a cover adapted for at least partially covering the at least one access port, and signal processing electronics connected to a microphone and a power supply. In various examples, a microphone housing is adapted to mount to the housing and to fit within the at least one access port, and to connect to the microphone, the signal processing electronics and the power supply. In one variant, the apparatus includes a receiver connected to the signal processing electronics, and a fastener as a unitary connector of the cover and microphone housing to the housing. Other variations are presented herein.
Patent CA-2505230-A1 (CA)
Title: Method and apparatus using movable barrier zones
Inventor: WILLMOTT COLIN
IPC: E05F15/20
Filed: 2005-04-26
Abstract: Multiple zones (21, 22, 23) are established with respect to the travel of a movable barrier over a course of permitted movement (typically between a fully open and a fully closed position). By detecting and knowing the juxtaposition of the movable barrier with a given one of these zones, a particular direction of movement for that movable barrier can be automatically selected notwithstanding possible ignorance regarding the exact position of the movable barrier due to, for example, one or more triggering conditions (such as momentary disconnection of the movable barrier with respect to its motive mechanism). Such zones are particularly efficacious when employed in conjunction with passpoint-based position determination movable barrier operator systems.
Patent CA-2506981-A1 (CA)
Inventor: AZZARELLO FRANCIS T
IPC: B65D43/02
Filed: 2003-11-04
Abstract: A child proof and tamper evident container (C) includes a pail (10) and a screw top cover (12) screwed onto the top of the pail to enclose contents of the pail. A latching mechanism (18) is formed on the pail. A plurality of tamper evident tabs (26) and second a child proof tab (14) are formed on the cover. Both types of tabs means engage the latching mechanism as the cover i s screwed onto the pail,. The one tab provides an indication as to whether or not the contents of the container have been tampered with, and the second ta b prevents a child from removing the cover and opening the container.
Patent CA-2507001-A1 (CA)
Inventor: HAMON CHRISTIAN
IPC: B01J21/06
Filed: 2003-11-27
Abstract: Method of decomposing nitrous oxide (N2O) into nitrogen and oxygen at a temperature between 700 and 1000 degreesC and at high VVH (volumetric time speeds) in the presence of a catalyst containing a mixed oxide of zirconium and cerium in the form of a solid solution  The catalyst has an effective specific surface greater than 25 m2/g, preferably between 60 and 150 m2/g, and the process takes place at a VVH between 30000 and 80000 h-1. The ratio by mass of ZrO2/CeO2 in the catalyst is between 80/20 and 20/80, preferably between 70/30 and 30/70. The catalyst also contains yttrium.
Patent CA-2508459-A1 (CA)
Inventor: PALASIS MARIA
IPC: A61F2/00
Filed: 2003-12-03
Abstract: L'invention concerne d'une manière générale des dispositifs médicaux et, plus précisément, ceux que l'on peut au moins partiellement introduire ou implanter dans le corps du patient. Les dispositifs médicaux comprennent généralement (a) un agent thérapeutique, plus généralement, un agent thérapeutique de masse moléculaire élevée, et (b) au moins une couche polymère qui, généralement, agit de manière à commander la libération de l'agent thérapeutique du dispositif médical. L'invention concerne en outre des procédés de fabrication de tels dispositifs médicaux.
Patent CA-2509410-A1 (CA)
Title: Wood arch frame system
Inventor: ESTEVERENA ALEJANDRO H
IPC: E04C3/42
Filed: 2005-07-08
Abstract: The wood arch frame system comprises a plurality of arch-shaped frames, which are parallel to each other and separated by specific bay lengths, or radially distributed at specified angles, and in either case are laterally supported by wood purlins, which are transversal to the frames. The main purpose is to provide an economical solution for agricultural buildings and is intended for the construction of barrel vaults or round-type buildings that can be covered by fabric, steel cladding, or plywood and shingles. These frames are assembled by interconnecting segments, which are comprised of curved or linear lower and upper chords joined together by a vertical web panel. Chords are made from wood, usually of the spruce-pine-fir type, and the web panel of plywood or oriented strand board (OSB). Adjacent segments are interconnected using steel straps bolted to the chords and plywood web connectors bolted at both sides of each connection.
Patent CA-2511641-A1 (CA)
Title: Container carrier
Inventor: ECKERMANN JENS
IPC: B65D71/68
Filed: 2003-11-06
Abstract: A container carrier made of at least one foldable flat material, comprising: - a box-shaped carrying container having a bottom wall, side walls, end walls, and an upper-sided opening, - a middle wall disposed between the side walls in the carrying container, with folded-out transverse flaps which define compartments for the containers, - a carrying handle disposed at the top of the middle wall and projecting from the opening of the carrying container, and - at least one longitudinal flap hinged to the middle wall which is turned into at least one opening of the middle wall that is formed by folding out the transverse flaps and closes them at least partially.
Patent CA-2512444-A1 (CA)
Title: Screening method of agents for improving the memory and learning
Inventor: MOCHIZUKI SHINOBU
IPC: C12N1/19
Filed: 2004-01-16
Abstract: A screening tool and a screening method for obtaining a substance which is useful as a memory improving agent, a learning ability improving agent and/or an antidementia agent; a polypeptide, a polynucleotide, a vector and cells which are usable in the above screening; and a novel memory improving agent, a learning ability improving agent and/or an antidementia. The screening tool as described above comprises a calcium-permeable nonselective cation channel or cells expressing the same.
Patent CA-2512574-A1 (CA)
Title: Generalized two-stage data estimation
Inventor: GRIECO DONALD M
IPC: H04B1/707
Filed: 2004-01-08
Abstract: Symbols are to be recovered from signals received in a shared spectrum. Codes of the signals received in the shared spectrum are processed using a block Fourier transform (FT 34), producing a code block diagonal matrix. A channel response of the received signals is estimated. The channel response is extended and modified (36) to produce a block circulant matrix and a block FT  (38) is taken, producing a channel response block diagonal matrix. The code block diagonal matrix is combined (40, 44, 46) with the channel response block diagonal matrix. The received signals are sampled and processed using the combined code block diagonal matrix and the channel response block diagonal matrix with a Cholesky algorithm. A block inverse FT (60) is performed on a result of the Cholesky algorithm to produce spread symbols. The spread symbols are despread to recover symbols of the received signals.
Patent CA-2512920-A1 (CA)
Title: Method for the time- and frequency-domain synchronisation of multiple devices in a transmission system with ofdm modulation
Inventor: IRANZO MOLINERO SALVADOR
IPC: H04L27/26
Filed: 2004-01-08
Abstract: A system for determining a frequency error of an orthogonal frequency division multiplexing (OFDM) signal having a first frequency. The system includes a plurality of filters configured to output a plurality of second signals, each of the plurality of second signals corresponding to a respective one of a plurality of different frequency bands of the OFDM signal. Each of the plurality of second signals includes a corresponding synchronization symbol associated with the OFDM signal. A Fourier transform circuit is configured to receive the plurality of second signals from each of the plurality of filters and output the plurality of second signals. The system is configured to determine the frequency error of the OFDM signal based on the synchronization symbols of the plurality of second signals.
Patent CA-2512957-A1 (CA)
Inventor: HUNG CHI-HSUAN
IPC: G06F1/16
Filed: 2005-07-22
Abstract: A common lock used in a dual-usage portable computer formed of a base member and a display is disclosed to include an elongated operating frame bar longitudinally slidably mounted inside the display of the portable computer, a left-side frame and a right-side frame respectively fixedly mounted inside the display, a left-side hook coupled between the left end of the elongated operating frame bar and the left-side frame for locking the display to the base member when the computer is set in the form of a notebook computer, and a right-side hook coupled between the right end of the of the elongated operating frame bar and the left-side frame for locking the display to the base member when the computer is set in the form of a tablet PC.
Patent CA-2519382-A1 (CA)
Title: Noise reducing combustor
Inventor: ALKABIE HISHAM
IPC: F23M20/00
Filed: 2004-04-15
Abstract: The combustor comprises inner and outer walls spaced-apart by a predetermine d spacing distance and defines a cavity there between. The outer wall has at least an impingement aperture therein permiting fluid flow communication between the compressor and the cavity. The inner wall defines a plurality of effusion apertures therein permitting fluid flow communication between the cavity and the combustion zone, and each of the effusion aperture defines a cross-sectional area smaller than that of the impingement aperture. The effusion apertures are disposed in groups having a predetermined geometric arrangement relative to the impingement aperture and define a ratio of numbe r of effusion apertures to the impingement aperture of between about 2:1 and about 4:1. The combustor thereby provides damping of audible frequencies les s that about 1600 Hz passing therethrough.
Patent CA-2521368-A1 (CA)
Title: Method and apparatus for burst disk identification
Inventor: MIRKOVIC VESNA R
IPC: H01M8/00
Filed: 2004-03-30
Abstract: The present invention provides a method and apparatus for identifying an activation of a burst disk. A pressure data or a temperature data relating to a flow is received. A determination is made whether the flow is interrupted based upon the at least one of the pressure data and the temperature data. A  burst disk activation is identified in response to determining that the flow is interrupted.
Patent CA-2523550-A1 (CA)
Title: Doors and methods of producing same
Inventor: REDDING DAVID R
IPC: B28B1/14
Filed: 2004-04-28
Abstract: One aspect of the present invention is directed to a door, and more specifically, to a door that includes a web and a rigid foamed core. In one embodiment, a door is disclosed which comprises a door shell having a generally planar construction with marginal edges and first and second door skins helping to define an interior door cavity, a web disposed within the interior door cavity, and a rigid foamed cementitious core disposed within the interior door cavity and cooperating with the web.