baber/WOPTO huggingface dataset:
Patent CA-2264137-C (CA)
Title: Process for concurrent selective hydrogenation of acetylenes and 1,2 butadiene in hydrocarbon streams
Inventor: HEARN DENNIS
IPC: C07C7/167
Filed: 1997-08-28
Granted: 2006-02-21
Abstract: A process for the removal of vinylacetylene, ethylacetylene and 1,2-butadien e from C4 aliphatic hydrocarbon streams comprising, concurrently: (1) feeding hydrogen and a hydrocarbon stream comprising C4 hydrocarbons including butanes, butenes, butadienes and vinylacetylene to a distillation column reactor containing a bed comprising a hydrogenation catalyst of the type characterized by platinum, palladium or rhodium which is prepared as a distillation structure to selectively hydrogenate a portion of the vinylacetylene and the 1,2- butadiene and (2) fractionally distilling the reaction mixture to remove a heavier fraction and removing a fraction overhead comprising substantially all of the C4.
Patent CA-2266018-C (CA)
Title: Optimized routing of terminating calls within a mobile telecommunications network
Inventor: PATEL MAHESH
IPC: H04W8/10
Filed: 1997-09-15
Granted: 2005-08-23
Abstract: A call setup signal is routed to the gateway mobile switching center (GMSC) serving a public land mobile network (PLMN) associated with a called mobile station. The GMSC then sends a signal including data identifying the originating switch to the home location register (HLR) associated with the called mobile station. Upon determining that it would be more efficient and direct for the originating switch to release the first call connection to the GMSC and to re-originate a new call setup signal directly towards the mobile switching center (MSC) currently serving the called mobile station, the HLR transmits a Mobile Application Part (MAP) based signal to the originating switch. As a result the originating switch releases the original call connection and re-originates a call setup signal using a roaming number identifying the MSC currently serving the mobile station as a destination address.
Patent CA-2267155-C (CA)
Inventor: RENNIE IAN
IPC: C12Q1/6883
Filed: 1997-10-09
Granted: 2003-07-08
Abstract: Méthode et trousse permettant de prédire un risque accru de rétinopathie diabétique avec risque d'atteinte de la vision, qui comportent l'isolement de l'ADN génomique à partir d'un échantillon prélevé chez un patient diabétique. Le motif de polymorphisme génétique pour les gènes IL-1A, IL-1B et IL-1RN est ensuite identifié dans l'ADN. Le motif identifié est comparé à des motifs témoins de polymorphismes connus, ce qui permet d'identifier les patients exprimant un motif associé à un risque accru de rétinopathie diabétique avec risque d'atteinte de la vision.
Patent CA-2273295-C (CA)
Inventor: SESHADRI NAMBIRAJAN
IPC: H04B7/06
Filed: 1998-10-06
Granted: 2003-12-16
Abstract: Block-encoded transmissions of a multi-antenna terminal unit are effectively detected in the presence of co-channel interfering transmissions from other multi-antenna terminal units, when the base station has a plurality of antennas, and interference cancellation is combined with maximum likehood decoding. The signals received in one base station antenna are employed in processing the signals received in a second base station antenna so as to cancel the signals of one terminal unit, while decoding the signals transmitted by the other terminal unit. Zero-forcing and MMSE approaches are presented. In another embodiment of the invention, the basic decoding approach is used to obtain an initial estimate for the symbols from each terminal.  Assuming that the signals of the first terminal unit has been decoded correctly, the receiver employs this initial decoded signal of the first terminal unit to cancel their contribution to the signals received at the base station antennas while decoding the signals of the second terminal unit. This process is then repeated assuming that the signals of the second terminal unit have been decoded correctly; the receiver employs this initial decoded signal of the second terminal unit to cancel their contribution to the signals received at the base station antennas while decoding the signals of the first terminal unit. The above disclosed techniques are variable for any number K of terminal units concurrently transmitting over a given channel, where each terminal unit is using a space-time block code with N transmit antennas, and a base station has at least K receive antennas.
Patent CA-2274272-C (CA)
Title: Packaging a strip of material
Inventor: MOL DARRELL VAN
IPC: B65D85/07
Filed: 1998-06-17
Granted: 2000-04-18
Abstract: A package of a continuous strip of material comprises a plurality of parallel side by side stacks each containing a length of the strip which is folded back and forth such that each folded portion of the stack is folded relative to the next portion about a line transverse to the strip and such that the side edges of the strip portions are aligned. The strip is continuous through each stack and is connected by a splice from the end of one stack to beginning of the next stack. The package is compressed to reduce the height of the stacks and maintained in the compressed condition by an evacuated sealed bag. The preferred package arrangement uses the package for pay off of the strip in the orientation in which it is formed with the bottom of the stacks resting on a support and the package tilted to one side so that the stacks lean against a support surface for stability. The spliced connecting portions extend along one end of the package and are folded to take up the difference in height between the compressed condition and the released condition for unfolding. A spacer plate prevents the connecting portions from being wrinkled against the end of the package under the compression from the bag.
Patent CA-2276474-C (CA)
Inventor: EYRE RONALD K
IPC: E21B10/56
Filed: 1999-06-25
Granted: 2006-09-05
Abstract: The present invention provides a cutting element having a cylindrical body having a canted end face on which is formed an ultra hard material layer. One or a plurality of transition layers may be provided between the ultra hard material layer and the cutting element body.
Patent CA-2279329-C (CA)
Inventor: MICHNICK STEPHEN WILLIAM WATSON
IPC: G01N33/58
Filed: 1998-02-02
Granted: 2013-05-21
Abstract: We describe a strategy for designing and implementing protein-fragment complementation assays (PCAs) to detect biomolecular interactions in vivo and in vitro. The design, implementation and broad applications of this strategy are illustrated with a large number of enzymes with particular detail provided for the example of murine dihydrofolate reductase (DHFR). Fusion peptides consisting of N and C-terminal fragments of murine DHFR fused to GCN4 leucine zipper sequences were coexpressed in Escherichia coli grown in minimal medium, where the endogenous DHFR activity was inhibited with trimethoprim. Coexpression of the complementary fusion products restored colony formation. Survival only occurred when both DHFR fragments were present and contained leucine-zipper forming sequences, demonstrating that reconstitution of enzyme activity requires assistance of leucine zipper formation. DHFR fragment-interface point mutants of increasing severity (Ile to Val, Ala and Gly) resulted in a sequential increase in E. coli doubling times illustrating the successful DHFR fragment reassembly rather that non-specific interactions between fragments. This assay could be used to study equilibrium and kinetic aspects of molecular interactions including protein-protein, protein-DNA, protein-RNA, protein-carbohydrate and protein-small molecule interactions, for screening cDNA libraries for binding of a target protein with unknown proteins or libraries of small organic molecules for biological activity. The selection and design criteria applied here is developed for numerous examples of clonal selection, colorometric, fluorometric and other assays based on enzymes whose products can be measured. The development of such assay systems is shown to be simple, and provides for a diverse set of protein fragment complementation applications.
Patent CA-2283150-C (CA)
Title: Printed circuit board for electrical devices having rf components, particularly for mobile radio telecommunication devices
Inventor: BUSCH GEORG
IPC: H05K3/42
Filed: 1997-03-12
Granted: 2003-09-30
Abstract: Printed circuit board for electrical devices having RF components, particularly for mobile radio telecommunication devices To increase the packing density of electronic circuits and conductor-track structures on printed circuit boards for electrical devices having RF components, particularly for mobile radio telecommunication devices, a "micro via" coating is initially applied to one or both sides of a printed circuit board assembly. This "micro via" coating then has, in particular, RF circuits and RF conductor-track structures applied to at least part of its surface. Finally, the RF circuits and RF conductor-track structures are protected in relation to an RF ground coating of the printed circuit board assembly by barrier areas arranged in an assembly coating, situated directly below the "micro via" coating, of the printed circuit board assembly against interfering influences which impair the RF parameters, to be set in each case, of the RF circuits and RF conductor-track structures.
Patent CA-2288265-C (CA)
Inventor: BARRY DAVID BRUCE
IPC: F16L9/12
Filed: 1998-04-21
Granted: 2007-06-19
Abstract: The invention relates to the production of high performance conduits. The invention includes the high performance conduits, the polyethylene resin used to make them, and the process for producing the resin which produces a resin with properties which are required, in accordance with the invention to yield the performance characteristics of the resin in conduits. The resin used in accordance with the invention exhibits a bimodal molecular weight distribution or broad molecular weight distribution and is of high molecular weight. ~
Patent CA-2292654-C (CA)
Title: Cross-linked nylon block copolymers
Inventor: ACQUARULO LAWRENCE A JR
IPC: A61F2/958
Filed: 1998-05-06
Granted: 2004-07-13
Abstract: A cross-linked nylon block copolymer comprising a copolymer containing a polyamide block and an elastomeric block, irradiation cross-linked, including a compound which promotes cross-linking therein. In process form, the present invention comprises supplying a nylon block copolymer, containing a polyamide block and an elastomeric block, along with cross-linking promotor and exposing the block copolymer to irradiation, sufficient to cross-link the copolymer and improve mechanical properties therein. The cross-linked nylon block copolymers here have particular utility in both the medical and wire and cable industries.
Patent CA-2296462-C (CA)
Inventor: CHIN SEO YONG
IPC: H04M1/253
Filed: 1998-07-21
Granted: 2003-01-28
Abstract: A cellular telephone with a voice dialing function effectively manages a voice recognition memory. The cellular telephone is capable of being connected to a hands-free kit, and has a voice recognition device for extracting feature data from an input voice signal so as to recognize the voice signal and a memory for storing the extended feature data. The memory is divided into a first storage area for storing the feature data input from the cellular telephone, a second storage area for storing the feature data input from the hands-free kit, and a third storage area for storing voice playback data. The third storage area includes a storage region for storing the voice playback data and another storage region for storing a telephone number associated with the voice playback data.
Patent CA-2299826-C (CA)
Title: Support structure for a canopy of a trailer
Inventor: PRIESGEN TONY P
IPC: B60J7/08
Filed: 2000-03-02
Granted: 2007-05-22
Abstract: A support structure is provided for supporting a canopy on a trailer. The support structure includes a first support arm having a first end pivotably connected to the canopy and a second pivotably connected to the first end of an intermediate support arm. The second end of the intermediate support arm is pivotably connected to the first end of a third support arm. The second end of the third support arm is pivotably connected to the trailer. First and second pneumatic springs are also provided. First pneumatic spring interconnects the first support arm and intermediate arm and the second pneumatic spring interconnects the intermediate support ann and the third support arm. The pneumatic springs assist an operator in lifting the canopy and provides sufficient force to maintain the canopy in an open position.
Patent CA-2302942-C (CA)
Inventor: REZAIIFAR RAMIN
IPC: H04W48/12
Filed: 1998-09-16
Granted: 2009-02-03
Abstract: L'invention concerne une structure de voies pour système de communication dans laquelle il existe deux séries de voies physiques, une pour la liaison aller (50) et une autre pour la liaison retour (52). On utilise les deux séries en question pour faciliter la communication sur un certain nombre de voies logiques. Les voies physiques comprennent des voies de données et des voies de commande. Dans l'exemple considéré, les voies de données comprennent des voies fondamentales utilisées pour le trafic téléphonique, le trafic de données et la transmission de données à grande vitesse, et autres informations de service, mais aussi des voies supplémentaires utilisées pour la transmission de données à grande vitesse. Il est possible de libérer les voies fondamentales lorsque les stations éloignées sont au repos, de manière à tirer parti plus pleinement de la capacité disponible. Les voies de commande sont utilisées pour la radiomessagerie, la transmission des messages de commande et la transmission des données relatives à l'ordonnancement.
Patent CA-2305610-C (CA)
Inventor: BULLOCK ROBERT L
IPC: B61F5/02
Filed: 2000-04-12
Granted: 2007-01-02
Abstract: A rail car truck has a pair of longitudinally spaced wheelsets and a pair of laterally spaced side frames which extend between and are supported by the wheelsets. A bolster extends between the side frames to support the rail car vehicle body.  There is a brace which is connected to the side frames to control relative longitudinal movement therebetween. The brace includes a pair of struts which are diagonally connected to the side frames on opposite sides of the centerline thereof. The struts intersect generally centrally of the side frames and there is a clamp assembly for attaching the struts together. The clamp assembly includes a pair of clamp plates, each having a channel formed and adapted to receive a strut. Each clamp plate channel terminates at opposite ends of the clamp plate, with each clamp plate channel having a generally U-shaped opening. Each clamp plate is welded to a strut along the generally U-shaped openings thereof. There are fasteners which attach the facing surface of the clamp plates directly to each other. The clamp plates are welded, one to another. The clamp plate assembly inhibits relative movement between the struts in a generally horizontal plane.
Patent CA-2311222-C (CA)
Inventor: DILORENZO NICK
IPC: E04B1/04
Filed: 2000-06-09
Granted: 2008-08-05
Abstract: A concrete building panel has a slab and a plurality of ribs and beams. A series of horizontal holes in the end ribs are spaced at a selected constant spacing such that adjacent panels may be fastened together through them. In one type of panel, the slab is separated from the ribs to provide an air gap. Connections between holes in two adjacent concrete wall panels are made by a hollow conduit having an abutment at either end to engage the concrete wall panels. Other connections between adjacent panels involve a stitch with legs which extend through holes in the beams. Other connections involve a space made by vertical channels of horizontally adjacent panels. A plate fitted into the space aligns the adjacent panels and may extend upwards to align upper panels. Load bearing horizontal holes through the ribs are reinforced with reinforcing bar in the concrete arranged in generally triangular shapes. The concrete panels are formed in a form with sub-forms aligned by rods which create horizontal holes of the desired size and placement when removed.
Patent CA-2311434-C (CA)
Inventor: FENG KAI D
IPC: H03K17/785
Filed: 2000-06-13
Granted: 2004-10-19
Abstract: A photoelectric receiver circuit provides a symmetrical sensor having a transimpedance amplifier on each side of the PIN diode, the outputs of the transimpedance amplifiers being AC coupled to a differential post amplifier. The differential structure provides a very high common noise voltage rejection ratio and a virtual ground to the inverting inputs of the transimpedance amplifiers. In the preferred embodiment a differential PIN diode bias voltage is established by separate bias voltages respectively applied to the non-inverting input of each transimpedance amplifier. Thus, a low-noise voltage regulator can be used to supply power to the bias voltages in the invention, and the AC coupling capacitors can be very small to conserve space on the chip die. Auxiliary DC currents applied to both sides of the PIN diode maintain the PIN diode bias as high as possible and maximize the output swing ranges of the transimpedance amplifiers in order to retain a wide bandwidth. The DC current sources allow the output bias voltages of the transimpedance amplifiers to be adjusted, and when controlled by the transimpedance amplifier outputs through a low pass filter, the output bias offset caused by ambient light can be eliminated. The feedback resistors may be variable resistors to provide automatic gain control.
Patent CA-2313762-C (CA)
Title: Process for the catalytic steam reforming of a hydrocarbon feedstock
Inventor: ROSTRUP-NIELSEN THOMAS
IPC: C01B3/38
Filed: 2000-07-12
Granted: 2009-09-01
Abstract: Process for the catalytic steam reforming of a hydrocarbon feedstock including the steps of pre-reforming a hydrocarbon steam mixture in contact with a first steam reforming catalyst being arranged in an externally heated pre-reformer in a flue gas channel from a fired steam reformer, and contacting pre-reformed effluent from the pre-reformer with a second steam reforming catalyst in a fired steam reformer, which process includes the further step of contacting the pre-reformed effluent with a third steam reforming catalyst being arranged outside the flue gas channel downstream the externally heated steam reformer.
Patent CA-2314114-C (CA)
Title: Improved rock drill bit with neck protection
Inventor: RICHMAN LANCE T
IPC: E21B10/08
Filed: 2000-07-18
Granted: 2007-04-10
Abstract: A drill bit for boring a bore hole in an earthen formation comprises a bit body having a pin end, a cutting end and a longitudinal axis and including at least two legs extending from the cutting end, each of the legs including a leading side surface, a trailing side surface, and a shoulder, each of the legs further including a bearing and a cutter cone rotatably supported on the bearing, and the bit body further including a fluid flow system, including a flowway in said pin end, the flowway being in fluid communication with at least one exit port in the cutting end, the bit body further including a neck between the shoulders and the pin end and a hard, wear- resistant material on at least a portion of the neck.
Patent CA-2322755-C (CA)
Title: Network device and information representation using objects
Inventor: KAWAMURA HARUMI
IPC: G06F13/38
Filed: 1999-03-09
Granted: 2004-08-31
Abstract: Object lists and object entries provide a general hierarchical model for representing functions and capabilities of a network of devices in a uniform standardized format. The object lists and object entries are used to represent devices, subdevices, supported media, installed media and available services. Preferably, the devices are coupled together in an IEEE 1394-1995 serial bus network. The list of devices within the network are included within a unit object list, including unit object descriptors each representing a corresponding device. For devices having subunits, the unit object descriptor is associated with a subunit object list, including subunit object descriptors each representing a corresponding subunit within the device. Each subunit object descriptor then also has associated object lists, as appropriate, including a supported media object list including entries representing types of media supported by the subunit and an installed media object list including entries representing information available on the media currently installed within the subunit. For subunits capable of providing services, the subunit object descriptor has an associated object list, including an available services list including entries representing the services currently available through the subunit. The uniform standardized format of the object lists and object entries of the present invention allow two devices coupled together within the IEEE 1394-1995 serial bus network to exchange information including their respective object lists and entries.
Patent CA-2325608-C (CA)
Inventor: DOLAN DONALD T
IPC: G01B7/06
Filed: 1989-11-29
Granted: 2002-01-22
Abstract: In a mail handling machine, mail thickness measuring apparatus associated with a singulator mechanism for measuring mail thickness as soon as individual mail pieces are separated by the singulator from a stack of mail pieces.
Patent CA-2326873-C (CA)
Inventor: YAMASHITA TAKESHI
IPC: H04M1/50
Filed: 2000-11-24
Granted: 2004-11-02
Abstract: An arithmetic processing section is designed to repeatedly execute product-sum arithmetic processing a number of times equal to the number of samples corresponding to each of the frequencies, in which a value obtained by subtracting a product-sum arithmetic value two sampling periods before from an input signal and a value obtained by multiplying a product-sum arithmetic value one sampling period before by a coefficient corresponding to a reference frequency contained in a DTMF signal are added. A comparator extracts an output value equal to or larger than a predetermined threshold value from the product-sum arithmetic values obtained by the arithmetic processing section. A matrix section determines the type of DTMF signal on the basis of at least two output values extracted by the comparator.
Patent CA-2327615-C (CA)
Title: Substance system
Inventor: GUSE DIETER
IPC: C09J175/02
Filed: 1999-01-29
Granted: 2006-12-05
Abstract: A one-component dispersion comprising deactivated isocyanates which cross-links already at low temperatures (lower than 70 °C).
Patent CA-2329376-C (CA)
Inventor: BARBER PETER M
IPC: A47B97/00
Filed: 2000-12-21
Granted: 2007-07-03
Abstract: An improved brake and tilt adjustment control mechanism for a keyboard support platform includes a telescoping shaft connect between the keyboard platform and a housing supported on linkage arms that support the platform and connected the platform to a desk or support surface. The shaft is engaged by an encircling coil spring retained in the housing to lock the mechanism. Flexing the spring releases the locking mechanism and permits adjustment of the tilt or attitude of the keyboard platform relative to the linkage arms.