baber/WOPTO huggingface dataset:
Patent CA-2267887-C (CA)
Inventor: TANKE ROBIN S
IPC: C07C51/12
Filed: 1997-10-17
Granted: 2007-01-09
Abstract: Disclosed is a method to manufacture high purity acetic acid. Although described in relation to that produced by a low water carbonylation process the present invention is applicable to other mechanisms for production of acetic acid which results in formation of permanganate reducing compounds such as acetaldehyde, propionic acid, and alkyl iodide impurities in intermediate process streams. It has been found that permanganate reducing compounds and alkyl iodides may be conveniently removed from a light phase of an intermediate stream in the reaction process by employing a multiple distillation process coupled with an optional extraction of acetaldehyde. The distillation process involves first distilling a light phase to concentrate the permanganate reducing compounds, and in particular the acetaldehyde, and then separating the permanganate reducing compounds and alkyl iodides in a second distillation tower. The second distillation serves to remove the permanganate reducing compounds and alkyl iodides from methyl iodide, methyl acetate, and methanol mixture. As an optional third step, the twice distilled stream may be directed to an extractor to remove any remaining quantities of methyl iodide from the aqueous acetaldehyde stream to obtain acetic acid as a final product in greater than 99% purity.
Patent CA-2279640-C (CA)
Inventor: SUZUKI MAKOTO
IPC: B24B5/16
Filed: 1999-08-04
Granted: 2005-06-14
Abstract: A grinding body for on-line roll grinding, comprising a grindstone mounted in a cup shape on a surface portion, and near a peripheral edge, of a circular support base plate, wherein a peripheral edge portion of the circular support base plate has on a surface side thereof a two-layer structure including a flat ring-shaped portion jutting toward an inner periphery so as to define a groove opening inward; the grindstone is mounted on the flat ring-shaped portion; and a damping material is filled and mounted into the groove.        This grinding body can effectively prevent the formation of a spiral mark and a pitching surface mark, improve the grinding power and grinding accuracy, and prolong the life of the grindstone.
Patent CA-2281156-C (CA)
Title: Assembly for signal transfer between a receiving station and a transmitting station as well as for power supply of the transmitting station
Inventor: LALLA ROBERT
IPC: G08C19/02
Filed: 1999-08-30
Granted: 2002-07-09
Abstract: In an assembly for signal transfer between a receiving station (10) and a transmitting station (12) as well as for power supply of the transmitting station (12) in which these two stations are connected to each other via a two-wire line (14), an analog signal current variable between two limiting values is transmitted via this two-wire line, this signal current representing a measured value sensed by a sensor in the transmitting station (12). This current forms at the same time the supply current needed to operate the transmitting station (12). In the transmitting station (12) a circuit (24) is provided, generating a constant operating voltage for the transmitting station, the transmitting station including a controllable current source (34) which dictates the current flowing via the two-wire line (14) as a function of the measured value and which is fed from a supply voltage source (18) in the receiving station (10). The current regulator (34) is a series current regulator fed from the supply voltage source (18) in the receiving station (10). A charge pump (38) is connected to the output of the current source (34), the charge pump generating from the voltage appearing at the output of the current source (34) the operating voltage needed for operating the sensor (20) and a signal processing circuit (22) connected thereto. A parallel regulator (40, 42) for maintaining the input voltage or respectively the output voltage of the charge pump (38) constant is connected to the input and output respectively of the charge pump (38).      Fig. 2
Patent CA-2284030-C (CA)
Title: Composition polymere, sa preparation, et sa transformation ulterieure en recipients
Inventor: BEESE ULRICH
IPC: B29C48/16
Filed: 1999-01-08
Granted: 2004-08-10
Abstract: L'invention concerne une composition polymère, laquelle est caractérisée en ce qu'elle contient 0,01 à 10 % en poids, de préférence 0,05 à 2 % en poids par rapport à la composition totale, d'au moins un phénol, un mélange maître de polymère correspondant, ainsi que sa préparation et son utilisation.
Patent CA-2291868-C (CA)
Title: Interference canceling device
Inventor: SAKAMOTO HIRONORI
IPC: H04B15/00
Filed: 1999-12-01
Granted: 2005-02-15
Abstract: An interference canceling device comprising a flat phase IF narrow band BPF. A signal which hay been branched from a signal on the main line is filtered by the BPF and is recombined with the signal on the main line. Phase rotation caused by frequency separation from the pass band center frequency does not occur because the phase characteristics of the BPF are substantially flat in the pass band. Thus, interference existing not only in a pin-point frequency, but over a band of frequencies can be cancelled.
Patent CA-2292625-C (CA)
Inventor: MCLELLAND DOUGLAS M
IPC: B65D47/06
Filed: 1998-10-28
Granted: 2004-08-31
Abstract: Ce bec verseur souple (22), destiné à des contenants de matière, comprend une bague d'inviolabilité (26), le couvercle (12) du contenant étant moulé autour du bord périphérique (34, 56) du bec verseur et de la bague, afin de solidariser à la fois le bec verseur et la bague d'inviolabilité avec le couvercle; l'ensemble fermeture/bec verseur comprend généralement une ouverture de distribution ainsi qu'un élément de bouchon (24) destiné à fermer de manière sélective le bec verseur. La bague d'inviolabilité est reliée à l'élément de bouchon par une série d'éléments fragiles (52). A la fois le bec verseur et la bague d'inviolabilité présentent des bords périphériques (34, 56) moulés directement avec le couvercle du contenant, lors de la formation de ce couvercle. Le bec verseur et le bouchon, avec la bague d'inviolabilité, sont insérés dans le moule (100) du couvercle du contenant, leurs bords périphériques s'étendant de manière pivotante dans le moule du couvercle. Lors du moulage du couvercle, le plastique en fusion enveloppe ces bords, créant une liaison monobloc entre à la fois le bec verseur et la bague d'inviolabilité, et donc une double inviolabilité dans la fermeture du contenant. A la fois le moule et la fermeture préférée du contenant comprennent des caractéristiques structurelles qui empêchent le plastique en fusion de s'écouler entre les bords du bec verseur et ceux de la bague, supprimant ainsi toute déformation de la fermeture lors du moulage du couvercle du contenant, par réduction de la force du plastique en fusion, directement sur la fermeture.
Patent CA-2294756-C (CA)
Title: Cross-linked polysaccharide drug carrier
Inventor: LIU LINSHU
IPC: A61K31/715
Filed: 1998-07-01
Granted: 2008-04-29
Abstract: A carrier and a method for preparing it are provided for use in the delivery of therapeutic agents. A polysaccharide is reacted with an oxidizing agent to open sugar rings on the polysaccharide to form aldehyde groups. The aldehyde groups are reacted to form covalent oxime linkages with a second polysaccharide and each of the first and second polysaccharide is selected from the group consisting of hyaluronic acid, dextran, dextran sulfate, chondroitin sulfate, dermatan sulfate, kerat an sulfate, heparan, heparan sulfate and alginate.
Patent CA-2296515-C (CA)
Inventor: LEMIEUX YVES
IPC: H04Q11/04
Filed: 1998-06-26
Granted: 2008-01-22
Abstract: A stream of communications traffic (102) is processed by a time shifting disperser device (108). The device senses the burstiness (212) of the received stream of communications traffic and stores individual frames of the received stream of communications traffic for a specified time delay (204) calculated as function of the sensed burstiness. Following the calculated delay (214), the frame traffic is clocked out (206) from the device (102) to be combined with (added to) (110) other streams of communications traffic for transport over a shared media communications link (114). In instances where each of the plural strea ms of communications traffic are processed by an associated disperser device, individual time delays are calculated as function not only of the sensed burstiness but also of a delay determined by a transport network management (operation and maintenance) system (116) from noted correlations in bursts between the multiple streams of communications traffic. Coordination of the time shifting operation thus occurs so as to reduce burstiness correlation between the multiple streams of communications traffic.
Patent CA-2298025-C (CA)
Title: Row cleaner suspension
Inventor: JANELLE LUC
IPC: A01C7/00
Filed: 2000-02-01
Granted: 2003-01-07
Abstract: A row cleaner device for a furrow forming row unit includes a support arrangement with a parallel linkage having a single acting hydraulic cylinder connected between upper and lower links. The cylinder extension is controlled by a hydraulic circuit to provide adjustable down pressure to maintain consistent operation of the cleaner devices in varying ground conditions. A tensioning device such as a spring extending generally parallel to the cylinder acts to retract the cylinder. A blocking valve can be closed to maintain the cleaner device in the raised position and can lock the cylinder in any desired extended position. An energy storage device such as a spring compressed between the cylinder and one of the links permits limited vertical movement of the linkage without change of cylinder extension to protect the device and accommodate obstacles and ground surface irregularities in the path when the cylinder is locked in position. The cylinder can be controlled as a function of the position of the opener, and, can be controlled to raise the cleaner device automatically with raising of the row units. The row cleaner can be supported in various positions and can be controlled remotely. The cleaner can be conveniently raised to the non-operating position to avoid undesirable ground contact.
Patent CA-2300688-C (CA)
Inventor: MOCHIZUKI ISAO
IPC: A01K1/015
Filed: 2000-03-14
Granted: 2007-07-31
Abstract: A pet animal body wastes treating material enables disposal of pet animal body wastes, such as urine, feces or so forth, in similar manner as household combustible waste, can be manufactured easily at low material cost, can maintain satisfactorily large total water absorption area with forming relatively small block with only portion absorbing water, and thus is quite economical. The pet animal body wastes treating material is composed of a core portion, in which paper powder, powder state bentonite and water absorbing polymer are mixed, a surface layer portion coating the core portion and in which paper powder, powder state bentonite, carboxymethyl cellulose and starch are mixed.
Patent CA-2303703-C (CA)
Inventor: PODGER JAMES STANLEY
IPC: H01Q11/10
Filed: 2000-03-30
Granted: 2001-09-04
Abstract: An antenna element is disclosed that is a pair of approximately coplanar loops, having perimeters of approximately one wavelength, that are connected at one point.  The loops are positioned so that a line through centre of one loop and that common point also is the line through the centre of the other loop. The approximate shape of these loops is such that the distance from that common point to any point on either loop is proportional to the cosine, raised to some power, of a multiple of the angle between that centre line and a line between the common point and the point on the loop. Compared to previous antenna elements constructed for the same purposes, antennas constructed with such loops can yield more directivity, particularly in the principal H plane, without producing large minor lobes of radiation. Several applications of such antenna elements in various arrays also are disclosed.
Patent CA-2307878-C (CA)
Title: Spine distraction implant
Inventor: WINSLOW CHARLES J
IPC: A61L27/06
Filed: 1998-10-21
Granted: 2008-07-08
Abstract: A spine distraction implant (1000) alleviates pain associated with spinal stenosis, facet arthropathy by expanding the volume in the spine canal, and/or neural foramen. The implant provides a spinal extension stop (1016) while allowing freedom of spinal flexion.
Patent CA-2309247-C (CA)
Title: Kink resistant light weight, thin walled hose
Inventor: LORD DAVE
IPC: F16L11/08
Filed: 2000-05-23
Granted: 2009-01-20
Abstract: The present invention provides for a light weight, thin walled hose which is rigid enough to resist kinking at low pressures. The hose includes a generally circular woven inner jacket reinforcement layer; an extruded inner tubing bonded to t he inner surface of the inner jacket; a circular woven outer jacket reinforceme nt layer; and an intermediate tubing bonded to the inner surface of the outer jacket a nd located between the inner and outer jackets. The intermediate tubing adds thickness to the overall wall of the hose, and stiffens the outer jacket sufficiently so that it resists kinking.
Patent CA-2310784-C (CA)
Inventor: MOUTREY THEODORE A
IPC: B60R13/01
Filed: 2000-06-06
Granted: 2007-01-02
Abstract: A liner for a high-wear portion of a work machine body, such as a dump truck body, is formed by separating a unitary plate of wear material, such as steel, into separate plate sections. The plate sections are formed such that confronting plate sections have portions that interfit with each other.      Gaps or voids are left between the interfitting portions to define openings the liner from the top surface to the bottom surface thereof. The openings cause material ejected across the liner to tumble rather than slide, thereby reducing abrasive wear. By separating the plate and forming the liner in this manner, no scrap material is created, which reduces cost compared to known design. In addition, liners having a variety of different dimensions can be created from the same plate sections by varying the relative spacing between adjacent plate sections.
Patent CA-2316829-C (CA)
Title: Procede de formation d'un foyer mobile dans un four pour produire des agglomerats de fer reduits
Inventor: HARADA TAKAO
IPC: C21B13/10
Filed: 1999-11-01
Granted: 2004-05-11
Abstract: L'invention concerne un foyer mobile. Ce foyer est formé par une couche d'un matériau composé d'oxyde de fer sur une base réfractaire dans un four réducteur. Le matériau du foyer est ensuite fritté de telle sorte qu'il ne fonde pas à la température de l'étape de réduction. Ce foyer est facile à construire par rapport au foyer avec une base réfractaire amorphe. Il présente une grande durée de vie et conserve la planéité de sa surface pendant le fonctionnement.
Patent CA-2317771-C (CA)
Title: Reseau intelligent
Inventor: RIETKERK PAUL
IPC: H04M3/42
Filed: 1999-01-05
Granted: 2005-03-29
Abstract: L'invention concerne un réseau intelligent (IN) comprenant au moins un point de commutation d'accès aux services SSP (2), au moins un point de commande de services SSP (3), un ou plusieurs périphériques intelligents IP (5), et/ou un ou plusieurs systèmes de réponse vocale VRS (4), ce réseau intelligent pouvant interagir avec un réseau téléphonique commuté public ou un réseau ISDN (1). L'essence du concept présenté réside dans une interface additionnelle se présentant sous la forme d'un organe de commande (6) placé entre les périphériques intelligents et/ou les systèmes de réponse vocale, d'une part, et le ou les points de commande de services, d'autre part. Grâce à cet agencement, les périphériques intelligents et les systèmes de réponse vocale (avancés) peuvent échanger n'importe quel type d'informations avec le ou les points de commande de services, cela sans que les périphériques intelligents ou les systèmes de réponse vocale soient occupés pendant une longue période. Ainsi, le ou les points de commande de services peuvent disposer d'informations (additionnelles) dont ils ne pourraient pas disposer dans un réseau intelligent classique.
Patent CA-2319815-C (CA)
Inventor: ZHANG YUNCHANG
IPC: C01B13/02
Filed: 1998-12-18
Granted: 2008-12-16
Abstract: The chlorate/perchlorate based oxygen generating compositions contain about 0.5-15 % by weight of metal powder for use as a fuel selected from the group consisting of iron, nickel, cobalt and mixtures thereof; about 0.1% to about 15 % by weight of at least one transition metal oxide catalyst; greater than 5 % to about 25 % by weight of an alkali metal silicate as a reaction rate and core rheology modifier, binder and chlorine suppresser, and the remainder substantially comprising an oxygen source selected from the group consisting of alkali metal chlorates, alkali metal perchlorates, and mixtures thereof. The alkali metal silicate can be selected from the group consisting of sodium metasilicate, sodium orthosilicate, lithium metasilicate, potassium silicate, and mixtures thereof. The oxygen generating composition can also optionally contain a binder selected from the group consisting of glass powder, fiber glass and mixtures thereof.
Patent CA-2325761-C (CA)
Inventor: VOLL BENN A
IPC: E21B43/04
Filed: 2000-11-10
Granted: 2005-02-01
Abstract: A system for preferable use in gravel packing is disclosed which includes a plurality of transport tubes which are mounted outside of gravel pack screens.  The multiplicity of shunt tubes cover a particular zone so that the tubes have a varying length to deposit gravel at different portions of the zone. The tops of the tubes are preferably sealed until ready for use and activated by applied pressure. In the preferred embodiment, rupture discs are found at the tops of each of the tubes, set for different pressures so as to open up the transport tubes to the lower most portion of a particular zone and later in sequence to the higher-most portion. The transport tubes are affixed to each section of pipe and are made up when two sections of pipe are made up to alignment marks. When the marks are aligned, the transport tube segments from each pipe section are in an aligned and sealed relation while the tool joint is properly torqued.
Patent CA-2339529-C (CA)
Title: Isolated and purified human soluble guanylyl cyclase .alpha.1/.beta.1 (hsgc .alpha.1/.beta.1)
Inventor: SCHMIDT HARALD
IPC: A61K35/76
Filed: 1999-08-16
Granted: 2012-04-24
Abstract: The invention relates to the expression of the cDNA clone for sub-units a1 (hsGCa1) and b1 (hsGCb1) of human soluble guanylylcyclase and the subsequent purification of the active enzyme and use thereof, the medical application of the expression of this clone by gene transfer, in addition to antibodies against peptides derived from said sequence and the use thereof.
Patent CA-2342243-C (CA)
Inventor: MOYER ELIZABETH
IPC: A61K9/00
Filed: 1999-09-09
Granted: 2014-01-14
Abstract: L'invention concerne des formulations liquides de la toxine de botulinum présentant une stabilité de conservation sous forme liquide à des températures standard de réfrigération pendant au moins 1-2 ans et de conservation à des températures supérieures pendant au moins six mois. Elle concerne également des procédés de traitement mettant en application ces formulations et les utilisations de ces formulations pour la préparation de médicaments servant à différents traitements thérapeutiques et cosmétiques.
Patent CA-2344750-C (CA)
Title: Full combined c and l bands optical amplifier and method
Inventor: HATAMI-HANZA HAMID
IPC: H01S3/23
Filed: 2001-04-18
Granted: 2010-11-02
Abstract: An optical amplifier for two adjacent bands of optical data channels provides gain across the entire spectrum, including the so-called dead-band, by splitting the entire input signal equally into two paths. One path is optimized to amplify one band and the other path is optimized to amplify the other. An optical delay in one path, usually the one optimized for the lower wavelength band, ensures equal optical path lengths for the two paths.  The amplified signals in the two paths are then combined to yield a flat gain profile across the two bands and the gap in-between.
Patent CA-2346679-C (CA)
Title: Method and radio communication system for controlling power between a base station and a subscriber station
Inventor: ULRICH THOMAS
IPC: H04J13/00
Filed: 1999-10-08
Granted: 2007-07-03
Abstract: According to the invention, transmissions of the second radio station are received in the first radio station in which the operating instruction for transmission power of the second radio station is determined. The operating instruction is transmitted during a following transmission of the first radio station to the second radio station, whereupon the latter takes into account the operating instruction for power regulation during one of its following transmissions. Contrary to prior art, no time invariable or fixed step size is used. An operating instruction is used instead which is related to a variable step size in transmission power regulation. The variable step size is subscriber-dependent and time-dependent regulated by the radio stations.
Patent CA-2350059-C (CA)
Inventor: WHITMORE DAVID
IPC: C23F13/00
Filed: 2000-02-02
Granted: 2005-05-03
Abstract: Cathodic protection of a structure including a steel member at least partly buried in a covering layer, such as steel rebar in a concrete structure, is provided by embedding sacrificial anodes into the concrete layer at spaced positions over the layer and connecting the anodes to the rebar. Each anode is inserted into a drilled hole in the layer and is electrically attached to the rebar in the same or an adjacent hole by a steel pin which is attached to the reinforcement by arc welding or by impact. In the arrangement where the anode and the attachment are in the same hole, the pin passes through a bore in the anode so as to hold the anode rigidly within the hole. The hole is filled by a settable filler material. In order to maintain effective current conduction from the anode to the reinforcement through the filler and the concrete over an extended period to maintain the required protection, there is added to the filler, to a covering layer on the anode body or to the anode body itself a first material to hold the pH at the anode in a preferred range of the order of 12 to 14 and a second humectant material to absorb moisture.
Patent CA-2351915-C (CA)
Title: Apparatus and method for pneumatically controlled graduated brake pressure release for freight train brake system
Inventor: HART JAMES E
IPC: B60T17/22
Filed: 2001-06-28
Granted: 2007-03-27
Abstract: A release graduating valve for freight brake control is provided for a railcar having a pneumatic control valve, emergency and auxiliary reservoirs each normally charged with pressurized fluid from a brake pipe and a fluid pressure activated brake cylinder device for applying the brakes on the railcar. A selectively operable release graduating valve can include a graduated release valve and a changeover valve which selectively interposes the graduated release valve to exhaust brake cylinder pressure in a graduated manner responsive to brake pipe pressure. Alternatively, the changeover valve can isolate the graduated release valve and direct the pneumatic control valve to exhaust brake cylinder pressure in a conventional manner. The changeover valve can be operated responsive to the pressure in an air pipe supplied with pressurized fluid from a remote source. A permanent release graduating valve can be provided wherein the changeover valve is omitted, in which case the brake cylinder exhaust is always controlled by the graduated release valve. Either configuration of the release graduating valve could be also be utilized in an ECP freight brake control system.