baber/WOPTO huggingface dataset:
Patent CA-2247607-A1 (CA)
Title: Intercalates and exfoliates formed with n-alkenyl amides and/or acrylate-functional pyrrolidone and allylic monomers, oligomers and/or copolymers and composite materials containing same
Inventor: BEALL GARY W
IPC: C11C5/00
Filed: 1998-09-17
Abstract: Nanocomposites are manufactured by combining a host material, such as an organic solvent or a matrix polymer and exfoliated intercalates formed by contacting a phyllosilicate with an intercalant selected from the group consisting of (1) an N-alkenyl amide monomer and an allylic monomer; (2) an oligomer formed by copolymerizing an N-alkenyl amide monomer and an allylic monomer; (3) a polymer formed by copolymerizing an N-alkenyl amide monomer and an allylic monomer; and (4) mixtures thereof to adsorb or the intercalant between adjacent phyllosilicate platelets.  Sufficient polymer is adsorbed between adjacent phyllosilicate platelets to expand the adjacent platelets to increase the spacing at least about 10 .ANG., preferably at least about 20 .ANG. (as measured after water removal), up to about 100 .ANG. and preferably in the range of about 30-40 .ANG., so that the intercalate easily can be exfoliated, e.g., when mixed with an organic solvent or a polymer melt, to provide a carrier material for drugs and the like, or to provide a matrix polymer/platelet composite (nanocomposite) material - the platelets being exfoliated from the intercalate.
Patent CA-2248172-A1 (CA)
Title: Procede et installation de sechage d'une masse de matiere fibreuse humide, notamment d'une masse de linge
Inventor: CLODIC DENIS
IPC: D06F34/14
Filed: 1997-03-07
Abstract: La présente invention concerne un procédé et une installation de séchage d'une masse de matière fibreuse humide, notamment d'une masse de linge lavée et placée dans une machine lavante-séchante ou un sèche-linge, dans lequel on fait passer à travers la masse de matière fibreuse, en circuit fermé, de la vapeur d'eau surchauffée à une température comprise entre 102~ et 180 ~C et sensiblement à la pression atmosphérique. Ce procédé est caractérisé en ce qu'il comprend, avant la phase de séchage avec de la vapeur d'eau surchauffée, une phase préalable de chasse de l'air, présent dans le circuit fermé, au moyen de vapeur d'eau.
Patent CA-2248619-A1 (CA)
Title: Generator for internal combustion engine
Inventor: FUJIWARA TADASHI
IPC: H02K19/26
Filed: 1998-01-13
Abstract: A generator for an internal combustion engine which employs an induction motor as an alternator and enables generation of specified power regardless of the number of rotations of the internal combustion engine. The generated energy P  of an alternator (1) is limited to a value not more than an upper limit value Pmax (Figure 5) and not less than a lower limit value Pmin (Figure 6) or to a target value Pc (Figure 7), regardless of the mechanical rotational speed N1 of a rotor 1R. Such control of the generated energy is realized by controlling the speed N2 of a rotating magnetic field electrically generated on a three-phase winding of the rotor 1R in response to the mechanical rotational speed N1 of the rotor 1R, so that the relative speed N of the rotating magnetic field generated by the rotor with respect to a stator coil is maintained at a speed not higher than an upper limit speed Nmax and not lower than a lower limit speed Nmin or at a target relative speed Nc.
Patent CA-2249168-A1 (CA)
Title: Downhole pipe expansion apparatus and method
Inventor: WOOD EDWARD T
IPC: E21B29/10
Filed: 1998-10-01
Abstract: A method and apparatus of expanding tubulars is the disclosed. In the preferred embodiment, a rounded tubular is inserted through a larger tubular while suspended on a mandrel. A stop device, such as a liner hanger, is attached to the larger tubular after delivery downhole on the mandrel. Upon engagement of the liner hanger or other stop device to the larger tubular, the mandrel is freely movable with respect to the stop device. The mandrel contains a deforming device such as a comically shaped wedge located below the tubular to be expanded. A force is applied from the surface to the mandrel, pulling the wedge into the tubular to be expanded.   When the wedge clears through the tubular to be expanded, it releases the stop device so than the stop device can be retrieved with the mandrel to the surface.  Thus, the stop device is supported by the larger tubing while the smaller tubing is expanded when the wedge is pulled through it. Should the tubular being expanded contract longitudinally while it is being expanded radially, it is free to move away from the stop device.
Patent CA-2250626-A1 (CA)
Inventor: CITAREL LOUIS
IPC: C08L21/00
Filed: 1998-10-09
Abstract: Disclosed is a method of preparing a thermoplastic resin composition that includes combining a ground crosslinked rubber with a thermoplastic resin and a compatibilizer based on a paraffinic oil to form a blend thermoplastic composition. The ground crosslinked rubber has an average particle size of about 80 mesh or smaller. The thermoplastic resin includes at least one polyolefinic resin. The ground crosslinked rubber is included in amounts of up to about 70% by weight, based on the weight of the blend thermoplastic composition.
Patent CA-2253600-A1 (CA)
Title: Identification of essential survival genes
Inventor: GAVRIAS VICTORIA
IPC: C12Q1/18
Filed: 1997-05-02
Abstract: A method for identifying a strain having a conditional lethal mutation which is essential for survival when strain is incubated under restrictive growth conditions, and methods of identifying gene products and gene functions thereof.
Patent CA-2254882-A1 (CA)
Title: Lifting-fuselage/wing aircraft having low induced drag
Inventor: HAHL ROBERT W
IPC: B64C39/00
Filed: 1997-05-13
Abstract: A lifting-fuselage/wing (5, 10) aircraft having low drag at a selected cruise condition. The aircraft includes (a) a lifting fuselage (5, 10) having a cross section constituting an airfoil in a majority of vertical planes (7) taken parallel to the flight direction and an aspect ratio (ARf) of 0.33 to 1.10;  (b) wings fixed to the fuselage (5, 10) having an aspect ratio (ARw) of at least 5.0; (c) a mechanism (1, 3) controlling aircraft attitude; and (d) a mechanism (9) propelling the aircraft; wherein the wings and fuselage (5, 10) produce lift in varying proportions depending upon flight conditions as follows: (i) the aircraft has a cruise design point in which the fuselage lift coefficient (CLF) is 0.08 or less, and (ii) the fuselage lift coefficient is at least 0.5 at an angle of attack (.alpha.LZo) of 10~, in level flight at sea level (ISA) with all movable enhancing devices retracted.
Patent CA-2255192-A1 (CA)
Inventor: SCHWALD ROLF
IPC: H01Q13/24
Filed: 1998-12-02
Abstract: A description is given of a filling level measuring device operating with microwaves, having a housing and an insert composed of a dielectric, and of a process for producing the dielectric, in which the dielectric constant of the insert is adjustable and in which the insert has a high chemical resistance and a mechanical strength adequate for industrial applications.  The dielectric is a composite material composed of a fluoroplastic, in particular polytetrafluoroethylene, and ceramic and is produced by mixing powdered ceramic and powdered fluoroplastic, drying the mixture, pressing the mixture and sintering the pressed mixture.
Patent CA-2256188-A1 (CA)
Title: Opto-electronic frequency divider circuit and method of operating same
Inventor: ROEMISCH STEFANIA
IPC: H04L7/00
Filed: 1998-12-15
Abstract: The circuit includes an electro-optical mixer, such as an electro-optical Mach-Zehnder modulator,  with non-linear behaviour.   The modulator receives as  input an optical signal at the frequency to be divided, in addition to  an  electric  signal  at  a  given  frequency,  usually corresponding to the frequency deriving from such division. The  output  optical  signal  from  modulator  exhibits  a modulation spectrum containing the frequency difference between the  frequency to be divided and at  least  one harmonic of the frequency of the above electric signal. After having been converted into an electric signal, the output signal of the mixer is subjected to a filtering action to extract the above frequency difference component. This latter one is then used both as electrical signal for the mixing, and as output signal from the divider.   The preferred application is to OTDM systems,  to extract a synchronism signal at tributary signal frequency.
Patent CA-2256877-A1 (CA)
Inventor: FORD JESSE CARL
IPC: B21D43/10
Filed: 1998-12-21
Abstract: A stretch-forming machine of the type wherein a pair of opposed curving jaws grips opposing ends of a metal sheet to be stretch-formed in a curved configuration.  Each of the jaws are formed of an array of adjacent grippers movable relative to each other by respective hydraulic cylinders to define a part of the curve of the jaw. The improvement to the stretch-forming machine which is the subject of this application comprises a closed-loop servo-control means for moving each one of the grippers into a predetermined position relative to each other. Each of the servo-control means comprises a hydraulic cylinder position controller carried by the hydraulic cylinder of the one gripper for controlling hydraulic fluid flow to the hydraulic cylinder responsive to stored data representing the desired predetermined position of one of the grippers. A motor is provided for actuating the position controller in response to the data received by the position controller to move the hydraulic cylinder. Hydraulic cylinder position feedback means is positioned on the hydraulic cylinder for sensing the position of the hydraulic cylinder and communicating a signal representing the position of the hydraulic cylinder to the position controller.
Patent CA-2258129-A1 (CA)
Inventor: COFFIELD DON RICHARD
IPC: H04L12/54
Filed: 1998-04-16
Abstract: A method and a system for forwarding multicast data packets across a plurality of telecommunications subnets interconnected by routers in which a data packet is received within a subnet of the plurality of telecommunications subnets. When the data packet is a multicast data packet, a multicast IP address for the multicast data packet is determined. A multicast forwarding database is accessed for determining a LAN Emulation Client associated with the multicast IP address, and a Broadcast Unknown Server associated with the multicast IP address for the multicast data packet is determined. The multicast data packet is sent to the Broadcast Unknown Server associated with the multicast IP address for the multicast data packet through the LAN Emulation Client using a point-to-point connection. The Broadcast Unknown Server sends the multicast data packet inter-subnet to each router associated with the multicast IP address for the multicast data packet using a point-to-multipoint connection, with at least one multicast host being connected to a subnet that is different from the subnet in which the multicast data packet was received.
Patent CA-2260074-A1 (CA)
Inventor: PREISING RALF
IPC: B65H19/30
Filed: 1998-05-15
Abstract: A winding machine is proposed for continuous winding of a material web, in particular a paper or cardboard web, onto a reel into a winding roll, having a movable pressing drum, which forms a winding gap with the winding roll, having at least one primary transport device by means of which the reel can be moved along a first guide track, and at least one secondary transport device that guides the reel along a second guide track. The winding machine is distinguished in that in order to prepare for a reel change, the new reel (35; 49) can be shifted by means of the primary transport device (79) into a reel-changing position in which a new winding gap is formed between the new reel (35; 49) and the pressing drum (19), and that in the reel-changing position, the material web (3) is guided over a circumference region of the new reel (35; 49).
Patent CA-2260974-A1 (CA)
Inventor: LI KAIPING
IPC: H04J13/00
Filed: 1996-07-15
Abstract: In a synchronous fixed frame boundary system with variable data rates, a transmitter (10) inserts into a current frame an indication of the data rate of the next frame. As a station modem (18) assembles a current frame for encoding, the station modem (18) inserts a rate indication for the subsequent frame in accordance with information from a vocoder (22) and CPU (20) of the appropriate data rate for the subsquent frame. On the receiver (30) side, rather than decoding multiple times to determine the appropriate data rate for every frame, the receiving station modem (38) discovers the rate of each frame subsequent to the first frame.
Patent CA-2260980-A1 (CA)
Inventor: STEBER GEORGE R
IPC: B25F5/00
Filed: 1997-07-16
Abstract: A system (10) for tightening a threaded fastener with a hydraulic wrench (14) has a pumping unit (12) which measures parameters representative of the torque applied to the fastener and the angle of advance of the fastener, remote from the wrench (14). The pump (12) measures pressure as a parameter representative of torque and measures pump speed as a parameter representative of the angle of advance of the fastener. A ratchet-type hydraulic wrench is used, and the pressure versus angle data produced in tightening a fastener is manipulated to discard irrelevant portions and smooth relevant portions to provide data representative of torque and angle during the tightening process from which to determine a final stopping parameter for terminating tightening. The system also has a calibration fixture (19) for determining the volumetric rate of angle advance for a given wrench (14). Any tightening methodology dependent upon angle may be used to practice the invention, or the invention may be applied to monitor the tightening process.
Patent CA-2264057-A1 (CA)
Title: Elastomeric cycloolefinpolymer
Inventor: WEHRMEISTER THOMAS
IPC: C08F232/00
Filed: 1997-08-11
Abstract: Disclosed is an elastomeric cycloolefinpolymer containing 1 to 50 mol/ % of polymerized units derived from one or a plurality of polycyclic olefins, with one or several norbornene units and 50to 99 mol/ % of polymerized units derived from one or more acyclic olefins of formula (a), where R i, R ii, R iii and R iv are the same or different and a hydrogen atom is a straight, branched, saturated or unsaturated C1-C20 hydrocarbon residue or a C6-C18 aryl residue, and 50 to 99 mol/% of polymerized units derived from one or several monocyclic olefins of formula (VIII), where n is a number between 2 and 10.
Patent CA-2273441-A1 (CA)
Title: Method for controlling automotive sliding doors
Inventor: SAYAMA MASAMI
IPC: E05F15/00
Filed: 1999-06-01
Abstract: In a method for controlling a powered sliding door system, a standard time period for the sliding door to pass a calibration interval defined near a fully closed position under a standard duty ratio condition is measured, and the duty ratio of the drive pulse signal for the motor in the remaining interval of operation is determined from this standard time period so that the sliding door may move at a prescribed speed irrespective of the load acting on the door. This control method can be favorably used in combination with the process of detecting an obstacle in the path of the sliding door, which is based on the detection in the reduction in the speed of the sliding door, without any interference between them.
Patent CA-2277949-A1 (CA)
Title: Disubstituted bicyclic heterocycles, the preparation and the use thereof as pharmaceutical compositions
Inventor: WIENEN WOLFGANG
IPC: C07D277/64
Filed: 1998-02-16
Abstract: The invention relates to new disubstituted bicyclic heterocycles of the general formula (I): R a-A-Het-B-Ar-E, in which A, B, Ar, Het and R a are defined as in claim 1. The invention also relates to their tautomers, their stereoisomers, their mixtures, and their salts, which have valuable properties. The compounds of the above general formula (I), in which E is a cyano group, thus represent valuable intermediate products for the production of the other compounds of the general formula (I). Furthermore, the compounds of the above general formula (I), in which E stands for a R b NH-C(=NH)-group, have valuable pharmacological properties, in particular in inhibiting thrombin and prolonging thrombin time.
Patent CA-2278571-A1 (CA)
Title: Gaine de limitation du rayon de courbure
Inventor: HENSON GORDON DWIGHT
IPC: G02B6/00
Filed: 1998-01-30
Abstract: L'invention porte sur une gaine de limitation (400) renfermant une ligne telle qu'un câble ruban de fibres optiques ou autre conducteur, cette gaine limitant le mouvement de courbure ou de torsion de la ligne. La gaine comprend de préférence une matrice multidimensionnelle d'éléments d'engagement (450) séparés par une pluralité d'intervalles (460) et raccordés par une structure de bande sous-jacente. Lorsque la gaine est courbée ou tordue, les éléments de contact adjacents se déplacent pour venir en contact les uns avec les autres, ce qui limite le rayon de courbure ou l'angle de torsion de la gaine, et par conséquent celui de câble ruban de fibres optiques ou autre ligne protégée. La gaine de limitation de l'invention comprend deux parties pouvant coulisser (410, 420). Une structure de blocage (425) bloque les deux parties de la gaine et les empêche de se séparer, mais permet un déplacement coulissant dans le sens longitudinal de la ligne. Ceci permet d'adapter le rayon de courbure différentielle qui se crée lors de la courbure/torsion de la gaine, et réduit par conséquent la déformation dans la structure de blocage.
Patent CA-2279691-A1 (CA)
Inventor: HSIEH TAR-HWA
IPC: C08G73/02
Filed: 1999-08-05
Abstract: A wastewater-recyclable polymerization process for producing a polyaniline-based resin includes: feeding into a reactor a first amount of an aniline monomer, a first amount of an acid solution, and a first amount of an oxidizing agent to undergo polymerization so as to produce polyaniline resin particles; filtering the polyaniline resin particles from an acidic aqueous solution formed during the polymerization; neutralizing and drying the polyaniline resin particles to form a powder; recycling the acidic aqueous solution by returning the acidic aqueous solution into the reactor to mix with a second amount of the aniline monomer, and a second amount of the oxidizing agent; and permitting the aniline monomer to undergo polymerization in the presence of the recycled acidic aqueous solution at room temperature without cooling the reactor.
Patent CA-2280206-A1 (CA)
Inventor: GERHOLD DAVID L
IPC: C12N1/15
Filed: 1998-02-06
Abstract: L'invention concerne une molécule d'acide nucléique isolée qui code une nouvelle kinase cyclino-dépendante (CDK = cyclin-dependent kinase) humaine qui comprend une nouvelle séquence de signature du domaine de liaison de la cycline et ne présente pas plusieurs résidus d'acide aminé, qui étaient conservés jusqu'à maintenant, impliqués dans la régulation du complexe cdk/cycline. L'invention concerne des protéines et des formes mutantes biologiquement actives associées.
Patent CA-2284401-A1 (CA)
Title: Shrimp deveining apparatus and method
Inventor: SHELTON R DOUGLAS
IPC: A22C29/02
Filed: 1999-09-29
Abstract: A shrimp deveining apparatus includes a housing with an entrance opening for receiving a shrimp and an exit opening for ejecting the shrimp from the housing after having the shell cut and deveined. Within the housing, a partition extends upwardly from a base and has an arcuate surface for slidably receiving a shrimp thereon. Opposing lever arms are rotatably attached to and carried on opposing sides of the partition for rotation about an axis. Each of the lever arms have their distal end radially extending beyond the arcuate surface of the partition for cradling the shrimp onto the arcuate surface. As the distal ends are rotated downstream the entrance opening, the distal ends are biased against the shrimp for securing the shrimp therebetween while the shrimp slides along the arcuate surface past dorsal and ventral cutting blades. The shrimp continues to be secured within the distal ends while the shrimp is carried past a brush positioned for sweeping of the vein from the now cut shell and thus exposed body of the shrimp. Once the vein has been swept from the severed shrimp, the biasing is reduced and the cut and deveined shrimp is ejected from the housing through the continued action of rotating the lever arm. Using a handle attached to the lever arms, they returned to a starting position for repeating the process with another shrimp.
Patent CA-2286066-A1 (CA)
Inventor: ROZIER DOUGLAS A
IPC: B60J5/10
Filed: 1998-04-14
Abstract: In accordance with the teachings of the present invention, there is provided a door closure apparatus for covering a single opening (12) in a vehicle body (10). The apparatus including a first door (16), a second door (18) and a third door (20), each door (16, 18, 20) being pivotally supported by hinges which are concealed from view when the first (16), second (18), and third (20) doors are in a closed position.
Patent CA-2286947-A1 (CA)
Title: Absorbent composition including an uncrosslinked polymer
Inventor: ROBERTSON WILLIAM G
IPC: C08G65/30
Filed: 1999-10-19
Abstract: An absorbent composition comprising an uncrosslinked, high molecular weight polymer, wherein the uncrosslinked, high molecular weight polymer is treated by a means to effectively insolubilize the uncrosslinked, relatively high molecular weight polymer such that the absorbent composition exhibits desirable absorbent properties. In particular, the absorbent composition has the ability to absorb a large quantity of liquid.  The absorbent composition is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb bodily liquids. Suitable polymers include polyethylene oxide, poly(acrylic acid), poly(vinyl alcohol), and poly(vinyl pyrrolidone) wherein the polymer has a weight average molecular weight that is greater than about 1,000,000.
Patent CA-2286968-A1 (CA)
Title: Chemically embossed metallocene polyethylene foam
Inventor: YANG LI-YING T
IPC: C09D11/02
Filed: 1999-10-20
Abstract: A textured metallocene polyethylene foam sheet suitable for use in a floor covering is made using a highly co-activated azodicarbonamide package which blows the metallocene polyethylene effectively. The preferred co-activators are zinc oxide and urea.  The textured surface of metallocene polyethylene foam is formed by a chemical embossing process which utilizes a liquid triazole having an alkyl moiety as a foam-expansion inhibitor. The triazole is dissolved in a non-polar solvent to form the foam inhibitor. The preferred inhibitor is a hydrocarbon which may be halogenated.
Patent CA-2287854-A1 (CA)
Inventor: FORD COLIN P
IPC: B65B7/20
Filed: 1998-05-05
Abstract: A rotary flap tucker (10) comprising a tube sector having a smalleer arc length end, a larger arc length end, a longitudinal edge (12), and an edge which helically advances generally from the small arc length end to the large arc length end. The tube sector has end plates (30, 40) each with an edge contoured to avoid contact with a carton flap as the flap tucker rotates about its center axis which is aligned with the carton travel direction. The leading edge (66) of a flap (64) entering the flap tucker follows the helical edge of the flap tucker as it rotates without contacting the flap for a majority of the rotation. Rotation brings the flap tucker's longitudinal edge (12) in contact with the flap along a majority of the flap's length. Continued rotation plows the majority of the length of the flap simultaneously, thereby preventing the flap from misaligning on the carton when the flap is closed.  The outside surface of the rotating flap tucker runs against the closed flap of the advancing carton, preferably along the carton's center line.