baber/WOPTO huggingface dataset:
Patent CA-2266868-A1 (CA)
Title: Method of producing membrane electrode units for pem fuel cells
Inventor: GRUENE HORST
IPC: H01M8/1004
Filed: 1997-06-25
Abstract: The invention concerns a method wherein membrane electrode units for fuel cells are produced in a continuous and automatable process. A web of polymer membrane is initially drawn through a bath containing a salt solution of the electrode material so that the web has a salt crust or film on both sides, and the salt adhering is then reduced in a stream of gas or in another bath.
Patent CA-2268765-A1 (CA)
Inventor: SHIAH TIEN
IPC: H04M3/50
Filed: 1999-04-07
Abstract: The present invention provides telephone subscribers with a reverse voice mail system that plays personalized messages left by a subscriber to incoming callers, rather than incoming callers leaving a personalized message to a telephone subscriber. A subscriber is provided with the capability for the one or more unique messages to be delivered to the groups of callers, without the subscriber being required to contact each caller individually. The present invention is implemented with a messaging system host which can be an Intelligent Peripheral (IP) which forms part of the Advanced Intelligence Network (AIN).
Patent CA-2269748-A1 (CA)
Title: Flyback converters with soft switching
Inventor: XI YOUHAO
IPC: H02M1/34
Filed: 1999-04-22
Abstract: A flyback converter has a main switch coupling a primary winding of a transformer between supply terminals, a duty cycle of the main switch controlling an output of the converter derived from a secondary winding of the transformer.  Soft (zero voltage) switching of the main switch is facilitated by a snubber capacitor in parallel with the main switch. An auxiliary circuit coupled in parallel with the snubber capacitor and main switch includes a series-connected auxiliary switch, capacitor, and inductor coupled via another inductor to a full wave rectifier arrangement for recovering energy from the snubber capacitor. Resonant circuits provided by the auxiliary circuit facilitate soft switching of the auxiliary switch for low power loss and high frequency operation. The switches can be MOSFETs with reverse-poled diodes in parallel with their drain-source paths.
Patent CA-2275193-A1 (CA)
Inventor: PAQUIN ROBERT
IPC: A61K9/08
Filed: 1997-12-12
Abstract: L'invention concerne la production de solutions aqueuses non tamponnées contenant des concentrations élevées de fibronectine et d'autres adjuvants de la cicatrisation, qui peuvent ensuite être utilisées pour préparer des formulations de gels et de crèmes topiques contenant des concentrations élevées d'adjuvants de la cicatrisation. Ces formulations sont utilisées pour la cicatrisation de blessures cutanées. Etant à libération lente, elles allongent le temps de contact de la fibronectine et des autres adjuvants de la cicatrisation avec le site de la blessure, ce qui permet une absorption efficace desdits adjuvants.
Patent CA-2281211-A1 (CA)
Title: Method and apparatus for receiving mpeg video over the internet
Inventor: BOYCE JILL MACDONALD
IPC: H04N7/26
Filed: 1999-08-31
Abstract: In order to transmit an inter-frame coded video signal, such as an MPEG-coded video signal, over a packet-based network such as the Internet, the video signal associated with at least one video frame, is split into a high priority partition and a low priority partition. A systematic forward error erasure/correction (FEC) code, such as a Reed Solomon (n,k) code, is then applied to bytes in the high priority partition. The forward error/erasure corrected high priority partition bytes and the low priority partition bytes are then combined into n packets for transmission over the packet network to a receiver/decoder. Each of the n transmitted packets contains a combination of both high priority partition data bytes and low priority partition information bytes. In k of those packets the high priority partition data bytes are all high priority partition information bytes and in n-k of those packets all the high priority partition data byte are parity bytes produced by the FEC coding. More specifically, for each high priority partition byte position within the n packets, the forward error/erasure correction code is applied using one high priority partition information byte from the same byte position in each of those k packets to determine n-k parity bytes, which are arranged, one byte per packet, in the n-k packets containing high priority partition parity bytes. If up to n-k packets are lost in transmission over the packet network to the receiver, then the high priority partition bytes in such lost packets can be recovered to applying FEC decoding to the high partition bytes in the received packets. The most visually significant information is thus protected against packet loss over the network.
Patent CA-2281630-A1 (CA)
Title: Process for the preparation of stable, non-hygroscopic salts of l(-)carnitine
Inventor: FASSI ALDO
IPC: C07C59/285
Filed: 1998-02-24
Abstract: Stable, non-hygroscopic salts of L(-)carnitine and alkanoyl L(-)carnitines with mucic acid of formula (I) are disclosed wherein the molar ratio between the carnitine moiety and mucic acid is 2:1. A process for producing the salts and solid orally administrable compositions containing same are also disclosed.
Patent CA-2282729-A1 (CA)
Title: Transgenic animals and cell lines for screening drugs effective for the treatment or prevention of alzheimer's disease
Inventor: WANDS JACK R
IPC: C12N1/15
Filed: 1998-02-26
Abstract: Disclosed are transgenic animals and transfected cell lines expressing a protein associated with Alzheimer's Disease, neuroectodermal tumors, malignant astrocytomas, and glioblastomas. Also disclosed is the use of such transgenic animals and transfected cell lines to screen potential drug candidates for treating or preventing Alzheimer's disease, neuroectodermal tumors, malignant astrocytomas, and glioblastomas. The invention also relates to new antisens oligonucleotides, ribozymes, triplex forming DNA and external guide sequences that can be used to treat or prevent Alzheimer's disease, neuroectodermal tumors, malignant astrocytomas, and glioblastomas.
Patent CA-2283072-A1 (CA)
Title: High frequency rf driver
Inventor: BAKER WM KEITH
IPC: H04N1/40
Filed: 1999-09-09
Abstract: A device for providing an RF signal burst to an external load includes a voltage-controlled oscillator to generate a drive signal having a frequency f vco fixed by an oscillator control signal. An RF driver stage coupled to the external load receives the drive signal and generates an RF signal burst in response to the drive signal. A current transformer coupled between the RF driver stage and the external load senses the current in the RF driver stage and generates a reference current having the same phase as the sensed current. A phase detector receives the reference current along with the drive signal and generates a phase detection signal that provides a measure of the phase of the current in the RF driver stage with respect to the drive signal. The phase detection signal can be used to adjust the oscillator control signal to drive the oscillator frequency to a desired value.
Patent CA-2283982-A1 (CA)
Inventor: JOBLING PETER GORDON
IPC: D21C5/02
Filed: 1999-09-28
Abstract: The present invention relates to a process and composition for the recovery of fibre from waste paper and paper broke which has been treated with wet-strength resins. Specifically the present invention is directed to the removal of such resins from the fibre material, so that such fibre material may be recycled to a paper web forming process, by using selected persulfates such as potassium persulfate. Optionally, the persulfate is used in combination with a surfactant. Improved repulping of the waste paper is achieved.
Patent CA-2286285-A1 (CA)
Inventor: MOLANDER DAN
IPC: B65D6/18
Filed: 1997-09-02
Abstract: A stackable plastic box blank (30) constructed using a reinforcing net (2) made of first plastics material of rubber-modified polypropylene to form strong hinges, and a second plastics material (e.g) polypropylene, polythene) injection moulded in the spaces between elements of the net to form panels and flaps. The first plastic has a melt index less than the second plastic. The different second plastic characteristics enable additional column support to be provided. The structure of the box also reduces the forces on its structural walls by the provision of load bearing panels (42, 46, 62, 66). These load bearing panels are provided with convex projections of concavities which snap fit into rectangular openings in the end panels (44, 64). Base panel (58) and lid flaps (50, 58) are provided with concavities to provide anti-slip with adjacent boxes when in either the erected or collapsed state.
Patent CA-2287385-A1 (CA)
Inventor: SCHAARDT UWE
IPC: A61B17/17
Filed: 1998-04-23
Abstract: L'invention a trait à un dispositif d'implantation de plaque osseuse (6), lequel dispositif comporte un élément de raccordement endoscopique (8) pourvu d'un élément constituant un corps dont les dimensions lui permettent de loger au moins une partie d'un endoscope et d'un porte-plaque osseuse (7) dont les dimensions d'une des extrémités sont telles qu'il peut recevoir au moins une partie de la plaque osseuse (6). Le porte-plaque osseuse (7) est associé de manière fonctionnelle à l'élément corps de l'élément de raccordement (8) de manière à pouvoir passer d'une première position rétractée à une seconde position d'implantation. Dans des réalisations préférées, l'élément de raccordement (8) comporte un chemin de guidage assurant un déplacement latéral du porte-plaque (7), lequel chemin est pourvu de plusieurs cliquets permettant la tenue d'un bouton de verrouillage sur le porte-plaque et ce, afin de maintenir celui-ci en position d'implantation.
Patent CA-2287684-A1 (CA)
Inventor: JASPERSE THOMAS J
IPC: F15B15/14
Filed: 1999-10-28
Abstract: A transfer apparatus for automated parts movement comprises a cylinder attached to a rearward and a forward end cap. Slidably positioned within the cylinder is an outer piston having a recess in which an inner piston is slidably received. A transfer assembly is attached to the inner and outer piston. The transfer assembly includes an inner rod attached to a gripper and a sheath. The inner rod is attached to the inner piston and extends through both the outer piston and the forward end cap. The sheath is affixed to the outer piston and encases the inner rod and gripper. Introduction of fluid through the rearward end cap moves the pistons to extend and expose the gripper, enabling it to grasp an article, and thereafter transports the article to the target destination. At the target destination, continued movement of the outer piston towards the forward end cap extends the sheath to move over the gripper, and thereby removes and deposits the article. Injection of fluid through the forward end cap retracts the pistons and the transfer assembly.
Patent CA-2288068-A1 (CA)
Title: Appareil pour la concentration aseptique d'ecoulements tourbillonnaires
Inventor: PROWS DANIEL
IPC: B01D65/08
Filed: 1998-04-20
Abstract: Cette invention se rapporte à un appareil (10) qui est pourvu d'un rotor (50) à l'intérieur d'une membrane (48) servant à créer une concentration aseptique de l'écoulement tourbillonnaire d'une dispersion liquide ou semi-solide possédant une interface de support résistant à la fragmentation, de telle sorte que de la matière de support non désirée ne vienne pas contaminer les substances, par exemple, pharmaceutiques et biologiques, en cours de transformation.
Patent CA-2289371-A1 (CA)
Title: Shield connector for helmet
Inventor: EOM JU SUNG
IPC: A42B3/22
Filed: 1999-11-12
Abstract: A shield connecting system for a helmet has components mounted on the right and left sides of the helmet, and components that are provided on the face shield.  The components that are mounted on each side of the helmet include a fixation mechanism that has a rotation member, a first resilient plate, and a second resilient plate which is installed under the first resilient plate. The fixation mechanism has a protrusion and a guide for guiding the rotation of the rotation member. The rotation member has at an adjacent portion thereof an aperture. An insertion guide portion to correspond to the aperture is formed in a front portion of the aperture. The first resilient plate has at a rear portion thereof a protrusion. The shield to be coupled with the fixation mechanism has, for an assembly of the assembly with the helmet body, at both inner end surfaces thereof a connection member to be inserted to the rotation member, a protruded guide, and a rack-shaped control member.  The protruded guide and rack-shaped control member control the degree of rotation of the shield by the first and second resilient plates. In one embodiment of the invention, the user locks the shield into place by moving a locker arm that is mounted on the helmet from an open position to a closed position, thereby rotating a member that locks the shield onto the helmet. In another embodiment, a member associated with the face shield moves the locker arm to a closed position as the shield is lowered over the opening in the helmet, to provide automatic locking.
Patent CA-2289884-A1 (CA)
Inventor: POMERLEAU DANIEL GUY
IPC: H04M1/7246
Filed: 1999-11-18
Abstract: A modular communication and entertainment system is described enabling radio communication capabilities and entertainment capabilities through a base unit. The system includes at least one module which interfaces with a base unit which provides functionality to the base unit. The system is adaptable to permit development of the base unit and portable module independently of one another.
Patent CA-2293448-A1 (CA)
Title: Method of making methylamines using chabazite catalysts
Inventor: CORBIN DAVID RICHARD
IPC: C07C209/16
Filed: 1998-06-30
Abstract: A method for making monomethylamine, dimethylamine and trimethylamine, in which methanol and/or dimethylether and ammonia are contacted in the presence of an acidic zeolite chabazite catalyst is disclosed. The method suppresses the production of trimethylamine and optimizes dimethylamine and monomethylamine yields.
Patent CA-2294021-A1 (CA)
Title: Interlabial device adapted for menses component management
Inventor: HORNEY JAMES CAMERON
IPC: A61F13/82
Filed: 1998-06-15
Abstract: Absorbent devices, and more particularly absorbent devices that are worn interlabially by female wearers for catamenial purposes, incontinence protection, or both, are disclosed. The interlabial absorbent device of the present invention comprises a main absorbent portion and a pair of flexible extensions joined to the main absorbent portion. The main absorbent portion has a distal surface and comprises an acquisition member and at least one storage member, in fluid communication with the acquisition member, that is disposed laterally outboard of the acquisition member. In use, the distal surface of the main absorbent portion is positioned furthest inward into the space between the wearer's labia majora. The pair of flexible extensions extends downwardly and laterally outward from the distal surface, and preferably is capable of maintaining contact with the inside surfaces of the wearer's labia majora when the wearer's body goes through a range of motions, including squatting. Additionally, the flexible extensions are preferably capable of covering the fingertips of the wearer as the absorbent device is inserted into the interlabial space. The interlabial device further preferably comprises a backsheet that is disposed on the surface of the flexible extensions that is opposite the body contacting surface thereof and on all surfaces of the main absorbent portion except the proximal surface.
Patent CA-2295039-A1 (CA)
Title: Chair type air massager
Inventor: INABA KATUMI
IPC: A61H1/00
Filed: 1999-04-26
Abstract: A chair type air massaging machine comprising a chair body (21) containing a seat (23) and a back rest (24) and incorporating therein treating bags (25, 26, 27, 28, 29) and a leg massager (41) containing a pair of lower limb receiving grooves (47) and a plurality of treating bags (48) provided in association with respective lower limb receiving grooves, wherein the leg massager can move between a first position connected to the chair body (21) and disposed in front of the seat (23) and a second position separated from the chair body.
Patent CA-2298717-A1 (CA)
Inventor: STARTARE ANTHONY V
IPC: F23Q3/00
Filed: 2000-02-11
Abstract: A unique system for implementing gas burners, particularly for gas range tops used in cooking. The design permits a number of improvements which are not feasible with conventional burners. Improved aeration over a wider range of firing rates is achieved with a novel orifice design. The primary orifice from which the gas exits into ambient air may contain a coaxially-located tapered pin. By adjusting the relative positions of the pin and orifice along their mutual axis, the effective cross-sectional area of the orifice changes, with a proportional change in gas flow. The relatively constant exit velocity of the gas throughout the operating range assures proper aeration at all flow rates, and permits a higher turn-down ratio than is feasible with conventional burners.  To extend the turndown range even further, a secondary, non-adjustable orifice may be provided that is sized for proper aeration at very low flow rates. When the primary orifice is closed by the pin, the secondary orifice continues to operate, providing proper aeration for a very low flame. A separate but mechanically linked variable opening may be used to completely shutoff the gas supply when no flame is desired. This valve design also permits the valve to be co-located with the burner, which in turn enables the use of a combination valve-burner cartridge for ease of assembly and replacement. A flexible valve control coupling permits the valve and control knob to be remotely located from each other, and permits the relative positions of valve and control knob to be varied without changing parts. The use of a conventional flexible cable/housing for this control linkage eliminates the need for a separate wiring cable for a spark ignition system, since the metal control cable may also serve as the ignition wire. The smaller burner head permitted by improved aeration creates batter heat transfer characteristics over conventional burner heads. A dome-shaped burner cap may use directional radiant heat to provide more even heat transfer at low flame levels. An automatic valve shutoff may close the gas valve in the event of a runaway fire at the burner by melting a critical component in the control linkage.
Patent CA-2299639-A1 (CA)
Inventor: WARE TOM
IPC: H04M3/42
Filed: 2000-02-28
Abstract: An adaptive rule-based mechanism and method to resolve conflicting feature interactions includes the steps of determining conflicting features available for execution in response to an event; examining the conflicting features to determine whether one of the conflicting features takes priority over other conflicting features; if one of the conflicting features takes priority, selecting that conflicting feature for execution; and if one conflicting feature does not take priority, prompting the user to make a selection to resolve the conflicting feature interaction.
Patent CA-2300760-A1 (CA)
Inventor: UNGAR ISTVAN
IPC: B65B5/06
Filed: 2000-03-17
Abstract: A product stuffer has a bucket train, a carton conveyor which, at a stuffing station, parallels the bucket train and is arranged for conveying a carton adjacent to, and in registration with, an outlet end of a bucket in the bucket train, and a product pusher train which, at the stuffing station, parallels said bucket train and is arranged for providing a product pusher adjacent to, and in registration with, an inlet end of a bucket in the bucket train. Each bucket in the bucket train is open-ended and has a floor with a plurality of parallel grooves which slope toward one sidewall of the bucket and a ceiling with a plurality of parallel grooves which slope away from the one sidewall. Consequently, products in a sheaf of upstanding products inserted into the bucket are urged to lean over as the sheaf is pushed through the bucket so that a shingled sheaf of products leaves the bucket. The shingled sheaf may be stuffed into a carton having a lesser height than that of a sheaf of upstanding products.
Patent CA-2306674-A1 (CA)
Title: Medication tracking system
Inventor: DEAN SHARRON
IPC: G16H20/10
Filed: 2000-04-26
Abstract: A medication tracking system for the identification and tracking of medication having an identifier comprising of a tracking device having a scanning means, a display means, and a communication means, and method for using the system.
Patent CA-2307350-A1 (CA)
Title: Data processor storage systems with dynamic resynchronization of mirrored logical data volumes subsequent to a storage system failure
Inventor: MADDALOZZO JOHN JR
IPC: G06F11/20
Filed: 2000-05-01
Abstract: There is provided a system for dynamically resynchronizing a storage system made up of a plurality of mirrored logical volumes respectively divided into a plurality of mirrored logical data partitions in the event of a system failure. Immediately after the correction of the problem causing the failure, means start to resynchronize the plurality of logical volumes but without waiting for the resynchronization to be completed; means access data from a data partition in one of said logical volumes. Then there are means for determining whether the portion of the logical volume containing the accessed partition has already been resynchronized, together with means responsive to these determining means for replacing the corresponding data in the other mirrored partitions in the logical volume with the accessed data, in the event that the portion of the logical volume has not been resynchronized. The means for replacing the data in the other mirrored partitions in the logical volume containing the accessed partition may replace the data prior to resynchronization of the logical volume or it may replace the data during the subsequent resynchronization of the logical volume. In the implementation where the data in the other mirrored partitions is replaced during resynchronization, then there is provided interim means responsive to the accessing of data from the data partition in said logical volume for indicating the partition as accessible and for indicating the other mirrored partitions in the logical volume as inaccessible.
Patent CA-2309313-A1 (CA)
Title: Stimulation of the immune response by human dendritic cell manipulation
Inventor: RAVAGGI ANTONELLA
IPC: A61K39/00
Filed: 2000-06-09
Abstract: A method for preparing human dendritic cells containing antigens by pulsing human dendritic cells with cationic liposomes comprising at least one antigen to obtain antigen pulsed human dendritic cells is disclosed. Additionally, a method of producing antigen specific human CD8+ cytotoxic T-lymphocytes (CTL) and CD4+ helper T-lymphocytes by incubating human T-lymphocytes with the antigen pulsed human dendritic cells produced by the disclosed method under conditions that promote the generation of antigen-specific T-lymphocytes with specificity to the antigen with which the dendritic cells were pulsed is disclosed. Use of the antigen pulsed dendritic cells in immunotherapy and for prophylactic vaccination also is disclosed. Additionally, use of the stimulated antigen specific human CD8+ cytotoxic T-lymphocytes (CTL) and CD4+ helper T-lymphocytes in adoptive immunotherapy and for prophylactic vaccination is also disclosed. Compositions containing antigen pulsed human dendritic cells and/or antigen specific human CD8+ cytotoxic T-lymphocytes (CTL) and CD4+ helper T-lymphocytes produced by the methods of the present invention are also disclosed. The methods and compositions are particularly useful for stimulating the immune response against human papillomavirus (HPV) oncoproteins full-length E7 or E6 that have been associated with human cervical cancer.