baber/WOPTO huggingface dataset:
Patent CA-2285767-A1 (CA)
Title: Indexing mechanism and apparatus incorporating the same
Inventor: ABBOTT MALCOLM ADRIAN
IPC: E21B23/00
Filed: 1999-10-12
Abstract: Within a longitudinally-extending main housing having a longitudinally-extending duct, an indexing mechanism comprises a mandrel within the duct and capable of longitudinal movement relative to the main housing; a cam sleeve rotatable with respect to the mandrel but constrained in terms of longitudinal movement with respect to the mandrel, the cam sleeve having an external surface provided with a groove in the form of a closed loop; a cam follower resiliently urged into the groove of the cam sleeve; a main spring tending to urge the mandrel in a first direction along the duct; and a fluid abutment face, on which, in use, fluid under pressure can act to tend to urge the mandrel in a second direction opposite to the first direction; the groove having ramps and associated steps thereby restricting relative movement of the cam follower with respect to the groove, to one direction progressively around the closed loop; the groove having a plurality of rest positions at which the cam follower can rest, depending on which of the force of the main restoring means and the force of the fluid pressure dominates the other.
Patent CA-2285954-A1 (CA)
Inventor: JOHNSON IAN DAVID
IPC: H04L7/033
Filed: 1998-03-30
Abstract: A synchronising arrangement for a closed-loop data transmission system includes a central data switch (10) and a plurality of transceivers (11, 12) which may be interconnected by way of the switch for the transmission of data between them. The central data switch (10) includes a clock generator (18), and a plurality of ports (19 and 110), each of which includes a transmitter (112), a receiver (111), a phase detector (113) and a phase encoder (114).  Each transceiver (11, 12) includes a data transmitter (116), a data receiver (117) and synchronising means (119, 120, 121, 122) operable to maintain synchronism between the transceiver and the data port. A common reference oscillator (125) provides frequency reference signals to the central data switch (10), each data port (19, 110) and each transceiver (11, 12).
Patent CA-2288177-A1 (CA)
Inventor: KASE KIWAMU
IPC: G06T17/30
Filed: 1998-04-22
Abstract: On établit les courbures principales des positions correspondantes d'une surface incurvée S' d'objet et d'une surface incurvée de référence S et l'on classe les régions respectives suivant les trois catégories suivantes en fonction de la différence entre les courbures principales: (a) les régions où les deux courbures principales augmentent, (b) les régions où les deux courbures principales diminuent et (c) les régions où une courbure principale augmente alors que l'autre diminue. Ces régions (a), (b) et (c) sont considérées respectivement des monts, des vallées et des torsades et sont affichées sur un écran d'affichage au moyen de couleurs et de symboles différents. Il est ainsi possible d'identifier correctement les différentes régions des deux formes tridimensionnelles, de déterminer les causes d'erreurs du type courbe partielle, d'exprimer le degré de concordance entre les deux formes au moyen de valeurs numériques objectives, et d'établir une distinction entre les erreurs de forme même lorsque la forme de référence est compliquée.
Patent CA-2288895-A1 (CA)
Title: Genetically engineered duckweed
Inventor: RAJBHANDARI NIRMALA
IPC: C12N15/09
Filed: 1998-08-11
Abstract: Methods and compositions for the efficient transformation of duckweed are provided. Preferably, the methods involve transformation by either ballistic bombardment or Agrobacterium. In this manner, any gene or nucleic acid of interest can be introduced and expressed in duckweed plants. Transformed duckweed plants, cells, tissues are also provided. Transformed duckweed plant tissue culture and methods of producing recombinant proteins and peptides from transformed duckweed plants are also disclosed.
Patent CA-2290988-A1 (CA)
Title: Replenishable stent and delivery system
Inventor: BARRY JAMES
IPC: A61M29/02
Filed: 1998-06-02
Abstract: Apparatus and a method for treating an irregularity in a wall of a vessel (20) of a patient defined by an irregular or afflicted wall portion (23) with adjacent normal wall portions (24, 25) comprises a catheter (30) having a distal end portion (34) for being guided through the vessel to the site of the irregularity. A balloon (35) associated with said distal end portion of the catheter for selective inflating to contact the walls of the vessel urges a stent (36) carried by the distal end portion of the catheter in a constricted condition for passage through the vessel into an expanded form with the stent spanning the afflicted wall portion and contacting the adjacent wall portions. The catheter is formed with lumens (37, 38) for inflating the balloon, for receiving a guidewire (31) for guiding the catheter through the vessel, and for connecting a port (42) in the catheter proximate the afflicted wall portion to enable delivery of a therapeutic agent into the vessel to contact the stent and the irregular wall portion.
Patent CA-2292956-A1 (CA)
Inventor: CIOCCA PAOLO
IPC: B32B27/30
Filed: 1999-12-17
Abstract: The invention relates to a biodegradable multilayer film material suitable for use in the manufacture of ostomy/urostomy bags and pouches comprising a gas barrier layer and two outer layers of biodegradable ester-amide copolymers.     The new multilayer gas barrier film is 100% biodegradable and has improved softness and quietness characteristics.
Patent CA-2293250-A1 (CA)
Inventor: GOLI SURYA K
IPC: A61K45/00
Filed: 1998-06-10
Abstract: The invention provides a new human phosphatidylinositol transfer protein gamma (PITP.gamma.) and polynucleotides which identify and encode PITP.gamma.. The invention also provides expression vectors, host cells, agonists, antibodies and antagonists. The invention also provides methods for treating disorders associated with expression of PITP.gamma..
Patent CA-2296524-A1 (CA)
Title: Stent for treating pathological body vessels
Inventor: STRECKER ERNST PETER
IPC: A61F2/86
Filed: 1998-01-24
Abstract: A known method for treating pathological body vessels is the implantation of stents (1) as an extended filament (2), by means of a catheter (22), which springs into a given form only once at the implantation site, as a result of its thermo-memory property or its elasticity. The invention relates to a new kind of stent (1), created in order to improve the flexibility and stability of the stent. This is achieved in that the stent filament or stent filaments (2, 2') are present in the form of at least two opposed spirals (3, 3'). The filament (2) consists of a material with high elasticity or with thermo-memory properties. The stent (1) can be covered with a structure made of pieces of fabric and/or fibres, and serves in this way as a stent graft. The new stent demonstrates high stability and flexibility. The stent can be introduced into a body vessel by means of a lumen, which essentially corresponds to the outside diameter of the filaments (2, 2') forming the stent (1), by means of catheter (22), and expands in the point of destination to a large-lumen tubeshaped implant.
Patent CA-2297029-A1 (CA)
Inventor: EFREMKINE VLADIMIR ANDREEVICH
IPC: B67D1/08
Filed: 1998-07-16
Abstract: An apparatus for providing heat-transfer (cooling) of a potable substance (e.g. a beverage) consists essentially of heat-exchangers (101, 14, 15, 19) which are placed in operative association with a barrel (10) for the beverage.  The transfer of heat to and from the heat-exchangers is controlled by means of a thermo-electric block (21) and an associated regulator (22) operatively associated with a cooling system including a radiator (25), a fan (26) and a pump (27). The beverage is dispensed from the barrel (10) through a dispenser head (13) assisted by a gas supply (17) and tubing such as "Python" multibore tubing (18) to a dispenser unit (20).
Patent CA-2297349-A1 (CA)
Title: Power amplifier arrangement
Inventor: CORNIL JEAN-PHILIPPE ROBERT AD
IPC: H03F3/30
Filed: 2000-01-27
Abstract: An amplifier arrangement includes a class-G amplifier, biased by a first and a second pair of bias voltages, a drive control circuit and a second amplifier (C) biased by the second pair of supply voltages, the drive control circuit (DCD) thereby being adapted to turn on said second amplifier (C) at a higher input signal amplitude than the input signal amplitude at which the current in the class-G amplifier is internally switched over from the first pair to the second pair of bias voltages.
Patent CA-2300389-A1 (CA)
Title: Processing coded video
Inventor: WELLS NICHOLAS DOMINIC
IPC: H04N7/24
Filed: 1998-08-10
Abstract: A method of processing coded video, for example by inserting generated frames, or adjusting values in timing fields, or adjusting the time at which it is output, to adjust the timing of output of decoded video from a decoder receiving the coded video is disclosed, together with corresponding apparatus.  The outputting apparatus may be included in a multiple-source video system, to enable multiple video sources to be synchronised. The output video can be synchronised to a studio reference clock.
Patent CA-2300706-A1 (CA)
Inventor: HOLZHEU MICHAEL
IPC: G06F17/30
Filed: 2000-03-13
Abstract: The basic idea comprised of the present invention is to represent a graph structure with the help of links, e.g., HTML links, by aid of which the user can navigate through the output of the name space and to avoid repeated work, e.g., display, output, etc., of the same object of a directed graph having meshes during scanning the graph by generating such a link to the location in which the object was output before instead of outputting it repeatedly. This is achieved by generating and maintaining a reference list during scanning the graph in which each object is identified uniquely and some information is stored for each object whether the object was already processed or not. In case it was already processed just a HTML link to said prior output is generated.  Otherwise the object is processed, e.g., is output and the list is updated correspondingly. By using such an HTML link an output structure can be realized which enables the user to quickly understand the particular structure of the graph and to realize easily when there are different paths leading to one and the same object.
Patent CA-2300991-A1 (CA)
Title: Apparatus for drying wet porous bodies under subcritical temperatures and pressures
Inventor: KIRKBIR FIKRET
IPC: F26B21/14
Filed: 1998-07-16
Abstract: An improved apparatus, and related method of operation, is described for rapidly drying large monoliths of glass, ceramic and/or composite material, under subcritical conditions, while minimizing the risk of cracking the monolith during the drying process. The apparatus incorporates a pressure chamber (15) for carrying the monolith (11) to be dried, with no significant limitation on the size of the monolith relative to the size of the chamber. The monolith (11) is initially immersed in a suitable drying solvent (23), and the temperature of the pressure chamber (15) is raised to a predetermined value below the solvent's critical temperature, which raises the pressure to a predetermined value, likewise below the solvent's critical pressure. At a selected time during the drying process the pressure chamber (15) is connected to a diffusion chamber (33), to draw away and condense solvent vapor. This drawing away of solvent vapor continues until the monolith (11) is dry, at which time the pressure chamber (15) is purged with an inert gas and then depressurized in a controlled manner.  The apparatus thereby is configured to dry the monolith at an even lower subcritical pressure than previous apparatus of this kind, leading to increased safety and reduced operating expenses.
Patent CA-2301087-A1 (CA)
Title: Circuit de commande pour capteurs d'ensemble d'images et commande automatique d'eclairage
Inventor: BECHTEL JON H
IPC: H04N5/335
Filed: 1998-09-15
Abstract: La présente invention concerne un système de commande (1, 2) permettant de commander un capteur (3) d'ensemble d'images et de régler la communication entre ce capteur (3) d'ensemble d'images et un microcontrôleur (5), à l'aide d'une interface de communication (6) série. Ce système de commande (1, 2) peut commander efficacement différentes fonctions dudit capteur (3) d'ensemble d'images telles que le fenêtrage, le mode de fonctionnement, la sensibilité, et d'autres paramètres destinés à réduire le débit des données. Un aspect important de cette invention concerne le fait que ledit circuit de commande (1, 2) peut être facilement et efficacement configuré en CMOS avec relativement peu de broches de sortie, ce qui permet au circuit de commande (1, 2) d'être facilement et efficacement intégré dans des capteurs (3) d'ensemble d'images à base de CMOS, ledit microcontrôleur (5) réduisant le nombre de composants du circuit, et ainsi le coût total du système.
Patent CA-2301684-A1 (CA)
Title: Peptides comportant une sequence immunodominante derivant de la glycoproteine de l'oligodendrocyte myelinique humain
Inventor: ANDERSSON MAGNUS
IPC: C07K14/47
Filed: 1998-09-11
Abstract: L'invention porte sur un peptide comportant une séquence immunodominante dérivant de la glycoprotéine de l'oligodendrocyte myélinique humain (MOG), sur des molécules d'acide nucléique codant pour ledit peptide, et sur l'emploi dudit peptide ou dudit acide nucléique à des fins de thérapie médicale et de criblage.
Patent CA-2303453-A1 (CA)
Inventor: LU MING
IPC: H04B7/26
Filed: 2000-03-30
Abstract: The invention provides a power control methodology that increases the performance and the throughput of wireless communication systems. In particular, the invention provides a reverse jamming prevention process that efficiently utilizes power resources in a communication system such as CDMA. The invention advantageously prevents reverse jamming due to link imbalance that results from differences in forward and reverse link coverage. According to the invention, an evaluation set (e-set), which is a super set of the active set of base transceiver stations serving specific users, is determined to prevent the negative effects of reverse jamming. Excessive interference problems in the reverse link, particularly in high-speed wireless systems, are thus avoided.
Patent CA-2304814-A1 (CA)
Title: Gene therapy approaches to supply apolipoprotein a-i agonists and their use to treat dyslipidemic disorders
Inventor: DASSEUX JEAN-LOUIS
IPC: A61P31/04
Filed: 1998-09-28
Abstract: The invention relates to genetic approaches to supply nucleotide sequences encoding modified forms of the native forms of apolipoprotein A-I (ApoA-I): mature ApoA-I, preproApoA-I and proApoA-I; including native ApoA-I modified to contain ApoA-I agonists, peptides which mimic the activity of ApoA-I; ApoA-I superagonists, peptides which exceed the activity of native ApoA-I; and modified native ApoA-I having one or more amphipathic helices replaced by the nucleotide sequences of one or more ApoA-I agonists; for the treatment of disorders associated with dyslipoproteinemia, including cardiovascular disease, atherosclerosis, restenosis, hyperlipidemia, and other disorders such as septic shock.
Patent CA-2306259-A1 (CA)
Title: Prevention of sand plugging of oil well pumps
Inventor: MILLS RAY G
IPC: E21B43/12
Filed: 2000-04-19
Abstract: A method and apparatus for unblocking particulate plugs that develop in a well that produces fluid laden with suspended particles when a pump in the well is idled are described. In order to remove the plugs, a valve is inserted in the production tubing above the pump, the valve permitting the well fluid to flow up past the valve but inhibiting the well fluid from flowing down past the valve so that a majority of particles that settle from the well fluid when the pump is idle are trapped above the valve and do not plug the pump. A volume of well fluid trapped between the bottom of the valve and the top of the pump permits pressure waves induced by starting and stopping the pump to be generated. The pressure waves force fluids past the valve until the particles in the plug are resuspended to permit production to resume. The advantage is a simple, low cost solution to a long standing problem which required pulling of the production tubing from the well in order to remove the particulate plug.
Patent CA-2313557-A1 (CA)
Title: Secure mutual network authentication protocol
Inventor: MACKENZIE PHILIP DOUGLAS
IPC: G06F21/44
Filed: 2000-07-06
Abstract: A password-only mutual network authentication protocol and key exchange protocol using a public key encryption scheme in which a server generates a public key / secret key pair and transmits the public key to a client. The client determines whether the public key was chosen in an acceptable manner, and if so, continues with the protocol. Otherwise, the client rejects authentication. If the protocol is continued, in one embodiment the client generates a parameter p as a function of the public key and a password (or, in an alternate embodiment, as a function of the public key and a function of a password). If the public key space mapping function F PK applied to p, F  PK(p), is an element of the public key message space, then the protocol continues. If F  PK(p) is not an element of the public key message space, then the client determines to reject authentication, but continues with the protocol so that the server does not gain any information about the password. If the client determines to reject authentication, it will terminate the protocol at a later step at which time the termination of the protocol cannot leak any sensitive information. If both the client and the server accept authentication, then session keys are generated for subsequent secure communication between the client and server. Specific embodiments are disclosed in which RSA is used as the public key encryption scheme.
Patent CA-2313656-A1 (CA)
Title: Flange device with finished surface
Inventor: ZAMAN KAMRAN U
IPC: G03G15/05
Filed: 2000-07-10
Abstract: An end flange device is capable of translating an externally-supplied rotational or torque drive force to a hollow cylindrical electrophotographic imaging member in a copying or printing machine. The flange device includes a flange support member and flange made from a conductive plastic and preferably from a composition including polycarbonate and carbon fiber. The flange has a specified outer surface finish that insures an optimum frictional relationship between the flange outer diameter and the imaging member inner surface. Mounting the flange device to the imaging member does net require an adhesive material due to an interference fit, nor the use of a separate ground member. since the flange device is conductive.      Matching the coefficients of thermal expansion of the flange and imaging member results in maintaining the interference fit buying the machine operation.
Patent CA-2323631-A1 (CA)
Title: Recombinant onconase, and chemical conjugates and fusion proteins of recombinant onconase
Inventor: LEUNG SHUI-ON
IPC: C07K19/00
Filed: 1999-03-11
Abstract: Recombinantly-produced Onconase molecules and fusion proteins containing the same are disclosed. The recombinantly-produced Onconase molecule has the sequence of native Onconase, retains the proper folding of native Onconase and has cytotoxic activity similar to that of Onconase purified from oocytes of Rana pipiens. cDNA coding for Onconase is extended by one triplet which codes for N-formyl-methionine. When expressed recombinantly, the mutant Onconase has N-formyl-methionine as the N-terminal amino acid, and glutaminyl as the penultimate N-terminal residue. Following expression, the N-formyl methionine residue is cleaved and the penultimate glutaminyl residues are cyclized to produce Onconase with an N-terminal pyroglutamate residue, and hence the same structure and function as native Onconase.
Patent CA-2326313-A1 (CA)
Inventor: LUND MARK THOMAS
IPC: B05B15/02
Filed: 1999-03-22
Abstract: The present invention provides a spray nozzle (22) with both desirable aesthetic and functional attributes. The spray nozzle includes a central orifice (31) and a plurality of blind recesses (25) concentrically disposed around the central orifice, as well as an annular channel (23) connecting all of the blind recesses. The recesses and the channel each individually provide desirable aesthetic properties, while in combination they each reduce the likelihood of product residue buildup in the other. The recesses interrupt the smooth walls of the channel to divert liquid product out of the channel before it can dry out.
Patent CA-2328941-A1 (CA)
Title: Inappropriate site management software
Inventor: HUGHES PATRICK ALAN
IPC: H04L29/06
Filed: 1999-04-20
Abstract: A method and system for controlling access to a database, such as the Internet. Said system is optimized for networks and works with a proxy server. Undesirable content from the World Wide Web (WWW) is filtered through a primary "Filter List" and is further aided by a Uniform Resource Lo-cator keyword search. Depending on the threshold sensitivity setting which is adjusted by the adminis-trator, a certain frequency of attempts to access re-stricted material will result in a message being sent to an authority figure.
Patent CA-2330521-A1 (CA)
Title: Coiled tubing injector with improved traction
Inventor: GRAVES RANDALL SCOTT
IPC: B65H51/14
Filed: 2001-01-09
Abstract: A coiled tubing injector includes two chains mounted for continuous, opposing rotation and aligned to grip between the continuous tubing. Behind a portion of each chain is a straight skate that presses gripper elements on the chain against the tubing as it passes between the chains. The skate includes a beam. Rollers are mounted on carriers, and the carriers slide into slots formed on the beam. A resilient pad is placed between the carriers and the beam. The gripper elements roll over the rollers as they are being pressed against the continuous tubing. Dimensional variations in gripper elements, rollers, and the roller carriers that may otherwise cause grippers to be out of alignment are accommodated by compression of the pad. Furthermore, the last roller at each end of each skate is mounted for pivoting against a spring in order to deflect as gripper elements turn into, or out of, alignment with the skate.
Patent CA-2331261-A1 (CA)
Title: 2"-deoxy hygromycin derivatives
Inventor: LINDE ROBERT GERALD II
IPC: C07H15/26
Filed: 1999-04-08
Abstract: This invention relates to compounds of formula (1) and to pharmaceutically acceptable salts, prodrugs and solvates thereof, wherein R1 and R2 are as defined herein. The compounds of formula (1) are antibacterial and antiprotozoal agents that may be used to treat various bacterial and protozoal infections and disorders related to such infections. The invention also relates to pharmaceutical compositions containing the compounds of formula (1) and to methods of treating bacterial and protozoal infections by administering the compounds of formula (1).
Patent CA-2331861-A1 (CA)
Title: Removal of impurities from a hydrocarbon component or fraction
Inventor: PEMA ATOOL GOVAN
IPC: C10G21/20
Filed: 1999-05-07
Abstract: A process for removing impurities from a hydrocarbon component or fraction comprises mixing, in a liquid-liquid extraction step, an impurity-containing liquid hydrocarbon component or fraction, as an impure liquid hydrocarbon feedstock, with an acetonitrile-based solvent. Thereby, at least one impurity is extracted from the hydrocarbon component or fraction into the solvent. There is withdrawn from the extraction step, as a raffinate, purified hydrocarbon component or fraction, while there is withdrawn from the extraction step, as an extract, impurity-containing solvent.
Patent CA-2332317-A1 (CA)
Inventor: LUENGO JUAN I
IPC: A61P31/10
Filed: 1999-05-20
Abstract: Invented are G-CSF mimetics. Also invented are selected octacyclic compounds , pharmaceutical compositions containing these compounds, and methods of using  these compounds as G-CSF mimetics. Also invented are novel processes used in  preparing these compounds.