baber/WOPTO huggingface dataset:
Patent CA-2195262-C (CA)
Inventor: UBASAWA MASARU
IPC: C07F9/6561
Filed: 1997-01-16
Granted: 2005-08-09
Abstract: A phosphonate nucleotide compound having antiviral activity and is useful for an orally available and highly safe antiviral agent, which is represented by the following formula (I):    wherein R1 represents hydrogen, a C1-C6 alkoxy, a halogen-substituted C1-C4 alkoxy, halogen, amino, or nitro; R2 and R3 independently represent hydrogen, a C1-C2 2 alkyl, an acyloxymethy, an acylthioethyl, or a halogen-substituted ethyl; R4 represents hydrogen, a C1-C4, alkyl, a C1-C4 hydroxyalkyl, or a halogen-substituted C1-C4, alkyl; and X represents carbon or nitrogen.
Patent CA-2196407-C (CA)
Inventor: CHANEY JOHN WILLIAM
IPC: H04N5/00
Filed: 1995-08-04
Granted: 2000-04-04
Abstract: A smart card that includes a descrambler for descrambling entitlement information and data provides improved access control by controlling the manner in which the entitlement information portion of the data stream is passed through the smart card. Entitlement data that is descrambled and used in the smart card for functions such as key generation is re-inserted in scrambled form in the high speed output data signal from the smart card. A  variable delay device is included in the smart card for controlling when scrambled entitlement data is re-inserted into the data stream. Varying the delay permits establishing a desired timing relationship between the re-inserted data and other data in the data stream that is output from the smart card. For example, scrambled entitlement data in the output data stream can be made to exhibit substantially the same timing relationship to other data that exists in the input data stream.
Patent CA-2199714-C (CA)
Title: Minimal shipping container and method of construction
Inventor: APPLEGATE STEPHEN SHELBY
IPC: B31B50/00
Filed: 1995-09-08
Granted: 2001-10-16
Abstract: A minimal container (10), made of pre-cut corrugated cardboard strips (12, 1 4, 16) fastened together at overlapping surfaces and folded to form a rectangul ar frame, without generating any scrap corrugated cardboard. The Minimal Container (10) is intended to protect contents for one shipping application.  Each side (20) and top (22) and bottom ends (24) of the rectangular frame ha ve an open area. Plastic film (18) is wrapped around the Minimal Container (10) , enclosing it and being connected to it, not only for dust and weather protection, but also to enhance structural rigidity of the Minimal Container  (10). A method of constructing the Minimal Container (10) includes gluing or  stapling the corrugated cardboard strips (12, 14, 16) together to form a ladder structure; scoring, slitting, and folding the ladder structure to for m the rectangular frame; fastening the rectangular frame together; loading contents into the rectangular frame; enclosing the rectangular frame with a flexible plastic film wrap (18); and connecting the flexible plastic film wr ap (18) to the rectangular frame.
Patent CA-2199801-C (CA)
Inventor: PHOON KIN YUEN
IPC: A47C7/70
Filed: 1995-08-29
Granted: 2001-10-30
Abstract: A writing tablet assembly for attachment to a chair comprising: a writing tablet; a frame for supporting the writing tablet and for attachment to a chair; and a swivel joint interposed between the writing tablet and the fram e to define a first predetermined plane of rotation of the swivel joint with respect to the frame and a second predetermined plane of rotation of the writing tablet with respect to the swivel joint.
Patent CA-2203968-C (CA)
Inventor: GUO XIANG-YAO
IPC: C09D111/00
Filed: 1997-04-29
Granted: 2000-12-19
Abstract: The performance of natural rubber based products, such as engine mounts which are susceptible to degradation caused by heat, oxidation, ozone attack or ultraviolet radiation is significantly improved by coating exposed surfaces of the product with a polymeric material having excellent heat and oxidation resistance properties.  By applying such polymeric coatings having high resistance towards oxidation under excessive heat, the C=C bonds of the natural rubber are protected from oxygen and ozone attacks, thereby allowing its strain-crystallization characteristic properties to be retained.
Patent CA-2213610-C (CA)
Inventor: VINIK AARON I
IPC: A61K38/18
Filed: 1996-02-12
Granted: 2013-12-03
Abstract: Cellophane wrapping (CW) of hamster pancreas induces proliferation of duct epithelial cells followed by endocrine cell differentiation and islet neogenesis. Using the mRNA differential display technique a cDNA clone expressed in cellophane wrap but not in control pancreata was identified.  Using this cDNA as a probe, a cDNA library was screened and a gene not previously described was identified and named INGAP.
Patent CA-2215110-C (CA)
Title: Tole d'acier zinguees (zinc et alliage de zinc) par immersion a chaud presentant peu de surfaces denudees et d'excellentes caracteristiques d'adherence du revetement, et methode de fabrication connexe
Inventor: TOTSUKA NOBUO
IPC: C23C2/26
Filed: 1997-01-13
Granted: 2001-08-14
Abstract: L'invention concerne une tôle d'acier galvanisé à chaud pour automobiles, une tôle d'acier allié galvanisé à chaud, et leur procédé de production. Cette tôle d'acier galvanisé présente une quantité réduite de défauts par suite d'un placage défectueux, ainsi que d'excellentes caractéristiques d'adhérence de dépôt par contact, et est caractérisée en ce qu'elle possède des oxydes de métaux plus oxydables que le fer situé au-dessous du placage, ces oxydes étant formés lors du laminage à chaud. Selon le procédé de production, la température d'enroulement lors du laminage à chaud est égale ou supérieure à 600  DEG C, le refroidissement s'effectue à une vitesse faible, et les oxydes demeurent intacts également dans les étapes ultérieures.
Patent CA-2216401-C (CA)
Inventor: OBERG MAGNUS
IPC: H04B10/27
Filed: 1996-03-26
Granted: 2003-08-12
Abstract: The present invention concerns an optical network which is arranged to ensur e communication between nodes in a lower-order loop and a higher-order loop wh en there is an interruption in the lower-order loop or in the event of hub failure. Each lower-order loop consists of a bus network (5) with hubs and o ne or a plurality of nodes (A-D). Two optical fibres (1, 2) connect the nodes i n each bus network (5) and are used for communication in opposite directions between the nodes. Each bus network comprises precisely two hubs (H1, H2) of  which the first closes the bus network end at the first end thereof and the second closes the bus network at the other end. The hubs connect the bus networks (5) in a lower-order loop and join this loop to a higher-order loop . Each node in the bus network is arranged to communicate with each hub. The invention also concerns a process for channel allocation in the aforemention ed optical network. The channel allocation can be carried out so that channels received in one node are re-used for transmission on the same fibre from the  same node.
Patent CA-2218121-C (CA)
Inventor: ZIRNGIBL MARTIN
IPC: G02B6/34
Filed: 1997-10-08
Granted: 2001-06-05
Abstract: A compact waveguide grating router is constructed by forming at least first and second free space regions, first and second sets of optical ports, and a grating array, onto a substrate.. The grating array is coupled to the first free space region and the second free space region. A first plane defining a first reflective surface is introduced into the first free space region, and a second plane defining a second reflective surface is introduced into the second free space region. The first plane is oriented such that incident optical signals from the first set of optical ports are reflected to the grating array, and the second plane is oriented such that incident optical signals from the grating array are reflected to the second set of optical ports. The first and second planes are provided, for example, by cleaving, cutting, etching, sawing, or any other suitable technique. The first and second planes enable the input and output ports to be folded back into previously unoccupied space. The aforementioned techniques enable the size of any conventional waveguide grating router to be substantially reduced.
Patent CA-2218270-C (CA)
Title: Text index registration and retrieval method
Inventor: KAWASHIMO YASUSHI
IPC: G06F17/30
Filed: 1997-10-10
Granted: 2001-04-17
Abstract: A text data registering and retrieving method capable of improving the transaction processing performance is provided.  The document number of a document for which deletion or replacement has been newly requested is registered in an updated document number list, the text data of the document for which insertion or replacement has been newly requested is registered in an update text buffer, the text data stored temporarily in the update text buffer is registered in a plural-character occurrence file defining a text index in a character component file merge step, the data registered in the plural-character occurrence file is retrieved for query terms, the text data stored in the update text buffer is retrieved for the query terms, the document number of a document updated or deleted is deleted from the result of retrieval in the plural-character occurrence file, and the result or the document number obtained in the update text buffer is added to the result of retrieval to provide a final retrieval result.
Patent CA-2233440-C (CA)
Title: Polymer electrolyte membrane electrochemical cells and stacks with adhesively bonded layers
Inventor: EINHART JOHANN
IPC: C25B9/23
Filed: 1998-03-27
Granted: 2002-12-24
Abstract: An electrochemical cell stack comprises a plurality of membrane electrode assemblies interposed between pairs of separator plates. The stack comprises adhesively bonded layers. Preferably each membrane electrode assembly is adhesively bonded to the adjacent pair of separator plates. The adhesive bond between the plate and membrane electrode assembly preferably provides a substantially gas and liquid-tight seal around the perimeter of the electrochemically active area of the membrane electrode assembly and around any fluid manifold openings formed therein. Alternatively, or in addition, adjoining pairs of separator plates in an electrochemical cell stack may be adhesively bonded together. Such pairs of adhesively bonded plates may define cooling spaces between neighboring cells. Stacks comprising a plurality of individual cell modules may be formed, each module comprising a membrane electrode assembly bonded to a pair of separator plates.
Patent CA-2243244-C (CA)
Title: Multifunctional portable telephone
Inventor: ROBB GARRY DOUGLAS
IPC: H04W88/02
Filed: 1997-01-17
Granted: 2004-09-14
Abstract: A personal interactive audio visual data entry system includes a hand head audio visual data entry unit having a camera reading sensor on a rotational pivot for sensing images in various positions, peon to person MPEG-4 compatible low bit rate audio visual interactive communications algorithm, commands andlor data and for producing input signals in response to said sensed commands and/or data, rewritable storage for information relating to stored audio visual images and/or selectable items, a controller (a microprocessor or other processing circuitry) and PCMCIA and associated circuitry and a display screen for displaying visual feedback and/or a user readable representation of the commands and/or stored information for a selected item, and an automated telecommunications interface for various methods of telephonic transmission of information relating to interactive audio visual communications and/or a selected item or items from said storage to a remote processing centre and for telephonic transmission of information relating to selectable items from said remote processing centre to said storage. The hand held unit can be configured to combine the data entry functions with those of audio visual telephony.
Patent CA-2244811-C (CA)
Inventor: JANN ALFRED
IPC: A23J1/06
Filed: 1997-02-05
Granted: 2005-11-15
Abstract: Ice crystal growth inhibiting agents and process for preparing an extract of these agents in which Zoarces viviparus blood is extracted, it is cooled, the supernatant constituting the Zoarces viviparus serum containing the ice crystal growth inhibiting agents is collected, and then the supernatant is frozen.      The present invention also relates to a process for using these agents for the manufacture of a food product.
Patent CA-2247942-C (CA)
Title: Bend-responsive catheter
Inventor: BEN-HAIM SHLOMO
IPC: A61B1/005
Filed: 1997-12-31
Granted: 2007-10-02
Abstract: This invention is an invasive probe apparatus including flexible elongate probe (20) having a distal portion adjacent to a distal end (22) thereof for insertion into the body of a subject, which portion assumes a predetermined curve form when a force is applied thereto.  First and second sensors (28, 30) are fixed to the distal portion of the probe (20) in known positions relative to the distal end (22), which sensors generate signals responsive to bending of the probe. Signal processing circuitry (36) receives the bend responsive signals and processes them to find position and orientation coordinates of at least the first sensor (28), and to determine the locations of a plurality of points along the length of the distal portion of the probe.
Patent CA-2253708-C (CA)
Title: Process for producing a cation-exchanging polymer electrolyte membrane (pem)
Inventor: WITTELER HELMUT
IPC: H01M8/1004
Filed: 1997-04-24
Granted: 2008-09-16
Abstract: A process is disclosed for producing a cation-exchanging membrane. An organic polymer with sulphonic acid groups and finely divided electroconductive particles of a catalyst material is introduced into a liquid phase and the resulting suspension is used to coat at least one-side of a foil made of a cation exchanger material. The process is characterised in that the organic polymer with sulphonic acid groups is soluble in an aprotic polar solvent and contains units of formulas (Ar1X) and (Ar2Y) at least partially substituted by sulphonic acid groups. Ar1 and Ar2 stand for identical or different bivalent arylene radicals, X stands for oxygen or sulphur and Y stands for a carbonyl, sulphoxide or sulphonyl radical. This material is dissolved in a solvent, a finely divided electroconductive catalyst material is suspended in the solution and a foil which contains a polymer cation exchanger with sulphonic acid groups is coated with this suspension. The still solvent-containing coating is treated with a liquid miscible with the solvent but in which the dissolved cation exchanger material is not soluble, so that pores are formed in the resulting film that coats the membrane.
Patent CA-2253980-C (CA)
Inventor: SOE MIN-HYO
IPC: A61K9/70
Filed: 1997-05-22
Granted: 2004-08-17
Abstract: Cette invention concerne une composition à administration locale, biodégradable et à libération prolongée, destinée à être utilisée dans le traitement de la desmodontite, et son procédé de préparation. Ce médicament peut avoir un effet continu et de longue durée lorsqu'on régule son temps de libération et qu'on le maintient dans la poche périodontique sur une durée prolongée. La préparation de cette composition se caractérise par i) l'élaboration des microsphères contenant la substance physiologiquement active, ii) la formation du mélange des microsphères et du polymère soluble dans l'eau tel que des polysaccharides, iii) la transformation du mélange en film ou bande et/ou iv) l'application du film ou bande avec une solution aqueuse cationique telle que le calcium et le barium. Cette composition peut être facilement administrée à l'aide de pinces, ses effets secondaires peuvent être réduits et l'effet de libération de la substance active, en dose minimale, accru, ce qui permet aux patients de se sentir plus à l'aise.
Patent CA-2255253-C (CA)
Inventor: HIRTH DAVID E
IPC: E21B21/10
Filed: 1998-12-03
Granted: 2004-09-14
Abstract: A landing collar is disclosed which defines a sealed cavity around its periphery.   The landing collar has a seat to accept a sphere. Upon application of pressure on the sphere, the pressure rises on fluid in the chamber which surrounds the landing collar. At a predetermined pressure in the chamber, a rupture disc breaks which allows the fluid in the chamber to escape through a restrictor, thus regulating the rate of movement of the landing collar to expose gradually a bypass opening around the landing collar. Because the movement of the landing collar is regulated by the orifice adjacent the rupture disc, shock to the formation below is eliminated.   In the event of sticking of the landing collar, an emergency release is possible since the landing collar is configured in two parts which can be pinned together.  Upon an application of pressure higher than the pressure to break the rupture disc, the shear pins fail and a portion of the landing collar with the sphere disconnects to allow communication to the formation below.
Patent CA-2255443-C (CA)
Inventor: FLEGEL DAVID D
IPC: H01R13/52
Filed: 1998-12-07
Granted: 2002-02-26
Abstract: -15-  A power inlet box for use in a system for interconnecting a power generator to the electrical system of a building. The power inlet box is electrically interconnected with the main electrical panel of the electrical system, such as through a transf er panel and appropriate wiring, cables and fittings. The power inlet box includes a base  member or housing for mounting to the exterior of a building and which defines an inte rnal cavity. The base member includes a front, outwardly facing opening and a top, upwardly f acing opening, each of which provides access to the internal cavity of the base member. The  power inlet box further includes a cover member adapted for engagement with the base mem ber. The cover member includes a front wall which engages and overlies the base membe r to enclose the base member front opening. The cover member further includes a top wall extending rearwardly from the front wall and which overlies the base member upwardly f acing opening. A socket assembly is interconnected with the cover member, and incl udes a power inlet for receiving a connector at the end of a cord for providing power to the building electrical system from the auxiliary generator, through the transfer panel. Flanges extend from the edges of the cover member front and top walls, for overlapping the ends of the base member walls to provide a shingle construction preventing ingress of wa ter into the base member internal cavity. The provision of openings in the base member pr oviding access to the internal cavity in two different directions facilitates manipu lation of wires connected to the socket for placement within the internal cavity when the co ver member is being moved toward the base member for mounting. Further, the provision of s eparate front and top walls on the cover member functions to provide a highly effective ar rangement for preventing ingress of water into the internal cavity through the joint betwe en the cover member and the base member.
Patent CA-2255975-C (CA)
Inventor: BROILLET BERNARD
IPC: G01P21/00
Filed: 1998-12-14
Granted: 2004-02-10
Abstract: A measuring circuit comprising a symmetric transmission line connecting a transducer to a measurement amplifier and to a fault indicating signal amplifier, the transducer delivering symmetric input signals to said amplifiers, the first amplifier delivering a measuring signal representing the difference of its input signals and the fault indicating signal amplifier delivering a fault indicating signal representing the sum of the input signals. An auxiliary signal injected to the terminals of the transducer the invention enables the measuring circuit to evaluate the quality of the measuring circuit during operation of the tested machine and also when the machine is at rest.
Patent CA-2259566-C (CA)
Inventor: BUCKNELL JOHN WENTWORTH
IPC: F16B37/00
Filed: 1997-07-02
Granted: 2007-05-15
Abstract: Cette invention concerne un joint destiné à des systèmes hydrauliques fonctionnant à des températures élevées. Ce joint, qui possède des parties adaptées (19, 20, 49, 50) assurant l'étanchéité à basse pression, est conçu pour se déplacer à travers l'espace devant être scellé lors de pressions plus élevées. Ce joint fait appel à une base inclinée sur une pente (23, 44) ou à une forme de coupelle (73, 74) venant se loger dans une gorge (72), et se compose au niveau de l'espace d'un matériau métallique et élastique.
Patent CA-2260723-C (CA)
Title: A method of resource management at computer controlled telephony hardware
Inventor: MISTRY DHANSUKH NATHUBHAI
IPC: H04M3/58
Filed: 1999-02-04
Granted: 2003-12-30
Abstract: A method of resource management at computer controlled telephony hardware outside the Public Switched Telephone Network (PSTN) operated by a service provider for establishing a call between a service subscriber and another party by facilitating a PSTN voice connection between the service subscriber and the computer controlled telephony hardware, and a PSTN voice connection between the other party and the computer controlled telephony hardware is described. The method involves determining a resource management index associated with the service subscriber, determining a call treatment using the resource management index, and applying the call treatment to the call. Preferably the call treatment is determined using a rule base which stores a call treatment option for each telephone number or Internet Protocol address associated with a service subscriber. The call treatment options preferably include: a) transfer all calls to the PSTN; b) transfer all toll calls to the PSTN; c) transfer no calls to the PSTN; and d) request instructions on a call-by-call basis to determine whether a call is to be transferred to the PSTN. The advantage is potentially significant savings to the service subscriber on toll charges, and a significant reduction in trunk provisioning requirements for the service provider.
Patent CA-2262866-C (CA)
Title: Method of treating tobacco to reduce nitrosamine content, and products produced thereby
Inventor: WILLIAMS JONNIE R
IPC: A23G4/06
Filed: 1997-08-05
Granted: 2006-07-04
Abstract: Methods of reducing the content of and preventing formation of carcinogenic nitrosamines in harvested leafy plants such as tobacco and marijuana, are disclosed. The methods are directed to subjecting the plant to microwave radiation, at appropriate times in the cure cycle. With tobacco, products suitable for human consumption, such as cigarettes, cigars, etc.. can be made in accordance with the present invention, having contents of tobacco-specific nitrosamines on a par with fresh-cut, green tobacco. In preferred embodiments, the resultant tobacco products are dried, golden-yellow leaves having almost negligible amounts of the known carcinogens NNN and NNK, in comparison to conventionally cured tobacco.
Patent CA-2271043-C (CA)
Inventor: POLLOCK ANTHONY J
IPC: B62D53/02
Filed: 1998-09-28
Granted: 2006-08-01
Abstract: A bolt-together hitch for a machine having articulatable first and second sections, including a generally annular yoke member of cast steel having a cylindrical portion which is trunnion mounted by bearings in a longitudinal bore formed by the first section and a tube member of forged steel bolted end to end to the yoke member, the yoke member integrally forming brackets to provide an articulated pivot joint with the second section.