baber/WOPTO huggingface dataset:
Patent CA-2148061-A1 (CA)
Title: Method for controlling fluid loss in high permeability formations
Inventor: WEAVER JIMMIE D
IPC: C09K8/10
Filed: 1995-04-27
Abstract: The present invention provides a method of controlling fluid loss to a permeable formation penetrated by a wellbore.      A novel fluid loss agent is prepared by forming a crosslinked polymer gel which then is sheared to break the gel into discrete particles. A slurry then is formed of the particles by dispersing the particles in an aqueous fluid having a density similar to that of the gel particles . The slurry then is introduced into contact with the permeable formation and a filter cake of the particles is formed upon contact with the formation and loss of the slurrying fluid to the formation.      The filter cake provides further fluid loss control to the permeable formation.
Patent CA-2148644-A1 (CA)
Title: Break-away lure saver
Inventor: CASSAB ARI JORDAN
IPC: A01K91/04
Filed: 1995-05-04
Abstract: It is desirable to have a lure saving device that is more versatile, less costly, and more reliable in performing its function as a lure saving device. The present invention, entitled "Break-Away Lure Saver" is a lure saver that encompasses these desirable qualities, and relates to common lure savers only in what it is intended to do. This invention acts as a replacement hook for lures, and is intended to function as a part of the lure. This lure saving device comprises, ahook, a slip ring, a body disposed between the hook and the slip ring and connected thereto, and a shield surrounding the body. The body of this invention, is rated at variable strengths similar to the way in which fishing lines are rated, and is intended to break apart under a given load, not exceeding that of the fishing line it is intended to be used with. In a snag situation the angler need only pull on his/her fishing line, with sufficient force so that the body of the invention breaks apart and releases the body of the lure. The angler can then retrieve thebody of his/her lure and need only replace what's left of the invention with a new one.
Patent CA-2151007-A1 (CA)
Title: Metering apparatus
Inventor: STEPHENSON STANLEY WARD III
IPC: G03B17/42
Filed: 1995-06-05
Abstract: A metering apparatus for a filmstrip forms with at least one perforation for each film frame including a metering member which is configured for engaging at least one perforation for each film frame, so as to prevent the filmstrip from moving in a film advancing direction.  According to the invention, the metering member includes at least one cam follower for contacting a trailing edge of a perforation to cam the metering member out of engagement with the filmstrip when the filmstrip is moved in an opposite film rewinding direction.  The metering apparatus also includes a mechanism for retracting the metering member to allow the filmstrip to be subsequently advanced for film frame exposure. The retracting mechanism is mechanically coupled to the release of a high energy lever used for tripping the shutter blade of a camera so that advancement and exposure of the filmstrip can be controlled in a simple manner.
Patent CA-2154229-A1 (CA)
Title: Method of the surface processing of an article by sulfonation and neutralization
Inventor: TINANT ANNE
IPC: C08J7/12
Filed: 1995-07-19
Abstract: Surface treatment of (part of) an article with a plastic surface involves: (a) a sulphonation stage; and (b) a stage of neutralisation with a polyamine cpd. Pref. the plastic is a high density polyethylene. The amine cpd. is a polyalkylene polyamine, an alkylene polyamine or a polyalkylene imine, esp. polyethylene imine. A mixt. of polyamines may be used in at least one neutralisation stage. The treatment may be applied during the mfr. of the article.
Patent CA-2154890-A1 (CA)
Title: 3'-aziridino-anthracycline derivatives
Inventor: RIPAMONTI MARINA
IPC: A61K31/70
Filed: 1994-11-21
Abstract: Anthracycline glycosides of general formulae (1) and (2), wherein R1 is hydrogen or a methoxy group; R2 is hydrogen, a hydroxy group or represents an acyloxy residue of formula (3): -O-COR5 wherein R5 is a linear or branched C1-C8 alkyl, an aryl group or a heterocyclic mono or bicyclic ring, each of which may be unsubstituted or substituted with (a) an amino group NR6R7 in which R6 and R7 are independently hydrogen or C1-C4 alkyl or (b) a carboxy group; R3 and R4 both represent hydrogen or one of R3 and R4 is hydrogen and the other is hydroxy group or a group of formula -OSO2R8 in which R8 may be a linear or branched alkyl group containing from 1 to 6 carbon atoms or an aryl group unsubstituted or substituted by 1 to 3 substituents each of which may independently be a linear or branched alkyl or alkoxy group of from 1 to 6 carbon atoms, a halogen atom or a nitro group; and pharmaceutically acceptable salts thereof; are active as antitumor agents.
Patent CA-2155586-A1 (CA)
Inventor: ROBROCK RICHARD BARKER II
IPC: H04L45/80
Filed: 1995-08-08
Abstract: A broadband intelligent network (50) employs an ATM switch or other fast-packet switch (51) in a fiber optic, fast-packet communication system.  The ATM switch (51) is directly coupled (53) through one of its ports to a network service control point (61) for the implementation of requested services without the use of an intermediate common channel signaling system.  ATM cells, identified as signaling cells, carry customer service requests and are automatically routed through the ATM switch to the network service control point (61).  The service control point (61) determines the requested service and executes a corresponding programmed procedure (210).     Connection service requested by a particular signaling cell is implemented by the service control point (61) sending a command cell through a port of the ATM switch (51) to instruct the switch connection management processor (64) to establish a switched virtual circuit for the requested connection.
Patent CA-2160440-A1 (CA)
Inventor: LANGE LOUIS G III
IPC: A23L1/30
Filed: 1995-10-12
Abstract: This invention encompasses methods for manufacturing purified, high molecular weight sulfated polysaccharide compositions that inhibit pancreatic cholesterol esterase and lower cholesterol in the blood stream.
Patent CA-2161610-A1 (CA)
Title: Chipper shredder
Inventor: FIRDAUS USMAN
IPC: B02C13/282
Filed: 1995-10-27
Abstract: An improved chipper shredder is disclosed having inwardly extending teeth affixed to the housing displaced from the discharge opening so as to provide additional shredding action.
Patent CA-2162814-A1 (CA)
Title: Sport ball for roller hockey
Inventor: AIELLO JEFFREY A
IPC: A63B43/04
Filed: 1995-11-14
Abstract: A sport ball for use as a puck in roller hockey or street hockey has a substantially smooth spherical outer surface and a substantially smooth inner surface.  The hollow interior is filled to 10 to 25% with a liquid, such as water.
Patent CA-2163101-A1 (CA)
Inventor: MIECZKOWSKA JOLA E
IPC: H01M4/62
Filed: 1994-05-10
Abstract: The invention relates to primary alkaline cells containing a manganese dioxide cathode active material. Anatase titanium dioxide is added to the cathode. The result is an increase in the useful service life. Typically the anatase titanium dioxide is used in an amount between 0.1 and 5 percent by weight of the cathode active material.
Patent CA-2163859-A1 (CA)
Title: Multivane radial fan designing method and multivane radial fan
Inventor: SHINBARA NOBORU
IPC: F04D29/28
Filed: 1995-04-21
Abstract: The specifications of a vane wheel are determined so that they have the relation of >=-0.857Z1+1.009 (wherein =r0/r1, Z1=(r1-r0)/[r1-nt/(2.pi.)], r0:  inner radius of the vane wheel, r1: outer radius of the vane wheel, n: number of radial vanes, t: thickness of the radial vanes).
Patent CA-2165198-A1 (CA)
Title: Methods of construction of evacuated glazing
Inventor: COLLINS RICHARD EDWARD
IPC: E06B3/673
Filed: 1994-06-07
Abstract: A thermally insulating glass panel comprising two spaced-apart sheets of glass [10,11] enclosing a low pressure space [30] and interconnected by a glass solder edge seal [13] and an array of support pillars [12]; characterized in that the glass sheets [10,11] are sized or configured, or both, such that their edges [14,16] are not in registration , and, at any point around the periphery of the panel, the edge [14] of one of the sheets extends beyond the edge of the other in order to provide a peripheral stepped cavity in which solder glass material for forming the edge seal is deposited prior to being melted and fused. A method of forming the edge seal [13] for a thermally insulating glass panel comprising two spaced apart sheets of glass [10,11] enclosing a low pressure space [30] interconnected by a glass solder edge seal [13] and an array of pillars [12], the method characterized in that it includes the steps of (a) preparing first and second sheets of glass [10,11] such that when they are brought together their edges [14,16] are not in registration, and at any point around the periphery of the panel the edge [14] of one of the sheets of glass extends beyond the edge of the other; (b) depositing a strip of solder glass around the periphery of the panel on the extending edges of the glass sheets; (c) heating the panel to melt the solder glass such that it runs between the glass sheets; and (d) cooling the panel to solidify the solder glass.
Patent CA-2170405-A1 (CA)
Title: Activin receptors-like kinase (alk), belonging to the tgf receptor family and/or to the bmp receptor family
Inventor: WOZNEY JOHN M
IPC: A61K38/00
Filed: 1994-09-07
Abstract: Novel serine/threonine receptor proteins and BMP receptor proteins are disclosed, as well as DNA molecules encoding said proteins and methods of using the receptor proteins. Further disclosed are truncated BMP receptor proteins and molecules which act as ligands to said BMP receptor proteins.
Patent CA-2170999-A1 (CA)
Title: Optical fibre organizer
Inventor: MACKEN LUK JOZEF
IPC: G02B6/24
Filed: 1994-09-02
Abstract: An optical fibre organizer, which comprises: 1) first and second ports through which optical fibres can pass; 2) an organizer drum positioned with respect to the ports such that a fibre passing between them is constrained by an outer surface of the drum to a minimum bend radius at least equal to the critical bend radius of that fibre; in which the drum is hollow allowing a free end of the fibre to pass from one of the ports to the interior of the drum and to be stored therein at a minimum bend radius greater than at which it suffers permanent damage.
Patent CA-2172636-A1 (CA)
Title: Flexible cube-corner retroreflective sheeting
Inventor: SMITH KENNETH L
IPC: B32B3/30
Filed: 1994-10-20
Abstract: A retroreflective article (10) has a body portion (14) and a multiple of cube-corner elements (12) that project from a rear side (20) of the body portion (14). The body portion (14) includes a body layer (18) that contains a light-transmissible polymeric material having an elastic modulus less than 7 x 108 pascals. The cube-corner elements (12) contain a light transmissible polymeric material having an elastic modulus greater than 16 x 108 pascals. A  retroreflective article of this construction can be highly flexed while maintaining good retroreflective performance.
Patent CA-2172918-A1 (CA)
Title: Prion inactivation in connective tissue materials
Inventor: SHENOY VIVEK N
IPC: C07K14/00
Filed: 1996-03-28
Abstract: It has been discovered that it is possible to treat solutions of connective tissue material for the inactivation of prions in a manner such that connective tissue molecules are not adversely affected by the inactivation treatment. For example, solubilized atelopeptide collagen can be treated with sodium hydroxide for the inactivation of prions and other infectious agents without affecting the ability of the solubilized collagen to form stable fibers. In accordance with the present invention, a first method for the treatment of connective tissue materials such as collagen for the inactivation of prions and other infective agents, to obtain at least S logs of protection, comprises the following steps: a) placing the connective tissue material into a liquid solution, whereby the surface area of the connective tissue molecules is exposed, to expose the prions and other infectious agents for treatment; and b) contacting the liquid solution of connective tissue material with sodium hydroxide so that the concentration of sodium hydroxide in said solution ranges from about 0.1 M to about 0.7 M, for a time period sufficient to inactivate the prions and other infective agents without affecting the performance of the connective tissue material, at a temperature of about 25 °C or less.
Patent CA-2174318-A1 (CA)
Inventor: HUDDLE JAMES R
IPC: G01S3/10
Filed: 1995-09-11
Abstract: The invention is a method and apparatus for determining the errors in the orientation coordinates of an antenna array and the spacings of the antennas in the array using radio waves from one or more sources having known positions and an inertial system, the antenna array comprising at least two antennas.  The method comprises the steps of placing the antenna array in one or more specified orientations relative to a reference coordinate system, measuring the phase of each radio wave received by each of the antennas in the antenna array from the one or more radio-wave sources for each orientation of the antenna array, and then determining the errors in the array orientation coordinates using the measured phases.  The method also includes determining the errors in the spacings of the antennas in the array and determining the errors in the orientation coordinates of the reference coordinate system, in both cases using the measured phases. The invention also includes apparatus for practicing the method utilizing an inertial system for maintaining the reference coordinate system.
Patent CA-2176734-A1 (CA)
Title: Method and apparatus for sealing leaks
Inventor: SCHINABECK RAINER
IPC: F16J15/10
Filed: 1994-12-01
Abstract: Leaks can be sealed quickly by methods employing a flexible patch (26) applied by a resilient applicator (3) that can be caused to exert sufficient force against the patch (26) and the leaking surface (1) to stop fluid flow while a leak sealant (30) is curing. The resilient applicator (3) comprises a resilient deformable member (6) having a wall (7) that defines a cavity (8) for receiving the patch (26) entirely within the cavity (8) together with a leak sealant (30) for application to the leak (1).
Patent CA-2178037-A1 (CA)
Title: Composition for providing anti-shudder friction durability performance for automatic transmissions
Inventor: SUMIEJSKI JAMES L
IPC: C10M163/00
Filed: 1996-06-03
Abstract: A composition for use in lubricants and function fluids to provide improved anti-shudder and shudder durability properties to an automatic transmission. The composition comprises alkoxylated fatty amines as well as a mixture of other friction modifiers.
Patent CA-2178091-A1 (CA)
Title: Semiconductor device comprising a ferroelectric memory element with a lower electrode provided with an oxygen barrier
Inventor: WOLTERS ROBERTUS ADRIANUS MARI
IPC: H01L21/8247
Filed: 1995-09-26
Abstract: The invention relates to a semiconductor device comprising a semiconductor body (3) with a semiconductor element (1) with an electrically conducting region (5) on which a capacitor (2) forming a memory element is present with a lower electrode (11), an oxidic ferroelectric dielectric (12), and an upper electrode (13), which lower electrode (11) makes electrical contact with the conducting region (5) and comprises a layer with a conductive metal oxide (112) and a layer (111) comprising platinum. The layer with the conductive metal oxide (112) acts as an oxygen barrier during manufacture. The invention also relates to a method of manufacturing such a semiconductor device. According to the invention, the device is characterized in that the layer comprising platinum (111) contains more than 15 atom % of a metal capable of forming a conductive metal oxide, and in that the layer (112) with the conductive metal oxide is present between the layer (111) comprising platinum and the ferroelectric dielectric (12). A good electrical contact between the lower electrode (11) and the conducting region (5) after manufacture is achieved thereby.
Patent CA-2178251-A1 (CA)
Title: Bipolar suction tonsillar dissector
Inventor: KORANDA FRANK C
IPC: A61B18/14
Filed: 1996-06-05
Abstract: A bipolar suction tonsillar dissector is provided which is especially useful in tonsillectomies and adenotonsillectomies to minimize hemorrhage and tissue damage by promoting surgical efficiencies. The instrument hereof includes a pair of arms connected by a connector plug to define a forceps. One arm includes a tubular suction channel which may be connected to a source of vacuum and presents an opening at the remote end through which undesired or excess fluid may be removed from the dissection site. The other arm includes a dissecting blade for enabling the surgeon to remove or cut away tissue. Advantageously the blade and structure adjacent the opening define electrodes whereby the surgeon may without delay in switching instruments, electrocoagulate hemorrhaging blood vessels and then return to dissection and suction of the blood or other fluid.
Patent CA-2178291-A1 (CA)
Title: Stabilization of polymers
Inventor: KAUFHOLD JOHANNES
IPC: C08K3/00
Filed: 1996-06-05
Abstract: The invention relates to composition  comprising A) a polymer, B) at least one organotin compound of the formula I, Ia, II or IIa R1iSnOj    (I)   or   [R1SnO]m          (Ia)     (II)  or         (IIa) in which i is 1 or 2, j is (4-i)/2, m is > 1 and n is > 3, and R1 and R, independently of one another, are C1-C12alkyl, C) at least one dicarboxylic  acid of the formula III                    HO-CO-R2-CO-OH       (III) and/or the anhydride thereof, in which R2 is arylene which is unsubstituted or substituted by C1-C4alkyl or C1-C4alkoxy, straight-chain or branched alkylene or a group of the formula  -CH=CR3, R3 is hydrogen or methyl, and D) at least one compound from the series consisting of crystalline alkali metal and/or alkaline earth metal alumosilicates. These compositions  have improved thermal and mechanical stability and are easy to process.
Patent CA-2181851-A1 (CA)
Inventor: YAMAZAKI NOBUO
IPC: B62D7/22
Filed: 1996-07-23
Abstract: A work vehicle has steered wheels positioned forwardly of the vehicle relative to the direction of run of the vehicle, the steered front wheels having a caster angle of minus value ranging from -0.5° to -2°. Preferably, the caster angle is set at -1°. As a result, it becomes possible to reduce a steering torque, especially a peak steering torque, and to obviate infiltrating and overshooting feels, thus providing a comfortable steering feel with respect to the vehicle.
Patent CA-2182271-A1 (CA)
Title: Solar energy generator
Inventor: SORENSEN WILFRED B
IPC: F24S90/00
Filed: 1995-01-30
Abstract: A system for coupling a plurality of solar powered bubble pumps (2) in series is described. By controlling the boiling temperature of the circulating fluid contained in the system, the flow of liquid between the units of the series can be balanced and the pressure differential between the first and last units can be used to convert heat energy into kinetic energy by use of an external turbine or electrical generator (13).
Patent CA-2182290-A1 (CA)
Title: Device and process for creating an image sequence
Inventor: RYBCZYNSKI ZBIGNIEW
IPC: H04N5/262
Filed: 1995-01-26
Abstract: The proposed device for creat-ing an image sequence with the aid of a photographic or video system com-prises a camera system for recording a primary image sequence, a transport system with a drive unit for the trans-lational movement of the camera sys-tem, and a control unit to control the transport system and adjust the angu-lar field and/or focal plane. The device also includes a rotating device for no-tating at least a first object in relation to the recording direction and a pro-cessor whose output is connected to a control input of the rotating device and to an unput of the control unit and/or to a control input of the camera system. The transport system is designed and controlled in such a way that it moves the camera system in only one prede-termined plane.
Patent CA-2187247-A1 (CA)
Inventor: BLOCK SIMON A
IPC: H04L69/40
Filed: 1996-10-07
Abstract: A method and a test instrument are provided for measuring program clock reference (PCR) jitter in a data stream, such as an MPEG-2 transport stream. The test instrument includes a line interface circuit for receiving the data stream, a digital computer for processing the data stream, a local clock for generating timestamps and a display unit. The digital computer extracts from the data stream a PCR sample which represents a count of a system time clock used to generate the data stream. The timestamp is obtained from the local clock and is associated with the PCR sample value. The digital computer determines a line of best fit to a set of values including the PCR sample value and the timestamp, and previously received PCR sample values and associated timestamps. The line of best fit represents a reconstructed system time clock. The digital computer determines a PCR jitter value for the PCR sample value by determining a distance between the line of best fit and the PCR sample value. The PCR jitter value may be displayed on the display unit, preferably in a histogram.
Patent CA-2207844-A1 (CA)
Inventor: TSUDA SOTARO
IPC: B41M3/06
Filed: 1997-06-17
Abstract: To obtain a woody plate material having an impression of high quality material easily and at a low cost by processing a surface of a woody material, such as a veneer, plywood or a plate material obtained by lumbering, to have a grain pattern and touch which closely resemble a desired natural wood.  When embossing a xylem surface pattern such as conduit pipes, and printing a grain pattern such as a cross grain, simultaneously on a surface of a plate-like woody material A1, an embossing roller 3 having a xylem surface pattern which matches a desired grain pattern projected on its surface is used for embossing a concave xylem surface pattern on a surface of the woody material A1 and, simultaneously, the embossed portion is supplied with ink by an ink feeding device, and then, a grain pattern which matches the xylem surface pattern embossed on the surface is printed by a printing roller 8 so as to obtain a woody plate material having a desired grain pattern.
Patent CA-2208997-A1 (CA)
Title: A method and apparatus for folding a deformable intraocular lens
Inventor: FEINGOLD VLADIMIR
IPC: A61F9/007
Filed: 1996-01-04
Abstract: An intraocular lens injection system and method of injecting an intraocular lens. The intraocular lens injection system includes an injecting device with a converging passageway (416), and grooves (410) for curling the ends of the deformable intraocular lens (64) into a folded position prior to insertion into the eye.
Patent CA-2213231-A1 (CA)
Inventor: COTTER ROBERT F
IPC: A61M1/02
Filed: 1996-02-12
Abstract: L'invention porte sur un accouplement et un système de collecte de sang comportant un premier et un deuxième récipient (10, 17) et un accouplement (11) reliant les récipients (10, 17). L'accouplement, conçu pour maintenir ensemble les récipients (éventuellement des sacs), et les bloquer dans deux positions différentes empêchant l'une et l'autre la contamination, et l'une d'elles laissant passer le sang entre les récipients.
Patent CA-2214805-A1 (CA)
Title: Process for biological control of calamagrostis canadensis using a low temperature basidiomycete
Inventor: MALLETT KENNETH I
IPC: A01N63/04
Filed: 1997-08-22
Abstract: The invention disclosed relates to a substantially biologically pure isolate of a low temperature basidiomycelte (LTB) fungus, (.ident.Coprinus psychromorbidus), to a delivery composition comprising the fungus and an agriculturally acceptable carrier capable of supporting growth of the fungus, and to a method for suppressing the growth of Calmagrostis canadensis and other related weed grasses which are hosts to LTB snow mould.