baber/WOPTO huggingface dataset:
Patent CA-2165471-C (CA)
Inventor: BUCHANAN D SCOTT
IPC: A61B5/05
Filed: 1994-06-21
Granted: 2005-01-25
Abstract: A biomagnetometer includes a magnetic field sensor including a magnetic field pickup coil (210) and a detector (211) of small electrical currents flowing within the pickup coil. A vacuum-tight enclosure (212) surrounds the sensor. The enclosure has a concavely upwardly curved first wall, with the magnetic field pickup coil located adjacent to the first wall. A vented reservoir (220) of liquefied gas is located within the enclosure, and a solid thermal conductor (218) extends from the sensor. There is a vacuum-tight thermal feedthrough by which the solid thermal conductor passes between the interior and the exterior of the enclosure. Electronic circuitry for filtering and amplifying the signals of the detector is also provided. Such a biomagnetometer is placed below the body of a reclining subject, and a second portion of the biomagnetometer can be placed above the body. In one form, the enclosures are shaped to form a cavity that receives the head of the subject therein, to achieve full head coverage of the pickup coils in the biomagnetometer.
Patent CA-2170067-C (CA)
Inventor: MARKOVITZ MARK
IPC: C08J5/24
Filed: 1996-02-22
Granted: 2007-06-12
Abstract: A resin composition is provided that is suitable for impregnating sheet material, including fabrics, films, paper and tapes of the type employed to form prepregs, such as tapes used to form electrical insulation layers on electrical components. The resin composition includes a solid or semi-solid epoxy resin having an epoxide functionality of at least 2.5, a metal acetylacetonate for catalyzing the epoxy resin, and an accelerator of bisphenol A-formaldehyde novolac catalyzed by an acidic catalyst and having a hydroxyl equivalent weight of 120. The resin composition is essentially unreactive at room temperature and at elevated temperatures sufficient to enable permeation of the sheet material by the resin in its manufacture, is essentially unreactive at temperatures required to remove moisture and volatiles during processing of articles wrapped or taped with the sheet material, and cures at a higher temperature without adversely affecting the cure characteristics of the resin composition. The resin composition of this invention achieves the desirable reactivity characteristics noted above, while exhibiting enhanced mechanical, thermal and electrical properties necessary for its use within an electrical insulation composite.
Patent CA-2171004-C (CA)
Title: Foamed drilling fluids, their process for preparation and the corresponding drilling method
Inventor: WILLIAMSON DON
IPC: C09K8/38
Filed: 1995-08-04
Granted: 2009-09-08
Abstract: The present invention is directed to an aqueous foamed drilling fluid for drilling well bores into a subterranean formation, comprising water, at least one clay and at least one foaming agent. According to the invention, it further comprises at least one metal hydroxide. The invention further relates to a method for preparing said foamed drilling fluid.
Patent CA-2171015-C (CA)
Inventor: SMOLINSKE JEFFREY C
IPC: H04L1/18
Filed: 1995-05-26
Granted: 2000-09-19
Abstract: The method reduces transmission delay by using a selective-repeat automatic repeat request (104), ARQ, error detection scheme in a packet-switched data communication system. The invention provides a method for a subscriber unit to transmit acknewledgment information using a contention-free channel access scheme in addition to providing for a base control unit to interrupt a packet currently being transmitted in order to retransmit segments of the packet when the segments have errors (108).
Patent CA-2175239-C (CA)
Title: Mechanical partial neutralization of hydrogen bonds for production of a softer and more silky air-laid fibrous product
Inventor: KROYER KARL KRISTIAN KOBS
IPC: D04H1/64
Filed: 1994-10-28
Granted: 1999-02-23
Abstract: A method is provided for producing a soft and silky air-laid fibrous product. After the forming of a product a two-directional stretching is affected thereby establishing a fine mosaic pattern of invisible lines. In said lines the covalent bonds are maintained whereas the hydrogene bonds are neutralized. Hereby a very soft and silky product is obtained having a good hand and feel.
Patent CA-2178119-C (CA)
Title: Automatic needle guard tip protector
Inventor: SIRCOM RICHARD C
IPC: A61M25/00
Filed: 1996-06-04
Granted: 2007-02-13
Abstract: A needle tip protecting device is provided for hypodermic needles, catheters and the like. The device is small enough to be stored at the base of the needle prior to and during use. After use it may be slid to cover the needle tip where it automatically self-attaches and becomes non-removable. Embodiments of mechanisms which achieve this effect by means of a tapered cavity, collet or angled jamming surface are described.
Patent CA-2181281-C (CA)
Title: Structure and fabrication process for an aluminum alloy junction self-aligned back contact silicon solar cell
Inventor: MEIER DANIEL L
IPC: H01L31/068
Filed: 1996-07-16
Granted: 2005-05-10
Abstract: An improved solar cell design and method of fabrication that primarily uses two materials, n-type doped silicon and aluminum to form a p-n alloy junction back contact solar cell. The aluminum alloy junctions are placed on the back (unilluminated) side of the cell, thereby combining the desirable features of aluminum (as a dopant, contact metal and light reflector), with the advantages of a back contact cell. The cell design and method of fabrication includes such features as surface texturing, front and back surface field minority carrier mirrors, surface passivation using oxidation layers, use of A1 contacts as light reflectors, intrinsic protection against reverse bias due to contiguous n' and p' regions, and an improved bus bar contact design suitable for interconnecting cells using a surface mount technology. An improved method of ohmic contact formation uses a self-alignment technique for forming the ohmic contacts.
Patent CA-2181297-C (CA)
Title: Ballast broom with auger and method
Inventor: HOLLEY JOHN D
IPC: E01B27/04
Filed: 1996-07-16
Granted: 2004-04-20
Abstract: A railroad ballast broom vehicle uses a double or split auger to move ballast received from a rotary core broom. The auger has various features to minimize the risk of it jamming on ballast which it moves to the field side of rails of the railroad bed which is being swept. Flex plates are used to mount broom drive hydraulic motors to minimize or avoid problems which might otherwise be caused by slight misalignments in the motors and the rotary core of the broom. A dust control system is used to minimize escape of dust from operation of the vehicle. A method of using the vehicle advantageously uses only a single pass of the vehicle over a given section of road bed in need of sweeping.
Patent CA-2181614-C (CA)
Title: Filter cartridge with drainable sludge barrier
Inventor: FELBER RICHARD A
IPC: B01D29/23
Filed: 1996-07-19
Granted: 2001-04-10
Abstract: This invention relates generally to filters for removing impurities from liquids, and more particularly to a replaceable filter cartridge having a barrier for preventing contaminants from draining from a spent cartridge, as it is being replaced. The barrier comprises a layer of filter media closely surrounding an inner perforated conducting conduit.
Patent CA-2184104-C (CA)
Inventor: KODAMA HIROKI
IPC: C07D303/08
Filed: 1996-08-23
Granted: 2000-08-29
Abstract: A process for producing optically active 2-halo-1-(substituted phenyl)ethanol of a formula (Ia) or optically active styrene oxide of a formula (Ib).  The process comprises the steps of reacting a compound of a formula (II) with phthalic anhydride to give a compound of a formula (III), performing optical resolution on the resulting compound using an optically active organic amine as a resolving agent, and finally performing hydrolysis or alcoholysis on the optically resolved compound (Ia) or (Ib). The scheme of the above process is:                                   (II) (III)      or      (Ia) (Ib) wherein X represents a halogen atom, Y represents a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C1-C6 alkoxy group, a C1-C6 haloalkyl group or a C1-C6 haloalkoxy group, Z represents a hydrogen atom, a halogen atom or a C1-C6 alkyl group, n is 0 or an integer of 1 to 3 and m is 0 or an integer of 1 to 2. The resulting optically active compounds are useful as an intermediate for medicines.
Patent CA-2185800-C (CA)
Title: Pipeline processing of still images adapted for real time execution of digital video effects
Inventor: DER HARRY
IPC: G06F3/048
Filed: 1995-03-20
Granted: 2004-08-24
Abstract: Two channels (A, B) or output of sequences of digital still images are input to a DVE system which has pipelined memory circuits (80, 82, 84) rather than frame buffers. The DVE system includes a DVE unit (52) which performs arbitrary three-dimensional, digital video effects on the two channels of input to provide a composite output sequence (C). The DVE system thus operat es on sequences of digital still images rather than video signals. The DVE syst em is also adapted to prevent output upon receipt of a control signal (S1), whi ch may indicate that an output pipeline is full. The DVE system also provides a control signal (S2) to prevent input when it cannot receive input or it is n ot providing output.
Patent CA-2190601-C (CA)
Title: Refining element
Inventor: FROBERG PER
IPC: B02C7/12
Filed: 1995-06-12
Granted: 2004-08-10
Abstract: A pair of co-operating refining elements (10,11) intended for a disc refiner with two opposed refining discs, one of which is stationary (stator) and the other one is rotary (rotor), for the working of lignocellulosic fiber material in a refining gap (12) between the co-operating refining elements (10, 11). The refining elements are provided with a pattern of bars (13-16) and intermediate grooves. Each bar is formed with a plurality of high bar portions (13,15) and intermediate low bar portions (14,16), counted in radial direction. High bar portions (13,15) are located directly in front of low bar portions (14,16) on opposed co-operating refining elements (10,11). The length of the high bar portions (15) on refining elements (11) of the rotor exceeds the length of the high bar portions (13) on refining elements (10) of the stator.
Patent CA-2193243-C (CA)
Inventor: CAILLAUD FREDERIC
IPC: B22D11/06
Filed: 1995-06-23
Granted: 2005-08-16
Abstract: A side wall for a continuous casting machine for sheet metal consisting of a frame with two counter-rotating rollers (2) mounted thereon, two side walls (10) arranged at each end of the rollers (2), and a device for pressing the side walls against the roller ends. The rollers and the side walls together define a continuous casting mould containing an amount of liquid metal. The side wall includes a plate (12) made of a non-metal refractory material for engaging the roller ends, and a metal portion (14) for attaching the side wall to the frame of the continuous casting machine. Said metal portion consists of a rim enclosing only the edges of the plate (12) of refractory material.
Patent CA-2200825-C (CA)
Title: Moisture separator for digester gases and landfill gases and raw natural gases
Inventor: HLYNSKY JULIAN S
IPC: B04C5/103
Filed: 1997-03-24
Granted: 2004-07-13
Abstract: Two versions of centrifugal type separators capable of removing moisture from digester gases, landfill gases and raw natural gases are described. An upright housing has a cylindrical upper region (of a circular cross-section) and a conical lower region which tapers downwardly. A tangential inlet is located in an upper region of the housing. A gas outlet is located centrally in a top end of the housing. An outlet to remove separated liquid is provided at the bottom of the housing. There is a trap system that preferably includes a liquid holding tank for providing a positive water seal in order to prevent explosive gases from escaping through the liquid outlet. One version of separator is suitable for a high pressure gas stream, ie. 3.0 psig or higher, while the second version is suitable for lower pressure gas streams, i.e. from 6 inches to 30 inches of water.
Patent CA-2200924-C (CA)
Inventor: SELFRIDGE PETER GILMAN
IPC: G06F17/30
Filed: 1997-03-25
Granted: 2001-02-13
Abstract: A data exploration tool which has a graphical user interface that employs directed graphs to provide histories of the data exploration operations. Nodes in the directed graphs represent operations on data; the edges represent relationships between the operations. One type of the directed graphs is the derivation graph, in which the root of the graph is a node representing a data set and an edge leading from a first node to a second node indicates that the operation represented by the second node is performed on the result of the operation represented by the first node. Operations include query, segmentation, aggregation, and data view operations. A user may edit the derivation graph and may select a node for execution. When that is done, all of the operations represented by the nodes between the root node and the selected node are performed as indicated in the graph. The operations are performed using techniques of lazy evaluation and encachement of results with the nodes. Anothertype of the directed graphs is the subsumption graph, in which an edge leading from a first node to a second node indicates that the second node stands in a subsumption relationship to the first node. If a result of the operation represented by the first node has been computed, the result is available to calculate the result of the operation represented by the second node.
Patent CA-2203318-C (CA)
Title: Optical equalizer and optical amplifier and wavelength multiple optical transmission apparatus using optical equalizer
Inventor: SHIBUYA TAKASHI
IPC: H04B10/294
Filed: 1997-04-22
Granted: 2000-12-12
Abstract: There are provided a plurality of etalon filters arranged in concatenation, a light output portion for outputting a light to the etalon filters, and a light input portion to which a light transmitting the etalon filters is inputted, and the plurality of etalon filters have mutually different free spectrum regions.  A plurality of etalon plates applied with semipermeable films to both surfaces of a thin glass plate and having mutually different periods and amplitudes are cascade-connected.  By combining a plurality of etalon films having different characteristics with one another, it is possible to realize an optical equalizer having low loss polarized light dependency and capable of compensating optional gain wavelength dependency.  By using such an optical equalizer as a repeater by combining the optical equalizer with an optical amplifier, a level difference caused by the difference of the gain among wavelengths of optical signals is neither produced in a wavelength multiple optical transmission apparatus.        It is possible to realize an optical equalizer for compensating gain wavelength dependency of an optical fiber amplifier, which compensates for optional gain wavelength dependency and has low loss polarized light dependency.
Patent CA-2203726-C (CA)
Title: Silanized silica
Inventor: HARTMANN WERNER
IPC: C09D7/45
Filed: 1997-04-25
Granted: 2001-08-07
Abstract: The present invention provides a silanized pyrogenically-produced silica with the following physico-chemical properties:      Specific surface area                 m2/g   80 - 400 Primary particle size                 nm      7 - 40 Tamped density                        g/l    50 - 300 pH value                                      3 - 10 Carbon content         %    0.1 - 15 DBP number                             %     < 200.     The invention also provides a method of producing the above silanized pyrogenically-produced silica, comprising spraying pyrogenically-produced silica in a mixing container under intensive mixing, first with water or dilute acid and then with hexamethyldisilazane, mixing for 15 to 30 minutes, and tempering at a temperature of 100 to 400°C for a period of 1 to 6 h.
Patent CA-2203913-C (CA)
Title: Systeme de refroidissement pour generateur contenu dans une cuve entouree d'eau en ecoulement
Inventor: SCHEIDL WALTER
IPC: H02K9/18
Filed: 1995-10-24
Granted: 2004-12-21
Abstract: L'invention concerne un système de refroidissement pour un générateur (2) entraîné par une turbine et contenu dans une cuve (1) entourée d'eau en écoulement (12), ainsi qu'un générateur à turbines bulbes (2) pourvu d'un système de refroidissement (3) et d'un refroidissement du générateur d'entraînement. L'objet de l'invention est de créer un nouveau système de refroidissement, notamment un nouveau générateur refroidi (2) à turbines bulbes. Le nouveau système de refroidissement doit être simple et affecter le moins possible la construction mécanique de support de la cuve (1). Il doit comprendre un appareillage simple et être universellement utilisable. A cet effet, un générateur (2) à turbines bulbes est monté dans la cuve (1) avec un échangeur de chaleur air/liquide (3) dont le côté liquide est relié par des conduits (6) qui mènent en circuit fermé à au moins un échangeur de chaleur liquide/liquide (13) en communication thermoconductrice avec l'eau en écoulement (12) à l'extérieur de la cuve (1).
Patent CA-2206977-C (CA)
Inventor: BETSCHON LUZIUS
IPC: B41J2/175
Filed: 1997-06-04
Granted: 2005-11-22
Abstract: Plastic Foils are sealed in a heating press onto the two the large surfaces of a plastic foam plate, and subsequently a multitude of foam bodies is simultaneously punched from the plate with a multiple stamping knife. The process makes possible rational manufacture of laminated foam bodies, which can easily inserted in an ink cartridge of an ink jet printer.
Patent CA-2208358-C (CA)
Inventor: VAN HINE NEAL
IPC: B65D71/40
Filed: 1996-07-02
Granted: 2007-09-11
Abstract: A package containing food tubs (T) having connecting flanges (F). The flanges are angled at the comers so that an opening (14) is formed between the flanges of four adjacent tubs. A carrier (16) includes slots (32) in side panels through which adjacent tub flanges extend and a finger hole (30) in the top panel overlying the opening (14) between the flanges. This enables the package to be lifted from beneath the flanges adjacent the finger hole.
Patent CA-2212803-C (CA)
Inventor: STETSKO GREGG
IPC: A61K9/50
Filed: 1996-02-09
Granted: 2003-10-07
Abstract: A pharmaceutical film matrix comprising nanoparticles of a low solubility drug associated with a steric stabilizer and a film dispersing agent is coated on the surface of carrier particles and overcoated with a protective layer.  Pharmaceutical compositions comprising the film matrix-coated carrier exhibit excellent bioavailability, are useful in methods of treating mammals and are extremely stable in that they are capable of being redispersed without extensive agglomeration into larger particles after being stored.
Patent CA-2213194-C (CA)
Inventor: O'HARA KEVIN D
IPC: F04B1/14
Filed: 1996-03-20
Granted: 2004-07-13
Abstract: A reciprocating piston pump (10) provides pulseless delivery of liquid. It is suitable for use in compact environments or for the delivery of small amounts of liquid. The pump includes two pistons (18, 48) with pumping chambers that are alternately connected to inflow and outflow lines through a control valve (100). The control valve moves between a first position in which inflow is directed to the first piston chamber and outflow to the second piston chamber, and a second position in which outflow is directed to the first piston chamber and inflow is directed to the second piston chamber. A rotating cam (80) moves the pistons of the pump and the control valve between their operating positions described above. The cam rotates around an axis that is parallel to the axis of movement of the piston pumps. A control surface is carried by and rotated by the cam in one embodiment.
Patent CA-2214155-C (CA)
Inventor: FITZGERALD WILLIAM PATRICK
IPC: G01N33/28
Filed: 1997-09-09
Granted: 2003-04-29
Abstract: This invention relates to a method for rapidly determining weight and volume percent true boiling point curves for crude oils and fractions thereof. The method involves at least a partial separation of the crude oil or fraction into constituent chemical components, obtaining mass spectra of the chemical components, correlating retention time windows with boiling points for standard hydrocarbon mixtures, and converting the total ion current obtained from the mass spectra for selected components to weight and volume percent true boiling points by comparison with data obtained from a standard crude oil or fraction thereof.
Patent CA-2215529-C (CA)
Title: Carbohydrate-based vaccine and diagnostic reagent for trichinosis
Inventor: WISNEWSKI NANCY
IPC: G01N33/53
Filed: 1996-03-28
Granted: 2010-11-16
Abstract: The present invention relates to Trichinella vaccines that include a .beta.-tyvelose-containing composition and to the use of such vaccines to protect animals from Trichinella infections, and particularly from trichinosis caused by Trichinella spiralis infection. Such vaccines can also be used to produce antibodies that are capable of protecting an animal from Trichinella infections and of diagnosing such infections.  The present invention also relates to Trichinella diagnostic reagents that include a .beta.-tyvelose-containing composition and use of such reagents to detect Trichinella, and particularly Trichinella spiralis infections. The present invention also includes diagnostic kits based on such reagents and therapeutic agents based on the knowledge that .beta.-tyvelose is produced by Trichinella spiralis parasites.
Patent CA-2215857-C (CA)
Title: Method and apparatus for discriminating and counting documents
Inventor: RATERMAN DONALD E
IPC: G07D7/00
Filed: 1995-03-08
Granted: 2000-05-02
Abstract: A currency counting and discrimination device for receiving a stack of currency bills, rapidly counting and discriminating the bills in the stack, and then re- stacking the bills. The device comprises an input receptacle for receiving a stack of currency bills to be discriminated, a discriminating unit for discriminating the denomination of the currency bills, and one or more output receptacles for receiving the currency bills after being discriminated by the discriminating unit. The device further comprises a transport mechanism for transporting the currency bills, one at a time, from the input receptacle past a sensor of the discriminating unit and to the one or more output receptacles. One or more counters keep track of the value of bills that are discriminated. Furthermore, means are provided for an operator of the device to indicate the value of any bills whose denomination are not determined by the discriminating unit; the bills whose denomination are not determined by the discriminating unit being termed no call bills. The value indicating means appropriately effects the one or more counters.
Patent CA-2216038-C (CA)
Title: Catheter beveling and die cut process
Inventor: BROWN RONALD C
IPC: A61M25/00
Filed: 1997-09-17
Granted: 2005-11-15
Abstract: A process for forming the tips on catheters is described in which the catheter is placed on a mandrel and molded in a mold. The mandrel may then be removed and a second mandrel inserted. The second mandrel having a larger diameter and adapted to contact inner surface of the mold to thereby cut any flash formed at the end of the catheter and separate the flash from the catheter tip.     Alternatively, the mandrel and catheter are inserted into the mold to mold the outer surface of the catheter thereafter removed and inserted into a die to punch the flash from the tip of the catheter material. The punch process may be carried out by either the same mandrel or a second mandrel adapted to the purpose of cutting or punching the flash from the catheter.