baber/WOPTO huggingface dataset:
Patent CA-2108684-C (CA)
Title: Image scanner
Inventor: KAJI YUKIO
IPC: G06V30/162
Filed: 1993-02-25
Granted: 1998-09-15
Abstract: A first aspect of the present invention provides a white level setting system for an image scanner. The system compares an analog image signal obtained by scanning an original or a white reference with a predetermined analog white level signal, to provide a digital image signal corresponding to an image on the original, calculates a white level for the next scan line according to the digital image signal, and employs the white level for the next scan line.  A second aspect of the present invention provides a binarization system for an image scanner.  The system divides read image data into predetermined unit blocks, finds rates of changes in gray levels in each of the blocks, detects edges of the image data according to the rates of changes, determines a slice level for each of the blocks according to the gray levels of the edges, and converts the image data of each of the blocks into binary data according to the slice level.
Patent CA-2112206-C (CA)
Inventor: SANTO ANTONIO FERREIRA DO ESPI
IPC: B60Q3/02
Filed: 1993-12-22
Granted: 2005-02-15
Abstract: The present invention relates to motor vehicle accessories and more particularly to an internal rearview mirror with courtesy lights which has a longer useful life and better performance than prior art devices. The rearview mirror of the present invention comprises: a mirror device (1) and an antiglare device (2) acting on the mirror device (1) in a housing (3); a courtesy light system (4) for the rearview mirror; an electronic control module (5) including a printed circuit board (70) and having a timing device (6) which controls a ceiling lamp, trunk lamp and door courtesy lights; and a detachable support (7) including a spring loaded neck (8) and a base (9) mounted centrally to the ceiling or windshield. The printed circuit board (70) has holes (72) and the housing (3) has fixing columns (71) aligned with the holes (72) for mounting the printed circuit board securely in the housing with screws. The electronic control module (5) has an electrical connector (173) including a prismatic shaped support block (76) on a lateral extension (74) of the printed circuit board (70) and connector pins (73) arrayed on the lateral extension (74) and electrically connected to the electrical conductor paths (75). Both support block (76) and the lateral extension (74) are aligned with a not centrally positioned opening (37) of the housing (3), in which a claw (77) is provided which engages in a groove (77') in the lateral extension (74) so as to assist in holding the printed circuit board (70) in position.
Patent CA-2122254-C (CA)
Title: The resolution of racemic verapamil
Inventor: EHRMANN OSKAR
IPC: C07C255/26
Filed: 1993-01-28
Granted: 2004-05-18
Abstract: The method proposed for separating racemates of verapamil is characterized in that the free base of the compound is reacted with optically active dibenzoyltartaric acid or ditoluoyltartaric acid in the molar ratio 1:1 to 1:2 in a mixture of methanol and water in the ratio 1:1 to 3:1 or in a mixture of acetone and water in the ratio 0.5:1 to 2:1, the diastereomeric mixture thus obtained is separated by crystallization, the diastereomers subsequently converted into their respective free bases and these optionally converted into their salts with physiologically tolerated acids.
Patent CA-2123227-C (CA)
Title: Method and composition for preserving antigens and process for utilizing cytological material produced by same
Inventor: RYAN WAYNE L
IPC: A01N1/00
Filed: 1993-09-09
Granted: 2009-04-28
Abstract: A method and composition for fixing and stabilizing tissues, cells, and cell components such that the antigenic sites are preserved for a useful period of time is provided. The fixative employs a formaldehyde donor that is non-toxic, non-flammable, and that stabilizes the cell with minimal damage to and alteration of the cell morphology. The cell antigenic sites are left intact so that studies with monoclonal antibodies may be conducted. Vaccines and related immunotherapeutic methods utilizing antigens stabilized by the fixative of the present invention are also provided. The invention also discloses a method for developing a posi-tive control for test reagents and for test instrumentation.
Patent CA-2124628-C (CA)
Title: Filter tow and method for its manufacture as well as tobacco smoke filter element and method for its manufacture
Inventor: TEUFEL EBERHARD
IPC: A24D3/10
Filed: 1994-05-30
Granted: 2003-08-05
Abstract: A filter tow of cellulose acetate filaments and/or cellulose acetate staple fibers, has at least the surface of the filaments and staple fibers consisting of a cellulose acetate having an acetyl number of less than 53%, preferably less than 49%. The method for the manufacture of the filter tow comprises the spinning of cellulose acetate filaments from a solution of cellulose acetate having an acetyl number of at least 53% in acetone, if necessary, cutting the filaments into staple fibers, and combining the filaments and/or staple fibers to a filter tow, the filaments or staple fibers being hydrolyzed so that at least the cellulose acetate at the surface of the filaments and staple fibers has an acetyl number of less than 53%, preferably less than 49%. The invention involves also a tobacco smoke filter element made from the filter tow, as well as a method for the manufacture of the tobacco smoke filter element. The new filter tow and the new tobacco smoke filter element are better biodegradable under action of environmental influences, yet their storage under conditions customary today is possible without the danger of microbiological degradation.
Patent CA-2125048-C (CA)
Title: Vibration and sound damping spacers for vehicle brakes and a method of making a web for manufacturing such spacers
Inventor: JOSEFSSON PERCY
IPC: F16D65/095
Filed: 1992-12-22
Granted: 1999-04-13
Abstract: A vehicle brake vibration-and-noise damping insert is comprised ot two thin plates (1, 2) and an intermediate damping layer (3). The damping layer (3) is comprised of a rubber layer (4) which has been vulcanized to the two metal plates (1, 2). The invention also relates to a method of producing a material web for the manufacture or this type of insert. A first sheet-metal strip is coated on one side thereof with a rubber layer, while one side of a second sheet-metal strip is coated with an adhesive. The two metal strips are passed through a band vulcanizing machine with the coated sides of the strips facing one another, so as to vulcanize the rubber layer to the two metal strips.
Patent CA-2125052-C (CA)
Inventor: MOJARADI MOHAMAD M
IPC: H01L27/092
Filed: 1994-06-03
Granted: 1998-09-01
Abstract: A semiconductor circuit integrated with CMOS circuits for receiving a TTL input voltage and generating a large negative and positive voltage swing with respect to p-type or n-type substrate is disclosed. This invention is based on elimination of the electro-static discharge (ESD) protection circuit which is a requirement for any integrated circuit. Eliminating the ESD protection circuit also eliminates the clamping feature of the ESD protection circuit and therefore the circuit can be driven to negative voltages for PMOS circuits and to positive voltages for NMOS circuits. This provides the possibility of connecting the drain of a a P-channel type metal oxide silicon field effect (PMOS) transistor, which is fabricated on a p-type substrate within an n-well, to a voltage below the the substrate voltage. Also, in a n-channel type metal oxide silicon field effect (NMOS) transistor which is fabricated on a n-type substrate within a P-well, the drain can be connected to voltages higher than the substrate voltage. Utilizing this feature of a MOS transistor provides a way to design an integrated circuit which can handle negative voltageswings as well as positive voltage swings.
Patent CA-2130773-C (CA)
Title: Closure device for controlling a door lock, in particular the door lock of an oven
Inventor: SAUVAGNAT RENE
IPC: F24C15/02
Filed: 1994-08-24
Granted: 2000-07-11
Abstract: The invention relates to a closure device for controlling a door lock, in particular the door lock of an oven, comprising a U-shaped grip (6) mounted on the locking side (11) of the door opposing the hinges of the door and rotatable about a vertical axis (9) relative to the door, the grip having a vertical grip arm (7) arranged at a distance from the rotational axis (9) of the grip (6), a magnet (22) being provided at the lower side of the grip arm, and a magnetic switch (18) fixed in the oven frame and connected electrically via a direct or indirect circuitry with the control members of the locking mechanism.   When the door is closed, the magnet (22) and the magnetic switch (18) are opposite one another.
Patent CA-2131575-C (CA)
Title: Agent for treating metal ions in an aqueous solution, process for producing the metal ion-treating agent and method for treating metal ions in an aqueous solution
Inventor: HATA KEISHIRO
IPC: C22B43/00
Filed: 1994-09-07
Granted: 2004-08-24
Abstract: An agent for treating metal ions in an aqueous solution, comprising a solid porous carrier and, supported thereon, an organic reagent (hereinafter referred to as a "redox reagent") which is capable of converting metal ions (inclusive of metal complex ions) contained in an aqueous solution to zero valent metal or monovalent metal ions by a redox reaction and which is capable of carrying out oxidation-reduction reversibly.
Patent CA-2134761-C (CA)
Title: Synthetic peptide vaccines for dental caries
Inventor: TAUBMAN MARTIN A
IPC: C07K16/00
Filed: 1993-04-30
Granted: 2005-03-22
Abstract: Immunization of animals with a composition containing either an amino acid sequence from the catalytic domain of gluco-syltransferase, an amino acid sequence from the glucan-binding region of glucosyltransferase or an amino acid sequence from the native surface domain of glucosyltransferase provoke antibody and T-cell immune responses to this enzyme. Since this enzyme has been implicated in the colonization of mutans streptococci on tooth surfaces, such immune responses are important for the prevention of dental caries. Multicomponent and multivalent compositions which include these amino acid sequences provide effective vaccine capabilities.
Patent CA-2138778-C (CA)
Title: Fusobacterium necrophorum leukotoxoid vaccine
Inventor: NAGARAJA TIRUVOOR G
IPC: C07K14/195
Filed: 1993-06-22
Granted: 2003-03-11
Abstract: A method is provided for the enhanced elaboration of leukotoxin from F.  necrophorum, and subsequent production of an inactivated leukotoxoid ruminant animal vaccine against F. necrophorum infection and consequent liver abscesses and/or foot rot in such animals. The method involves forming a culture of F. necrophorum bacteria in growth media, allowing the bacteria to grow therein and to simultaneously elaborate leukotoxin in a supernate; the culturing is preferably carried out at a temperature of from about 35-41 °C, a pH of from about 6.5-8, and for a period of from about 4-9 hours. At the end of the culturing, bacterial growth and leukotoxin elaboration are terminated, preferably by separating the leukotoxin supernate, whereupon the vaccine is produced by inactivation of at least the supernate.
Patent CA-2141039-C (CA)
Inventor: TAYLOR ANTHONY JAMES
IPC: A61K9/12
Filed: 1993-07-30
Granted: 2006-04-25
Abstract: This invention relates to novel aerosol formulations for administering drugs, in particular for administration of a beclomethasone ester by inhalation.       In particular the invention provides novel aerosol formulations consisting essentially of (a) beclomethasone dipropionate in the form of a solvate with 1,1,1,2-tetrafluoroethane (CF3CH2F) and one or more fluorocarbon or hydrogen-containing chlorofluorocarbon propellants or (b) anhydrous beclomethasone dipropionate and 1,1,1,2,3,3,3-heptafluoro-n-propane as propellant.
Patent CA-2146946-C (CA)
Title: Cell culture substrates and methods of use
Inventor: SWIDEREK MARK S
IPC: C08H1/06
Filed: 1995-04-12
Granted: 1998-12-29
Abstract: Cell culture substrates comprising dried films of native fibrillar collagen produced by a method in which collagen fibers are hydrolyzed in acid, solubilized, and reformed as gels on porous surfaces under non-physiologic salt conditions to produce large fibers with the striations characteristic of collagen fibers found in vivo. The gels are collapsed onto the porous surfaces by drawing the interfibril fluid out of the gel through the underside of the porous surface and then dried to form films. Dried collagen films made in this manner retain native fibrillar collagen structure and excellent diffusion characteristics. Native fibrillar collagen films produced according to the methods of the invention are useful as cell culture substrates. They have particularly advantageous properties for growth and differentiation of epithelial cells. This effect is synergistically enhanced by addition of butyric acid as a differentiation inducing agent.
Patent CA-2148019-C (CA)
Title: Pre-heater for liquid-cooled internal combustion engine
Inventor: WOYTOWICH WALTER J
IPC: F02N19/02
Filed: 1995-04-27
Granted: 1998-02-17
Abstract: An engine heater is provided for installation in a liquid-cooled internal combustion engine.   The heater includes an electrical resistance heater element and a pump driven by an electric motor to circulate heated fluid through the engine.          A thermostatically-controlled switch in thermal contact with the housing may be provided, to shut the device off when the temperature of the device exceeds a predetermined level.   The heater may comprise dual resistors housed within a helical sheath that surrounds a direct-current ("DC") pump motor housed within a watertight pump casing.  The motor drives an impeller positioned externally to the motor casing.  An array of anti-swirl  vanes  are  positioned  within  the  housing  extending outwardly from the motor casing adjacent to and downstream of the impeller to guide the flow of fluid and prevent it from rotating with the impeller.
Patent CA-2148660-C (CA)
Inventor: PINSCHMIDT ROBERT KRANTZ JR
IPC: C08F226/02
Filed: 1995-05-04
Granted: 1998-07-21
Abstract: Amine functional polymers are prepared by polymerization of vinylamides with vinyl ester monomers. The resultant polymers are hydrolyzed under acid conditions and subsequently at least partially basified to the free-base amine. Byproduct salts are removed by precipitation or by extraction into an immiscible phase. The polymers made by this method are crosslinkable through reaction of the amine groups and are useful in high performance coatings, adhesives, binders and the like.
Patent CA-2150296-C (CA)
Inventor: CHOPIN THIERRY
IPC: B01J23/10
Filed: 1995-05-26
Granted: 2000-04-25
Abstract: A cpd. comprising alumina, cerium and zirconium oxides, which shows a stabilised capacity for the absorption of hydrogen up to a temp. of at least 1000 degrees C. Also claimed is the method of prepn. of the prod., the precursor of the acid prod. and its use as a catalyst.
Patent CA-2150538-C (CA)
Title: Portable room air purifier
Inventor: DAVIS GEORGE B
IPC: F24F1/0328
Filed: 1993-12-07
Granted: 2003-12-30
Abstract: A portable and compact room air purifier having an internal filter element (30) through which air is drawn by a centrifugal fan (32) and wherein the air is discharged generally uniformly and radially by passing between at least one generally arcuate scroll (41, 42) and a surrounding deflector (40). The purifier is automatically deactivated in the event of destruction or removal of the filter housing (11).
Patent CA-2153142-C (CA)
Title: Slick line casing and tubing joint locator apparatus and associated methods
Inventor: KILGORE MARION DEWEY
IPC: E21B47/09
Filed: 1995-06-30
Granted: 2006-08-22
Abstract: A detector structure is used to sense and log the joints in a downhole jointed tubular structure, such as a well bore casing or production tubing, in a subterranean well. The detector is moved through the jointed tubular structure on an elongated positioning member, representatively a slick line, through a series of joints to be logged. As the detector passes through each joint it electromagnetically senses the joint and responsively generates an electric output signal. The output signal is used to momentarily cause a drag structure portion of the detector, in cooperation with the interior side surface of the tubular structure, to momentarily create a detectable tension change in the elongated positioning member. Alternatively, a pyrotechnic or compressed gas device may be used to create the detectable changes in response to the generation of the electrical output signals. These tension changes, which may be either tension increases or tension decreases, serve as mechanical output signals transmitted upwardly through the positioning member, and may be plotted on a strip chart recorder at the surface to record the joint locations and correlate them to the lowered depth odometer readings of the detection system. Using this joint detection apparatus, correlative joint logging procedures may be carried out for tool setting purposes without the necessity of utilizing an electrical conductor line.
Patent CA-2159585-C (CA)
Inventor: THOMPSON HUGH ANSLEY
IPC: A61F13/539
Filed: 1994-03-23
Granted: 1999-03-16
Abstract: Article absorbant comportant une feuille supérieure perméable, une feuille de fond imperméable liée à la feuille supérieure et une feuille intermédiaire placée entre la feuille supérieure et la feuille de fond. La feuille supérieure comprend un voile tridimentionnel, souple et perméable à expansion macroscopique (10) fait d'un premier polymère (50) à point de fusion donné et d'un second polymère (52) lié au premier polymère pour former un stratifié, et ayant un point de fusion inférieur à celui du premier polymère. Le voile présente deux surfaces (41, 43) séparées par une distance supérieure à l'épaisseur du stratifié. Le voile comporte une multiplicité de fibres capillaires (40) s'étendant entre les deux surfaces. Les fibres capillaires se caractérisent par une multiplicité de parois (55) latérales interconnectées entre elles entre les deux surfaces et aboutissant à la deuxième surface de telle façon que lorsqu'on chauffe le voile à une température comprise entre le premier et le second point de fusion, le second polymère de la paroi latérale adhère thermiquement à la couche intermédiaire (61, 201, 305) le long de la seconde surface du voile.
Patent CA-2159778-C (CA)
Inventor: HERMANN KLAUS DIETER
IPC: B65C11/02
Filed: 1995-10-03
Granted: 2003-06-10
Abstract: The invention concerns an apparatus for the printing and/or dispensing of labels having a transport device for a label tape which is guided from a supply roller around a deflection edge for separating the label from its carrier band to a transport wheel at which a driver, driven in a stepwise fashion by a hand lever, engages. In accordance with the invention a connecting means (29)  is pivotably mounted about the axis (24) of the transport wheel (7) which exhibits, on its periphery, resilient catches (42) which, in the drive direction of the transport wheel (7), interlockingly engage in corresponding recesses ( 43) of the transport wheel (7) only in the rotational direction and, on the connecting means (29), at least one pin (28) projecting outwardly and parallel to the pivot axis is provided for whose radial separation from the axis (37) of the transport wheel (7) is smaller than the radius of the transport wheel (7) and which cooperates with the driver (27) driven by the hand lever (4).
Patent CA-2164922-C (CA)
Title: Conically-shaped fusion cage and method of implantation
Inventor: PAVLOV PAUL W
IPC: A61F2/30
Filed: 1995-12-11
Granted: 2006-05-23
Abstract: A fusion cage for vertebral body fusion is conically-shaped. A thread is formed as part of the external conical surface of the fusion cage. Apertures are defined through the fusion cage in order to provide for contact between the engaged vertebral bone structures and bone growth inducing substances packed within the fusion cage. The fusion cage is introduced and maintains or increases the lordosis between adjacent vertebral bone structures.
Patent CA-2165589-C (CA)
Title: Composite forming fabric
Inventor: BARRETT REX
IPC: D21F1/00
Filed: 1995-12-19
Granted: 2005-04-12
Abstract: A composite forming fabric, formed from two separate interconnected woven layers, for use in a paper making machine. The machine side layer is a single layer N by 2N weave, such as a six-shed, 6 × 12 weave. Within the weave repeat pattern the warp yarns form two distinct floats of unequal length, and the weft yarns form floats of equal or unequal length. The weft floats are located substantially in a single plane, on the machine side of the composite fabric. The weave design provides the composite fabric machine side layer with improved wear potential and guiding properties, without adversely affecting its drainage properties. The paper side fabric layer may be of any woven construction; a plain weave or 2/1 twill is preferred.
Patent CA-2169937-C (CA)
Title: Air cleaner construction
Inventor: GILLINGHAM GARY R
IPC: B01D50/00
Filed: 1994-09-12
Granted: 2005-09-20
Abstract: An air cleaner construction including a precleaner arrangement, a filter assembly and a scavenger arrangement is provided. In the precleaner arrangement, air directed into the air cleaner assembly is subjected to some particulate removal. The air from the precleaner arrangement is then directed into the filter assembly, for further particulate material. The scavenger arrangement is constructed and arranged to scavenge separated particulate material from both the precleaner arrangement and the filter assembly. A pulse jet cleaner assembly is provided to facilitate removal of particulate material from the filter assembly.
Patent CA-2171411-C (CA)
Inventor: KLAAS DE GROOT ANNE
IPC: F16L1/23
Filed: 1996-03-08
Granted: 2008-05-20
Abstract: The invention relates to a method for laying a pipeline on a surface located under water, wherein the pipeline is held fixedly by means of tensioning means which comprise a plurality of tensioning elements each extending between at least one clamping member engaging on the pipeline and at least one support member connected to a vessel. In the known method the tensioning means consist of a plurality of sets of endless clamping bands which apply a braking action to the pipeline. Such a method is not practically suitable for laying a heavy pipeline on for instance a deep sea-bed. The invention has for its object, to provide a method which is practically suitable for this purpose in that at least one first set of clamping jaws is clamped fixedly to the pipeline and then move along with the pipeline from a starting position to a releasing position, while this first set of clamping jaws is held fixedly by means of easing holding means while at least one other set of clamping jaws is released from the pipeline and returned to a starting position.
Patent CA-2173100-C (CA)
Title: Device for isolating nucleic acids
Inventor: WALTER THOMAS
IPC: B01L3/00
Filed: 1996-03-29
Granted: 2008-10-07
Abstract: Device for the isolation of nucleic acids from a liquid sample by introducing the liquid into the device through an inlet opening and passage of the sample through a nucleic acid binding material and discharging of the resulting liquid through an outlet opening, wherein the nucleic acid binding material is inserted through the outlet opening during the manufacture of the device and the outlet opening is narrowed in order to hold the material. The device is particularly simple and reliable to manufacture but yet ensures that nucleic acids can be isolated without contamination.