baber/WOPTO huggingface dataset:
Patent CA-2216077-C (CA)
Title: Scene change detector for digital video
Inventor: CHEN XUEMIN
IPC: H04N7/32
Filed: 1997-09-19
Granted: 2005-10-25
Abstract: In a method for detecting a scene change between a prior video picture and a current video picture of a sequence of pictures, an average luminance value is determined for a block pair of the prior and current video pictures. Preferably, the blocks of the block pair are located, respectively, in the same relative position in the prior and current pictures. An incremental visual sensation value is determined using a difference between the average luminance values. If the incremental visual sensation value exceeds a block contrast threshold level, a scene change is indicated. In particular, if the minimum of the average luminance values of the current and prior picture blocks exceeds a dark scene threshold, the incremental visual sensation value is determined using the ratio of (a) the absolute value of the difference between the average luminance values, and (b) the minimum of the average luminance values of the current and prior picture blocks. Otherwise, the incremental visual sensation value is determined using the ratio of (a) the absolute value of the difference, and (b) the dark scene threshold. The method may be optimized by adjusting the block size based on the relative amount of motion and the current picture type.
Patent CA-2218185-C (CA)
Inventor: GREGERSON BARRY
IPC: H01L21/673
Filed: 1995-10-13
Granted: 2005-12-27
Abstract: A vacuum actuated mechanical latch (34) which is attachable to a hermetically sealable container (10) is described. The latch (34) is attached, formed, or otherwise integral with the door (12) of the container (10). The latch (34) is easily engaged and disengaged by processing equipment (14). Also, the latch (34) is designed to minimize the amount of abraded particulate and further isolates any particulate generated. Further, when the door (12) is latched to the container (10), the latch (34) is not easily overcome by jarring or bumping. The lead-in surface (88) of the latch (34) is angled to minimize friction when the latch (34) is forced into a first locking position.
Patent CA-2223650-C (CA)
Title: Catalyseur d'hydroconversion ni-cu sur support
Inventor: DAVIS STEPHEN M
IPC: C10G45/60
Filed: 1996-07-05
Granted: 2006-05-16
Abstract: Catalyseurs nickel-cuivre sur support acide, contenant de préférence un liant, utilisés pour l'hydro-isomérisation de paraffines, particulièrement de paraffines de Fischer-Tropsch, bouillant à 350  DEG F+, en vue d'obtenir des produits plus légers, ayant plus de valeur. Le procédé d'hydro-isomérisation consiste à introduire la charge contenant la paraffine (39) dans une colonne de fractionnement (40), où elle est séparée en une fraction légère 350  DEG F- et une fraction lourde 350  DEG F+. La fraction légère est hydrotraitée dans un appareil d'hydrotraitement (44) et la fraction lourde est hydroisomérisée au moyen de catalyseurs nickel-cuivre dans un réacteur (54), après quoi les effluents en provenance de l'appareil d'hydrotraitement (44) et du réacteur (54) sont combinés pour produire un flux de produit.
Patent CA-2227899-C (CA)
Title: Halloween backpack
Inventor: MORPHET DEBORAH A
IPC: A45F3/04
Filed: 1998-01-27
Granted: 2001-12-04
Abstract: The Halloween backpack of the present invention has, in one aspect, a hollow container having an outer surface adapted to be worn as a backpack on the back of a child, straps for releasable mounting of the hollow container on the back of the child, a hollow chute mounted onto the outer surface of the hollow container, the chute defining a passageway along the chute between a frontal chute opening in the chute and an aperture in the outer surface of the hollow container thereby forming a cooperating passageway sized to accept Halloween treats therethrough cooperating between the frontal opening and a holding cavity in the hollow container, the hollow chute extending upwardly of the hollow container so as to extend above a shoulder of the child when the child is wearing the hollow container as a backpack, the hollow chute shaped to present the frontal chute opening for access from a frontal position facing the front of the child whereby a Halloween treat may be deposited into the hollow chute from the frontal position or by the child.
Patent CA-2229974-C (CA)
Title: Fibres revetues d'une matiere hydrophobe
Inventor: BONNET EVELYNE
IPC: C03C25/106
Filed: 1998-02-18
Granted: 2001-01-16
Abstract: L'invention concerne des fibres revêtues d'une matière hydrophobe à base d'un oligomère de polydiène époxydé. Ce revêtement résulte de la photopolymérisation d'une composition comprenant au moins un oligomère de polydiène époxydé, au moins un sel photoamorceur et éventuellement un diluant réactif. Les fibres selon l'invention ont une très bonne résistance à l'hydrolyse et de bonnes propriétés mécaniques.
Patent CA-2230175-C (CA)
Inventor: GAUS GUNTER
IPC: A23K30/15
Filed: 1996-09-09
Granted: 2006-07-11
Abstract: The invention concerns an aqueous solution consisting of: a) 35-42 % by wt. of propionic acid, b) 30-40 % by wt. of formic acid, c) 5-10 % by wt. of ammonia and d) 10-30 9b by wt. of water and its use in animal nutrition.
Patent CA-2234936-C (CA)
Inventor: MURCH SIMON
IPC: A61K47/32
Filed: 1998-04-17
Granted: 2004-06-29
Abstract: This invention relates to a novel composition and a novel method of treating inflammatory bowel disease (IBD). More particularly, this invention pertains to a novel composition containing N-acetyl- glucosamine (NAG) as an active IBD treating agent and a pharmacologi- cally suitable carrier, and a method of administering the composition to the colon to treat IBD in a person afflicted with IBD. A composition for treating inflammatory bowel disease in a patient suffering from inflamma- tory bowel disease comprising: (a) a therapeutic amount of N-acetyl- glucosamine; and (b) a pharmacologically acceptable carrier, adapted to be administered colonically to said patient.
Patent CA-2238387-C (CA)
Inventor: REINPRECHT JON T
IPC: A61B17/00
Filed: 1997-06-27
Granted: 2008-03-18
Abstract: Selon la présente invention, des mélanges absorbables sont fabriqués à partir d'un composant prédominant d'ester d'acide gras mélangé avec un copolymère comprenant une quantité prédominante d' epsilon -caprolactone et une quantité moindre d'au moins un autre monomère copolymérisable d'autres monomères bioabsorbables. De tels mélanges conviennent particulièrement à la réalisation de revêtements d'articles chirurgicaux, y compris les sutures multifilamentaires.
Patent CA-2238953-C (CA)
Title: Line system for playing field
Inventor: PREVOST JACQUES
IPC: A01G9/28
Filed: 1998-05-26
Granted: 2002-12-10
Abstract: A method of visually marking a line in a natural grass turf playing surface by embedding a synthetic grass strip within the natural turf of football fields etc. The synthetic strip has a middle band of light coloured synthetic grass to mark the line and outer bands of green coloured synthetic grass which blend in with the adjacent natural grass. Installation commences with cutting a shallow trench in the turf surface. The synthetic grass turf marking strip is laid into the trench and resilient granular ballast is deposited on the strip backing between upstanding grass-like tufted ribbons.  The natural grass adjacent the outer green synthetic ribbons gradually grows into and blends with the outer edges of the outer synthetic green ribbon bands. The outer green coloured bands inhibit the lateral spread of natural grass over the light coloured middle band. The light coloured middle band of synthetic ribbons remain clear of natural grass to visually mark playing field lines in a permanent manner requiring significantly less maintenance than conventional line marking systems.
Patent CA-2239165-C (CA)
Inventor: MUMA JOSEPH H
IPC: B65B69/00
Filed: 1998-05-28
Granted: 2006-08-01
Abstract: A refuse bag opener that includes a material metering cylinder and a knife cylinder mounted therein and driven by suitable power means to rotate in opposite directions to feed bagged refuse therebetween. The metering cylinder and the knife cylinder are disposed in vertical spaced relation with the knife cylinder being the lowermost of the two. The hopper receives the bagged material and by way of a sloping lower wall directs the bagged material towards the knife cylinder. The lower sloped wall has a belt conveyor for direct feeding of the bagged material to the lower cylinder which by virtue of its rotation cuts the bag. The bagged refuse passes between the metering cylinder and the knife cylinder at a relatively even rate. A conveyor feeds the material from a supply source to the hopper and an outfeed conveyor delivers the emptied bags and contents of the bags to a suitable sorting location. Feed to the cutting cylinder is preferably no more than one bag deep and the feed is controlled by signals received from a sensing means to control the hopper feed conveyor and/or an infeed conveyor within the hopper. The metering cylinder has a plurality of flexible members radiating outwardly from a shaft and are spaced circumferentially therearound. The outwardly radiating members are flexible. The hopper has an inlet end thereto offset horizontally in an upstream direction from the metering cylinder and knife cylinder.
Patent CA-2239505-C (CA)
Title: Procede de preparation de derives du catechol
Inventor: TAKENAKA KEISHI
IPC: C07C201/12
Filed: 1996-12-13
Granted: 2006-04-04
Abstract: L'invention porte sur un procédé amélioré de production de dérivés du catéchol (1) pouvant servir d'intermédiaires pour des composés à usage médical ou agricole. Les étapes de la réaction sont représentées dans le processus (I), dans lequel R représente alkyle, cycloalkyle, aralkyle, alkoxy, halogéno, allyle ou aryle, et R<1> représente un groupe protégeant l'hydroxy. La première étape, de formylation, se déroule en deux phases en présence d'un catalyseur d'étain: tout d'abord entre 60 et 85  DEG C avec une conversion de 30 à 80 %, puis entre 95 et 105  DEG C jusqu'à l'achèvement, ce qui fournit un salicylaldéhyde (3) avec un rendement et une sélectivité élevés. Les dérivés du catéchol (1) sont très purs et donc d'un rendement élevé.
Patent CA-2239776-C (CA)
Inventor: TORMALA PERTTI
IPC: A61F2/30
Filed: 1996-09-27
Granted: 2005-01-25
Abstract: The invention relates to under tissue conditions degradable material, which is manufactured of polymer, copolymer or polymer alloy. The material has a non-crystalline, i.e., amorphous structure. Further, the material is molecularly oriented and reinforced by mechanical deformation.
Patent CA-2240093-C (CA)
Inventor: KOEPPE ROBERT J
IPC: B66B3/00
Filed: 1998-06-09
Granted: 2007-05-22
Abstract: A direction indicating device (4) for elevators is built into the door frame (3) near a floor door (1). The device (4) consists essentially of a retaining element (9), an up-direction arrow (10) and a down-direction arrow (11). In order to make the indicating device direction arrows (10, 11) visible from possibly all positions or viewing angles of the passengers on the floor, the device (4) is arranged on the door frame (3) three dimensionally with the direction arrows (10, 11) mounted on the front wall (14) as well as on the side wall (15) of the door frame (3). For further improvement of the visibility, another indicating device (4) can be arranged in a similar manner on the other side of the door frame (3). With the arrangement of this indicating device (4) on both sides of the floor door (1), a practically total visibility of the direction arrows (10, 11), through almost 180 degrees in the hallway, is assured.
Patent CA-2241304-C (CA)
Inventor: COOK ROBERT D
IPC: F16K1/36
Filed: 1998-06-22
Granted: 2007-11-06
Abstract: A fluid level control apparatus for selectively controlling the movement of liquid flowing out of a flotation cell is described. The fluid level control apparatus is significantly reduced in size in comparison with the flotation cell or cells to which it is connected which enables less expensive construction and reduced operating costs in terms of both the equipment and the plant as a whole. The fluid level control apparatus comprises a vessel having a valve positioned therein which includes a valve body structured with a curved surface which provides selective and finite control of fluid flowing through the vessel of the control apparatus.
Patent CA-2252780-C (CA)
Inventor: KOWALESKI RUTH MARY
IPC: C07D301/10
Filed: 1997-04-25
Granted: 2006-10-17
Abstract: Catalyseur approprié à l'époxydation d'oléfines ne contenant pas d'hydrogène allylique, en particulier d'éthylène, qui contient de l'argent et un ou plusieurs promoteurs sous forme de métal alcalin présents sur un support préparé par un procédé qui consiste à utiliser des constituants particulaires céramiques dont la taille des particules est choisie de manière à assurer un degré désiré de porosité sans qu'il soit nécessaire d'utiliser des matériaux organiques éliminés par combustion.
Patent CA-2257352-C (CA)
Title: Retinoid metabolizing protein
Inventor: PETKOVICH P MARTIN
IPC: A61K48/00
Filed: 1997-06-23
Granted: 2011-11-29
Abstract: Amino acid sequences and corresponding nucleic acid sequence of retinoid metabolizing protein found in human, mouse and zebrafish are described, as well as methods of using same.
Patent CA-2260220-C (CA)
Title: Anti-tipping mechanism
Inventor: LANGENFELD CHRISTOPHER C
IPC: A61G5/04
Filed: 1997-07-14
Granted: 2006-05-16
Abstract: An anti-tipping mechanism for a vehicle that provides a strut actively deployed by rotation from a retracted position so as to bring a wheel into ground contact to inhibit tipping of the vehicle.
Patent CA-2271685-C (CA)
Inventor: SUSPENE LAURENT GERARD
IPC: C08F4/00
Filed: 1997-10-30
Granted: 2008-02-12
Abstract: An invention is disclosed which pertains to components for gel coat compositions, a process for making such gel coat compositions, and a process for making gel coated articles. Low molecular weight unsaturated polymers which incorporate multiple pendent and/or terminal acrylic or methacrylic vinyl groups are made by the addition polymerization of acrylate/methacrylate monomers with epoxy acrylates such as glycidyl methacrylate, followed by ring opening of the oxirance via action of a (meth)acrylic acid in combination with a ring-opening catalyst to produce the final unsaturated polymer. Gel coat compositions containing such polymers possess improved rheological properties and may be used to create durable in-mold coatings for articles requiring good hydrolytic stability and UV resistance.
Patent CA-2277395-C (CA)
Title: Flow rate detector mechanism with variable venturi and exhaust gas sampling method using the same
Inventor: YAMAWAKI SHUTA
IPC: G01N1/38
Filed: 1999-07-09
Granted: 2008-10-14
Abstract: A flow rate detector mechanism using variable Venturi therein, comprising: a variable flow rate generator, comprising: a core 11; and a variable Venturi 12; wherein a throat (flow passage) cross-sectional area defined between the core and the venturi is able to be changed by shifting relative positions of the core and the venturi in a direction of axes thereof, and further comprising a flow rate calculation processing portion 30 for calculating a flow rate based on the relative positions in the direction of the axes thereof and for outputting the calculated flow rate, thereby continuously changing the constant flow rate, without occurrence of any disturbance therein. Further, with an exhaust gas sampling method applying the flow rate detector mechanism using variable Venturi, CVS flow rate is changed within the range of the phases of measure modes, so as to make small the difference between the peak dew point in the bag and the final dew point in the bag, as well as to cause the final dew point to approach the temperature at which the bag is kept.  Therefore, the dilution ratio of the final dew point is decreased, so as to improve the accuracy in analysis.
Patent CA-2287004-C (CA)
Inventor: MUJTABA SYED AON
IPC: H04L5/02
Filed: 1999-10-19
Granted: 2004-12-07
Abstract: Methods and apparatus for wireless communication in systems such as omni-beam and narrow-beam fixed wireless loop (FWL) systems. In a first technique in accordance with the invention, referred to as code division duplex (CDD) time-slotted CDMA, uplink and downlink portions of the system are separated using code division duplexing, while the users within a given cell are also separated using codes, e.g., using time- slotted CDMA. In a second technique in accordance with the invention, referred to as time division duplex (TDD) time-slotted CDMA, uplink and downlink portions of the system are separated using time division duplexing, e.g., time slots, while the users in a given cell are separated using codes, e.g., time-slotted CDMA. Both the CDD and TDD techniques may make use of an electronically-steered beam which is designed to provide simultaneous coverage within a given cell for two or more users separated by codes. In a third technique in accordance with the invention, referred to as orthogonal frequency division multiplexing (OFDM), uplink and downlink portions of the system are separated in frequency, while the users are, e.g., also separated in frequency.
Patent CA-2293885-C (CA)
Inventor: GILLARD RAY W
IPC: E01C23/00
Filed: 1999-12-30
Granted: 2008-08-26
Abstract: A ground working device is formed from a sub-frame having a first side and a second side, plural discs mounted for rotation on the sub-frame between the first side and the second side about an axis that extends from the first side to the second side; and a set of scoops mounted on each disc in ground contacting position. The scoops efficiently lift the ground surface material, which falls to the ground in a sorted manner with coarser material on top. A motor is operatively connected to the plural discs for rotating the discs about the axis. Each scoop in each set of scoops has a ground working face that extends transversely to the disc on which the respective scoop is mounted. The scoops each have concave ground contacting surfaces. Each scoop is received in a respective slot in the disc in which the respective scoop is mounted. The ground working device is mounted on a main frame, which is provided with ground engaging wheels. The sub-frame is retractably mounted on the main frame.
Patent CA-2302198-C (CA)
Inventor: STROBEL MARK A
IPC: B29D7/01
Filed: 1998-09-23
Granted: 2007-01-09
Abstract: Embossed oriented thermoplastic films and a method of making same are described. The embossed oriented thermoplastic films have substantially the same mechanical properties as unembossed oriented thermoplastic films. The method includes providing an oriented thermoplastic film having first and second major surfaces, softening at least one of the first and second major surfaces to produce a softened surface, embossing the softened surface to produce an embossed oriented thermoplastic film, and cooling the embossed oriented thermoplastic film.
Patent CA-2302804-C (CA)
Inventor: NIMBERGER SPENCER M
IPC: F16L37/34
Filed: 2000-03-24
Granted: 2008-11-18
Abstract: A low emission fluid disconnect 10 is provided along a flexible flow line 12 for transmitting fluid from the transport 16 to a bulkhead 14. The disconnect includes a ball valve 32 including a ball 31 rotated between the opened and the closed positions about a stem axis. The disconnect also includes union housing 64 and a female body 58 for threaded engagement with the ball valve. A poppet sleeve 82 is linearly moveable within the union housing between the opened and closed positions, and has an end surface 104 substantially conforming to an exterior surface of the ball. The poppet member is guided when moving between the opened and closed positions. A very low volume of fluid is released when the union housing is disconnected from the ball valve.
Patent CA-2307630-C (CA)
Inventor: JANSCH MANFRED
IPC: E21B33/047
Filed: 1998-10-27
Granted: 2006-12-12
Abstract: An apparatus for retaining two strings of tubulars characterised in that said apparatus comprises body parts (1, 2; 101, 102) of a device for retaining a single string of tubulars and a converting member (103;  305). A device for retaining a string of tubulars, said device comprising at least one body part (203) having a curved tapered surface (202) upon which inserts are located for engagement with said string of tubulars characterised in that said curved tapered surface comprises a recess for the passage of cables.
Patent CA-2308362-C (CA)
Inventor: BUCHMAN JAMES E
IPC: B65D33/25
Filed: 2000-05-12
Granted: 2008-07-08
Abstract: A flexible package includes a recloseable zipper along the mouth of the package for selective opening and closing of the mouth. The zipper includes first and second closure profiles, which are configured and constructed to selectively interlock. A tamper evident seal is provided, attached to both the first and second closure members to indicate whether or not the seal on the package has been damaged. The tamper evident seal extends along a side of at least one of the first and second closure profiles. A slider device is configured and constructed to facilitate the mating (closing) and unmating (opening) of the zipper, and to open the tamper evident seal to provide access to the package interior.
Patent CA-2309008-C (CA)
Inventor: MCBAIN RICHARD
IPC: G01B11/00
Filed: 2000-05-23
Granted: 2007-07-17
Abstract: This application is concerned with laser triangulation sensors for object dimension and position determination, and in particular, more effective measurement of object shape s and/or thickness using laser triangulation sensors having multiple projected laser beams and at least two linear or matrix array cameras to view the images of light reflected from the object due to the beams impinging on the object surface. Besides disclosure of the basic operation of "multi-point " sensors of this type, novel methods and apparatus are also disclosed to assure function of the device even with objects, such as lumber, having pronounced protrusions and depressions in their surface.
Patent CA-2313564-C (CA)
Inventor: FRIES KARL
IPC: B23B5/22
Filed: 2000-07-07
Granted: 2005-02-08
Abstract: The apparatus comprises a chuck member to be mounted within the operating area of the machine tool and a work piece carrier that can be put onto the chuck member and clamped thereto. First positioning members provided on the chuck member and second positioning members provided on the work piece carrier cooperate to define the position of the work piece carrier along three coordinate axes each running perpendicular to each other as well as with regard to the angular orientation. A clamping mechanism fixes the work piece carrier member to the chuck member in the afore mentioned defined position. In order to ensure an increased resistance against tilting momenta and torque occurring during the machining of a work piece, the first positioning members are constituted by conical centering pins and the second positioning members are constituted by recesses in the shape of a two-stage groove having two shoulders. The edges of the shoulders protruding towards the interior of said groove have a mutual distance that is somewhat less than the width of the conical centering pins, measured between those locations that touch the edges of the shoulders once the work piece carrier is clamped to chuck member.
Patent CA-2313673-C (CA)
Inventor: LAN RED
IPC: B62B7/08
Filed: 2000-07-06
Granted: 2004-05-18
Abstract: A foldable carriage includes a handle unit having a pair of struts, a pair of curved handgrips pivoted to the struts and connected pivotally together, and a first locking unit connected to the handgrips for locking the handgrips against pivotal movement. The carriage further includes a pair of foldable wheeled frames movable along the struts, a pair of second locking units for interlocking with the wheeled frames so as to lock the wheeled frames against movement, and a pair of transmission links connected to the handgrips and the second locking units for unlocking the second locking units.