baber/WOPTO huggingface dataset:
Patent CA-2283387-A1 (CA)
Title: Conditioning metal surfaces prior to phosphate conversion coating
Inventor: SHIMODA KENSUKE
IPC: C23C22/78
Filed: 1998-03-09
Abstract: A pretreatment before phosphating conversion coating is effected by contacting a metal substrate to be coated with a pretreatment composition that has a pH from 4 to 13 and contains dispersed fine particle size alkali metal or ammonium salts and divalent or trivalent metal phosphates. The conditioning achieved is as good as with conventional Jernstedt salts and the pretreatment compositions according to the invention are more storage stable.
Patent CA-2283845-A1 (CA)
Title: Polyolefin based hot melt adhesive composition
Inventor: VION JEAN-MARC
IPC: D06N7/00
Filed: 1999-01-25
Abstract: A hot melt adhesive polyolefin composition having a viscosity from 7,000 to less than 500,000 mPa.sec, at 190 °C comprising (by weight): I) 5-85 % of a crystalline propylene polymer selected from a propylene homopolymer and copolymers of propylene with ethylene or a C4-C10 .alpha.-olefin or blends thereof, having isotactic index from 80 to 98 %; II) 5-85 % of an heterophasic polyolefin composition comprising: (i) a crystalline propylene polymer and (ii) an amorphous copolymer of ethylene with propylene or a C4-C10 .alpha.-olefin or blends thereof, containing less than 40 % of ethylene; III) 10-75 % of a material selected from aliphatic hydrocarbon resin, terpene/phenolic resin, polyterpenes, rosin, rosin esters and derivatives thereof and a blend thereof;  and optionally IV) a mineral paraffinic or naphthalenic oil or an amorphous poly(.alpha.-olefin) having low molecular weight or a mixture thereof.
Patent CA-2283865-A1 (CA)
Title: Weaving reed dent spacing arrangements
Inventor: WANG PAMELA C
IPC: D03D49/68
Filed: 1998-01-19
Abstract: A weaving tried (3) having a plurality of reed dents (14) fixed in certain positions and which may be located in a reed baulk (6). The reeds may be plain reeds or reeds, with any profile, usable virtually on any loom. The dents are formed of wires and spaces (10) and are variably spaced. The variable spaces are formed by varying the thickness of the wires, the width of the spaces, or a combination thereof to produce fabrics with a desired warp density across the entire width of a given fabric. The reed may produce a consistent warp end density which improves the mechanical properties of a given fabric and also provides virtually consistent air permeability across the width of the finished fabrics. The reed can also produce changes in warp end density in a given fabric for certain desired effects. A rotary type reed (14) and weaving rotor (19) for multiple-shed looms are also disclosed.
Patent CA-2284118-A1 (CA)
Inventor: CORMIER CLAUDE
IPC: B65D1/02
Filed: 1999-09-28
Abstract: A collapsible container for storage and transportation of liquids, slurries and powders. The container is of generally cuboid or rectangular parallelepiped shape and has sidewalk which fold inwardly upon the application of a force in the vertical direction. The height of the container can be substantially reduced when the sidewalls are folded. The container is retained in its collapsible position by the application of an airtight cap or by a retaining strap or sleeve. Upon removal of the cap, strap or sleeve, the resiliency of the sidewalk causes them to substantially unfold and the container is then ready for filling.
Patent CA-2286199-A1 (CA)
Inventor: IKUTA TORU
IPC: C04B41/53
Filed: 1999-02-05
Abstract: A concrete hardening retarder which comprises a polymer (A) having the ability to retard concrete hardening. The polymer (A) comprises structural units derived from an ingredient capable of bringing about a glass transition temperature (Tg) of -5 ~C or lower. The retarder has a surface tension of 45 mN/m or lower. The content of those units is about 10 wt.% or higher based on the whole polymer (A). The polymer (A) has a functional group capable of forming a salt with a metal ion (especially a free acid group or a group capable of generating an acid group through hydrolysis). The polymer (A) may be a vinyl polymer, a polyester (saturated or unsaturated polyester), or a cross-linked or graft polymer obtained from an unsaturated polyester. A sheet or decorative-material pack may be formed from the retarder. Use of the retarder, sheet, pack, or the like is effective in improving stain removability from the surface of the concrete panel having tiles attached thereto beforehand, the suitability of a concrete surface for washing finish, and the state of the finished surface.
Patent CA-2287020-A1 (CA)
Title: Self-distracting and fixating bone body implant, vertebral interbody implant and method
Inventor: BAGBY GEORGE W
IPC: A61F2/44
Filed: 1999-10-21
Abstract: A bone joining implant, comprising a tubular body having an open leading end and a central aperture, the central aperture similarly sized to the open leading end, the open leading end communicating with the central aperture and configured to entrap a bone projection from each of a pair of adjacent bone bodies being joined together. A method is also provided.
Patent CA-2287394-A1 (CA)
Title: Methods for synthesizing 2-substituted imidazoles
Inventor: HONG YAPING
IPC: C07D401/04
Filed: 1998-04-17
Abstract: The present invention is a method of preparing 2-substituted imidazoles from readily available imidazoles having a leaving group in the 2-position, by alkylating the imidazole under mild conditions to afford a 3-N-alkylated imidazolium salt; and coupling the imidazolium salt with a nucleophile also under mild conditions to afford a 2-substituted 3-N-alkylated imidazolium salt. The reaction product can optionally be isolated and purified. The 2-substituted 3-N-alkylated imidazolium salt is hydrolyzed to afford a 2-substituted imidazole. Alternatively, the imidazole is coupled with a nucleophile in the presence of fluoride ion to provide a 2-substituted imidazole.
Patent CA-2288087-A1 (CA)
Title: Ferroresonant transformer ballast for maintaining the current of gas discharge lamps at a predetermined value
Inventor: JANIK RAYMOND G
IPC: H05B41/28
Filed: 1998-02-11
Abstract: The present invention relates to a ferroresonant transformer ballast for regulating the current of gas discharge lamps, the ballast comprising a magnetic core; a first coil wound about the magnetic core and energizable from a variable source for supplying a changing input voltage and current; a second coil wound about the magnetic core and magnetically coupled to the first coil so as to induce a voltage across terminals of the second coil in response to a change in current from the first coil; an output capacitor connected across the terminals of the second coil for resonance; a third coil wound about the magnetic core and magnetically coupled to the second coil so as to induce a voltage across terminals of the third coil in proportion to the average voltage across the output capacitor; at least one gas discharge lamp connected across terminals of the third coil whereby voltage across the gas discharge lamp is regulated in response to the average voltage of the output capacitor; a control inductor to be switchably coupled in electrically parallel relationship with the output capacitor; and means for switching the control inductor in a pulsing manner into and out of parallel relationship with the output capacitor in response to a current level of the gas discharge lamp to substantially maintain the current level of the gas discharge lamp at a predetermined value when the lamp is operating in a steady state mode, the switching means including a switch having terminals coupled in series with the control inductor.
Patent CA-2288517-A1 (CA)
Inventor: NAEF MARKUS
IPC: G03B27/32
Filed: 1999-11-02
Abstract: For the manufacture of large format photographic prints, the original image (V) is divided into a matrix arrangement of partial image originals (A1-D4) consisting of lines (1-4) and columns (A-D) with lateral edges (R) which are parallel to the columns of the matrix arrangement. A linear arrangement of sequential latent partial pictures is produced from the individual partial image originals by way of a printer and by sequential projection, whereby the projection is carried out in such a way that the lateral edges (R) of the latent partial pictures which correspond to the lateral edges of the latent partial image originals extend parallel to the longitudinal direction (L) of the linear arrangement of the latent partial pictures. The exposed copy material (P) is developed in a pass-through developing arrangement, whereby a partial image copy is produced from each partial image original and the partial image copies are assembled to a complete compound picture (K). To avoid color and/or density jumps in the region of the separation lines between the individual partial image copies, those partial image copies (B1-B4, D1-D4) which correspond to the partial image originals (B1-B4, D1-D4) in each second column (B, D) of the matrix arrangement, are respectively guided through the pass-through developing arrangement and rotated in their proper plane by 180°, relative to the latent partial images which correspond to the partial image originals in the other columns of the matrix arrangement. (Figure 2)
Patent CA-2291765-A1 (CA)
Inventor: RICHARDSON PETER
IPC: A61P5/10
Filed: 1998-05-26
Abstract: Pharmaceutical compositions are described, which comprise: a) a peptide poorly soluble in aqueous physiological saline solution, as active ingredient; b) a non-ionic aromatic hydrotropic pharmaceutically acceptable agent; and c) a physiological aqueous solution wherein the peptide (a) is an LHRH analogue or a GRF peptide, and wherein the non-ionic aromatic hydrotropic agent (2) is selected from the group consisting of: nicotinamide, nicotinic acid, benzoic acid, salicyclic acid, gentisic acid, ascorbic acid, histidine, tryptophan, phenylalanine, tyrosine, cresol, phenol, xanthines, pyridoxine, folic acid, saccharin, as well as non-ionic derivatives thereof.
Patent CA-2294484-A1 (CA)
Title: Atraumatic medical retrieval device
Inventor: RILEY JAMES W
IPC: A61B17/221
Filed: 1999-04-22
Abstract: Baskets with atraumatic distal tips allow the capture of material from difficult-to-reach areas of the body, while reducing the risk of tissue damage.
Patent CA-2294751-A1 (CA)
Title: Compositions a base de poly (fluorure de vinylidene), souples et resilientes, leur procede de preparation
Inventor: PASCAL THIERRY
IPC: C08K5/00
Filed: 1998-06-08
Abstract: L'invention concerne des compositions à base de poly (fluorure de vinylidène), souples et résilientes. Elles comportent pour 100 parties en poids d'un homopolymère (A) de fluorure de vinylidène (VF2) ou d'un copolymère (A) de VF2 et d'au moins un autre monomère copolymérisable avec VF2, dans lequel pour 100 parties en poids de VF2 ledit monomère est présent en une quantité comprise entre 0 et 30 parties en poids, de 0,5 à 10 parties en poids d'un élastomère B et de 0,5 à 10 parties en poids d'un plastifiant C, avec la condition supplémentaire que la somme de B plus C soit de 1 à 10,5 parties en poids et, d'autre part, en ce que l'homopolymère de fluorure de vinylidène A soit choisi de telle sorte qu'il possède un indice de fluidité, mesuré selon la norme ISO 1133 à 230 ~C sous une charge de 5 kg, inférieur à 5 g/10 min et un module critique GC, mesuré à 190 ~C, à l'intersection des modules de cisaillement à l'état fondu G' et G'', compris entre 5 et 22 kPa. D'une manière générale, elles conviennent pour la réalisation d'objets, d'articles tels que feuilles, films, gaines de tubes, tuyaux, etc. soumis à des contraintes dans des conditions de haute et/ou de basse température, au contact de substances particulièrement agressives (telles qu'hydrocarbures, acides forts, solvants, bases minérales et organiques) au cours desquelles leurs propriétés de résilience et de souplesse sont particulièrement requises (industries pétrolière et gazière, génie chimique, industries du bâtiment et des travaux publics).
Patent CA-2299039-A1 (CA)
Inventor: LITA CHRISTIAN
IPC: G06F15/00
Filed: 2000-02-21
Abstract: A method, computer program product and server for use managing connection requests to a pool of servers identified by a given URL. The method begins in response to a connection request from a given client machine that initiates a user session for associating a session identifier with a given server in the pool. The session identifier is then used to generate a "virtual" URL that redirects the connection request to the given server. Thereafter, any additional connection requests issued from the given client machine during the user session are redirected to the given server so that all content is served to the client from the same location. When the user session terminates, the virtual URL is inactivated and the given server is returned to the pool so that it can then be assigned a new user session to manage.
Patent CA-2299582-A1 (CA)
Title: Automatic mobile object locator apparatus and method
Inventor: MOORE I ANDREW
IPC: G01S5/00
Filed: 2000-02-25
Abstract: Any automatic mobile object locator apparatus and method provides position information and map data to user terminal equipment through a data communication network, such as the Internet. A GPS receiver in mobile equipment attached to a vehicle obtains global position information of the vehicle which is transmitted through a communication network, including at least a wireless network portion, to a processor unit. The vehicle position information for like vehicles associated with one customer are stored in a customer specific database. Map data and position information are transmitted through the data network between the processor unit and user terminal equipment wherein a selected map and the location of a selected vehicle(s) are coupled and displayed to the user.
Patent CA-2302304-A1 (CA)
Title: Apparatus for measuring minority carrier lifetimes in semiconductor materials
Inventor: AHRENKIEL RICHARD K
IPC: G01R31/265
Filed: 1998-09-02
Abstract: An apparatus (30) for determining the minority carrier lifetime of a semiconductor sample (32) includes a positioner for moving the sample relative to a coil (44). The coil (44) is connected to a bridge circuit (42) such that the impedance of one arm of the bridge circuit (42) is varied as sample is positioned relative to the coil (44). The sample (32) is positioned relative to the coil (44) such that any change in the photoconductance of the sample (32) created by illumination of the sample (32) creates a linearly related change in the input impedance of the bridge circuit (42). In addition, the apparatus (30) is calibrated to work at a fixed frequency so that the apparatus (30) maintains a consistently high sensitivity and high linearly for samples of different sizes, shapes, and material properties. When a light source (34) illuminates the sample (32), the impedance of the bridge circuit (42) is altered as excess carriers are generated in the sample (32), thereby producing a measurable signal indicative of the minority carrier lifetimes or recombination rates of the sample (32).
Patent CA-2305932-A1 (CA)
Inventor: KUNZE WOLFGANG
IPC: B21D5/04
Filed: 2000-04-13
Abstract: There is described a new bending and squeezing blade for sheet metal bending machine. The blade comprises a bending tooth provided with a head surface that is suitable to engage the edge of a sheet metal to carry out its bending at 90° and with a foot surface that is suitable to engage the 90° folded edge of the sheet metal to carry out its additional bending at an angle greater than 90° and its possible squeezing on the remaining part of the sheet metal up to art angle substantially equal to 180°. In order to assure the locking of the sheet metal during the operation of squeezing the machine preferably comprises a blank holder provided with a pressing member, that can be controlled so as to project from the support foot of the blank holder in order to lock the sheet metal on a fixed counter blade.
Patent CA-2308597-A1 (CA)
Inventor: PETER JEFFREY
IPC: B60D1/02
Filed: 2000-05-16
Abstract: The present invention involves a hitch pin for connecting a drawn vehicle to a towing vehicle. The hitch pin includes a pin having a lower end and a transverse collar near its upper end, a handle mounting member extending upwardly at the upper end, and a handle pivotally connecting to the handle mounting member at an axis. The handle includes a pivot portion having a locking lever biased from pivoting downwardly and a latch portion. A  first embodiment of the present invention includes the handle mounting member having two opposing flanges with flat inner surfaces and the pivot portion having flat sides such that pivot portion pivotally connects to the mounting member with the sides respectively facing the inner surfaces. A second embodiment thereof includes the handle mounting member having flat sides and the pivot portion having two opposing flanges with flat inner surfaces such that pivot portion pivotally connects to the mounting member with sides respectively facing the inner surfaces. When the handle connects to the handle mounting member, the locking lever engages a notch formed on the handle mounting member and the latch portion engages the lower end of the pin, defining a locked position of the hitch pin.  When pressure is applied downwardly against the locking lever, the locking lever pivots downwardly such that it clears the notch, disengaging the latch portion from the lower end and allowing pivotal movement of the handle about the axis.
Patent CA-2309419-A1 (CA)
Title: Autonomous battery equalization circuit
Inventor: PETERSON WILLIAM ANDERS
IPC: H02J7/00
Filed: 2000-05-25
Abstract: A battery equalization circuit for equalizing charge between at least first and second series connected batteries included a switching circuit and a resonant circuit. Each battery has a positive end and a negative end, where the positive end of the second battery is coupled to the negative end of the first battery at a common node. The switching circuit is connectable to (i) the positive end of the first battery at a positive node, and (ii) the negative end of the second battery at a negative node; and the resonant circuit is connectable between the switching circuit and the common node of the batteries, wherein the switching circuit is adapted to alternately couple the resonant circuit in parallel with the first and second batteries such that a DC current component flows between the first and second batteries through the resonant circuit as a function of a charge imbalance therebetween.
Patent CA-2310416-A1 (CA)
Inventor: BJORK CHRISTIAN
IPC: H03B5/12
Filed: 1998-11-10
Abstract: A monolithic high frequency voltage controlled oscillator trimming circuit includes a plurality of capacitance loops (140) selectively connected between a first (120) and second (130) differential input of a voltage oscillator active network (110). A plurality of diodes (159, 160), connected in series with the respective plurality of capacitance loops (140), selectively connect respective capacitance loops (140) between the first (120) and second (130) differential input when forward biased. In a similar fashion, the plurality of diodes (159, 160) selectively disconnect the respective capacitance loops (140) from the first (120) and second (130) differential input when reverse biased. A controller (180) applies a forward biasing voltage to the diode (159, 160) of the selected capacitance loop (140) to connect the capacitance loop (140) to the active network (110) of the voltage controlled oscillator and applies a reverse biasing voltage to the diode (159, 160) of the selected capacitance loop (140) to disconnect the capacitance loop (140) from the active network (110). The diodes (159, 160) used in the capacitance loops (140) form a switch operable at high frequencies and are formed from a bipolar complementary metal oxide semiconductor electro-static discharge protection diode.
Patent CA-2313806-A1 (CA)
Title: Postweaning multisystemic wasting syndrome virus from pigs
Inventor: POTTER ANDREW A
IPC: A61K39/12
Filed: 1998-12-11
Abstract: The cloning of a novel PCVII viral genome is described as is expression of proteins derived from the PCVII genome. These proteins can be used in vaccine compositions for the prevention and treatment of PCVII infections, as well as in diagnostic methods for determining the presence of PCVII infections in a vertebrate subject. Polynucleotides derived from the viral genome can be used as diagnostic primers and probes.
Patent CA-2317368-A1 (CA)
Inventor: O'BRIEN STEPHEN
IPC: G02B5/28
Filed: 2000-08-25
Abstract: An improved stepped etalon comprises a transparent body having a stepped surface. Adjacent step lands are separated from each other by a transition region which includes a curved, waved, or otherwise varied step wall such that the average height of the stepped surface does not change abruptly in the transition region from the height of one land to another, but instead varies gradually according to the particular shape of the step wall. In an alternative embodiment, the step transition is formed using a grey-scale or half tone patterning in which the average height gradually varies across the transition region. The non-planar transition region reduces the amount of coherent interference caused by the step transition thereby reducing the dead spot behind the step transition portions where interference prevents accurate measurements of light transmission from being made.
Patent CA-2317569-A1 (CA)
Title: A method and a device for matching images
Inventor: FAHRAEUS CHRISTER
IPC: G06V30/142
Filed: 1998-12-30
Abstract: In a method for matching two images, each consisting of a plurality of pixels and having partially overlapping contents, the degree of correspondence between the contents of the images is determined for different displacement positions representing different overlappings of the images. More specifically, a plurality of numbers are determined for each one of a plurality of said displacement positions. Each number is formed with the aid of pixel values from both images and is used to simultaneously produce overlap assessment values for at least two said displacement positions. The overlap assessment values retrieved are subsequently used to determine the degree of correspondence between the images for the different displacement positions. The method is carried out with the aid of a computer and can be implemented as a computer program.
Patent CA-2324219-A1 (CA)
Inventor: SAKAMAKI CHARLES E
IPC: G06F12/0886
Filed: 1999-03-04
Abstract: A circuit for digital signal processing calls for the use of a variable length instruction set. An exemplary DSP includes a set of three data buses (108, 110, 112) over which data may be exchanged with a register bank (120) and three data memories (102, 103, 104). A register bank (120) may be used that has registers accessible by at least two processing units (128, 130). An instruction fetch unit (156) may be included that receives instructions of variable length stored in an instruction memory (152). The instruction memory (152) may be separate from the set of three data memories (102, 103, 104).