baber/WOPTO huggingface dataset:
Patent CA-2256086-A1 (CA)
Title: Liquid rheological additives having active hydrogen moieties for non-aqueous systems and non-aqueous systems containing such liquid rehological additives
Inventor: SANTHANAM MAHALINGAM
IPC: C09D5/04
Filed: 1998-12-15
Abstract: A liquid, pourable 100% active Theological additive especially useful for thickening non-aqueous compositions is described. The additive, which exists in a pourable, pumpable form at up to a 100% as a Theologically active composition, exhibits excellent thickening efficiency for systems including inks, epoxies, polyesters, paints, greases and other systems, including ease of dispersibility, without adversely affecting gloss. The additive may operate by both an associative and a reaction mechanism to provide rheological viscosity properties to such systems, and is also similarly useful for aqueous systems. One important aspect of the present invention relates to a liquid Theological additive composition comprising a reaction product obtained from the reaction of: a) One or more active hydrogen compounds, wherein the active hydrogen compound contains at least two active hydrogen moieties; and b) One or more compounds containing at least two moieties which are capable of reacting with the active hydrogen moieties of (a), wherein the active hydrogen moieties of compound a) are in stoichiometric excess of the reactive moieties of compound b); and the reaction product has at least two active hydrogen moieties at its termini.
Patent CA-2257290-A1 (CA)
Title: Particules spheriques d'hydroxyapatite et procede de production
Inventor: RENKEMA PETER J
IPC: A61K6/838
Filed: 1997-06-20
Abstract: Procédé de production de particules sphériques non poreuses d'hydroxyapatite ayant une taille n'excédant pas 250 microns et une densité d'au moins 3,00 g/cm?3¿. Le procédé consiste en l'agglomération en présence d'eau comme seul additif d'un matériau d'alimentation à base d'hydroxyapatite pulvérulent ayant une pureté d'au moins 97 % et ayant des impuretés métalliques n'excédant pas 500 ppm afin d'obtenir des particules d'hydroxyapatite dont la taille ne dépasse pas 350 microns. Les particules sont ensuite séchées puis frittées à une température allant de 1 100 ·C à environ 1 200 ·C pour produire des particules sphériques et non poreuses d'hydroxyapatite qui ne dépassent pas 250 microns et dont la densité est d'au moins 3,00 g/cm?3¿. De telles particules ont plusieurs applications médicales, y compris le remplacement des os, les revêtements d'implants et les applications dentaires telles que l'augmentation de la crête alvéolaire, obturations de cavités après extraction de racines de dents, restauration de lésions osseuses périodontiques, et augmentations des tissus mous.
Patent CA-2257526-A1 (CA)
Title: Dielectric loaded microstrip patch antenna
Inventor: CUHACI MICHEL
IPC: H01Q5/00
Filed: 1999-01-12
Abstract: A dielectric loaded microstrip patch antenna is provided to deliver relatively wide operational bandwidth dual-band, with relatively good isolation and flexibility for circular polarization, while having a compact design and light weight to suit mobile and wireless applications. The disclosed invention allows for (a) an antenna size reduction for a given operating frequency, (b) an enhancement of operational bandwidth, (c) dual-band and dual polarization operations. The invention operates on the principle that by properly loading a patch, its resonating frequency and its quality factor (Q) can be modified. The loading can be achieved using dielectric strips strategically placed under the patch. A preferred embodiment consists of a conducting patch with an air dielectric layer over a ground plane, dielectric strips, .epsilon.r1 and .epsilon.r2, and a feed network. The antenna operating frequency is controlled by the dielectric permittivity, dimensions and locations of the strips er1. The maximum effect occurs at the location where the electric field is maximum. The ere strip is used to perform a function of matching the antenna to a feed network. Alternative embodiments may utilize a probe or a direct-coupled feed. The number of dielectric strips used, their placement and the method of excitation are determined by the intended operation of the antenna.
Patent CA-2258337-A1 (CA)
Inventor: SKATRUD PAUL LUTHER
IPC: C12N1/21
Filed: 1997-06-18
Abstract: Composés isolés d'acide nucléique codant le gène biosynthétique murD du peptide souche Streptococcus pneumoniae. L'invention porte également sur des vecteurs et des cellules hôtes hétérologues transformées servant à exprimer le produit enzymatique Mur D et sur une méthode pour identifier les composants inhibant la biosynthèse du peptide souche.
Patent CA-2260189-A1 (CA)
Inventor: OSTERHOUT GLEN W
IPC: H05B3/14
Filed: 1997-06-24
Abstract: An electrical heating cable (1) in which at least two elongate conductors (3, 4) are separated by an insulating spacer (5) and are contacted by at least one elongate resistive heating strip (2). The heating strip, which contacts alternately the first conductor and the second conductor at contact points which are longitudinally spaced apart along the length of the strip and along the length of each of the conductors, is made from a conductive polymer composition which exhibits PTC  behavior. The conductors are concentric stranded wires having a lay length L of at most 20 mm or a lay angle .beta. of at least 11°, or a lay length L of at most 20 mm and a lay angle .beta. of at least 10°.
Patent CA-2260252-A1 (CA)
Title: Polymeric compositions having increased uhf receptivity
Inventor: LONGUET MICHEL
IPC: C08K3/00
Filed: 1997-07-09
Abstract: A composition comprising: an ethylene containing polymer; 50 to 250 parts by weight a filler material, per 100 parts by weight ethylene containing polymer (50 to 250 phr); and 0.05 to 50 parts by weight a chemical compound per 100 parts by weight ethylene containing polymer (0.05 to 50 phr) having the structure:  A-B-[(C)y]x D wherein: A comprises one or more of the following: hydrogen, an alkyl group, an aryl group; or an alkyl aryl group; B is a bridging group between A  and C comprising one or more of the following: a carboxylic acid, a 1,2-dicarboxylic acid derived from an anhydride, an amine, an amide, a sulfate, a sulphonate, a phosphate or a carboxylic ester of a polyhydric alcohol containing 2 hydroxyl groups; C  comprises an ethylene oxide repeating unit; D comprises one or more the following:  hydrogen, an alkyl group, an alkali or an alkaline earth metal; y is 0 to 200 and x = 1, 2, 3, 4 or 5. A preferred filler material comprises carbon black and preferred polymers include ethylene-containing polymers such as ethylene-propylene copolymer or ethylene-propylene terpolymers. The present invention also includes articles of manufacture incorporating the polymer compositions.
Patent CA-2261144-A1 (CA)
Inventor: PRIEBE WALDEMAR
IPC: C07H1/00
Filed: 1997-07-23
Abstract: Divulgation d'une méthode de synthèse améliorée de l'annamycine. Cette synthèse repose sur une méthode de désacétylation sélective du précurseur de l'annamycine et sur la purification du produit désacétylé par filtration. En outre, cette méthode comprend une étape de désilylation du précurseur de l'annamycine dans des conditions acides. Enfin, on divulgue des méthodes améliorées pour la purification du produit final. L'annamycine et ses précurseurs ont les formules suivantes : (voir formule I) (voir formule II)
Patent CA-2262407-A1 (CA)
Title: Method and apparatus for hip prosthesis
Inventor: DENNIS DOUGLAS A
IPC: A61F2/32
Filed: 1997-06-05
Abstract: This invention is a prosthesis (10) for allowing natural ball and socket type movement, as in a hip or shoulder. A femoral component (20) having a ball (22) at one extremity is engaged with an acetabular component (60) having a hemispherical cup (62) to receive the ball (22). A ligamentous material (80) extends from a port (70) in the hemispherical cup (62) to a port (32) in the ball (22) to apply a resistive force to resist any dislocating force, the resistive force varying in proportion to the movement of the femoral component (20) from a natural and relaxed position in relation to the acetabular component (60).
Patent CA-2262840-A1 (CA)
Inventor: RUDOLPH ROBIN RICHARD
IPC: A61P31/12
Filed: 1997-08-01
Abstract: A flea infestation in the hair coat of a terrestrial mammal, notably dogs or cats, is controlled, eliminated or prevented by the systemic administration to the mammal of a 2,4-dienoic acid, salt or ester insecticide in an amount that is lethal to the fleas and/or their eggs, yet not sufficient to maintain a concentration of the insecticide in the host animal's blood that would be lethal to the fleas or their eggs if the fleas or eggs were fed exclusively and directly on the blood.
Patent CA-2263069-A1 (CA)
Title: A high-resolution television system
Inventor: MIROSHNICHENKO SERGEI IVANOVIC
IPC: A61B6/00
Filed: 1996-11-13
Abstract: The present invention relates to a high-definition television system that comprises the following elements: at least two television cameras; a unit comprising several analog-digital converters; a video-signal-standard converter; a RAM-type memory; means for synthesizing an output video signal which are connected to each other and to the outputs of the television cameras; and a central processor such as a (personal) computer. The means for synthesizing an output video signal comprise a multiple-channel geometric distortion corrector as well as a synchronizing unit. The above-mentioned means are used in a dynamic process for efficiently assembling image fragments into a full "seam-less" image, wherein said image has a definition of at least 3000 x 4000 elements with a resolution and a contrast at least equal to those of pictures on large-scale photographic or cinematographic X-ray films. The corrector is connected to the television camera outputs through the analog-digital conversion unit and to the (personal) computer input through the video-signal-standard converter and the RAM. The control input of the synchronising unit is connected to the synchronisation output of at least the last television camera, while the control outputs of said unit are connected to the clock input of the analog-digital conversion unit, to the address inputs of the corrector and to the control and address synchronisation inputs of the video-signal-standard converter.
Patent CA-2263204-A1 (CA)
Title: Process for producing mercaptoalkanesulfonates and phosphonates and derivatives thereof
Inventor: HARIDAS KOCHAT
IPC: C07C319/16
Filed: 1997-09-23
Abstract: A two step single-pot process for producing dimesna (NaSO3-(CH2)2-S-S-(CH2)2-SO3Na) begins by reacting an .omega.-alkenesulfonate with a sulfide such as NaSH to yield mesna (HS-(CH2)2-SO3Na). (This can be isolated or converted to a C1-4 thioalkyl ether thereof by reaction with sodium alkoxide and an alkyl halide). In the second step, mesna is oxidised in situ with oxygen gas to yield dimesna. Higher alkane homologues and analogous phosphonates are prepared similarly. When preparing a phosphonate analogue a haloalkanephosphonate is an alternative starting compound. The C1-4 alkylene chain analogues of these compounds can be prepared similarly.
Patent CA-2264262-A1 (CA)
Inventor: CHABOT BENOIT
IPC: C12Q1/68
Filed: 1999-03-25
Abstract: The present invention relates to the length of telomeres and to their effect on proliferation and senescence in cells. More precisely, it concerns the ability of hnRNP A1 and its shortened derivative UP1 to alter the length of telomeres in cells. The present invention also relates to methods and compositions that will prevent or activate the conversion of A1 into UP1 by proteolytic cleavage as means of increasing or decreasing the proliferative capacity of cells and to delay or precipitate the onset of senescence. In addition the invention relates to agents which can protect mammalian telomeric repeats and modulate telomere replication. Finally, the present invention relates to the use of an enzyme that modifies hnRNP A1 into a substrate more susceptible to proteolytic cleavage.
Patent CA-2264910-A1 (CA)
Inventor: BLEY ULRICH
IPC: C06D5/06
Filed: 1997-07-17
Abstract: The invention pertains to propellants that have a substantially reduced CO concentration in the gas vapors compared to NC propellants. These propellants contain nitroaminoguanidines as main component, explosives as additives and oxidising agents.
Patent CA-2265359-A1 (CA)
Title: Self-propelled upright vacuum cleaner with offset agitator and motor pivot points
Inventor: SPECHT GLENN E
IPC: A47L5/30
Filed: 1999-03-16
Abstract: A self-propelled vacuum cleaner is provided having an upper handle portion and a carriage pivotally mounted to a lower end of the handle portion for pivotal motion relative the handle portion about a horizontally extending carriage axis. A transmission drivingly connected to at least one drive wheel mounted on the carriage, whereby the at least one drive wheel propels the vacuum cleaner over a floor surface. A nozzle body pivotally mounted to the carriage for pivotal motion relative the carriage about a generally horizontally extending nozzle axis, the nozzle body having a downward facing suction opening. The nozzle axis being generally horizontally offset from the carriage axis.
Patent CA-2267262-A1 (CA)
Title: Method and apparatus for correlating a body with an image of the body
Inventor: AUDETTE MICHEL ALBERT
IPC: G06T7/00
Filed: 1997-09-19
Abstract: The present invention provides a system and process for correlating points on a spatial body to corresponding points on a database body formed from pre-acquired images of the spatial body. The system and process involve matching the spatial points with the corresponding database points using relative positional information between the spatial points and the database points. Symmetric false matches are detected and discarded by fitting the spatial points and database points to a first and second closed body, respectively, and comparing the orientation of the spatial points and the database points projected onto the closed bodies. In a preferred embodiment, the orientations of the spatial points and database points are compared by calculating with respect to a matched spatial point, the longitudinal coordinates of the spatial points neighbouring the matched spatial point and calculating, with respect to the matched database point, the longitudinal coordinates of the database points neighbouring the matched database point, and comparing the difference in longitude between the points. If the difference in longitude of the spatial points corresponds to the difference in longitude of the database points, the match of the matched spatial point to the matched database point will be validated. Otherwise, the match will be considered a symmetric false match and discarded. Once at least three spatial points have been matched to corresponding database points, and the matches have been confirmed not to be false matches, a registration procedure is performed registering the spatial body to the database body by calculating a transformation mapping using the three matched pairs.
Patent CA-2267320-A1 (CA)
Title: Secondary cataract inhibitor
Inventor: MIYATA HIROSHI
IPC: A61K31/196
Filed: 1997-10-09
Abstract: A secondary cataract inhibitor containing as the active ingredient N-(3,4-dimethoxycinnamoyl)-anthranilic acid represented by formula (I) or pharmacologically acceptable salts thereof: efficacious in inhibiting, for example, posterior capsular turbidity after cataractal operation and useful for preventing or curing secondary cataract.
Patent CA-2268090-A1 (CA)
Title: Compositions and methods for preparing porous metal oxides
Inventor: SUN TAO
IPC: C01F17/224
Filed: 1996-10-10
Abstract: The present invention relates to a composition and a method for producing hexagonally-packed mesoporous metal oxides wherein the metal oxide is selected from transition metals and lanthanide metals. The composition includes hexagonally packed metal oxide mesostructures that are resistant to pore collapse upon removal of surfactant and are thermally stable. The composition can include a surfactant complexed with the metal. Also described are methods for producing the hexagonally-packed mesoporous metal oxides. The present invention also relates to compositions and methods for producing porous metal oxides. The compositions include microporous and mesoporous metal oxides that are resistant to pore collapse upon removal of surfactant and are thermally stable. Also described are methods for producing microporous metal oxides.
Patent CA-2269667-A1 (CA)
Title: Hydrocarbon soluble alkylaluminoxane compositions formed by use of non-hydrolytic means
Inventor: SMITH GREGORY M
IPC: C08F4/619
Filed: 1997-10-09
Abstract: A hydrocarbon-soluble alkylaluminoxane composition, such as, methylaluminoxane or even a modified methylaluminoxane, can be prepared by preparing an alkylaluminoxane precursor via non-hydrolytic means, such as, by treating at least one trialkylaluminum compound with a compound containing an oxygen-carbon bond, adding to that precursor an effective amount of an organoaluminum compound which prevents formation of insoluble species, such as, a trialkylaluminum compound where each alkyl group contains two or more carbon atoms, and converting that modified precursor to an alkylaluminoxane, such as, by thermolysis. In a distinct embodiment of the invention, if an insoluble methylaluminoxane product is formed using the non-hydrolytic technique, it can be solubilized by treatment with a solubilizing amount of an alkylaluminoxane, prepared by either hydrolytic or non-hydrolytic means, wherein the alkyl moieties contain two or more carbon atoms. These aluminoxane products show high solubility in aliphatic hydrocarbons and improved thermal stability in aromatic hydrocarbons.
Patent CA-2270568-A1 (CA)
Inventor: SAHADEVAN VELAYUDHAN
IPC: A61N5/10
Filed: 1996-09-12
Abstract: On vérifie la préparation et le traitement du patient en vue d'une radiothérapie au moyen de dispositifs d'imagerie diagnostique (7) qui sont reliés à une cabine (3) où se trouve une machine de radiothérapie (1) utilisant une tension de l'ordre du mégavolt. Les cabines de diagnostic (6) et la cabine radiothérapie (3) sous tension de l'ordre du mégavolt sont reliées l'une à l'autre par des ouvertures (5) ménagées dans la paroi secondaire commune de la salle de l'accélérateur ou par une antichambre (109) à la cabine radiothérapie à tension de l'ordre du mégavolt. La préparation quotidienne du patient pour une radiothérapie traditionnelle tridimensionnelle, de routine et une vérification des fenêtres d'irradiation en ligne par isodose en coïncidence sont effectuées lorsque le patient se trouve sur la table (8) d'imagerie diagnostique. Les patients sont transférés de la table (8) d'imagerie diagnostique à la table (2) de traitement sans qu'on change leur position de traitement vérifiée. La préparation patient dans les cabines diagnostic (6) est compensée par une rotation rapide des patients dans la cabine de traitement (3). Les dispositifs de diagnostic sont également utilisés pour l'imagerie diagnostique courante.
Patent CA-2271160-A1 (CA)
Title: Dispositif de controle d'appareil d'orthodontie
Inventor: LOWE ALAN ARTHUR
IPC: A61C7/00
Filed: 1997-11-06
Abstract: Un dispositif à faible consommation d'énergie et servant à contrôler la durée d'utilisation d'un appareil, comprend une unité de commande et un capteur thermique activé par ladite unité à des intervalles de temps de X minutes pour déterminer la température du capteur. La température détectée est ensuite comparée avec une température de seuil, et un compteur est mis en marche pour chronométrer la durée si la température détectée se situe au niveau désiré, ou placé en position d'arrêt si la température détectée ne se situe pas dans la plage souhaitée. Le compteur reste dans la position de marche ou d'arrêt dans laquelle il se trouve jusqu'à ce que la température détectée le fasse basculer dans la position opposée. Le compteur reçoit des oscillations d'un oscillateur fonctionnant en continu et n'enregistre ces oscillations que lorsque le compteur est mis en position de marche.
Patent CA-2271224-A1 (CA)
Inventor: WEIS DAVID W
IPC: G06F9/44
Filed: 1999-05-07
Abstract: An automated banking machine (12) is operative to conduct transactions in response to HTML documents and TCP/IP messages exchanged with a local computer system (14) through an intranet (16), as well as in response to messages exchanged with foreign servers (20, 22, 24, 26, 28, 96) in a wide area network (18). The banking machine includes a computer (34) having an HTML document handling portion (76, 80, 82). The HTML document handling portion is operative to communicate through a proxy server (88), with a home HTTP server (90) in the intranet or the foreign servers in the wide area network. The computer further includes a device application portion (84) which interfaces with the HTML document handling portion and dispatches messages to operate devices (36) in the automated banking machine. The devices include a sheet dispenser mechanism (42) which dispenses currency as well as other transaction devices. The device application portion communicates with a device interfacing software portion (64) in the banking machine through a device server (92) in the intranet. The device server maintains local control over the devices in the banking machine including the sheet dispenser. The banking machine operates to read indicia on the user's card corresponding to a system address. The computer is operative to connect the banking machine to the home or foreign server corresponding to the system address, which connected server operates the banking machine until the completion of transactions by the user.
Patent CA-2274113-A1 (CA)
Title: Herbicidal compositions
Inventor: KIRBY ANDREW FRANCIS
IPC: C11D1/825
Filed: 1997-12-05
Abstract: This invention relates to a herbicidal composition comprising N-phosphonomethylglycine and/or a salt thereof and an alkyldiamine tetraalkoxylate surfactant, a surfactant composition useful in glyphosate compositions and a method for controlling or eradicating unwanted plants or vegetation.
Patent CA-2275128-A1 (CA)
Title: Utility knife
Inventor: WASS STEVE
IPC: B26B5/00
Filed: 1999-06-18
Abstract: The present invention is a hand held utility knife for cutting and trimming materials such as carpet, vinyl, wallpaper and the like. The utility knife comprises a knife body adapted for grasping in a single hand and at least one knife blade mounted proximate a guide end in said knife body and having a cutting direction axis. The guide end includes at least one guide cheek defining a planar surface disposed at an angle theta relative to said knife blade such that said guide cheek is adapted to slidably engage and move parallel along an adjacent planar surface thereby ensuring that the blade cuts material at a uniform and preselected angle. The guide cheek ensures said knife cuts in a uniform angular relationship relative to an adjacent planar surface such that the guide means minimizes rotation of the knife body about the cutting direction axis.