baber/WOPTO huggingface dataset:
Patent CA-2222346-A1 (CA)
Title: A system for embedding authentication information into an image and an image alteration detecting system
Inventor: NUMAO MASAYUKI
IPC: H04N21/4405
Filed: 1997-11-27
Abstract: The invention provides a digital camera which embeds authentication information for detecting the identity of a photographed image into the image. By supplying the authentication information integrally with image data, the verifier is enabled t o verify the image data without saving the authentication information. By converting the ligh t inputted through an optical system 21 to an electric signal, a CCD 22 outputs an analog s ignal of an image. A signal processor 23 generates a digital signal of the image is respo nse to the analog signal. A digital camera has: a region dividing unit 24 for dividing the image into a first image region and a second image region in response to the digital signal ; authentication information generator 29 for generating authentication informatio n from data in the first image region; encryptor 30 for encrypting the authentication inform ation; hiding means 25 for embedding the encrypted authentication information into the second image region by operating the data in the second image region; and region combining me ans 26 for combining the first image region in the image with the second image region i n which the authentication information is embedded.
Patent CA-2222890-A1 (CA)
Inventor: BUI-TRAN VAN
IPC: G08C15/00
Filed: 1997-12-18
Abstract: - L'invention concerne une méthode de transmission en cieux temps à une station centrale des signaux sismiques reçus par des récepteurs sismiques et acquises par des unités de collecte disposées sur le terrain. - Dans un premier temps, on applique à chaque trace sismique une compression dont le taux est adapté à la durée d'une fenêtre de transmission que l'on place durant des intervalles de temps entre des cycles successifs d'émission-réception sismique. ainsi qu'au débit de la voie de transmission utilisée. La trace toute entière est ainsi transmise ce qui permet à un opérateur à la station centrale de vérifier que l'enregistrement s'effectue correctement dans chaque unité de collecte. Dans un deuxième ternes, à la fin de la session sismique en cours par exemple, les traces sismiques sont reconstituées dans la station centrale avec toute la précision nécessaire, par transmission des résidus éliminés dans le premier temps pour les besoins de la première transmission. - Application à la prospection sismique à grande échelle.
Patent CA-2224328-A1 (CA)
Inventor: WEINHOLDT MICHAEL
IPC: A63B37/00
Filed: 1997-04-18
Abstract: L'invention concerne une balle de golf conçue en plusieurs parties, comprenant une partie centrale (1), une enveloppe (2) et une coque (3). Cette balle répond aux exigences de longues distances et permet des effets suffisants, même lorsque la partie centrale (1) n'est pas ou est extrêmement peu déformable. Cette partie centrale (1) est constituée à cet effet d'un matériau peu déformable possédant une très grande élasticité énergétique et présentant un module d'élasticité à température ambiante ? 3 GPa; l'enveloppe (2) est réalisée dans un élastomère fortement déformable possédant une très grande élasticité entropique et présentant un module d'élasticité à température ambiante ? 50 MPa, une température de transition vitreuse ? 0· Celsius et un facteur de perte mécanique tan .delta. ? 0,2 dans une plage de fréquences allant jusqu'à 1 kHz à température ambiante. Cette enveloppe (2) présente une épaisseur de couche ? 2 mm.
Patent CA-2226683-A1 (CA)
Title: Isolation of clavulanic acid from fermentation broth by ultrafiltration
Inventor: CAPUDER EGIDIJ
IPC: A61K31/00
Filed: 1996-08-27
Abstract: A process for preparation and/or purification of clavulanic acid or a pharmaceutically acceptable salt or ester thereof comprising the steps of removing solids from a clavulanic acid containing fermentation broth by microfiltration to form a first filtrate, further removing solids from the first filtrage by ultrafiltration to form a second filtrate, concentrating the second filtrate by removal of water, and treating the concentrated second filtrate to isolate clavulanic acid or a pharmaceutically acceptable salt or ester thereof, characterised in that the first filtrate is filtered using an ultrafiltration membrane having a molecular weight cut-off of 10 to 30 kD and a permeate flow rate of 10 to 30 lm-2 h-1.
Patent CA-2226987-A1 (CA)
Inventor: HATTON HOWARD LYNN
IPC: E04B1/76
Filed: 1998-01-14
Abstract: A plurality of insulating panels for installation between and insulation of the metal furrings of a wall system. Preferred panels have a plastic foam core. The vertical side edges of the panels are provided with kerfs for enclosure of the metal furrings and reduction of the thermal bridging conventionally caused by the furrings.
Patent CA-2227008-A1 (CA)
Title: Compact low pressure discharge lamp
Inventor: WITTMANN HORST
IPC: H01J61/56
Filed: 1998-01-15
Abstract: The invention relates to a compact low-pressure discharge lamp comprising a discharge vessel 14 having electrodes and supply leads 30, and having a lamp cap 12 assembled from a cap 16, housing 18 and mounting plate 24 with a ballast arrangement. In this case, the mounting plate 24 with the ballast arrangement 32 is fitted in the interior of the lamp cap housing 18. The mounting plate 24 also has terminals 26 for the electric connection of the supply leads 30. According to the invention, in this case the supply leads 30 are connected to the electric terminals 26 of the mounting plate 24 via or by means of an electrically conducting helical or spiral spring 28 in each case.
Patent CA-2229181-A1 (CA)
Title: Contrawound toroidal helical antenna
Inventor: VANVOORHIES KURT L
IPC: H01Q11/08
Filed: 1996-08-14
Abstract: An electrically small antenna is disclosed that is constructed from a generalized contrawound toroidal helix (1, 2) made from a single continuous conductor divided into two length portions each of which are substantially the same length and which have a generalized helical pattern. The helical pitch senses the two length portions are opposite to one another. The two length portions are insulated from one another and overlap one another on the surface of a generalized toroid. A signal is fed to the antenna at a port defined by the node locations (N1, N2) where the respective length portions join one another, or at a diametrically opposite point. A compact, broadband embodiment of the antenna is disclosed, as are other applications including a coaxial cavity resonator using the antenna as a feed element.
Patent CA-2229308-A1 (CA)
Title: Fungicidal mixtures of epoxiconazole and chlorothalonil
Inventor: SAUR REINHOLD
IPC: A01N43/653
Filed: 1996-09-04
Abstract: A fungicide mixture contains synergistically effective amounts of (a) (2RS,3SR)-1-[3-(2-chlorophenyl)-2, 3-epoxy--2-(4-fluorophenyl)propyl]-1H-1,2,4-triazol having formula (I), one of its salts or addition products, and of (b) tetrachlorisophthalonitril having formula (II). Also disclosed is its use for controlling harmful fungi.
Patent CA-2229904-A1 (CA)
Title: In-home wireless
Inventor: MOULTON GRANT E
IPC: H04L12/66
Filed: 1998-02-18
Abstract: In a residential environment with more than one analog television set a residential gateway has a network interface module which receives signals from a telecommunications network. The signals contain compressed digital video information which is routed within the gateway to a video module for the generation of an analog video signal for a television set located near the residential gateway, and to a wireless module for transmission to a remote receiver using spread spectrum communications.
Patent CA-2230192-A1 (CA)
Title: Charger for dry galvanic cells using asymmetrical current
Inventor: NIKOLAYEV ANATOLIY G
IPC: H02J7/02
Filed: 1995-09-08
Abstract: An improved charging circuit apparatus for charging both "rechargeable" and "non-rechargeable" batteries from an AC power source utilizing capacitors (3 and 5) and two diodes (6 and 7). The anode of the first diode (6) is connected to a first output terminal (10) and a first input terminal (1); the first diode's cathode being connected to the anode of the second diode (7), the cathode of the second diode being connected to a second output terminal (11).  The capacitors are connected to the second input terminal (2). One capacitor (3) is further connected to the cathode of the first diode (6) and therefore anode of the second diode (7). A second capacitor (5) is further connected to the second output terminal (11). A current limiting circuit (37) is also provided which is connected to the charging circuit to provide protection against overcharging of the batteries.
Patent CA-2230530-A1 (CA)
Title: Biomaterials for preventing post-surgical adhesions comprised of hyaluronic acid derivatives
Inventor: PRESSATO DANIELE
IPC: A61L31/06
Filed: 1996-08-29
Abstract: New biomaterials essentially constituted by esterified derivatives of hyaluronic acid or by cross-linked derivatives of hyaluronic acid for use in the surgical sector, particularly for use in the prevention of post-surgical adhesions.
Patent CA-2235663-A1 (CA)
Title: Trocar having protector with flexible end and improved seal assembly
Inventor: KELLY WILLIAM D
IPC: A61B17/34
Filed: 1998-04-23
Abstract: A surgical trocar has a cannula assembly including a sleeve having a proximal end, a distal end and a passageway therethrough. A housing having an opening is located at the proximal end of the sleeve and is aligned with the passageway of the sleeve. The trocar also includes an obturator assembly which is insertable in the cannula assembly. The obturator assembly includes a handle and an obturator shaft. The obturator shaft has a proximal end connected to the handle and a distal end opposite the proximal end. A penetrating tip is located at the shaft distal end for penetrating tissue. A protector having a distal end is slidably disposed around the obturator shaft for covering the penetrating tip. The protector has an aperture at its distal end for permitting the penetrating tip to pass therethrough. The protector also includes a flexible proximal end movable against the obturator handle to expose the penetrating tip when a proximal force is asserted against the protector. A seal assembly is located in the housing for sealing against the obturator assembly or surgical instruments passed through the cannula assembly. The seal assembly includes an upper seal arrangement having an aperature. The seal assembly also includes a pressure seal located beneath the upper seal arrangement. The pressure seal includes a pair of side walls. At least one rib is located on the inner surface of each side wall.
Patent CA-2236120-A1 (CA)
Title: Point-of-purchase coupon dispenser
Inventor: EMOFF MICHAEL J
IPC: B65D83/12
Filed: 1996-08-12
Abstract: A pop-up coupon dispenser for sheets which have a repositionable adhe-sive and a flexible cable tie. The dis-penser includes a box (32) filled with sheets (38) having an adhesive stripe along one margin and stacked in accor-dion fashion (36). The box (32) may be attached to a wire rack (60) or to a gro-cery shelf (67) by use of a cable tie (44).  The box (32) may also be provided with a shelf clip (102). Customers can remove a coupon sheet (38) one-at-a-time and af-fix them by their adhesive backing to the product for which a coupon (38) is re-deemable.
Patent CA-2237171-A1 (CA)
Inventor: TACKABERRY PATRICK DONALD
IPC: C22B3/06
Filed: 1996-07-19
Abstract: Procédé permettant d'augmenter la teneur en or de l'or métallique, consistant à mettre la composition d'or métallique en contact avec une liqueur lixiviante. La liqueur lixiviante est adaptée pour dissoudre les impuretés de la composition d'or métallique sans dissoudre en quantité significative l'or. De préférence, la liqueur lixiviante est une solution présentant une constante de dissociation fortement acide, un potentiel d'oxydation élevé et une forte tendance à la complexion des cations. Le procédé décrit consiste de préférence à griller l'or en atmosphère oxydante ou à l'atomiser avec lixiviation. La composition d'or métallique peut être grillée et lixiviée à plusieurs reprises jusqu'à obtention de la pureté d'or voulue.
Patent CA-2237232-A1 (CA)
Title: Method of preparing an improved zeolite coating
Inventor: PETCH MICHAEL IAN
IPC: B01D71/02
Filed: 1998-05-08
Abstract: A substantially complete coating of a zeolite onto a material such as catalyst particles can be achieved by treating the material prior to or simultaneously with zeolite formation, with a polyelectrolyte. Copper catalyst systems show good hydrogen storage whilst blocking access of hydrocarbons to the catalyst.
Patent CA-2237754-A1 (CA)
Title: Powder coating booth
Inventor: YAMASHITA YUKIHIDE
IPC: B05B15/12
Filed: 1998-05-15
Abstract: A powder coating blooth for performing therein powder coating onto an article to be coated is divided into an automatic coating zone in which coating is performed only by automatic coating machines and manual coating zones in which coating is performed by a worker.  A dry type of first recovering apparatus which recovers only that powder coating material in the automatic coating zone which has not been coated onto the article to be coated is provided separately from a second recovering apparatus which recovers that powder coating material in the manual coating zones which has not been coated onto the article to be coated.  In this manner, the ratio of reusing the recovered uncoated powder coating material is improved.
Patent CA-2239763-A1 (CA)
Inventor: SAGE JEAN-MARC
IPC: C07C23/06
Filed: 1998-06-17
Abstract: Pour fabriquer du pentafluoroéthane (F125) et/ou du 1,1,1,2,3,3,3-heptafluoropropane (F227ea), on soumet un courant gazeux de trifluorométahne à une pyrolyse, puis on met le mélange de gaz issus de cette pyrolyse en contact avec un catalyseur de fluoration. Ce procédé permet de fabriquer plusieurs HFC de propriétés physiques différentes à partir d'un même produit de départ, sans conduire à la formation de sous-produits et impuretés chlorés du type HCFC ou CFC ou encore d'acide chlohydrique.
Patent CA-2241874-A1 (CA)
Title: Pixel splitting to improve bar code readability
Inventor: SANSONE RONALD P
IPC: B41J3/01
Filed: 1998-06-29
Abstract: An apparatus and method for removing fractions of a pixel from bar code bars to maintain the correct distance between adjacent correctly sized code forming bars. Thus, the distance between adjacent code forming bars will be constant and accurate. The foregoing is accomplished by varying a parameter of the beam or ink droplet that is used to produce the bar so that the bar width and space between adjacent code forming bars will be accurately maintained. Hence, bars of a bar code will be accurately reproduced to enable the bar code to be accurately read.
Patent CA-2242096-A1 (CA)
Title: An outdoor high-voltage power circuit breaker
Inventor: MASCHER KARL
IPC: H01H33/16
Filed: 1996-12-20
Abstract: The invention concerns an open air high-voltage circuit breaker comprising a circuit breaker unit (13) and a control capacitor connected electrically in parallel to it and surrounded by a common composite isolation housing (7, 8) made essentially of plastic, resting a terminal column (1) fixed to one of its ends. The use of a composite isolation housing saves cost and weight at the upper end of the terminal column and also improves earthquake security.
Patent CA-2243537-A1 (CA)
Title: Structure de support des cheveux
Inventor: CONTSTANTINI ENZO
IPC: A45D8/38
Filed: 1997-01-16
Abstract: Une structure de support des cheveux (20, 220, 320, 420, 520) pour coiffer des dames comprend essentiellement une portion de base en forme de boucle (30, 230, 330, 430, 530) comprenant un corps principal allongé mince (32) qui est constitué, de préférence, de fil métallique. Plusieurs nervures (40a-40n, 240a-240n, 340, 440, 540) sont fixées à leurs extrémités inférieures (42, 542) à la portion de base et elles s'étendent vers le haut et généralement vers l'intérieur, de manière à être physiquement liées les unes aux autres près de leurs extrémités supérieures (44, 544) à un élément de renforcement supérieur transversal (50, 250, 350, 450, 550a-550c). Chaque nervure est espacée des nervures adjoignantes par une distance d'au moins un centimètre. Ces nervures ne sont pas fixées sur leur longueur entre leurs extrémités supérieures et leurs extrémités inférieures, ce qui permet de passer facilement les doigts entre elles et d'enrouler les cheveaux autour des nervures. Chaque nervure a une rigidité suffisante pour que la structure de support des cheveux garde sa forme.
Patent CA-2243580-A1 (CA)
Inventor: CHILIBECK RICHARD H
IPC: B01D21/24
Filed: 1998-07-24
Abstract: A separator for separating particles, especially amalgam particles, from effluent liquid obtained from the suction apparatus of a dental office, driven by a common vacuum pump, includes a sedimentary deposit tank for sedimentation of solid particles in the effluent. A surge tank is provided for accommodating backup from the sedimentary deposit tank. An air bypass conduit is connected in parallel with the separator and to a vacuum check valve in the vicinity of the separator inlet port for passing air into the separator when the suction apparatus is closed to ambient air, so that whenever the vacuum pump is operating, air is sucked into the separator either through the suction apparatus thence into the separator inlet port or via the vacuum check valve. The surge tank preferably has a liquid level sensor and associated warning device. An auxiliary filtration device may be connected downstream of the sedimentary deposit tank, and both of these units are preferably removably replaceable as modular units.
Patent CA-2247020-A1 (CA)
Title: Possibly substituted 8-cyano-1-cyclopropyl-7-(2,8-diazabicyclo-[4.3.0]-nonan-8-yl)-6-fluoro-1,4-dihydro-4-oxo-3-quinolin carboxylic acids and their derivatives
Inventor: RAST HANS-GEORG
IPC: C07D471/04
Filed: 1997-02-12
Abstract: The present invention relates to novel optionally substituted 8-cyano-1-cyclo-propyl-7-(2,8-diazabicyclo[4.3.0]nonan-8-yl)-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acids and their derivatives, of the general formula (I) (see formula I) in which R1 represents hydrogen, C1-C4-alkyl which is optionally substituted by hydroxyl, methoxy, amino, methylamino or dimethylamino, or (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl, R2 represents hydrogen, benzyl, C1-C3-alkyl, (5-methyl-2-oxo-1,3-dioxol-4-yl)-methyl, radicals having the structures -CH=CH-COOR3, -CH2CH2COOR3, -CH2CH2CN, -CH2CH2COCH3 or -CH2COCH3, in which R3 represents methyl or ethyl, or a radical of the general structure R4-(NH-CHR5-CO)n-, in which R4 represents hydrogen, C1-C3-alkyl or the radical -COO-tert-butyl, R5 represents hydrogen, C1-C4-alkyl, hydroxyalkyl, aminoalkyl, thioalkyl, carboxyalkyl or benzyl and n is 1 or 2, and Y is oxygen or sulfur, the process for their preparation and their use in antibacterial compositions.
Patent CA-2247498-A1 (CA)
Inventor: BANAY DAN
IPC: H04L12/16
Filed: 1997-02-28
Abstract: An automated communications system operates to transfer data, metadata, and methods from a provider computer (1) to a consumer computer (2) through a communications network (3). The transferred information controls the communictions relationship, including responses by the consumer computer (2), updating of information, and process for future communications. Information which changes in the provider computer (1) is automatically updated in the consumer computer (2) through the communications system (3) in order to maintain continuity of the relationship. Transfer of metadata and methods permits intelligent processing of information by the consumer computer (2) and combined control by the provider and consumer of the types and content of information subsequently transferred.
Patent CA-2248233-A1 (CA)
Inventor: WEISBART RICHARD
IPC: A61K47/48
Filed: 1997-03-07
Abstract: In accordance with the present invention, it has been discovered that a class of anti-dsDNA antibodies, e.g., mAb 3E10, binds membranes of fixed human renal tubular cells, penetrates live murine renal tubular cells in vivo, and localizes in the cell nucleus. mAb 3E10 binds both dsDNA and an extracellular matrix protein expressed in high endothelial venules (i.e., HP8/HEVIN).  Previous studies showed both shared and distinct binding determinants in the variable heavy region of mAb 3E10 for DNA and HP8/HEVIN. To independently assess the requirement of HP8/HEVIN and DNA in cellular penetration, site directed mutants of mAb 3E10 VH and Vk were investigated for the ability to penetrate kidney cell lines. The results showed that residues required for binding DNA but not HP8/HEVIN were necessary for antibody penetration, indicating that cellular penetration required the presence of DNA or binding of antibody to a membrane determinant precisely resembling DNA. Antibody Fab penetrates cells, indicating that neither the Fc nor multivalent antibody binding are necessary for cellular penetration. Antibody synthesized in the cytoplasm as a result of deleting heavy and light chain signal peptides is not translocated to the nucleus, indicating the need for a membrane mediated pathway or for post-translational modifications of the antibody. The present invention demonstrates the usefulness of using molecular mutants and/or functional fragments thereof to study the cellular pathways of autoantibody penetration and nuclear localization.
Patent CA-2249367-A1 (CA)
Inventor: CHEN FU
IPC: C08F2/44
Filed: 1997-05-21
Abstract: L'invention concerne un procédé pour l'élaboration d'une dispersion polymérique hydrosoluble caractérisée par le fait que l'on procède à une polymérisation à partir des éléments suivants: environ de 10 à 50 % en moles d'un monomère de formule (II); environ de 1 à 50 % en moles de N-alkylacrylamide, N,N-dialkylacrylamide , ou de leurs combinaisons, de la formule (III); environ de 1 à 70 % en moles d'acrylamide; et, falcutativement, jusqu'à environ 4 % en moles d'un monomère de la formule (I), possédant un groupement fonctionnel benzyle. La polymérisation est conduite en présence d'une solution aqueuse de sel anionique polyvalent qui contient (1) un polymère cationique hydrosoluble qui est insoluble dans la solution saline aqueuse et (2) un polymère cationique hydrosoluble qui est soluble dans la solution saline aqueuse.
Patent CA-2251720-A1 (CA)
Title: Tape for use in manufacturing electrochromic devices
Inventor: BUDD KENTON D
IPC: B32B17/10
Filed: 1997-03-17
Abstract: A tape (30) that includes an electronically conductive flexible substrate (32), a release layer (42) and an adhesive (40) comprising an ion-intercalating material (36) and electrochromic devices and glazing units prepared using this tape.
Patent CA-2251932-A1 (CA)
Inventor: MUELLER HANNS PETER
IPC: C08L67/00
Filed: 1997-04-07
Abstract: The invention relates to foamed mouldings produced from polymers selected from the group of aliphatic or partially aromatic polyesters, thermoplastic aliphatic or partially aromatic polyester urethanes, aliphatic or aliphatic-aromatic polyester carbonates and aliphatic polyester amides which are mixed with blowing agents and thermoplastically processed. The invention also relates to a process for producing the objects of the invention.
Patent CA-2254183-A1 (CA)
Title: Rotary atomizer with integrated shaping air
Inventor: VAN DER STEUR GUNNAR
IPC: B05B5/04
Filed: 1998-11-20
Abstract: A rotary atomizer has shaping members to generate shaping air without the need for independent sources of shaping air.  The distribution and shape of the shaping members and the selection of rotating speed allows for the selection of virtually any pattern of distribution of atomized material.  The shaping members are positioned to produce an outward flow of air from the rotary atomizer thereby eliminating the need for external sources of shaping air.