baber/WOPTO huggingface dataset:
Patent CA-2200970-A1 (CA)
Title: A coupling element for a constructional building set
Inventor: POULSEN OLE VESTERGAARD
IPC: A63H33/08
Filed: 1995-09-28
Abstract: A coupling element for releasable retention of an end of an elongate pull element has a cavity to receive said end. The pull element is formed with a constriction and the coupling element with a corresponding cavity.      The pull element may be inserted unobstructedly and subsequently be locked by moving a movable portion, e.g. in the form of a hinged portion, into a locking position in which, in combination with the cavity, it establishes releasable locking of the pull element.
Patent CA-2202003-A1 (CA)
Title: Method for production of soi substrate by pasting and soi substrate
Inventor: SAKAGUCHI KIYOFUMI
IPC: H01L21/20
Filed: 1997-04-07
Abstract: This invention solves the problem of a pasted SOI substrate generating voids in the peripheral part thereof and consequently decreasing the number of devices to be derived therefrom.    It concerns a method for the production of a SOI substrate obtained by pasting a first Si substrate possessing a SiO2 surface and a second substrate possessing a Si surface on the SiO2 surface and the Si surface, which method comprises washing the Si surface of the second Si substrate thereby imparting hydrophobicity to the Si surface before the first Si substrate and the second Si substrate are pasted together.
Patent CA-2202424-A1 (CA)
Title: A tethered polymer macromolecule-excluding surface, its mode of         synthesis and use
IPC: A61L33/00
Filed: 1997-04-11
Abstract: The present invention relates to a high density tethered polymer surface material comprising two regions: (1) a polymer shell characterized by an optimal surface concentration of aldehyde, hydroxyl or sulfhydryl groups; and (2) polymer chains tethered to the shell via the surface groups. The chains function to exclude biomolecules and polymers from approaching the polymer core, thereby minimizing adsorption of such molecules to the surface material. The method of synthesizing this surface involves initiating polymerization of the surface polymer chains from the surface groups using CeIV, which optimizes the density of chains tethered to the surface. The surface concentration of aldehyde or hydroxyl groups determines the chain density, and the composition of the copolymer constituting the shell determines the surface concentration of the aldehyde or hydroxyl groups. If the polymer shell is coated onto a core particle, this surface has use as a size exclusion medium for chromatography. When coated onto other structures, this surface has application as a biocompatible material, because of the resulting exclusion qualities of the relatively high polymer chain density.
Patent CA-2204117-A1 (CA)
Inventor: SYMONS MICHAEL WINDSOR
IPC: C08H8/00
Filed: 1995-10-31
Abstract: A method of preparing particles of an exfoliated vermiculite for the manufacture of a finished product, such as a particle board, includes the steps of, if necessary, chemically modifying the vermiculite by impregnating the vermiculite with a suitable anhydride in a non-aqueous solvent; if necessary, applying to the particles of vermiculite an adhesion promoter to promote the adherence of a resin to the surfaces of the particles of vermiculite; and resinating the particles of vermiculite either with a thermoplastic resin which has been surface modified by irradiation or by fluorination, or by an isocyanate thermosetting resin, or by a dry powder novolac thermosetting resin; and if necessary removing any solvent present.
Patent CA-2207434-A1 (CA)
Title: On-press removable overcoat for lithographic printing plates
Inventor: HANLON JOSEPH
IPC: B41N3/03
Filed: 1996-04-19
Abstract: The present invention provides an overcoat useful for application onto a lithographic printing plate, the overcoat having incorporated therein a water or fountain soluble or dispersible crystalline compound. The overcoat may be used as an oxygen barrier and/or to provide a non-tacky surface on the printing plate. By the incorporation of the crystalline compound, on-press removability of the overcoat is facilitated.
Patent CA-2209384-A1 (CA)
Inventor: NAVARRO WILLIAM
IPC: G10L25/93
Filed: 1996-01-03
Abstract: A method comprising the steps of performing a linear prediction analysis of a speech signal (S) digitised in a series of frames divided into sub-frames, in order to determine the parameters of a short-term synthesis filter; carrying out an open loop analysis to detect voiced signal frames and determine, for each voiced frame, a degree of signal voicing (MV) and a long-term prediction delay search interval containing a number of delays depending on the degree of voicing; carrying out a closed-loop predictive analysis of the speech signal to select, for at least some sub-frames of the voiced frames, a long-term prediction delay contained in the search interval and constituting a long-term synthesis filter parameter; and determining a stochastic excitation for each sub-frame, to minimise a perceptually weighted deviation between the speech signal and the stochastic excitation filtered by the long-term and short-term synthesis filters.
Patent CA-2210537-A1 (CA)
Title: Method of constructing fully dense metal molds and parts
Inventor: TOBIN JAMES ROBERT
IPC: B29C45/26
Filed: 1996-01-05
Abstract: A method of constructing a fully dense metal part or a metal mold half for mating with another mold half to form a mold for casting multiple parts. Steps include placing a pattern in a tubular mold base, casting a ceramic member onto critical surfaces of the pattern, removing the pattern from the mold base, covering the critical surfaces transferred to the ceramic member with a powdered metal having a melting temperature greater than that of an infiltration metal, placing a quantity of an infiltration metal over the powdered metal, placing the tubular mold base in a furnace at a temperature sufficient to melt the infiltration metal without melting the powdered metal, and removing the ceramic member from the first open end of the tubular mold base to expose the critical surfaces. The quantity of the infiltration metal is sufficient to fill voids between the particles of the powdered metal when the infiltration metal is melted, thereby generating a fully dense metal part. The metal part has the critical surfaces transferred from the ceramic member when the infiltration metal solidifies. The metal powder also acts as a filter to filter out any contamination or oxidized metal within the infiltration metal so that such contamination does not blemish the finished surface of the fully dense metal part.
Patent CA-2210759-A1 (CA)
Title: Non-nucleotide phosphorus ester oligomers
Inventor: GENTLES ROBERT GERARD
IPC: C07F9/572
Filed: 1996-01-03
Abstract: A phosphorus ester oligomer having structure (I) wherein A can be the same or different in each monomeric unit and each is independently selected from the group consisting of oxygen, sulfur, lower alkyl, alkyl- or aryl-substituted amino and aminoalkyl; B1 and B2 can be the same or different and each is independently selected from hydrogen, lower alkyl, a labelling group, a protecting group, a phosphoramidate or a phosphomonoester; R1 can be the same or different in each monomeric unit, and in at least one of the non-nucleotide monomeric units, R1 is independently selected from the group consisting of a condensation product of (i) a non-vicinal diol attached to a hydrogen bond donor functionality; (ii) a hydrogen bond acceptor selected from an ether, a purine or pyrimidine substituted 1,2-diol or a disubstituted heterocycle; (iii) a non-vicinal diol attached to a hydrophobic functionality or a vicinal diol attached to an aliphatic or alicyclic hydrophobic functionality; (iv) a diol attached to a ring substituted anionic functionality and (v) a cationic moiety attached to a non-vicinal or alicyclic diol, any of which can further include a detectable label, and n is at least one. Preferred R1 moieties include condensation products of heterocyclic diols, alicyclic diols, and polycyclic diols. Also the non-nucleotide monomers thereof, combinatorial library mixtures of the oligomers and the use of the oligomers as selective target-binding compounds.
Patent CA-2215212-A1 (CA)
Title: Improved heating and air conditioning systems incorporating solid-vapor sorption reactors capable of high reaction rates
Inventor: ROCKENFELLER UWE
IPC: C09K5/04
Filed: 1996-01-31
Abstract: A heating system incorporates one or more reactors (10, 30, 40, 50, 66, 68) containing a complex compound of a metal salt and a polar gas adsorbed thereon in which the volumetric expansion of the complex compound is restricted during adsorption and which reactors (10, 30, 40, 50, 66, 68) comprise one or more reaction chambers having a maximum mean mass diffusion path length of less than 15 mm, and/or a maximum thermal diffusion path length of less than 1.5 mm, means (18, 72) for heating the complex compound in the reactors (10, 30, 40, 50, 66, 68), a condenser (12, 32), an evaporator (14, 34) and conduit means (11, 17, 21, 22, 23, 24, 26, 31, 33, 39, 47, 52, 53, 54, 60, 81) for directing polar gas from the reactors (10, 30, 40, 50, 66, 68) to the condenser (12, 32), from the condenser (12, 32) to the evaporator (14, 34) respectively through the reactors (10, 30, 40, 50, 66, 68) for cooling them and from the evaporator (14, 34) to the reactors (10, 30, 40, 50, 66, 68).
Patent CA-2215302-A1 (CA)
Title: A process for making a lightweight, cementitious, three-dimensional structure
Inventor: MORAN OSVALDO
IPC: C04B28/04
Filed: 1996-03-13
Abstract: A process of making a light weight, cementitious, three-dimensional structure such as a building panel which includes the steps of measuring a quantity of water, measuring about 425 kilograms of cement, and between approximately 40 to 60 grams of ferric chloride in 40 % solution by volume per approximately 278 liters of said water, mixing said quantity of water, said cement and said ferric chloride, measuring between approximately .620 kilograms and 1 347 kilograms of substantially pure powdered aluminum, between approximately .230 kilograms and .710 kilograms of Hexafluorosilicate, between approximately .560 and .680 kilograms of calcium formate, and between approximately 4 and 8 kilograms of fiber, per approximately 278 liters of said water, combining said mixture of said cement, said ferric chloride and said water with said powdered aluminum, said Hexaflurosilicate, said calcium formate and said fiber, mixing said combination, waiting until said mixed combination rises, and forming the lightweight, cementitious, three-dimensional structure.
Patent CA-2216852-A1 (CA)
Title: Soluble espresso coffee
Inventor: TUREK EVAN JOEL
IPC: A23F5/34
Filed: 1997-09-26
Abstract: The present invention is directed to a process for making a soluble espresso coffee powder with improved in- cup foam comprising the steps of: (1) foaming the coffee extract by gas injection; (2) homogenizing the foamed extract of step(1) to reduce gas bubble size to five microns or less; and (3) spray drying the homogenized extract of step (2) under drier outlet temperature and spray pressure conditions effective to produce a soluble espresso coffee powder wherein a majority of void space in the soluble espresso powder is comprised of gas bubbles having a size of 10 microns or less. The resulting soluble espresso coffee powder, upon reconstitution with hot water, produces a foam which simulates the foam formed on espresso made from roasted and ground espresso coffee.
Patent CA-2219613-A1 (CA)
Title: Crystalline form of the doxazosin mesylate and process for its production
Inventor: CARRARA CRISTINA
IPC: C07D405/12
Filed: 1997-10-29
Abstract: The invention refers to a crystalline form of the doxazosin mesylate and to a process for its production by hot treating with methanesulfonic acid doxazosin suspended in a solvent selected from the alcohols, straight or branched, from C1 to C6, the esters of the aliphatic carboxylic acids from C1 to C8 with the alcohols, straight or branched, from C1 to C8, the aliphatic ketones from C3 to C8 and mixtures thereof.
Patent CA-2220878-A1 (CA)
Inventor: SINES RANDY D
IPC: A63F1/18
Filed: 1995-10-13
Abstract: Un système (10, 200, 400, 600) utilisant des cartes pour jouer au blackjack ou similaire présente une pluralité de compteurs de jeu (40, 510, 540) qui comptent les donnes de blackjack ou d'autres événements tels que les cagnottes attribuées aux joueurs. Le système comprend également au moins un compteur de distribution (40, 510, 540) qui compte le nombre de donnes éliminatoires ou de donnes émises par le distributeur et donnant droit à l'attribution de la cagnotte. Des affichages (22, 202, 203, 451-456) sont prévus aussi bien pour le distributeur que pour les joueurs, afin d'indiquer les comptes. Les compteurs sont normalement remis à zéro à la fin de chaque donne si la cagnotte n'a pas été attribuée. Les cagnottes sont attribuées quand le comptage dépasse un seuil prédéfini. On décrit un système (205, 405) selon l'invention qui peut être monté sur une table de blackjack existante. On peut utiliser un tour de jeu spécial avec des règles modifiées, comme partie de la récompense attribuée avec la cagnotte.
Patent CA-2224969-A1 (CA)
Title: Temperature control device of an optical semiconductor device
Inventor: EMA TAKAYUKI
IPC: G05D23/24
Filed: 1997-12-16
Abstract: A temperature control device of an optical semiconductor device is provided for keeping the optical semiconductor device constant. An optical semiconductor device (1) is fixed to a thermal conductor (2). One thermistor (11a) is arranged on the thermal conductor (2) at the portion where it is susceptible stronger to an ambient temperature rather than the optical semiconductor device (1) is susceptible to the ambient temperature while another thermistor (11b) is arranged on the thermal conductor (2) at the portion where it is susceptible weaker to the ambient temperature rather than the optical semiconductor device (1) is susceptible to the ambient temperature. The difference between an average temperature of the thermal conductor (2) at two points detected by the thermistors (11a and 11b) and a set temperature is detected by a temperature detecting means (3) comprising a bridge circuit (30) having the thermistors (11a and 11b) which are connected to each other so as to form opposing sides of the bridge circuit (30) and a differential amplifier (31) for receiving an imbalanced voltage of the bridge circuit (30). The thus detected difference of the temperature is outputted to a temperature control circuit (4), whereby the temperature control circuit (4) controls a Peltier driving current of a Peltier element (5) so that the average temperature of the thermal conductor (2) at two points thereof and the set temperature become equal to each other.
Patent CA-2225172-A1 (CA)
Inventor: LETTON JAMES CAREY
IPC: C07C233/47
Filed: 1996-05-29
Abstract: Chemical synthesis of N-acyl-N-alkylcarboxylates through oxidation of substituted amides formed from carboxylic acid esters and an N-alkyl-N-alkanolamine.
Patent CA-2226935-A1 (CA)
Title: A wiper blade and a method of manufacturing a wiper blade
Inventor: JANDIN PATRICE
IPC: B60S1/38
Filed: 1996-09-10
Abstract: A wiper blade, for example for a windscreen wiper device for a vehicle, comprising a metal yoke which is attached to a metal carrier in such manner as to be capable of pivoting movement about a pivot axis, with the interposition of a joint part of plastic material, which is stationary with respect to said carrier, whereby both said carrier and said yoke have a substantially U-shaped cross section at the location of their interconnection, and whereby said yoke is positioned substantially within said carrier, with the interposition of said joint part, whereby said yoke is in each leg of said U-shaped cross section provided with a protrusion at the location of said pivot axis, which protrusion pivotally engages in said joint part.
Patent CA-2227108-A1 (CA)
Title: Footwear with mountain goat traction elements
Inventor: RASK MATTHEW NAJEEB
IPC: A43B13/26
Filed: 1998-01-16
Abstract: Footwear intended primarily for outdoor use, wherein a variety of ground conditions are likely to be encountered, has a sole with traction elements inspired by the hoof of a mountain goat. In several embodiments, an interior region of the sole is provided with a plurality of pairs of relatively soft protruding pods, while a perimetric region surrounding the interior region includes a plurality of relatively hard lugs provided on opposite sides of the pod pairs. The pods extend downwardly below the lugs such that they will make initial ground contact and compress. The compression cushions initial impact and increases the area of ground contact to improve traction on firm smooth surfaces.  The compression also brings the lugs into ground engagement, following initial contact, to improve stability and traction on irregular and soft ground surfaces. Other embodiments of the invention implement similar principles, in soles having a more conventional (less goat hoof-like) appearance. In one embodiment, relatively soft rubber outsole lugs take the place of the pods. In another embodiment, the sole includes combination lugs including relatively hard and soft portions of differing height. In a further embodiment, an interior region of a water sandal sole includes relatively soft traction elements in the form of relatively large soft regions of the midsole covered with a thin layer of rubber outsole material; the interior region is surrounded by a perimeter of hard lugs.
Patent CA-2228210-A1 (CA)
Inventor: BALABINE IGOR V
IPC: G06F17/30
Filed: 1998-01-29
Abstract: Information in a database is accessed with a computer system by transforming a file system request from an application into a database query and retrieving information corresponding to the database query from the database. The retrieved information is made available to the application as a file system object, for example, as a directory, a file, a link or a collection thereof.
Patent CA-2229565-A1 (CA)
Title: Mayonnaise base and method for producing it
Inventor: YAMAUCHI TAKASHI
IPC: A23L27/60
Filed: 1997-07-03
Abstract: Disclosed is a mayonnaise base which is mixed with eggs by consumers to give mayonnaise. The mayonnaise base consists indispensably of vegetable oil, vinegar and emulsifier (except egg yolk) along with other seasonings (except vinegar) and spices, and is stored in an oxygen-free container. The mayonnaise base is mixed with fresh eggs by consumers to give mayonnaise with ease. In accordance with the consumers' request, either whole eggs or only egg yolk or albumen can be added to the mayonnaise base.
Patent CA-2231137-A1 (CA)
Title: Optical waveguide fiber containing titania and germania
Inventor: HOAGLIN CHRISTINE L
IPC: G02B6/028
Filed: 1997-06-25
Abstract: Optical waveguide core compositions comprising a core containing two dopants in a silica based glass, wherein one of the dopants is titania. The core composition serves to suppress the presence of Ti+3 and to preserve refractive index profile (10, 12, 14) shape throughout the preform manufacturing process.
Patent CA-2235424-A1 (CA)
Title: Process for the preparation of a magnesium chloride solution by quick lixiviation of asbestos tailings
Inventor: BEERLI ERIC
IPC: C22B7/00
Filed: 1998-05-15
Abstract: A process for the preparation of a magnesium chloride solution by lixiviation of asbestos tailings with an aqueous solution of hydrochloric acid having a concentration of about 20% by weight. In this process, the asbestos tailings used as starting material have a granulometry equal to or lower than 62 mesh; the lixiviation is carried out at a temperature close to the temperature of ebullition of the mixture, this temperature of ebullition ranging between 115 and 120°C; and the lixiviation is carried out with asbestos tailings and hydrochloric acid in such amounts that the stoichiometric ratio tailings/HCl ranges between 1.2 and 2.25. Under the above conditions of operation, the time required to obtain almost entire transformation of the hydrochloric acid into magnesium chloride and other metal chlorides is of about 5 to 15 min. and there is no filtration problem because of the presence of silica gel.
Patent CA-2235429-A1 (CA)
Title: The recovery of cobalt and/or copper from residues containing-same
Inventor: OVERBEEK GERHARD
IPC: C22B23/00
Filed: 1998-04-21
Abstract: A process is provided for the recovery of cobalt and copper from source materials such as white mattes metals or other suitable susceptible materials in which iron is present in significant quantities as well. The sub-divided source material is leached, advantageously at atmospheric pressure using copper sulphate and a small amount of sulphuric acid to dissolve iron and cobalt and cement some copper from solution. The copper residue is calcined to copper oxide which is used to precipitate iron as Goethite from the filtrate and regenerate copper sulphate for recycling to the leach step. Copper and cobalt are recovered from a bleed stream of the regenerated copper sulphate.
Patent CA-2238214-A1 (CA)
Inventor: SLEDD WAYNE
IPC: B42F21/06
Filed: 1998-05-22
Abstract: The tab marking system employs a first ply of paper having discrete tabs removably mounted therein and a second ply of paper under the first ply of paper to cover the discrete tabs. Each tab is provided with a self-adhesive repositionable glue. Upon removal of a tab from the first ply of paper, the tab can be adhered to a page of a catalogue to flag the page. A barrier coating may also be placed on the second ply of paper in facing relation to the glue of the tabs to prevent adhesion of the tab to the second ply of paper.
Patent CA-2241450-A1 (CA)
Title: Rear drive ride-on tractor unit for propelling steerable utility vehicles such as walk-behind paint stripers
Inventor: NEULING WILLIAM V
IPC: B62D59/04
Filed: 1997-02-10
Abstract: Improved paint striper control, speed and quality is achieved by articulating a motor driven push tractor unit (15) to a steerable walk-behind paint striping unit (40). In a preferred embodiment, a two-wheeled rear push tractor unit (50) supporting a drive motor (58) and driver's seat (26) is coupled through a quick release ball-socket pivot joint behind a three-wheeled handlebar steered push-to-paint manual striping unit (40). The articulation joint with help of a hydrostatic trans-axle transmission in the tractor unit produces a sharp turning eighty degree radius. Also the transmission unit functions to drive the assembly in straight lines. The user controls steering to deviate from a straight line at the handlebar grips in substantially the same manner as if walking behind the paint striper. Thus the user rides quickly along the striping path with a good view at the paint spray jets to monitor performance and achieve higher output volume and quality.
Patent CA-2243971-A1 (CA)
Title: Nettoyage de matiere ayant subi une contamination radioactive
Inventor: GREENWO HOWARD
IPC: G21F9/28
Filed: 1997-01-29
Abstract: On nettoie une matière ayant subi une contamination radioactive en la plaçant dans un réceptacle perméable tel qu'un sac, et en insérant ce réceptacle dans une cuve rotative ajourée. La matière est ensuite soumise dans la cuve rotative à un cycle de lessivage avec de l'acide nitrique, et un cycle de lavage avec de l'eau neuve. De préférence, on effectue au moins un autre cycle de lavage. Après évacuation du liquide de lavage, la matière est soumis à une opération de centrifugation. La matière subissant le nettoyage est un milieu de filtration qui est constitué d'un composant de verre.