baber/WOPTO huggingface dataset:
Patent ES-2195385-T3 (ES)
Title: Procedimiento para la produccion de revestimientos multicapa.
Inventor: SAPPER EKKEHARD
IPC: C09D171/02
Filed: 1998-07-16
Granted: 2003-12-01
Abstract: La invención se refiere a un procedimiento para aplicar revestimientos de multicapas en una superficie de un sustrato, que consta de los siguientes pasos: (1) aplicación de una laca de base acuosa (A) a la superficie del sustrato; (2) formación de una película de polímeros de la laca de base acuosa (A) aplicada en el paso (1); (3) aplicación de una laca de recubrimiento transparente acuosa (B) al revestimiento de laca base obtenido de acuerdo al paso (2); y, finalmente (4) cocción de tanto el revestimiento de laca base como el revestimiento de laca de recubrimiento. La laca base (A) contiene al menos un aglomerante, que contiene un grupo hidroxilo, en una solución o dispersión acuosa, así como una dispersión acuosa estable de resina aminoplástica hidrófoba, producida con un emulsionante que contiene un grupo hidroxilo. La invención también se refiere a sustratos revestidos de acuerdo con el procedimiento inventado.
Patent ES-2177110-T3 (ES)
Title: Articulos abosrbentes.
Inventor: LAVON GARY DEAN
IPC: A61F13/514
Filed: 1998-12-03
Granted: 2002-12-01
Abstract: Un artículo absorbente que comprende: (a) una hoja superior (249): (b) una hoja posterior (247) formada de un material de hoja compuesta (10) sustancialmente impermeable a los líquidos, permeable al vapor de la humedad, que incluye un sustrato fibroso no tejido en telar (14); teniendo dicho sustrato fibroso caras planas opuestas primera y segunda y una película (12) de termoplástico permeable al vapor de la humedad ligada a la primera cara de dicho sustrato fibroso (14); y (c) un núcleo absorbente (275) situado entre dicha hoja superior y dicha hoja posterior, caracterizado porque dicha película (12) permeable al vapor de la humedad tiene un grosor medio de menos de 25 micrómetros, una resistencia al despegue de al menos 0,1 N/cm, una transmisión de fluido dinámica de menos de 0,75 g/m2 al ser sometida a una energía de impacto de 2400 julios/m2, una altura de presión hidrostática de al menos 60 cm, y un régimen de transmisión del vapor de la humedad, de acuerdo con el método del desecante, de al menos 2800 g/m2/hora, y más preferiblemente de al menos 5000 g/m2/hora.
Patent ES-2251795-T3 (ES)
Inventor: RAJANIEMI JAAKKO
IPC: H04W76/30
Filed: 1998-12-10
Granted: 2006-05-01
Abstract: The present invention concerns a network controlling device configured to perform a detach of a terminal (MS) registered to a telecommunication network (NW) by associating an identification (TMSI) for said terminal (MS), deriving a signature (TMSI_SIG) for said identification (TMSI), and allocating a pair consisting of said identification (TMSI) and said signature (TMSI_SIG) to said terminal (MS), said network controlling device comprising: receiving means adapted to receive a detach request (DET_REQ) including said identification (TMSI) and said identification signature (TMSI_SIG) from said registered terminal (MS); comparison means adapted to compare said received detach request (DET_REQ) with a record of registration data of said terminal (MS) kept at the network side; and detaching means adapted to detach said terminal (MS) from said network (NW), if said received detach request (DET_REQ) coincides with said record of registration data. Also, the present invention concerns a correspondingly adapted terminal.
Patent ES-2310020-T3 (ES)
Inventor: DAL LAGO SILVIO
IPC: H02H5/08
Filed: 1999-03-12
Granted: 2008-12-16
Abstract: A Buchholz relay comprising, to be immersed in an oil bath, a supporting frame (25) for magnetic switches (29) for closing circuits which are operated by movable devices (32,33), of which at least one (32) is of the floater type and at least one (33) is of the type with a flap rotatably associated with the frame (25). The flap device, which has a surface which is sensitive to the presence of oil currents, is independent of the floaters (32). <IMAGE>
Patent ES-2177162-T3 (ES)
Title: Procedimiento e instalacion para la preparacion de acido nitrico.
Inventor: MAURER RAINER
IPC: C01B21/28
Filed: 1999-03-13
Granted: 2002-12-01
Abstract: CON UN PROCEDIMIENTO PARA LA OBTENCION DE ACIDO NITRICO SEGUN EL PROCEDIMIENTO DE DOS PRESIONES, EN EL QUE LA COMBUSTION DEL AMONIACO UTILIZADO EN LA PRIMERA PRESION QUE ES BAJA SE REALIZA MEDIANTE AIRE COMPRIMIDO PROCEDENTE DEL PROCESO, Y EN EL QUE LA COMBUSTION DEL GAS NITROSO FORMADO A UNA SEGUNDA PRESION QUE ES MAS ALTA QUE LA PRIMERA, SE ABSORBE AL MENOS PARCIALMENTE CON AGUA, POR LO QUE EL ACIDO NITRICO SE FORMA, Y EL GAS QUE NO HA SIDO ABSORBIDO CON OBJETO DE UNA RECUPERACION DEL TRABAJO DE LA COMPRESION SE DESCOMPRIME EN UN EXPANSOR DE GAS DESDE LA SEGUNDA PRESION A LA PRESION AMBIENTAL; SE DEBE PREPARAR UNA DISOLUCION, CON LA CUAL SE CONSIGA UNA OPTIMIZACION DE LA OBTENCION DEL ACIDO NITRICO, CON MEJORA DE LOS PARAMETROS DE LA PRODUCCION Y DE LOS RENDIMIENTOS DE MATERIA Y ENERGIA. ESTO SE CONSIGUE, PORQUE SE HACE FUNCIONAR UN TURBOCOMPRESOR DE TRANSMISION DE VARIAS LONGITUDES DE ONDA SEPARADO DEL AIRE DEL PROCESO Y DEL GAS NITROSO, COMPRIMIENDO EL AIRE DEL PROCESO A LA CITADA PRIMERA PRESION, Y COMPRIMIENDO EL GAS NITROSO A LA CITADA SEGUNDA PRESION.
Patent ES-2202946-T3 (ES)
Inventor: DURHAMMER GUNTHER
IPC: A24D1/02
Filed: 1999-03-13
Granted: 2004-04-01
Abstract: The cigarette has its tobacco strand wrapped around with a layer of paper with water-repellent impregnation made from cellul derivatives to obtain air permeability in the wrapper and avoid spotting on the wrapper. The cigarette has its tobacco strand wrapped around with a layer of paper with water-repellent impregnation made from a cellulose derivative, preferably ethyl cellulose, to obtain air permeability in wrapper of at least 20 Coresta units, preferably at least Coresta units. The cellulose derivative is applied in several layers.
Patent ES-2222006-T3 (ES)
Inventor: HASSIG HARRY
IPC: B22D18/04
Filed: 1999-04-12
Granted: 2005-01-16
Abstract: The casting unit with two manipulators (46) for handling the molds has both manipulators rotatable independently of one another about a common axis (20), and are provided with separate rotational drives (30, 32).
Patent ES-2205683-T3 (ES)
Inventor: HAGELE FRITZ
IPC: F25D17/06
Filed: 1999-11-22
Granted: 2004-05-01
Abstract: The invention relates to a unit in which the cooling and defrosting equipment e.g. drain pan (13) for melted ice water, evaporator (14), heater (14.1) etc, are mounted at the top of the equipment interior. To accommodate the connection for the power supply to this equipment,   their supply leads are brought out to a push-on terminal strip (29) housed in a recess (27) close to the appliance door (12).
Patent ES-2237883-T3 (ES)
Title: Material optico formado.
Inventor: KAWANO SHINZI
IPC: C08J3/12
Filed: 1999-03-31
Granted: 2005-08-01
Abstract: LA INVENCION SE REFIERE A UN MATERIAL PARA MOLDEO OPTICO, QUE ES UN GRANULO DE RESINA DE POLICARBONATO AROMATICA, DONDE LA CANTIDAD DE POLVOS FINOS CON DIAMETRO DE PARTICULA DE 1,0 MM O INFERIOR, PRODUCIDA A PARTIR DE 5 KG DE GRANULOS MEZCLADOS EN UN RECIPIENTE DURANTE 1 HORA, ES DE 300 PPM O INFERIOR. LA FORMACION DE CARBURO DURANTE EL MOLDEADO SE PUEDE SUPRIMIR UTILIZANDO LOS GRANULOS DE LA PRESENTE INVENCION.
Patent ES-2188098-T3 (ES)
Inventor: CANCES JOEL
IPC: A61K47/10
Filed: 1999-02-19
Granted: 2003-06-16
Abstract: The invention provides a therapeutic aqueous composition comprising: (i) a therapeutically effective amount of a hexahydro-5-pyrimidinamine compound, e.g. hexetidine; (ii) a salification acidic compound; and (iii) a polyalkoxylated fatty alcohol. The composition shows enhanced stability.
Patent ES-2211001-T3 (ES)
Title: Procedimiento y dispositivo de colocacion de un elemento tubular retractil en un receptaculo, y conjunto asi obtenido.
Inventor: VINCENT HELENE
IPC: H02G15/18
Filed: 1999-05-14
Granted: 2004-07-01
Abstract: LA INVENCION SE REFIERE EN PARTICULAR A UN PROCEDIMIENTO DE COLOCACION DE UN ELEMENTO RETRACTIL EN UN RECEPTACULO TAL COMO UN CABLE. ESTE PROCEDIMIENTO PREVE ENSARTAR UN DISPOSITIVO (1) EN EL RECEPTACULO, Y LA EVACUACION DE UN TUBO (5) DEL DISPOSITIVO (1) QUE SOPORTA EL ELEMENTO (2) PARA QUE ADOPTE LA FORMA DEL RECEPTACULO, - MANTENIENDO EL ELEMENTO (2) EN SU EMPLAZAMIENTO Y - EJERCIENDO EN UN CONDUCTO (7) UNITARIO, EXTENDIDO INTERIORMENTE HASTA CERCA DE UN EXTREMO POSTERIOR DEL TUBO (5), UN ESFUERZO DE TRACCION HACIA ATRAS, PROVOCA LA EVACUACION SIMULTANEA DEL TUBO (5) CON EL CONDUCTO.
Patent ES-2217712-T3 (ES)
Inventor: MORALY FRANCK
IPC: A23L27/30
Filed: 1999-12-22
Granted: 2004-11-01
Abstract: A pulverulent dextrose comprises dextrose (at least 99 %) and water (up to 1 %) and has a content of dextrose in its  alpha crystalline form of at least 95 %, and a compressibility of at least 80, preferably 100-200, N. An Independent claim is also included for the preparation of pulverulent dextrose comprising granulating a dextrose powder (essentially in its  alpha  crystalline form) with a binding agent and drying the dextrose granules.
Patent ES-2230835-T3 (ES)
Title: Formulaciones de parasiticidas que contienen agua de aplicacion por via dermica.
Inventor: SIRINYAN KIRKOR
IPC: A01N43/78
Filed: 1999-02-10
Granted: 2005-05-01
Abstract: Formulaciones que contienen agua para el combate por vía dérmica de insectos parasitarios en animales, de la siguiente composición: a) imidacloprid en una concentración de 1 a 20% en peso, referido al peso total de la formulación; b) agua en una concentración de 2, 5 a 15% en peso, referido al peso total de la formulación; c) disolventes del grupo de alcoholes o, dado el caso, pirrolidonas sustituidas en una concentración de al menos el 20% en peso referido al peso total de la formulación; d) disolventes del grupo del carbonatos cíclicos o lactonas en una concentración de 5 a 50% en peso, referido al peso total de la formulación; e) dado el caso, otros coadyuvantes del grupo de agentes espesantes, agentes extensores, colorantes, antioxidantes, propulsores, sustancias conservantes, adhesivos, emulsionantes; f) dado el caso, otras sustancias activas, en donde la suma de sustancias activas, disolventes y coadyuvantes alcanza el 100%.
Patent ES-2294840-T3 (ES)
Inventor: HASSICK DENIS E
IPC: C01B25/45
Filed: 1999-04-20
Granted: 2008-04-01
Abstract: A coagulant which is the reaction product of a trivalent metal salt (eg., FeCl3), excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effectively used to remove suspended solids and various impurities in most water treatment applications.
Patent ES-2216513-T3 (ES)
Inventor: NEOGI PARTHA
IPC: A61K31/426
Filed: 1999-05-07
Granted: 2004-10-16
Abstract: Novel diphenylethylene compounds containing thiazolidinedione or oxazolidinedione moieties are provided which are effective in lowering blood glucose level, serum insulin, triglyceride and free fatty acid levels in animal models of Type II diabetes. In contrast to previously reported thiazolidine compounds, known to lower leptin levels, the present compound increase leptin levels and have no known liver toxicity.
Patent ES-2325798-T3 (ES)
Title: Carton de barrera de sin material de union de poliolefina con una caoa de polietilentereftalato en contacto con el producto.
Inventor: GIBBONS CHARLES E
IPC: B65D5/56
Filed: 1999-05-28
Granted: 2009-09-17
Abstract: Una estructura laminada para un recipiente que comprende: a) un sustrato estructural; y b) una capa de barrera reciclable de dos capas, que comprende una capa de un polietilentereftalato sellable térmicamente modificado con ácido o modificado glicol y una capa de copolímero de etileno y alcohol vinílico, recubierta sobre el sustrato, en la que la estructura laminada no contiene capas de unión basadas en poliolefina; en la que el copolímero de etileno y alcohol vinílico tiene un contenido de etileno que varía entre el 21-44% en peso.
Patent ES-2219022-T3 (ES)
Title: Detector de presion destinado para medir la presion de gas en un cilindro de un motor de combustion.
Inventor: GUSTAFSSON PAR
IPC: G01L9/00
Filed: 1999-05-11
Granted: 2004-11-16
Abstract: Sensor de presión para la medición de una presión de gas en un cilindro de un motor de combustión, donde el sensor de presión comprende un tubo (6) que, en la dirección axial, consta en parte de una sección conectada al cilindro y abierta al cilindro, en parte de una sección de medición (12) con una longitud axial "L" y en parte de una sección final, cuyo extremo está cerrado, caracterizado porque, dicha sección de medición (12) tiene una sección transversal que comprende una forma de reloj de arena que consta de dos partes en forma circular con una distancia "B" entre sus centros conectados entre sí a través de una cintura con una altura de "h" que forma dos superficies de medición equivalentes paralelas "BxL" a una distancia "h" entre sí.
Patent ES-2211192-T3 (ES)
Title: Jarabe antihistaminico estabilizado que contiene acido aminopolicarboxilico como estabilizante.
Inventor: MUNAYYER FARAH J
IPC: A61K31/445
Filed: 1999-05-27
Granted: 2004-07-01
Abstract: Una formulación de jarabe que contiene una antihistamina elegida entre el grupo consistente en loratadina, descarboetoxiloratadina, azatadina y combinaciones de dos o más de cualquiera de los mismos, y de 0, 05 a 5 mg/mL de un ácido aminopolicarboxílico o una sal del mismo.
Patent ES-2224714-T3 (ES)
Title: Composicion perfumante transparente.
Inventor: STORA THIERRY
IPC: A61K8/18
Filed: 1999-12-06
Granted: 2005-03-01
Abstract: Perfume, agua de baño o agua de Colonia en forma de emulsión de aceite-en-agua o de agua-en-aceite, donde el aceite contiene al menos un ingrediente perfumante, incluyendo la indicada composición de un 5 a un 50% en peso de una fase dispersa y de un 95 a un 50% en peso de una fase continua, siendo la diferencia entre los índices de refracción n de dicha fase dispersa y de dicha fase continua inferior o igual a 0, 003, preferiblemente inferior o igual a 0, 001, y siendo la viscosidad de la emulsión inferior a 10 Pa.s.
Patent ES-2193767-T3 (ES)
Inventor: BERGER JOHANN
IPC: B60R21/18
Filed: 1999-12-14
Granted: 2003-11-01
Abstract: A method of fabricating an inflatable seat webbing, more particularly for a seat belt, comprising the steps of weaving a two-ply fabric having an upper ply and a lower ply, folding and placing outermost outer parts on adjoining parts so that all parts are located in sequence above or below a middle part to result in, as viewed in a warp direction, the configuration of a collapsed concertina, and tucking the middle part to the left as viewed from a predetermined direction in relation to fabric threads so that the upper ply and the lower ply of the middle part formerly facing each other now face outwards and sandwiching the folded outer parts and the middle part in between.
Patent PL-1498656-T3 (PL)
Title: Lighting device, in particular tunnel lighting
Inventor: BERGMEISTER MARKUS
IPC: F21W131/101
Filed: 2004-07-14
Abstract: The illumination device has a housing device (8) and a circuit board (1) fitted with light emitting diodes (2) arranged inside the housing device. Several illumination devices can be arranged in modular form longitudinally and/or over an area, whereby the circuit board can be fitted with light emitting diodes at variable distances. An independent claim is also included for the following: (a) a tunnel illumination system.
Patent PL-1555258-T3 (PL)
Title: Preparation of di- and/or triisocyanates
Inventor: MEYN JÜRGEN
IPC: C07C263/10
Filed: 2004-12-06
Abstract: Preparation of diisocyanates and triisocyanates comprises feeding diamines and/or triamines in vapor form at mean flow velocity of 20-150 m/s to tubular reactor via concentric annular gap formed between walls of double-walled guide tube extending centrally in direction of axis of rotation of reactor; and feeding phosgene to reactor over remaining cross-sectional areas of reactor at mean flow velocity of >=1 m/s. Preparation of diisocyanates and triisocyanates of formula R(NCO) n comprises gas phase phosgenating the corresponding diamines and/or triamines of formula R(NH 2) n by providing a tubular reactor (1); heating the diamines and/or triamines in vapor form and phosgene separately from one another to 200-600[deg]C; feeding the diamines and/or triamines (A) in vapor form to the tubular reactor via a concentric annular gap at a mean flow velocity of 20-150 m/s; and feeding the phosgene (B) to the tubular reactor over the remaining cross-sectional areas of the tubular reactor at a mean flow velocity of >=1 m/s. R : (cyclo)aliphatic or aromatic not >15C hydrocarbon; and n : 2 or 3. At least 2 carbon atoms are arranged between two isocyanate (NCO) groups. At least 2 carbon atoms are arranged between two amino (NH 2) groups. The tubular reactor has a double-walled guide tube (6) extending centrally in the direction of the axis of rotation (8) of the tubular reactor. A concentric annular gap is formed between the inner and outer walls of the double-walled guide tube. The ratio of the cross-sectional area of the tubular reactor bound by the inner wall of the guide tube to the cross-sectional area of the tubular reactor bound by the wall of the tubular reactor and the outer wall of the guide tube is 1:0.5-1:4.
Patent PL-1656077-T3 (PL)
Title: Gutta percha tip
Inventor: MANNSCHEDEL WERNER
IPC: A61K6/00
Filed: 2004-08-19
Abstract: A gutta percha tip is uses as a dental tool in a root channel filling operation. On section of the tip has a cross sectional zone with a non-circular profile of varying roughness on or in the surface.
Patent PL-1777333-T3 (PL)
Title: Foot base and foot for an appliance
Inventor: TSCHINKEL HORST
IPC: D06F39/12
Filed: 2005-10-22
Abstract: The invention relates to a foot base (1) for an appliance, in particular for a washing machine, said fo
Patent PL-1788885-T3 (PL)
Title: Process for the preparation of an oil in water emulsion comprising an oil comprising unsaturated fatty acid residues
Inventor: SCHREIBER REGINA
IPC: A23D7/00
Filed: 2005-08-12
Abstract: Oil in water emulsions with good firm texture can be prepared by a process wherein oil comprising unsaturated fatty acid residues is added after acidification. The resulting emulsions do not show off flavour which is often found for emulsions comprising unsaturated fatty acid residues. Preferred emulsions are free of antioxidants.
Patent PL-1847259-T3 (PL)
Title: Compositions comprising thieno[2,3-c]pyridine derivatives as active agents with poloxamers as lubricants
Inventor: BECKERT THOMAS
IPC: A61K9/20
Filed: 2006-04-13
Abstract: Pharmaceutical composition (I) comprises a thieno(3,2-c)pyridine-derivative as active agent, and a poloxamer. An independent claim is included for the preparation of (I) containing thieno(3,2-c)pyridine-derivative comprising using the poloxamer as a lubricant.
Patent PL-1733977-T3 (PL)
Title: Package comprising a container, a lid and a seal.
Inventor: CATTEAU FRÉDÉRIC
IPC: B65D43/02
Filed: 2006-06-14
Abstract: The package has a container (100) with an opening (105) and a wall (101) defining an inner cavity (102) to receive a product. A rim (108) extends around the wall, and a cover (200) closes the opening. A liner (300) arranged between the container and cover to form a sealed closure is separated from the cavity by a conical portion (111) of the container/cover when the container is closed by the cover. The container has a notch extending in a direction transversal to the liner when the container is closed, where the notch allows the insertion of a tool between the liner and the container/cover.
Patent PL-1941191-T3 (PL)
Title: Flap valve
Inventor: DUTOT ANTOINE
IPC: F16K27/02
Filed: 2006-10-19
Abstract: A valve has a first duct and a second duct into which the first duct opens at right angles, thereby defining an intersection that forms a seat for a valve disk that slides in the second duct at right angles to the seat between a closed position and an open position. The valve disk has, facing the seat, a deviation surface of curvilinear profile having a narrow base facing toward the seat and widening away from the seat configured to deflect at right angles to the first duct a gaseous stream originating therefrom.
Patent PL-2029436-T3 (PL)
Title: Clipper comprising a tag lifter plate
Inventor: HASCHKE EGGO L
IPC: B65C7/00
Filed: 2007-05-24
Abstract: A clipper has a punch movable in a reciprocating path from a retracted position to an extended position, a clip rail for feeding a clip into the reciprocating path of the punch, a tag loading window oriented to hold a tag in the reciprocating path of the punch, a die adjacent to the extended position of the punch, a knife movable in a reciprocating path from a retracted position to an extended position, the knife having a top side and a bottom side, the reciprocating path of the knife being adjacent to the die, and a tag lifter plate mounted between the die and the reciprocating path of the knife, the tag lifter plate having a top side, the top side being between the top side of the knife and the bottom of the knife when the knife is in the extended position.
Patent PL-2064090-T3 (PL)
Title: Motor vehicle license plate
Inventor: BEENKEN BJÖRN
IPC: B60R13/10
Filed: 2007-08-07
Abstract: In order to prevent motor vehicle license plates from being manipulated by mounting the same elsewhere, prior art license plates are partially or entirely destroyed when the same are dismounted from the designated vehicle. License plates (58) that are disposed on a fixture (59) are particularly difficult to secure in a simple and effective manner against theft, especially against the use thereof for identifying another vehicle. According to the invention, a protrusion (64) that engages into a breakthrough (65) in the license plate (58) is assigned to the fixture (59), and a top surface (75) of the breakthrough (66) and a breakthrough (65) edge which surrounds the breakthrough (66) in the license plate (58) are covered by a sticker (67). The sticker (67) cannot be removed from the license plate (58) and/or the protrusion (64) without being damaged. The sticker (67) thus creates a seal-type connection between the license plate (58) and the fixture (59). A sticker (67) that is damaged because the license plate (58) has been removed from the fixture (59) without authorization will be noticed if the dismounted license plate (58) is used for identifying other motor vehicles and thus make it very obvious that a stolen license plate (58) is used on another motor vehicle.
Patent PL-2219336-T3 (PL)
Title: Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal
Inventor: KO WOO SUK
IPC: H04L27/34
Filed: 2009-08-05
Abstract: The present invention relates to a method of transmitting and a method of receiving signals and corresponding apparatus. One aspect of the present invention relates to an efficient L1 signaling method for an efficient transmitter and an efficient receiver using the efficient L1 signaling method for an efficient cable broadcasting.
Patent PL-2259164-T3 (PL)
Title: Thermal solution for electronic devices
Inventor: SMALC MARTIN DAVID
IPC: G06F1/20
Filed: 2004-10-21
Abstract: A thermal solution for an electronic device, which is positioned between a heat source and an external surface of the electronic device and/or another component of the electronic device, where the thermal solution facilitates heat dissipation from the heat source while shielding the external surface and/or second component from the heat generated by the heat source.
Patent SE-1066134-T3 (SE)
Inventor: RAMANATH S
IPC: B24D5/06
Filed: 1999-02-04
Abstract: Abrasive tools suitable for precision grinding of hard brittle materials, such as ceramics and composites comprising ceramics, at peripheral wheel speeds up to 160 meters/second are provided. The abrasive tools comprise a wheel core (2) attached to an abrasive rim of dense, metal bonded superabrasive segments (8) by means of a thermally stable bond (6). A preferred tool for backgrinding ceramic wafers contains graphite filler and a relatively low concentration of abrasive grain (4).