baber/WOPTO huggingface dataset:
Patent BR-9808717-B1 (BR)
Inventor: HAGENS RODGER GRAHAM
IPC: C09J1/02
Filed: 1998-05-04
Abstract: Novel starch-silicate adhesive compositions are disclosed which are of particular advantage in the manufacture of corrugated board. By the controlled combination of starch, alkali silicate and, optionally, caustic soda and borax it has been found possible to produce useable adhesives having much higher levels of solids content than conventional starch-based adhesives, thereby allowing for lowered energy costs in use of the adhesive formulation to manufacture boxboard, as well as improved product quality. The formulation of starch-silicate adhesives according to the invention allows viscosity, rheological characteristics-in particular gelation temperature-and the speed of "green-bond" formation to be controlled and adapted to the requirements of modern high-speed corrugating equipment.
Patent BR-9913049-B1 (BR)
Inventor: NUMRICH UWE
IPC: B29C48/88
Filed: 1999-08-16
Abstract: Injection-molding materials comprised of polycarbonate can be processed into optically isotropic films in a chill roll extrusion method. The optically isotropic films for protecting data carriers (CD-ROMS) from becoming scratched, or they are used as supporting materials for the information layer.
Patent CH-698807-B1 (CH)
Title: Abgasturbolader für eine Brennkraftmaschine.
Inventor: SPENGLER MICHAEL
IPC: F02C6/12
Filed: 2006-06-13
Abstract: Die Erfindung betrifft einen Abgasturbolader für eine Brennkraftmaschine, mit einer Turbine zur Entspannung eines einen Motor der Brennkraftmaschine verlassenden Abgasstroms, und mit einem Verdichter zur Verdichtung eines dem Motor der Brennkraftmaschine zuzuführenden Verbrennungsluftstroms, wobei die Turbine ein als Krümmer ausgebildetes Zuströmgehäuse (10) aufweist, um den in der Turbine zu entspannenden Abgasstrom einem Turbinenrotor zuzuführen, und wobei dem Zuströmgehäuse (10) eine Waschdüse zugeordnet ist, um bei einem Betriebspunkt niedriger Motorlast in das Zuströmgehäuse (10) ein Waschmedium einzuführen. Erfindungsgemäss ist die Waschdüse auf einer mit der Rotationsachse (14) des Turbinenrotors zusammenfallenden Linie bzw. Geraden angeordnet.
Patent DE-2230943-B1 (DE)
Title: Ham/pork derinding machine - with adjustable curved fat trimming knife
IPC: A22C17/12
Filed: 1972-06-23
Abstract: The joint is placed rind side downwards on a bed plate with a feed roller and horizontal rind stripping blade along one edge. The curved blade extends over the width of the machine and has a castellated support plate to which the cutting blade proper is clamped at each end of the arc. One clamp is mounted on a pivot shaft sloping downwards to the feed direction and the other clamp is pin jointed to a screw adjuster assembly whose axis is at right angles to the pivots. Easily adjusted to ensure thorough flensing without waste of lean meat.
Patent DE-2833439-B1 (DE)
Inventor: FINGERLING KARL-HEINZ
IPC: E04B1/76
Filed: 1978-07-29
Abstract: 1. Device for the permanent panelling of surfaces, especially of walls or internal roof surfaces of buildings, with plates for the purpose of insulation with foam material, characterized thereby, that it consists of a series of carrier frames (4, 11), against each of which a respective plate (3, 14) is locatable, and the carrier frames (4, 11) are articulatedly connected one with the other in mutually supporting manner.
Patent WO-0218772-B1 (WO)
Title: Moteur-fusee a segments
Inventor: BEYER STEFFEN
IPC: B23P15/00
Filed: 2001-08-24
Abstract: L'invention concerne un procédé de fabrication d'un moteur-fusée ainsi qu'un moteur-fusée qui comporte une chambre de combustion (1) et un divergent (2) adjacent à la chambre de combustion (1). Ce moteur-fusée comporte également au moins deux corps de segment monobloc (4a, 4b, 4c), chaque corps de segment (4a, 4b, 4c) formant des contours partiels de la chambre de combustion (1) et du divergent (2) et les corps de segment étant assemblés pour former la chambre de combustion (1) et le divergent (2).
Patent ES-2051638-B1 (ES)
Title: Un aglomerado de oxidos de hierro para la absorcion del acido sulfhidrico presente en el biogas.
Inventor: BOU CABRER JOSEP
IPC: B01D53/34
Filed: 1992-04-14
Granted: 1995-02-01
Abstract: UN AGLOMERADO DE OXIDOS DE HIERRO PARA LA ABSORCION DEL ACIDO SULFHIDRICO PRESENTE EN EL BIOGAS. COMPRENDE UN SUBSTRATO DE NATURALEZA VEGETAL, PARTICULARMENTE CORTEZA DE PINO, IMPREGNADA CON UN PRECIPITADO DE OXIDOS DE HIERRO, Y CON SALES DE METALES PESADOS QUE POTENCIAN LA ACCION DE DICHOS OXIDOS DE HIERRO.
Patent ES-2066698-B1 (ES)
Title: Nuevo sistema de programacion de selectores de moneda.
Inventor: ECHAPARE IBARROLA JESUS
IPC: G07D5/00
Filed: 1992-12-29
Granted: 1995-08-16
Abstract: NUEVO SISTEMA DE PROGRAMACION DE SELECTORES DE MONEDA. EL SISTEMA CONSISTE EN UTILIZAR TIPOS DE PIEZAS DISCOIDALES (A, B, C...) QUE POR SUS CARACTERISTICAS MECANICAS O ELECTRICAS PRESENTAN UN COMPORTAMIENTO ESPECIALMENTE FAVORABLE EN EL SELECTOR (BAJA DISPERSION EN LAS MEDIDAS), ESTABLECIENDOSE CON RELACION A DICHOS TIPOS DE PIEZAS DISCOIDALES UNA FUNCION DE CORRECCION PARA CADA TIPO DE MONEDA QUE HA DE SER ACEPTADA POR EL SELECTOR, SEGUN LA RELACION MSIN SC = FSIN SC (A, B, C...), INTRODUCIENDO POSTERIORMENTE ESTOS TIPOS DE PIEZAS EN CADA UNO DE LOS SELECTORES A PROGRAMAR, EN LOS QUE UN EQUIPO DE PROGRAMACION GENERARA, CON LOS DATOS QUE PROPORCIONA EL PROPIO SELECTOR Y CON AYUDA DE LAS CITADAS FUNCIONES DE CORRECCION (FSIN SC) LOS NIVELES DE REFERENCIA APROPIADOS PARA CADA DENOMINACION O TIPO DE MONEDA, QUE SON ALMACENADOS EN LA CORRESPONDIENTE MEMORIA DEL SELECTOR. PREFERENTEMENTE EL NUMERO DE TIPOS DE FICHAS DIFERENTES A UTILIZAR SERA DE DOS.
Patent ES-2103658-B1 (ES)
Title: Sistema de almacenamiento de equipajes anticipados.
Inventor: TAYLOR RONALD KEITH
IPC: B65G47/48
Filed: 1994-10-13
Granted: 1999-10-16
Abstract: Sistema de almacenamiento de equipajes anticipados incluye un transportador de almacenamiento para recibir equipajes anticipados procedentes de un sistema de manipulación de equipajes, por ejemplo, de un aeropuerto, y para descargar dichos equipajes anticipados sobre dicho sistema de manipulación de equipajes. El transportador de almacenamiento está dispuesto en una configuración en serpentina para hacer un uso eficaz del espacio horizonal existente e incluye estaciones de entrada y descarga espaciadas por igual. El sistema puede suministrar equipajes al sistema de manipulación de equipajes en un período de tiempo seleccionado para tener en cuenta los cambios que puedan producirse en los tiempos de salida de los vuelos o los cambios de planes de viaje de un pasajero.
Patent ES-2092961-B1 (ES)
Title: Procedimiento de fabricacion de calzados de goma.
IPC: A43B7/12
Filed: 1995-03-29
Granted: 1997-08-01
Abstract: PROCEDIMIENTO DE FABRICACION DE CALZADOS DE GOMA. EL PROCEDIMIENTO ESTA PREVISTO PARA OBTENER CALZADOS DE GOMA, COMO PUEDEN SER BOTAS DE CAUCHO, PARTIENDO DE UN FORRO TEXTIL ELASTICO SIN CALANDRAR, QUE ES APLICADO SOBRE UNA HORMA CONSTITUTIVA DEL MOLDE-NEGATIVO DEL CALZADO A OBTENER, DE MANERA QUE ESE FORRO TEXTIL ELASTICO UNA VEZ APLICADO SOBRE LA HORMA Y COSIDO PARA CONSEGUIR UN FORRO TUBULAR, RECIBE LA APLICACION DE UNA CAPA DE COLA, DE CUALQUIER DISOLUCION VULCANIZABLE O CUALQUIER CAUCHO DILUIDO, MEDIANTE UN SISTEMA SPRAY, PARA PEGAR SOBRE ELLA LA PIEZA DE GOMA QUE HA DE CONSTITUIR LA CAPA EXTERIOR DEL CALZADO. LA COLA DEBE SER APLICADA BAJO CONTROL DE PRESION, TEMPERATURA, DENSIDAD Y OTRAS VARIABLES. UNA VEZ COMPLEMENTADO EL CALZADO OBTENIDO MEDIANTE LA SUELA, BANDELETAS, TAPAJUNTAS Y TIRAS, EL CONJUNTO SE VULCANIZA EN UN AUTOCLAVE A 140 C DE TEMPERATURA Y A 3 KG/CM2 DE PRESION.
Patent ES-2143353-B1 (ES)
Title: Unos perfeccionamientos en los envases para liquidos.
Inventor: PRIO SULLA JAVIER
IPC: B65D81/32
Filed: 1996-11-29
Granted: 2001-01-01
Abstract: Unos perfeccionamientos en los envases para líquidos. La invención se refiere a un dispositivo o varios, formado por un recipiente semiesférico o de cualquier otra forma, que va adosado o formando parte de un envase metálico preferentemente de aluminio, como un conjunto, en cuyo interior, el del recipiente se alojará una o varias sustancias que podrán ser líquidos o sólidos, el objeto de dicho recipiente al incorporarlo al envase es de mezclar total o parcialmente a voluntad del consumidor, la sustancia que aloja en su interior con el resto del contenido del envase metálico o de otro material adecuado.
Patent ES-2141059-B1 (ES)
Title: Transportador de frutas y hortalizas para su clasificacion por peso y parametros electroopticos.
Inventor: SANCHEZ DE LEON RODRIGUEZ RODA
IPC: B65G47/38
Filed: 1998-06-16
Granted: 2000-09-01
Abstract: El objeto de la invención es un Transportador de frutas y hortalizas para su clasificación por peso y parámetros electro- ópticos, del tipo monorraíl, con elementos portadores de la fruta acoplados a una cadena de arrastre, formados por rodillos bicónicos giratorios. Cada portador está compuesto por dos biconos (1) unidos por un marco (2), encastrándose el conjunto en una cadena de arrastre (3) por medio de una pieza de anclaje (4) con dos salientes (5), con capacidad de desplazamiento vertical. Al deslizar el marco (2) sobre unas guías, transmiten estas el peso a células de carga, cuya señal es analizada electrónicamente para descontar la tara y obtener el peso de cada fruta. Los biconos (1) giran por rozamiento de sus extremos esmerilados con una cinta motora, dependiendo la velocidad y el sentido de giro de los biconos (1) de la relación entre las velocidades lineales de la cinta motora y la cadena de arrastre (3).
Patent ES-2157804-B1 (ES)
Title: Procedimiento y equipo para duplicacion de emisores.
Inventor: CAMARENA SAMPEDRO ALEJANDRO
IPC: H04B14/04
Filed: 1999-06-28
Granted: 2002-03-01
Abstract: Procedimiento y equipo para duplicación de emisores. Equipo que nos va a permitir llevar a cabo la duplicación de emisores de frecuencia utilizados como mando a distancia, para ello el equipo consta de un display (3) y de un área de lectura de los códigos (8), se coloca el emisor a duplicar sobre dicha área se pulsa el botón (11) del canal a reproducir, el equipo, mediante sus bloques interiores leerán la señal, separarán el código de la señal portadora, grabarán el código sobre una memoria EEPROM, para luego a través del conector para cable de transmisión de datos (9) se transmitan los datos a los emisores, previamente habiendo pulsado el botón (11) del canal sobre el que se quiera grabar. El procedimiento de grabación va a ser distinto según los emisores sean del tipo DW-2 o de tipo DR-2.
Patent ES-2174683-B1 (ES)
Title: Producto coloreado para revestimiento y pavimentacion, y metodo de elaboracion.
Inventor: HERRAIZ MARTINEZ JUAN JOSE
IPC: C04B41/46
Filed: 1999-09-20
Granted: 2003-12-16
Abstract: Producto coloreado para revestimiento y pavimentación, y método de elaboración. Se emplea para el revestimiento de muros, fachadas, etc., y pavimentación de suelos mediante la técnica de aplicación de piedra proyectada, o cualquier otra modalidad. Se trata de un producto en forma de gránulo regular o irregular que se somete a un proceso de pigmentación total o parcial. Se utilizan unas resinas y pigmentos que mezclados con los disolventes adecuados y tras el proceso de mezclado correspondiente, da lugar a un cuerpo granulado decorado cromáticamente según gustos o necesidades. El árido o gránulo a pigmentar se carga en una máquina mezcladora y se le aplica el producto de pigmentación previamente obtenido al mezclar resinas con disolventes aromáticos y/o cetonas, así como con pigmentos orgánicos e inorgánicos. El mezclado se efectúa durante un tiempo determinado y después se procede a la extracción y secado del árido o gránulo ya pigmentado. Se puede proceder a dar sucesivas aplicaciones conpigmentos diferentes o iguales y finalmente se efectúa una etapa similar pero sin aportación de pigmentos para que el gránulo quede cubierto de una capa protectora de resinas.
Patent ES-2186458-B1 (ES)
Title: Cabezal encintador para la aplicacion de bandas de composite.
Inventor: TORRES MARTINEZ MANUEL
IPC: B65H37/00
Filed: 1999-11-08
Granted: 2003-12-16
Abstract: Cabezal encintador para la aplicación de bandas de composite, en el cual los medios para fijar la banda (3) a aplicar, sobre la superficie correspondiente, consisten en un pisador (6) y un elemento de presión (7), los cuales van dispuestos para su actuación independiente y sucesiva, siendo ambos basculables entre respectivas posiciones de trabajo y de retraimiento, actuando el pisador (6) en primera instancia y luego el elemento (7) presionando con fuerza; en tanto que la banda (3) es alimentada y conducida a través de medios posicionables que permiten el centrado respecto de la aplicación.
Patent FR-2815073-B1 (FR)
Inventor: REIG RAPHAEL
IPC: E21B43/08
Filed: 2000-10-09
Granted: 2002-12-06
Abstract: The drain element for collecting hydrocarbons comprises a screen (TM) surrounding a suction cylinder (CA) extending in a longitudinal direction (AL). The screen is made up of rods (TT, TC) which extend along said longitudinal direction (AL) and which are regularly spaced apart around the suction cylinder. At least one of said rods is hollow in order to form a collector rod (TC), said collector rod (TC) having a lateral orifice and communicating with the inside of the suction cylinder via one of its ends.
Patent FR-2831133-B1 (FR)
Inventor: MERMIER LAURENT MAURICE
IPC: B63B35/44
Filed: 2002-01-04
Granted: 2004-01-23
Abstract: The ship has an open or semi open main public space (4), which is situated around the axial longitudinal plane of the ship at the base of the port, and starboard longitudinal superstructures (3). The port and superstructures are located away from the axial longitudinal plane so that the ratio of the width of the superstructures and public space to that of the ship lies between 1.3 and 3.
Patent FR-2836672-B1 (FR)
Inventor: MARCHE HERVE
IPC: B64D27/26
Filed: 2002-03-04
Granted: 2004-06-04
Abstract: A strut ( 10 ) for hooking an engine ( 16 ) under a wing body assembly ( 12 ) of an aircraft comprises a rigid structure as well as a mechanism for hooking this structure under the wing body assembly. This mechanism comprises a front fastener ( 22 ), a rear fastener ( 24 ) and a structure ( 26 ) for absorbing thrust. To install an engine ( 16 ) of greater diameter under the wing body assembly ( 12 ) of an existing plane, the rear part ( 20 b) of the strut ( 10 ) is given a width which increases as it progresses to the rear. Furthermore, the rear fastener ( 24 ) comprises two braces which are fixed on both sides of the rigid structure and two shackles which connect each of the braces to an additional transverse rib integrated into the wing body assembly.
Patent FR-2843230-B1 (FR)
Inventor: ROSTAING HERVE
IPC: H01H67/22
Filed: 2002-08-02
Granted: 2005-04-29
Abstract: The magnetic actuator comprises a mobile magnetic part (4), stationary magnetic parts (5), and means (6) for starting movements of the mobile part with respect to the stationary parts. The device comprises two magnetic supports (1,2) placed in different planes which demarcate a space (5) where the mobile part (4) is in the state of levitation due to a magnetic guiding by the stationary magnetic parts until the mobile part comes to a limiting zone (10,20) at one of the two supports (1,2). The stationary magnetic parts (5) are joined with the respective supports (1,2), and the limiting zones (10,20) are distinct from the stationary magnetic parts.  The mobile magnetic part (4) comprises a magnet (40), and the stationary magnetic parts (5) comprise magnetic pieces (51,52,53,54). Each stationary part (5) comprises a pair of pieces (51,52), (53,54) on the supports (1,2). The means (6) for starting movements of the mobile part (4) are carried by one or both supports (1,2). The means (6) are with magnetic effect, by heating the stationary magnetic parts above the Curie temperature, by creating a magnetic field in the vicinity of the mobile magnetic part, by current-carrying conductors in the vicinity of the mobile part, possibly with a set of stable positions of levitation, or pneumatic or hydraulic. The stationary magnetic parts are made of a material which is magnetically soft, magnetically hard, with hysteresis, super-conducting, dia magnetic, or a combination. The magnetization of the stationary parts and of the mobile part are in the same direction. The mobile part (4) comprises a reflector (mirror) (50) which can pass through a slit (501) in the first support (1). The supports (1,2) are made of a material which is a semiconductor, a dielectric, a conductor or a combination. A matrix (claimed) of magnetic actuators comprises a set of magnetic actuators on the same support. A method (claimed) for manufacturing the magnetic actuator (claimed) comprises the steps of (i) making a removable frame on the first a magnetic substrate along the contour of the mobile magnetic part, (ii) depositing a first dielectric layer and making wells for receiving the stationary magnetic parts, (iii) depositing the stationary magnetic parts, (iv) depositing a second dielectric layer and making wells for receiving the mobile magnetic part and the conductors of the starting means, (v) making trenches by etching up to the removable frame, (vi) assembling the first turned substrate with the second substrate with spacers between the two substrates to demarcate the space (3), and (vii) etching the first substrate and eliminating the removable layer so to free the mobile part.
Patent FR-2873877-B1 (FR)
Inventor: COUPAIN ERIC
IPC: H04B1/10
Filed: 2004-08-02
Granted: 2006-12-01
Abstract: A method is provided for designing a digital reception filter for a wanted signal. The method includes modeling at least one transmission channel of at least one signal interfering with said wanted signal in such a way that the pattern of an interfering channel is obtainable, in bleaching said at least one interfering signal by a bleaching filter taking into consideration said interfering channel pattern and a noise thereon (pattern noise) and in calculating the coefficients of said digital reception filter using at least one coefficient of the bleaching filter.
Patent FR-2878784-B1 (FR)
Inventor: FAGOT REVURAT LIONEL
IPC: B60C23/20
Filed: 2004-12-02
Granted: 2007-02-09
Abstract: A ground-contacting component of a vehicle, consisting partly of polymeric compounds, in which at least one wireless temperature measurement system 7 based on surface acoustic wave or bulk acoustic wave technology is embedded in a region of a polymeric compound liable to reach temperatures above 100° C. and/or to be influenced by a surrounding region of a polymeric compound liable to reach temperatures above 100° C. during use of the vehicle. Also disclosed are a tire 1 and the use of a wireless temperature measurement system based on acoustic surface wave or bulk acoustic wave technology.
Patent FR-2892240-B1 (FR)
Inventor: AGNERAY ANDRE
IPC: H01T13/52
Filed: 2005-10-18
Granted: 2010-10-22
Abstract: A spark plug for a motor vehicle internal combustion engine, substantially elongated in shape, and including: two coaxial electrodes of an inner central electrode and an outer base electrode enclosing the central electrode; and an electrically insulating annular block, interposed between the central electrode and the base electrode and including an annular shoulder. The insulating annual block includes an annular groove located at the shoulder.
Patent FR-2896002-B1 (FR)
Inventor: GABEL CLAUDE
IPC: E04F21/18
Filed: 2006-01-06
Granted: 2009-07-10
Abstract: The clip (2) has a support surface (10) extending from an edge (16) of a base (8). A maintaining surface extends parallel to the support surface from another edge (18) of the base opposite to the former edge, and on the same side of the base as the support surface. An elastic blade (14) extends from the base to the exterior of a U-shape body formed by the base, support surface and maintaining surface by projecting on a side opposite to the surfaces and above the maintaining surface, where the strip has a fold (22) and a transversal rib. An independent claim is also included for a method of installing a board between the ground and a ceiling.
Patent FR-2921226-B1 (FR)
Inventor: DARGES BERNARD
IPC: H05K7/20
Filed: 2007-09-14
Granted: 2009-10-30
Abstract: The invention relates to a device for disassembling at least one electronic power component (10) from a cooling radiator (16, 50) of the component, the component and the radiator each including a respective cooling face (14, 22, 76) in thermal contact. A portion (78) of the cooling face of the component mounted on the radiator is free and accessible by a body (50) that is mobile relative to the radiator. The radiator includes a mobile member (90) connected to the radiator and for urging the mobile body (52) against the free portion (78) of the cooling face of the component for separating the component from the radiator. The invention can be used in the maintenance of electronic power boards.
Patent FR-2913394-B1 (FR)
Inventor: DESMARD FREDERIC
IPC: B60J5/10
Filed: 2007-03-06
Granted: 2009-04-17
Abstract: A system for attaching a hinge on a door leaf of an automobile includes at least two riveted self-punched connections that clamp the hinge and the door leaf.
Patent FR-2927631-B1 (FR)
Title: Utilisation d'un promoteur d'adherence dans une solution de nettoyage de la surface d'un substrat a base de tpe et/ou de pa, pour augmenter l'adherence dudit substrat avec les joints de colle aqueux.
Inventor: DHERBECOURT BRUNO
IPC: A43B13/12
Filed: 2008-02-15
Granted: 2010-03-05
Abstract: La présente invention concerne l'utilisation d'un promoteur d'adhérence (P) en quantité efficace dans une solution de nettoyage (N) pour former une solution de nettoyage promoteur d'adhérence (NP), ladite solution (NP) étant destinée à nettoyer la surface d'un substrat en matériau (TPE-PA), c'est-à-dire en matériau comprenant au moins un élastomère thermoplastique (TPE) et/ou au moins un polyamide (PA) et/ou leur(s) mélange(s), et à augmenter l'adhérence de ladite surface avec des joints de colle aqueux, ledit promoteur d'adhérence (P) comprenant au moins une molécule organique comportant au moins une fonction isocyanate bloquée par au moins un agent bloquant.
Patent FR-2984437-B1 (FR)
Inventor: MAHOUDEAUX ROGER
IPC: B60T11/04
Filed: 2011-12-15
Granted: 2014-01-17
Abstract: The invention relates to a member (4) for guiding a disc brake pad that is secured by the lugs thereof in the housing of the arms of the brake calliper. The member (4) comprises a body having a U-shaped section formed by an inner radial surface (42), a base (41) and an outer radial surface (43) disposed in the housing in the arm. The inner side of the body is bordered by an inner supporting surface (45) disposed against the inner surface (225) of the arm and an outer supporting surface (44) disposed against the front (251) of the stud (25) to which the member (4) is secured. The aforementioned surface (44) extends into a supporting surface (45) toward the front. The body comprises a locking tongue (48) that extends beyond the edge of the boy in order to be hooked in the housing (22).
Patent FR-2971151-B1 (FR)
Inventor: L ALLORET FLORENCE
IPC: A61K8/19
Filed: 2011-02-04
Granted: 2013-07-12
Abstract: The present invention relates to a cosmetic composition in the form of an oil-in-water emulsion containing, in a cosmetically acceptable medium: a) an anhydrous phase comprising at least one polar oil; b) at least composite particles with a mean size of between 0.1 and 30 µm, comprising a matrix and an inorganic UV-screening agent, the said inorganic screening agent being present in a content ranging from 1% to 70% by weight relative to the total weight of the composite particle, c) at least non-spherical particles that do not screen out UV radiation, chosen from aluminas, silicas, talcs, micas and nacres, and mixtures thereof.