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WO/2000/002707A1 |
A polishing pad for polishing a semiconductor wafer which includes an open-celled porous substrate having sintered particles of synthetic resin. The porous substrate is a uniform, continuous and tortuous interconnected network of capilla...
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WO/2000/000327A1 |
An abrasive article comprising a backing, a plurality of abrasive particles, a binder which adheres the abrasive particles to the backing, and a peripheral coat including an antiloading component is provided. The antiloading component is...
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WO/1999/067036A2 |
A grinding wheel (28) that rotates around an axis and that has a working area consisting of a ring area with a circular arc profile is used to create a surface by initial grinding with the ring surface oriented at a first point in space ...
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WO/1999/062673A1 |
A polishing pad or belt or other device with increased resistance to moisture absorption for improved planarizing effectiveness and consistency. The relatively moisture resistant polishing pad contains additives to improve wetting of the...
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WO/1999/061204A1 |
The invention is in the field of cutting disks employed in the construction industry for cutting concrete and construction materials in general and in industrial applications for cutting wood, glass and metals. More specifically the inve...
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WO/1999/059778A1 |
An abrasive article is formed having a barrier coating coextensive with and interposed between a backing and an abrasive coating. The hardened barrier coating essentially eliminates penetration of the abrasive coating into the backing, e...
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WO/1999/058299A1 |
A bonded-abrasive tool includes a matrix of an organic bond, abrasive grains dispersed in the organic bond and a grinding aid in the form of either an inorganic nonhalogenated filler or a hydrated filler. The inorganic nonhalogenated fil...
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WO/1999/056914A1 |
The present invention involves the use of powder coating methods to form coated abrasives. In one embodiment, the powder is in the form of a multiplicity of binder precursor particles comprising a radiation curable component. In other em...
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WO/1999/056913A1 |
A coated abrasive article comprises a backing, a first binder on the backing, and a plurality of abrasive particles in the first binder. The first binder precursor is an energy-curable, preferably melt-processable resing containing an ep...
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WO/1999/055493A1 |
A grinding wheel capable of polishing only protruded parts and having a self-stop function so that the polishing is terminated automatically when irregularities have been eliminated by the polishing and a polishing method using the grind...
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WO/1999/054424A1 |
Alumina-based abrasive material having at least an internal layer is provided. Preferably, the abrasive material results from co-extrusion of at least two different sols. In some preferred processing, steps to provide multiple internal l...
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WO/1999/054077A1 |
A method of making a composite diamond abrasive compact which comprises a polycrystalline mass of diamond particles present in an amount of at least 80 percent by volume of the compact, and a second phase containing a diamond catalyst/so...
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WO/1999/054425A1 |
Alumina-based abrasive material having at least an internal core structure is provided. Preferably, the abrasive material results from co-extrusion of at least two different sols. In some preferred processing, steps to provide multiple i...
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WO/1999/052676A1 |
An abrasive article is provided that includes a tie coat which improves adhesion between an abrasive layer and a backing in the abrasive article. The tie coat is preferably formed from a tie coat precursor comprising a sulfopoly(ester-ur...
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WO/1999/052677A1 |
An abrasive article includes a plurality of abrasive particles securely affixed to a substrate with a corrosion resistant matrix material. The matrix material includes a sintered corrosion resistant powder and a brazing alloy. The brazin...
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WO/1999/051400A1 |
An abrasive article is provided for precision grinding purposes, and the article comprises 3 to 25 volume % vitreous bond, 3 to 56 volume % MCA abrasive grain, and 28 to 63 volume % open porosity. Substantially all porosity in the abrasi...
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WO/1999/051401A1 |
A nonabsorbent, abrasive scrubbing pad, especially for domestic use in the kitchen or bathroom, comprising a nonwoven web of fibers in which the fibers have coated thereon an antimicrobial compound. The antimicrobial compound is disperse...
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WO/1999/048646A1 |
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) ...
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WO/1999/046077A2 |
A wire saw has a small diameter metal wire and a layer of abrasive grains firmly affixed to the wire surface by a brazed or soldered active metal bond. Preferably, the grains are present in a single layer. The grains are disposed on the ...
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WO/1999/043491A1 |
The present invention provides an abrasive material (50) comprising a base surface having a plurality of pyramidal shapes protruding therefrom the base surface and the protrusions (52) being formed of the same material, each protrusion (...
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WO/1999/043466A1 |
The present invention relates to an abrasive article. The abrasive article of the present invention contains an abrasive layer, a polyurethane structure bonded to the abrasive layer and a substrate bonded to the polyurethane structure. T...
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WO/1999/042250A1 |
The present invention is a fixed abrasive article for grinding or polishing the surface of a glass workpiece. The abrasive article for grinding glass has abrasive composites containing a binder, an alkaline metal salt, and diamond abrasi...
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WO/1999/041039A1 |
An end effector (11a, 11b) is provided for conditioning pads used to polish semiconductor wafers. The end effector (11a, 11b) has a substrate (13) with a matrix (15) (preferably a polymer) disposed thereon. Abrasive particles such as dia...
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WO/1999/039875A1 |
A grinding wheel (10), e.g. for use in grinding glass, has an outer periphery of abrasive material (13) secured to a body portion (12) made of a lightweight material.
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WO/1999/038648A1 |
A method of obtaining superabrasive grinding performance from tools employing less expensive, non-superabrasive conventional abrasive grain involves operating the conventional abrasive tool at ultra high tangential contact speed, (that i...
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WO/1999/037444A1 |
The polishing of the granite surface is carried out by using a mobile polishing machine of the conventional type which is provided with a polishing stone comprised of abrasive material of which the hardness has been reduced by 50-80 % an...
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WO/1999/028089A1 |
A polymeric foam finishing pad (10) is made by attaching a dense array of individual foam members (11) to a suitable support substrate (14). The member (11) may be individually attached to the substrate (14) or attached to the substrate ...
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WO/1999/028086A1 |
A resinoid grinding wheel comprising a dispersion of 25 parts by volume of Al¿2?O¿3?-base abrasive grains with grain size #150, 20 parts by volume of an organic hollow body with a mean grain diameter of 80 $g(m)m and 10 parts by volume...
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WO/1999/028087A1 |
A porous grinding stone for improving bonding power between super-abrasives and a binder, atritious wear characteristics of the binder during grinding and properties of the grinding stone, comprising super-abrasives as abrasives and meta...
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WO/1999/024223A1 |
Abrasive foam articles and a method of manufacture of such articles are described. The articles of the invention comprise a flexible and resilient foam substrate having first and second major substrate surfaces, at least one of the surfa...
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WO/1999/024218A1 |
Method of manufacturing a memory disk or a semiconductor device using a polishing apparatus (100) having a substrate and a fixed abrasive pad (6), the fixed abrasive pad (6) having a three-dimensional fixed abrasive polishing layer havin...
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WO/1999/024203A1 |
The invention relates to a composite honing ring comprising a honing part and a carrier part, whereby both components are made of of different materials and can contain plastic resins in particular. The invention is characterised in that...
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WO/1999/022911A1 |
A resin bonded abrasive tool consists of abrasive grain and an organic bond comprising a thermosetting resin such as epoxy resin, phenolic resin or rubber or blends thereof and a precursor filler system capable of forming in situ an acti...
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WO/1999/022912A1 |
An abrasive article (10) is provided which includes a peripheral surface formed comprising a grinding aid. The grinding aid is formed from a mixture including an acid and at least one of an inorganic metal phosphate salt or an inorganic ...
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WO/1999/022913A1 |
The present invention relates to an abrasive article containing an abrasive coating having more than one abrasive composite layer, wherein each abrasive composite layer has undergone at least one curing process. The abrasive article of t...
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WO/1999/022910A1 |
The present invention provides a vitreous-bonded abrasive tool wherein the abrasive grit portion comprises a thermally sensitive abrasive grain, such as sintered sol gel microcrystalline alpha alumina abrasive grain or superabrasive grai...
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WO/1999/019116A1 |
An abrasive article comprising an abrasive fabric comprising a fabric having discrete areas of electro-deposited metal extending on or therethrough and having abrasive material embedded in the metal, a layer of adhesive, and a backing su...
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WO/1999/015311A1 |
This invention relates to fixed abrasive articles and abrasive constructions containing at least one fluorochemical agent. The fixed abrasive articles and abrasive constructions are used in semiconductor wafer surface modification proces...
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WO/1999/015315A1 |
An abrasive article is provided that includes at least one binder system formed from a polymeric additive and a thermosetting resin. The polymeric additive includes a polymeric backbone having substituents attached thereto, wherein the s...
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WO/1999/014016A1 |
Abrasive slurries, abrasive articles made from the abrasive slurries, and method for the production of the abrasive articles are disclosed. The abrasive slurries and abrasive articles made therefrom comprise at least two grades of abrasi...
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WO/1999/012707A1 |
Coated abrasives suitable for very fine abrading applications can be obtained by depositing a layer of a formulation comprising abrasive grits, fillers, grinding aid, additives and a binder resin on a substrate in the form of a structure...
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WO/1999/012705A1 |
An optically reactive grindstone (1) is irradiated with light from a light irradiation device (2) opposed to the grinding stone (1), undergoes a chemical reaction to change its properties, and is dissolved in a solvent (4) and removed. A...
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WO/1999/010129A1 |
A polishing pad is provided for chemical-mechanical polishing widely used in the semiconductor industry. The pad material is hexagonal boron nitride and its composite. The pad is in the shape of a disc, a ring, or any plate having one or...
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WO/1999/007517A1 |
The method of the invention simplifies the production process of a coated abrasive article and shortens the production time by omitting the step of sealing a porous substrate and by shortening the curing time of a bonding agent. A proces...
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WO/1999/007518A1 |
A polishing pad system is provided comprising two or more layers, a means of adherence of the layers, and a means to vary the pad morphology during polishing or planarization with minimal process interruption. A preferred means is that o...
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WO/1999/007515A1 |
Polishing pads are provided having a polishing surface formed from a hydrophilic material. The polishing surface has a topography produced by a thermoforming process. The topography consists of large and small features that facilitate th...
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WO/1999/006500A1 |
The present invention provides an abrasive article, particularly a cut-off wheel, having a mixture of rare earth oxide modified abrasive grains and alpha alumina seeded or iron oxide nucleated abrasive grains. Preferably, the rare earth ...
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WO/1999/005234A1 |
A method of preparing a vehicle body part comprising applying a solid, granular abrasive powder to the surface of the body part, and a powder composition for use in carrying out this method. The powder composition comprises equal proport...
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WO/1999/003642A1 |
The present invention provides a method of making sheet articles, for example, abrasive articles, retroreflective articles (such as traffic signs), pavement marking articles, or traction or non-skid articles. The method includes passing ...
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WO/1999/003641A1 |
This super-abrasive-containing stratified composite material has a base member comprising a ceramic material and a metallic material, or a lump of a plurality of metallic materials; and a super-abrasive-containing lump bonded as an adjac...
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