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| Number | Title | Issue Date |
| 5308367 | Titanium-nitride and titanium-carbide coated grinding tools and method therefor A titanium nitride coating (or equivalent metal or alloy) is applied over the abrasive surface of conventional CBN and diamond tools by the process of physical vapor deposition at temperatures below the tempering temperature of the core metal and below th... | 05/03/1994 |
| 5306318 | Process for making coated abrasives for grinding wheels Processes for making coated cubic boron nitride abrasive particles for use in grinding wheels are provided having thick multilayer metal coatings which improve retention of the particles within abrasive tools. The metal coatings comprise a primary metal l... | 04/26/1994 |
| 5304223 | Structured abrasive article A coated abrasive article comprising a backing bearing on at least one major surface thereof abrasive composites comprising a plurality of abrasive grains dispersed in a binder. The binder serves as a medium for dispersing abrasive grains, and it may also... | 04/19/1994 |
| 5304342 | Carbide/metal composite material and a process therefor A sintered product useful for abrasion- and impact-resistant tools and the like is provided comprising an iron-group metal binder and refractory metal carbide particles, e.g. tungsten carbide, formed in situ during sintering by the exothermic reaction of ... | 04/19/1994 |
| 5300129 | Coating for improved retention of cbn in vitreous bond matrices The invention is directed to cubic boron nitride (CBN) particles coated with a thin inner layer formed by the reaction of a reactive glass or ceramic to form a chemical bond and, optionally, an outer layer of a vitreous material. The particles are useful ... | 04/05/1994 |
| 5299471 | Cutting insert for a rotary cutting tool A cutting insert for a rotary cutting tool comprises a body of tungsten carbide, with layers of polycrystalline diamond on opposite sides of the body. The diamond layers overlap across the centre-line of the insert. The cutting insert is shaped for retent... | 04/05/1994 |
| 5298285 | Method of producing a tool component A method is provided for producing a tool component which comprises a CVD diamond layer bonded to a cemented carbide substrate. The method includes the steps of providing a mass of carbide particles bonded into a layer with an organic binder, removing the... | 03/29/1994 |
| 5288554 | Abrasive filaments and production process thereof Abrasive filaments made of a composition which comprises 95-70 vol.% of a polyvinylidene fluoride resin, whose inherent viscosity (ηinh) ranges from 0.9 to 1.4, and 5-30 vol.% of abrasive grains. They are produced by melt-spinning the composit... | 02/22/1994 |
| 5288297 | Abrasive compact of cubic boron nitride and method of making same An abrasive compact comprising 40 to 90 volume percent of cubic boron nitride (CBN) crystals bonded by 60 to 10 volume percent of a bonding matrix comprised mainly of an intimate mixture of silicon nitride and metallic diboride MB2 where M repr... | 02/22/1994 |
| 5277702 | Plately alumina A novel platey alumina with essentially no aggregates, fines or fragments has been obtained. This product proves very advantageous in lapping substrate wafers for microelectronic applications. A process for making such products is also described.... | 01/11/1994 |
| 5275633 | Cutting member and method of manufacturing such member of compacted powder A cutting body is formed of compacted powder and has a lower side provided with a recess and a spaced protrusion. The body can be used as a cutting insert, or two identical such bodies can be sintered together to form an invertible cutting insert. Voids c... | 01/04/1994 |
| 5273557 | Twist drills having thermally stable diamond or CBN compacts tips The present invention is directed to rotary drill bits and blanks which retain polycrystalline diamond or CBN compacts, but which do not suffer from disadvantages attendant by prior drill designs. The inventive rotary drill bit has a slot within the head ... | 12/28/1993 |
| 5273559 | Abrasive dental articles An abrasive composition and dental articles made from same, the composition including abrasive particles dispersed throughout and entrapped within a polyurea or polyurethane urea matrix which contains soft and hard segments wherein the matrix is made from... | 12/28/1993 |
| 5273558 | Abrasive composition and articles incorporating same Bonded abrasive compositions, articles incorporating same, and methods of making the compositions and articles are presented, the compositions comprising abrasive particles dispersed throughout and adhered within an elastomeric polyurea matrix. The polyur... | 12/28/1993 |
| 5271964 | Process for manufacturing abrasive tape A process for manufacturing an abrasive tape comprising the steps of preparing a coating solution by mixing, as main constituents, abrasive grains, a binder, and a solvent, applying this coating solution on a substrate and drying the coating, and curing t... | 12/21/1993 |
| 5271749 | Synthesis of polycrystalline cubic boron nitride A sintered polycrystalline compact of cubic boron nitride is made by forming a mixture of about 45 to 65 percent by weight cubic boron nitride (cBN), from about 30 to 45 percent by weight hexagonal boron nitride (hBN), and from about 2 to 7 percent by wei... | 12/21/1993 |
| 5269821 | Coatable mixtures including erodable filler agglomerates, methods of preparing same, abrasive articles incorporating cured versions of same, and methods of making said articles Coatable mixtures including erodable filler agglomerates, and abrasive articles into which they may be incorporated are presented, the agglomerates comprising a plurality of individual grains of water insoluble filler agglomerated by an agglomerating agen... | 12/14/1993 |
| 5269820 | Method for surface treatment of plastic material and apparatus used therefor Using a treating solution which is easy to dispose after use, the surface of a plastic material is treated so that the treated surface has good adhesion to a coating film to be formed thereon. An aqueous dispersion containing an abrasive which is harder t... | 12/14/1993 |
| 5266087 | Synthetic abrasive stones and method for making same Synthetic abrasive stones and method for making same. A mixture of glass and 10-20% by weight foaming agent is provided. The mixture is heated to a temperature of from 788° to 899° C., and is then cooled to room temperature.... | 11/30/1993 |
| 5266088 | Water-based polish This invention relates to a composition comprising: water; particulate abrasive dispersed in said water, said abrasive having a Knoop scale hardness of at least about 1000 and an average particle size of from about 1 micron up to a U.S. Sieve Series Numbe... | 11/30/1993 |
| 5264010 | Compositions and methods for polishing and planarizing surfaces An abrasive composition for use in polishing or planarizing the surface of a work piece is provided comprising about 30 to 50 percent of cerium oxide; about 8 to about 20 percent of fumed silica and about 15 to about 45 percent of precipitated silica. Met... | 11/23/1993 |
| 5261930 | Polycrystalline, sintered abrasive granules based on -Al2 O.sub . The invention relates to polycrystalline, sintered abrasive granules based on -Al2 O3 with a density of >98% of the theoretical density of corundum, a Vickers hardness of 21 GPa and greater and a crystallite size of 0.05 to 1.... | 11/16/1993 |
| 5259147 | Granular abrasive material A granular abrasive material is produced from a dispersion consisting of raw materials containing alumina, compounds containing silica and other additives. The dispersion is ground to a sinterable slip with a grain size of less than 1 micrometer. The slip... | 11/09/1993 |
| 5256170 | Coated abrasive article and method of making same A method for preparing a coated abrasive article wherein the a plurality of abrasive grains are applied to a make coat such that the abrasive grains are substantially a mono-layer. The make coat precursor is a pressure-sensitive adhesive-like or pressure-... | 10/26/1993 |
| 5254194 | Coated abrasive sheet material with loop material for attachment incorporated therein A sheet of coated abrasive material including a backing having abrasive on one surface and loops projecting from its other surface by which the sheet of coated abrasive material can be held by hooks on the support surface of a pad. The backing comprises a... | 10/19/1993 |
| 5250085 | Flexible bonded abrasive articles, methods of production and use Bonded abrasive articles and methods of making and using same are presented, the bonded abrasive articles comprising abrasive particles dispersed throughout and adhered within an elastomeric polyurethane binder, at least a portion of the abrasive particle... | 10/05/1993 |
| 5250086 | Multi-layer metal coated diamond abrasives for sintered metal bonded tools Multi-layer coated diamond abrasive particles which exhibit good retention in abrasive tools and are simpler to manufacture are provided, wherein the coating comprises a single homogenous, carbide forming metal primary layer, preferably of chromium, and a... | 10/05/1993 |
| 5250084 | Abrasive tools and process of manufacture A process using predetermined magnetic lines of flux to position, orient, and retain abrasive particles having a magnetic conductive coating thereon to a substrate surface for bonding to the surface by suitable electro-plating or other plating processes. ... | 10/05/1993 |
| 5248317 | Method of producing a composite diamond abrasive compact A method of producing a composite diamond abrasive compact includes the steps of forming an unbonded assembly comprising a cemented carbide body, a layer of catalyst metal on a surface of the carbide body, a layer of carbide particles, alone or in admixtu... | 09/28/1993 |
| 5248318 | Lapping abrasive of alumina-zirconia system and method for producing the same Alumina-zirconia lapping abrasives containing tetragonal zirconia at a rate of 30% or less and optionally containing at least one oxide selected from the group consisting of yttrium oxide, calcium oxide, magnesium oxide, titanium oxide and other rare eart... | 09/28/1993 |
| 5244477 | Sintered sol gel alumina abrasive filaments A process is described for the production of bonded abrasive products in which the abrasive particles are filamentary alumina particles with a substantially uniform cross-section and an aspect ratio of at least about 1:1.... | 09/14/1993 |
| 5243811 | Grinder and method of manufacturing the same A peripheral surface of an annular shaped grinder is distributed with grinding particles. The grinding particles have a particles distribution such that the spacing between the grinding particles in the axial direction is less than 2/3 of the mean diamete... | 09/14/1993 |
| 5238467 | Abrasive suspension for wet honing and surface treating method using the same An abrasive suspension for wet honing for surface treatment of an electrically conductive substrate for an electrophotographic photoreceptor, the suspension comprising pure water having suspended therein at least 20% by weight, based on the total weight o... | 08/24/1993 |
| 5234470 | Media for use in pressurized device and method of farming A composite media comprising a plurality of discrete particles of an abrasive component mixed with and attached to a carrier component. The abrasive component and the carrier component are selected to provide desired wear of the composite media, during us... | 08/10/1993 |
| 5232470 | Flexible one-piece diamond sheet material with spaced apart abrasive portions A one-piece abrasive sheet and method of manufacture. The abrasive pad has a planar sheet portion with a plurality abrasive protrusion extending therefrom. The protrusions are intimately molded with the planar sheet portion to form a one-piece sheet. Ther... | 08/03/1993 |
| 5232469 | Multi-layer metal coated diamond abrasives with an electrolessly deposited metal layer Multi-layer coated diamond abrasive particles having improved wear performance in abrasive tools are provided, wherein the coating comprises a single homogenous, carbide forming metal primary layer, preferably of chromium, and at least one non-carbide for... | 08/03/1993 |
| 5228886 | Mechanochemical polishing abrasive A mechanochemical polishing abrasive and a process for using the mechanochemical polishing abrasive to polish the surface of a hardened workpiece cheaply and efficiently. The mechanochemical polishing abrasive comprises a slurry of colloidal silica and a ... | 07/20/1993 |
| 5224968 | Method for making abrasive wheels A method of forming abrasive grinding wheels includes the steps of preheating abrasive grains, an open circular mold and liquid epoxy binder, to a temperature below the curing temperature of the binder and at which the binder has relatively low viscosity.... | 07/06/1993 |
| 5221291 | Abrasive sheet and process for producing same An abrasive sheet having a high flexibility, mechanical strength and heat resistance, comprises (A) a matrix comprising an aromatic polyimide resin and (B) abrasive grains having an average size of 65-150 μm and evenly dispersed in an amount of 2 to 50% ... | 06/22/1993 |
| 5221293 | Grinding or separating tool and method for producing the same A grinding or separating tool has a base body with a synthetic plastic max and a plurality of reinforcing fibers, a working coating a plurality of hard grains, and an intermediate layer applied on the base body and located between the base body and the w... | 06/22/1993 |
