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| Number | Title | Issue Date |
| 8110140 | Method of manufacturing ceramic optical components In methods of manufacturing optical components for infrared-light or ultraviolet-light applications, by lessening the expense consumed during finishing processes, a technique for manufacturing ceramic optical components inexpensively is realized. Raw material powder... | 02/07/2012 |
| 7399722 | Alumina/zirconia ceramics and method of producing the same Composite ceramics having a high strength, a high toughness and an excellent abrasion resistance, and a method of producing the same. The composite ceramics comprises 10 to 30 mass % of a zirconia crystal phase including Ce-stabilized zirconia crystal particles whic... | 07/15/2008 |
| 7375044 | Process for making a ceramic body containing alumina and boron carbide A process for making a ceramic body that includes the following steps: providing a starting powder mixture, the starting powder mixture comprises between about 15 volume percent and about 35 volume percent boron carbide powder and at least about 50 volume percent al... | 05/20/2008 |
| 7253129 | Rare earth garmet sintered compact A rare earth garnet sintered compact which is produced by subjecting a rare earth garnet powder such as YAG to a pre-sintering, sintering the pre-sintered product by HIP, and annealing the sintered product at 1100° C. to 1600° C. in a whole oxygen atmosphere under... | 08/07/2007 |
| 7126207 | Capacitor with carbon nanotubes In one embodiment, a capacitor comprises a substrate defining a first electrical terminal; a catalyst layer disposed on the substrate; a plurality of carbon nanotubes disposed on the catalyst layer; a dielectric layer disposed over the plurality of carbon nanotubes;... | 10/24/2006 |
| 7094718 | ESD dissipative ceramics This invention relates to a dense ceramics having ESD dissipative characteristics, tunable volume and surface resistivities in semi-insulative range (103-1011 Ohm-cm), substantially pore free, high flexural strength, light colors, for desired E... | 08/22/2006 |
| 7042005 | Extra-substrate control system The present invention involves a quantum computing apparatus that includes a substrate attached to which is a flux shield upon which is at least one element of circuitry. The flux shield has an aperture. Inside the aperture is a superconducting structure. The superc... | 05/09/2006 |
| 7022262 | Yttrium aluminum garnet powders and processing Methods of producing doped and undoped yttrium aluminum garnet and yttrium aluminum perovskite containing powders and the powders produced thereby are provided. Additionally, methods of forming doped and undoped polycrystalline yttrium aluminum garnet having a mean ... | 04/04/2006 |
| 6829908 | Fabrication of inclusion free homogeneous glasses The present invention relates to a method for forming an optical blank. The method includes providing a green body that has a non-porous exterior portion and a porous interior portion. The interior portion is evacuated to create a vacuum in the interior portion. The... | 12/14/2004 |
| 6777360 | Ceramic material, method of producing same, and formed product thereof A ceramic material suitable for use in production of paving tiles, construction tiles, flooring in offices, flooring in machinery plants and so forth is obtained by a method comprising steps of mixing defatted bran derived from rice bran with a thermosetting resin b... | 08/17/2004 |
| 6770230 | Surface finishing compression molding with multi-layer extrusion The compression molded article includes an outer plastic film layer, a first plastic layer adhered to the outer plastic film layer and a second plastic layer adhered to the first plastic layer. Long fibers having a length of from 8 to 100 mm are admixed with the sec... | 08/03/2004 |
| 6753284 | Sintered alumina ceramic, method for producing the same, and cutting tool A sintered alumina ceramic obtained by preparing a raw material powder mixture containing alumina and a Group 3A metal oxide or a Group 3A metal compound which provides a Group 3A metal oxide on heating, and firing said raw material powder mixture. The sintered cera... | 06/22/2004 |
| 6737010 | Process for heat treating ceramics A process for making a heat treated ground ceramic cutting tool and the resultant cutting tool. The process includes the steps of: providing an uncoated ground ceramic cutting tool having at least a portion thereof ground; and heat treating the uncoated ground ceram... | 05/18/2004 |
| 6723274 | High-purity low-resistivity electrostatic chucks The volume resistivity of a body consisting essentially of aluminum nitride is reduced by exposing the body to a soak temperature of at least about 1000° C. in an atmosphere deficient in nitrogen, such as an atmosphere consisting essentially of argon. The body can ... | 04/20/2004 |
| 6187253 | Method of preparing indium oxide/tin oxide target for cathodic sputtering An indium oxide/tin oxide powder with 5-15 wt. % tin oxide is subjected to an annealing treatment at Tࣙ1, 000° C. and is then partially reduced and subjected to hot isostatic pressing to produce a sputtering target with a density of at least 95% of the... | 02/13/2001 |
| 6187254 | Method of sintering silicon nitride based materials The present invention relates to a method for sintering of a silicon nitride based material using gas pressure sintering technique. It has been found that using a sintering atmosphere containing nitrogen and 0.1-10 vol-% carbon monoxide a cutting tool mat... | 02/13/2001 |
| 6162386 | Method for manufacturing silicon nitride sintered body The present invention provides a silicon nitride sintered body having characteristics such as excellent wear resistance, a method for manufacturing the sintered body, and a cutting insert formed thereof. The silicon nitride sintered body is formed of a po... | 12/19/2000 |
| 6156259 | Method of manufacturing piezoelectric materials In a method of manufacturing piezoelectric ceramics by molding pre-fired or calcined powders of ingredients of a piezoelectric ceramic material and sintering the powder mold at a high pressure, the powder mold is pre-sintered at an atmospheric pressure be... | 12/05/2000 |
| 6099761 | Process for producing solar-cell watch dial A solar-cell watch dial to be disposed on or above a solar cell housed in a watch, the solar-cell watch dial including an alumina of the formula Al2 O3 whose purity is at least 99.90% and exhibiting a light transmission ranging from ... | 08/08/2000 |
| 6017485 | Process for making a low electrical resistivity, high purity aluminum nitride electrostatic chuck A controlled dielectric loss, sintered aluminum nitride body having a density of greater than about 95% theoretical, a thermal conductivity of greater than about 100 W/m-K, and a dissipation factor measured at room temperature at about 1 KHz selected from... | 01/25/2000 |
| 5854158 | ZrO2 based ceramic material and method of producing the same A ZrO2 based ceramic material having excellent mechanical strength and fracture toughness comprises a first phase of ZrO2 grains containing CeO2 as a stabilizer and having an average grain size of 5 μm or less, a second p... | 12/29/1998 |
| 5827470 | Method for preparing a zirconia/zirconium diboride composite Preparing an electrically conductive ceramic composite by the steps of: 1) mixing and milling tetragonal zirconia alloy or a composite of zirconia-alumina with zirconium diboride, and 2) pressing in a die and sintering in an argon atmosphere between 1300° and... | 10/27/1998 |
| 5738820 | Sintered silicon nitride-based body and process for producing the same A sintered silicon nitride-based body comprising 20% or less by weight of a grain boundary phase and the balance being a major phase of grains of silicon nitride and/or sialon, wherein the major phase contains a grain phase of a ଲ-Si3 N | 04/14/1998 |
| 5736095 | Method of producing ceramic heater for oxygen sensor In order to produce a ceramic heater for an oxygen sensor, a method is used, which comprises the steps of: (a) molding a green cylindrical object from a ceramic material which contains a binder; (b) provisionally baking the green cylindrical object at a r... | 04/07/1998 |
| 5648303 | Non-magnetic ceramics for recording/reproducing heads and method of producing the same Non-magnetic ceramics for recording/reproducing heads comprising an alumina and any one of a compound selected from silicon carbide, boron carbide, zirconium carbide, titanium oxide, aluminum boride or zirconium boride, said ceramics having a Young's modu... | 07/15/1997 |
| 5630969 | Ceramic heater producing method A ceramic heater and a method for producing the ceramic heater. The ceramic heater includes a ceramic heater core formed in a rod shape having a bore extending axially through the heater core. The heater core has a pair of flattened portion near the rear ... | 05/20/1997 |
| 5453227 | Process for the production of ceramic prostheses A process for the production of a ceramic prosthesis by forming a blank from a mixture of zirconium oxide and hafnium oxide of between 94.8% and 95.3% by weight, yttrium oxide of between 4% and 5.2% by weight, and any further oxide as a balance of less th... | 09/26/1995 |
| 5389586 | Pressureless sintering of whisker reinforced composites A composite and pressureless sintering process for making whisker-reinforced alumina composites using about 2 to about 7.5 wt. % of a nitride modifier consisting essentially of silicon nitride, aluminum nitride, or mixtures thereof produces a sintered bod... | 02/14/1995 |
| 5342564 | Rapid sintering method for producing alumina-titanium carbide composites A method of making a sintered ceramic body for applications such as wear resistant parts and cutting tools. A green body is prepared from a powder mixture including alumina, TiC or (Ti(C,N)), a densification aid, and TiO2. The weight ratio of a... | 08/30/1994 |
| 5342562 | Reaction processing of AlN/SiC composites and solid solutions The invention encompasses a method of forming a composition containing an AlN-SiC composite and/or solid solution, the method comprising: a) combining sources of silicon nitride, aluminum, and carbon to form a mixture, and b) heating the mixture whereby the so... | 08/30/1994 |
| 5187125 | Sintered body of calcium carbonate and process for producing same The invention relates to a process for producing a sintered body of calcium carbonate without permitting thermal decomposition of calcium carbonate during sintering, and to the sintered body. A powder material primarily comprising calcium carbonate is sub... | 02/16/1993 |
| 5158916 | Process of producing powder-metallurgically produced ceramic formed body The instant invention is directed to the production of ceramic bodies of at least one disperse inorganic component embedded in a phase of aluminum oxide by producing a mixture of aluminum powder and optionally an alloying element, and a disperse inorganic... | 10/27/1992 |
| 5147446 | Method for fabrication of dense compacts from nano-sized particles using high pressures and cryogenic temperatures A method of producing a dense compact of ultra-fine powder employs low temperatures and high pressures to produce a very dense, nearly ideally packed compact from a starting nano-sized powder. The final product is capable of being easily hot-pressed or si... | 09/15/1992 |
| 5145829 | Method for manufacturing oxide high-temperature superconductor A compacted and highly oriented microstructure of the bulk-shaped Bi-Sr-Ca-Cu-O system oxide superconductor is obtained by the intermediate pressing method of the present invention. The growth rate of the high critical temperature phase in the bulk of Pb-... | 09/08/1992 |
| 5089196 | Non-magnetic substrate of magnetic head, magnetic head and method for producing substrate A non-magnetic substrate used for a magnetic head comprising a pair of non-magnetic substrates, and a magnetic layer structure sandwiched between the pair of non-magnetic substrates. The magnetic layer structure is comprised, of alternately laminated magn... | 02/18/1992 |
| 5081077 | Process for producing sintered body of metal boride and raw material composition therefor A process for producing a metal boride sintered body having a density of at least 90% of the theoretical density and a raw material composition therefor. The raw material composition is composed of a metal oxide, a metal carbide, and boron carbide, the am... | 01/14/1992 |
| 5013696 | Preparation of high uniformity polycrystalline ceramics by presintering, hot isostatic pressing and sintering and the resulting ceramic Polycrystalline ceramic bodies having uniform transparent optical characteristics are produced by providing a green compact, presintering that compact at a temperature in the range from about 1,350° C. to about 1,650° C. until the closed porosity stage ... | 05/07/1991 |
| 4994219 | Method for forming a high strength silicon nitride A method for forming a improved silicon nitride material characterized by high mechanical strength at high temperatures comprising a combination of approximately 0.5-6.0% by weight of strontium oxide, 2.0-12.0% by weight of yttrium oxide and the balance s... | 02/19/1991 |
| 4931238 | Method for manufacturing a sintered body with high density Method for manufacturing a sintered body with high density comprises: turning first powder into a first slurry by dispersing the first powder in a first dispersion medium composed mainly of substances capable of being extracted by supercritical fluid and ... | 06/05/1990 |
| 4829027 | Liquid phase sintering of silicon carbide Liquid phase sintering is used to densify silicon carbide based ceramics using a compound comprising a rare earth oxide and aluminum oxide to form liquids at temperatures in excess of 1600° C. The resulting sintered ceramic body has a density greater tha... | 05/09/1989 |
