Patents Examined by Gwendolyn Blackwell-Rudasill
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Patent number: 6607851Abstract: A multi-layer tile material produced from layers of alumina enhanced thermal barrier material having different densities. The insulation layers are bound together by a high strength, high temperature alumina or silica binder having a coefficient of thermal expansion similar to that of the insulation layers. Use of the multi-layered tile allows the problems of tile slumping and of insufficient heat management associated with low density alumina enhanced thermal barrier tile to be overcome.Type: GrantFiled: October 26, 2001Date of Patent: August 19, 2003Assignee: The Boeing CompanyInventors: Robert A. DiChiara, Jr., Franklin K. Myers
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Patent number: 6537677Abstract: A process for forming a thin layer exhibiting a substantially uniform property on an active surface of a semiconductor substrate. The process includes varying the temperature within a reaction chamber while a layer of a material is formed upon the semiconductor substrate. Varying the temperature within the reaction chamber facilitates temperature uniformity across the semiconductor wafer. As a result, a layer forming reaction occurs at a substantially consistent rate over the entire active surface of the semiconductor substrate. The process may also include oscillating the temperature within the reaction chamber while a layer of a material is being formed upon a semiconductor substrate.Type: GrantFiled: June 1, 1999Date of Patent: March 25, 2003Assignee: Micron Technology, Inc.Inventors: Garry Anthony Mercaldi, Don Carl Powell
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Patent number: 6475605Abstract: A transparent, electric insulating, low-melting glass for covering a substrate includes chemical components of SiO2, B2O3, BaO and ZnO. This low-melting glass has a thermal expansion coefficient of from 65×10−7/° C. to 95×10−7/° C. within a range of 30-300° C.; a softening point of not higher than 600° C.; and a dielectric constant of not greater than 7.5 at a frequency of 1 MHz under room temperature.Type: GrantFiled: January 9, 2001Date of Patent: November 5, 2002Assignee: Central Glass Company, LimitedInventors: Naoya Hayakawa, Kazuhiro Nishikawa
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Patent number: 6472068Abstract: A frangible rupture disk and mounting apparatus for use in blocking fluid flow, generally in a fluid conducting conduit such as a well casing, a well tubing string or other conduits within subterranean boreholes. The disk can also be utilized in above-surface pipes or tanks where temporary and controllable fluid blockage is required. The frangible rupture disk is made from a pre-stressed glass with controllable rupture properties wherein the strength distribution has a standard deviation less than approximately 5% from the mean strength. The frangible rupture disk has controllable operating pressures and rupture pressures.Type: GrantFiled: October 26, 2000Date of Patent: October 29, 2002Assignee: Sandia CorporationInventors: S. Jill Glass, Scott D. Nicolaysen, Edwin K. Beauchamp
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Patent number: 6465106Abstract: This invention deals with dental abstract restorations which are formed from glass-ceramic materials. In this invention the dental restorations may be formed by pressing. The resulting dental restorations have superior optical esthetic and strength properties. The invention includes dental restorations which are formed from particular lithium-disilicate glass-ceramics. In addition to forming dental restorations by pressing, the dental restorations may be milled. After forming the dental restorations are altered by applying one or more layers of a porcelain material to said dental restorations, and fusing said layers.Type: GrantFiled: October 24, 2000Date of Patent: October 15, 2002Assignee: Tec Ventures, Inc.Inventor: Richard W. Petticrew
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Patent number: 6465105Abstract: A glass substrate is for use in a WDM optical filter which has an optical multilayer coated on the glass substrate and is formed by glass which has a composition related to the optical multilayer so as to assure stable multiplexing/demultiplexing operation in the optical filter. The glass includes SiO2 as a glass network-former and has an average linear thermal expansion coefficient between 100×10−7/K and 130×10−7/K within a temperature range between −30° C. and +70° C. The glass may include TiO2, Al2O3, and R2O (R: alkali metal element) in addition to SiO2 and may have a hardness suitable for the optical multilayer.Type: GrantFiled: August 2, 2000Date of Patent: October 15, 2002Assignee: Hoya CorporationInventors: Robert W. Johnson, Hiroaki Yanagita, Kazuaki Hashimoto
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Patent number: 6461733Abstract: Glass for a light filter capable of preventing variation of refractive index in a band-pass filter has a coefficient of thermal expansion within a range from 90×10−7/° C. to 120×10−7/° C. within a temperature range from −20° C. to +70° C. and, preferably, Young's modulus of 75GPa or over and Vickers hardness of 550 or over, and light transmittance for plate thickness of 10 mm of 90% or over within a wavelength range from 950 nm to 1600 nm.Type: GrantFiled: April 17, 2000Date of Patent: October 8, 2002Assignee: Kabushiki Kaisha OharaInventor: Naoyuki Goto
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Patent number: 6461736Abstract: Light-colored high-transmittance glass is provided which is made of a composition containing, as coloring components, on a weight percent basis, 0.02 to 0.06% (excluding 0.06%) total iron oxide based on Fe2O3, less than 0.024% FeO, and 0 to 0.5% cerium oxide and having a ratio of FeO based on Fe2O3 to the total iron oxide of less than 40%. The light-colored high-transmittance glass has a solar radiation transmittance of at least 87.5% and a visible light transmittance measured with the illuminant C of at least 90% when having a thickness of 3.2 mm. A glass sheet with a conductive film also is provided which includes a transparent conductive film formed on a surface of a glass sheet formed of the light-colored high-transmittance glass.Type: GrantFiled: March 2, 2001Date of Patent: October 8, 2002Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Yukihito Nagashima, Akihiro Koyama, Isamu Kuroda, Masahiro Hirata, Masato Hyodo, Koichiro Nakamura
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Patent number: 6458466Abstract: A braking component such as a brake pad, brake rotor, brake drum or clutch disk is comprised of a metal substrate having a friction material laminated on at least a portion of at least one face of the metal substrate, the friction material being a ceramic-metal composite comprised of a metal phase and a ceramic phase dispersed within each other, wherein the ceramic phase is present in an amount of at least about 20 percent by volume of the ceramic-metal composite. In particular, the braking component is a metal substrate, such as aluminum, having laminated thereto a ceramic-metal composite of a dense boron carbide-aluminum composite having high specific heat and low density.Type: GrantFiled: January 11, 2000Date of Patent: October 1, 2002Assignee: Dow Global Technologies Inc.Inventors: Bart R. Jones, Arthur R. Prunier, Jr., Aleksander J. Pyzik
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Patent number: 6447933Abstract: An alloy material is formed on an underlying material, and the alloy material comprises an alloy doping element mixed into a bulk material. A first layer of material including the alloy doping element is deposited on the underlying material using a first type of deposition process. The first type of deposition process is corrosion resistive to the underlying material according to one aspect of the present invention. A second layer of material including the bulk material is deposited on the first layer of material using a second type of deposition process. A thermal anneal may be performed by heating the first layer of material and the second layer of material such that the alloy doping element is mixed into the bulk material to form the alloy material on the underlying material. The alloy doping element of the first layer of material deposited on the underlying material promotes adhesion of the alloy material to the underlying material.Type: GrantFiled: April 30, 2001Date of Patent: September 10, 2002Assignee: Advanced Micro Devices, Inc.Inventors: Pin-Chin C. Wang, Sergey Lopatin
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Patent number: 6440574Abstract: The substrate for high-voltage modules has a ceramic later with a first main side and a second main side opposite to the first main side. The ceramic layer has a first dielectric constant. A top metal layer is disposed on the first main side and a bottom metal layer is disposed on the second main side. To reduce field tips, a dielectric layer with a second dielectric constant borders the top metal layer and is disposed on the first main side of the ceramic layer. The density of the field lines on the edges of the voltage-conducting elements is thus attenuated so that the dielectric constants of the ceramic layer and the dielectric layer match each other.Type: GrantFiled: February 5, 2001Date of Patent: August 27, 2002Assignee: Infineon Technologies AGInventor: Guy Lefranc
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Patent number: 6428914Abstract: A composite substrate in which the surface of the insulating layer is not influenced by the electrode layer and which requires neither a grinding process nor a sol-gel process, is easy to produce and can provide a thin-film EL device having a high display quality when used therein; a thin-film EL device using the substrate; and a production process for the device. The thin-film EL device is produced by forming a luminescent layer, other insulating layer and other electrode layer successively on a composite substrate comprising a substrate; an electrode layer embedded in the substrate in such a manner that the electrode layer and the substrate are in one plane; and an insulating layer formed on the surface of a composite comprising the substrate and the electrode layer.Type: GrantFiled: December 7, 2000Date of Patent: August 6, 2002Assignee: TDK CorporationInventors: Katsuto Nagano, Taku Takeishi, Suguru Takayama, Takeshi Nomura, Yukie Nakano, Daisuke Iwanaga
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Patent number: 6423415Abstract: Glassy coatings that isolate metal surfaces from carbon particles, and a method of applying the coatings. The coatings composed of essentially K2O, SiO2, and Al2O3, and has a CTE of at least 80×10−7/° C. These glassy coatings, which adhere well to metals, employ a potassium-silicate glass composition in three forms: a pure glass, a glass loaded with inert filler having a CTE higher than the glass itself, and a precursor frit that when “reactive-cerammed” produces a predominantly leucite crystalline phase and forms the glassy coating in-situ on the metal surface, creating a protective layer between the exposed metal surface and corrosive chemical-processing environments.Type: GrantFiled: August 31, 2000Date of Patent: July 23, 2002Assignee: Corning IncorporatedInventors: Margaret E. Greene, Robert Morena
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Patent number: 6423414Abstract: A transparent coated substrate with high reflectance, especially for use as in exterior glazing panels for buildings, is provided by a substrate carrying a coating stack comprising a pyrolytically-formed main layer containing oxides of tin and antimony, in which the main layer has a geometric thickness of at least 250 nm and the stack includes an outer reflective layer having a geometric thickness in the range 30 to 150 nm and a refractive index in the range 2.0 to 2.8, whereby the so-coated substrate has a reflectance (RL) of more than 10%.Type: GrantFiled: November 22, 1999Date of Patent: July 23, 2002Assignee: GlaverbelInventors: Philippe Legrand, Eric Tixhon
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Patent number: 6423433Abstract: A method of fabricating a semiconductor device having a Cu—Ca—O thin film formed on a Cu surface by immersing the Cu surface into a unique chemical (electroless plating) solution containing salts of calcium (Ca) and copper (Cu), their complexing agents, a reducing agent, a pH adjuster, and surfactants; and a semiconductor device thereby formed for improving Cu interconnect reliability, electromigration resistance, and corrosion resistance. The method controls the parameters of pH, temperature, and time in order to form a uniform conformal Cu-rich Cu—Ca—O thin film, possibly containing carbon (C) and/or sulphur (S), for reducing -electromigration in Cu interconnect lines by decreasing the drift velocity therein which decreases the Cu migration rate in addition to decreasing the void formation rate.Type: GrantFiled: June 29, 2001Date of Patent: July 23, 2002Assignee: Advanced Micro Devices, Inc.Inventors: Sergey Lopatin, Krishnashree Achuthan
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Patent number: 6416871Abstract: A surface-modified material and its associated method have been developed for surface modification of high temperature resistance alloys, such as FeCrAl alloys, in order to increase their oxidation resistance. The surface of the alloy is modified by treating it with a fluid, such as water-based colloidal silica dispersion. By this surface modification, the useful life of thin parts, such as wire and foil, has been significantly increased.Type: GrantFiled: May 26, 2000Date of Patent: July 9, 2002Assignee: Sandvik ABInventor: Thomas Graf
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Patent number: 6413619Abstract: According to the present invention, there is provided a method of marking a ceramic member, which comprises firing, in an atmosphere, a ceramic green body containing at least 0.05% by weight of a color changing agent capable of developing different color tones by heating in different atmospheres, and heating a specific portion of the resulting sintered body in the other atmosphere to form a marking portion whose color tone is different from that of the other portion, and a marked ceramic member, thereby making it possible to easily form a mark having excellent visibility in a short time without increasing the number of processes.Type: GrantFiled: July 28, 2000Date of Patent: July 2, 2002Assignee: Kyocera CorporationInventors: Noriaki Hamada, Youji Furukubo
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Patent number: 6410172Abstract: An article with an chemical vapor deposition (CVD) aluminum nitride coating is disclosed. The article is a heating element, wafer carrier, or electrostatic chuck. The article has a substrate made of a nitride of aluminum or boron, and further has one or more graphite elements for resistance heating or electromagnetic chucking or both. A pyrolytic boron nitride layer may be provided between the substrate and the CVD aluminum nitride coating, and may either encompass or exclude the graphite element or elements.Type: GrantFiled: November 21, 2000Date of Patent: June 25, 2002Assignee: Advanced Ceramics CorporationInventor: Michael H. Gilbert, Sr.
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Patent number: 6406795Abstract: A compliant substrate for the formation of semiconductor devices includes a crystalline base layer and a thin-film crystalline layer on and loosely bonded to the base layers. The thin-film layer has a high degree of lattice flexibility. A compliant substrate for formation of semiconductor devices may also include a crystalline base layer, and, on the base layer, a thin film layer having a lattice constant different from the lattice constant of the base layer. A method for formation of a compliant substrate for formation of semiconductor devices includes forming a thin film layer on a first substrate, bonding a first surface of the thin film layer to a surface of a second substrate having a lattice constant different from the lattice constant of the thin film layer either with or without twist bonding, and removing the first substrate to expose a second surface of the thin film layer.Type: GrantFiled: October 25, 1999Date of Patent: June 18, 2002Assignee: Applied Optoelectronics, Inc.Inventors: Wen-Yen Hwang, Yucai Zhou, Zuhua Zhu, Yu-Hwa Lo
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Patent number: 6406791Abstract: A multiphase dielectric composition for a multilayered ceramic device (10), and devices incorporating the same, including a (SrCa)TiO3 dielectric powder and a glass that is substantially free of lead having a weight ratio of about 35 to about 65 parts powder: about 65 to about 35 parts glass, and having a particle size of about 1 to about 2.5 micron (um) and having a dielectric constant (K) of about 18 to about 30 and an electrical Q of at least about 300 to about 550.Type: GrantFiled: August 14, 2000Date of Patent: June 18, 2002Assignee: Motorola, Inc.Inventors: Xunhu Dai, Rong-Fong Huang