Patents Examined by N M. Nguyen
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Patent number: 5482788Abstract: An article is coated with a multilayer coating comprising a nickel-tungsten-boron alloy layer deposited on the surface of the article, and a refractory metal compound, preferably zirconium nitride, deposited on the nickel-tungsten-boron layer. The coating provides the color of polished brass to the article and also provides abrasion and wear protection.Type: GrantFiled: November 30, 1994Date of Patent: January 9, 1996Assignee: Baldwin Hardware CorporationInventors: Stephen R. Moysan, III, Rolin W. Sugg
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Patent number: 5482787Abstract: An organic composite coated steel strip having well-balanced corrosion resistance, coating properties including adaptability to electrophoretic coating and water resistant secondary coating adherence, and spot weldability is provided. The organic composite coated strip comprises a zinc or zinc base alloy plated steel substrate; a chromate later on the substrate containing up to 70% by weight of Cr.sup.6+ based on the total chromium quantity, the chromate layer being coated in a weight of 5 to 500 mg/m.sup.2 in terms of elemental chromium; and an organic composite layer on the chromate layer mainly comprising silica and an organic high molecular weight resin. In the organic composite coated steel strip, (a) silica has an average primary particle diameter of 5 to 30 nm; (b) silica is agglomerated into agglomerates of an average thickness of 0.2 to 2 .mu.m and an average apparent diameter of 5 to 300 .mu.m; and (c) the organic composite layer has been coated to a dry weight of 0.1 to 3 g/m.sup.2.Type: GrantFiled: October 12, 1993Date of Patent: January 9, 1996Assignee: Kawasaki Steel CorporationInventors: Shigeko Sujita, Nobuyuki Morito
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Patent number: 5478659Abstract: An article is coated with a multilayer coating comprising a nickel layer deposited on the surface of the article, a nickel-tungsten-boron alloy layer deposited on the nickel layer, and a refractory metal compound, preferably zirconium nitride, deposited on the nickel-tungsten-boron alloy layer. The coating provides the color of polished brass to the article and also provides abrasion and corrosion protection.Type: GrantFiled: November 30, 1994Date of Patent: December 26, 1995Assignee: Baldwin Hardware CorporationInventors: Stephen R. Moysan, III, Rolin W. Sugg
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Patent number: 5478660Abstract: An article is coated with a multilayer coating comprising a nickel layer deposited on the surface of the article, a nickel-tungsten-boron alloy layer deposited on the nickel layer, and a refractory metal compound, preferably zirconium nitride, deposited on the nickel-tungsten-boron layer. The coating provides the color of polished brass to the article and also provides abrasion and corrosion protection.Type: GrantFiled: November 30, 1994Date of Patent: December 26, 1995Assignee: Baldwin Hardware CorporationInventors: Stephen R. Moysan, III, Rolin W. Sugg
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Patent number: 5476724Abstract: An article is coated with a multilayer coating comprising a nickel layer deposited on the surface of the article, a nickel-tungsten-boron alloy layer deposited on the nickel layer, a refractory metal, preferably zirconium, strike layer deposited on the nickel-tungsten-boron alloy layer, and a refractory metal compound, preferably zirconium nitride, deposited on the refractory metal strike layer. The coating provides the color of polished brass to the article and also provides abrasion and corrosion protection.Type: GrantFiled: October 26, 1994Date of Patent: December 19, 1995Assignee: Baldwin Hardware CorporationInventors: Stephen R. Moysan, III, Rolin W. Sugg
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Patent number: 5472794Abstract: Composite structures having a higher density, stronger reinforcing niobium based alloy embedded within a lower density, lower strength niobium based alloy are provided. The matrix is preferably an alloy having a niobium and titanium base according to the expressions:Nb.sub.balance -Ti.sub.27-40.5 -Al.sub.4.5-10.5 -Hf.sub.1.5-5.5 -Cr.sub.4.5-7.9 -V.sub.0-6,orNb.sub.balance -Ti.sub.27-40.5 -Al.sub.4.5-10.5 -Hf.sub.1.5-5.5 -Cr.sub.4.5-7.9 -V.sub.0-6 -Zr.sub.0-1 C.sub.0-0.5.The reinforcement may be in the form of strands of the higher strength, higher temperature niobium based alloy. The same crystal form is present in both the matrix and the reinforcement and is specifically body centered cubic crystal form.Type: GrantFiled: June 27, 1994Date of Patent: December 5, 1995Assignee: General Electric CompanyInventors: Melvin R. Jackson, Mark G. Benz, John R. Hughes
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Patent number: 5464603Abstract: A method is provided for removing iodide from aqueous solutions in which the iodide is converted to iodine. The porous granules of the polyvalent metal chelating resin containing zirconium peroxide bound to the chelating groups thereof is contacted with the aqueous iodide solution. The iodine is formed within the granules and retained therein, permitting the aqueous solution to be separated to create iodine. This iodine can be recovered by organic solvent elution. The oxidative capacity of the resin granules has been reduced, it can be regenerated after removal of the obtained iodine by contacting the resin granules with aqueous hydrogen peroxide.Type: GrantFiled: September 9, 1994Date of Patent: November 7, 1995Assignee: Kansas State University Research FoundationInventors: George L. Marchin, Jack L. Lambert
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Patent number: 5460793Abstract: Metal silicide targets are provided for sputtering which have a density of at least 99%, no more than one coarse silicon phase 10 .mu.m or larger in size that appears, per square millimeter, on the sputter surface, and an oxygen content of at most 150 ppm. They are made by a method which comprises finely grinding a synthesized silicide powder, vacuum annealing the finely ground powder in a hot press die without the application of pressure, and thereafter compacting and sintering the compact to a density of at least 99% by hot pressing. Alternatively, the finely ground powder is vacuum annealed as a presintered body at a density ratio of 50 to 75%, and thereafter is compacted and sintered.Type: GrantFiled: April 7, 1994Date of Patent: October 24, 1995Assignee: Japan Energy CorporationInventors: Osamu Kano, Yasuhiro Yamakoshi, Junichi Anan, Koichi Yasui
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Patent number: 5458674Abstract: A process is disclosed for separating HF from organics by passing a mixture of HF and organics through a column or bed containing a polymer which sorbs the HF leaving an essentially pure organic stream. The HF may be recovered from the polymer, or the organics may be recovered with reduced HF concentration. The HF and organics may form an azeotropic or azeotrope-like mixture.Type: GrantFiled: July 25, 1994Date of Patent: October 17, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Domenic J. Barsotti
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Patent number: 5457267Abstract: A process for disposing of bromofluorocarbons, bromochlorofluorocarbons, or mixtures of any of bromofluorocarbons, bromochlorofluorocarbons, fluorocarbons, or chlorofluorocarbons. The process comprises thermally cleaving halons, halon-containing fluorocarbons, or halon containing chlorofluorocarbons, cooling the resulting gas stream, oxidizing the resulting hydrogen bromide to bromine by feeding excess elemental chlorine into the gas stream, absorbing the resulting HF or HCl from the gas stream with recovery of hydrofluoric acid or hydrochloric acid, and finally separating elemental bromine and chlorine from each other by distillation or reducing both to give the salts.Type: GrantFiled: March 25, 1993Date of Patent: October 10, 1995Assignee: Hoechst AktiengesellschaftInventors: Rolf-Michael Jansen, Siegismut Hug, Hans-Matthias Deger
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Patent number: 5437854Abstract: Zirconium tetrachloride containing hafnium tetrachloride is selectively reduced with liquid metallic tin to produce zirconium trichloride. The hafnium tetrachloride is then separated as a vapor from a slurry of zirconium trichloride and other solids, including stannous dichloride, in liquid metallic tin.Type: GrantFiled: June 27, 1994Date of Patent: August 1, 1995Assignee: Westinghouse Electric CorporationInventors: Roy G. Walker, Carlos L. Aguilar
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Patent number: 5427866Abstract: A coated article comprises a base article having a substrate made of a material selected from the group consisting of a nickel-base alloy and a cobalt-base alloy, an intermediate metallic coating structure, and a thermal barrier coating. The intermediate metallic coating structure may be a protective layer of platinum, rhodium, or palladium on the base article, with no bond coat. The intermediate metallic coating may also be a bond coat, either oxidized or unoxidized, with a protective layer of platinum, rhodium, or palladium thereon. The protective layer typically partially interdiffuses with the underlying metallic structure.Type: GrantFiled: March 28, 1994Date of Patent: June 27, 1995Assignee: General Electric CompanyInventors: Bangalore A. Nagaraj, William B. Connor, Richard W. Jendrix, David J. Wortman, Larry W. Plemmons
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Patent number: 5425930Abstract: A process for producing microspheres of silica having a maximum diameter of at least 2.5 .mu.m particularly about 2.5 .mu.m to 10 .mu.m from the hydrolysis of a silica precursor, such as a tetraalkoxysilane, which is characterized by employing precursor solutions and feed rates which initially yield a two-phase reaction mixture and beginning the hydrolysis reaction with solutions cooled below ambient temperatures, preferably below about 10.degree. C. Either monodisperse or polydisperse microspheres may be formed.Type: GrantFiled: September 17, 1993Date of Patent: June 20, 1995Assignee: AlliedSignal Inc.Inventor: David J. Anderson
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Patent number: 5426001Abstract: Composite structures having a higher density, stronger reinforcing niobium based alloy embedded within a lower density, lower strength niobium based cladding alloy are provided. The cladding is preferably an alloy having a niobium and titanium base according to the expression:Nb.sub.balance --Ti.sub.40-48 --Al.sub.12-22 --Hf.sub.0.5-6.The reinforcement may be in the form of plates, sheets or rods of the higher strength, higher temperature niobium based reinforcing alloy. The same crystal form is present in both the matrix and the reinforcement and is specifically body centered cubic crystal form.Type: GrantFiled: September 30, 1992Date of Patent: June 20, 1995Assignee: General Electric CompanyInventors: Melvin R. Jackson, Mark G. Benz, John R. Hughes
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Patent number: 5419971Abstract: An article having a substrate is protected by a thermal barrier coating system. An interfacial layer contacts the upper surface of the substrate. The interfacial layer may comprise a bond coat only, or a bond coat and an overlay coat. The interfacial layer has on its upper surface a preselected, controllable pattern of three-dimensional features, such as grooves in a parallel array or in two angularly offset arrays. The features are formed by an ablation process using an ultraviolet laser such as an excimer laser. A ceramic thermal barrier coating is deposited over the pattern of features on the upper surface of the interfacial layer.Type: GrantFiled: March 3, 1993Date of Patent: May 30, 1995Assignee: General Electric CompanyInventors: David W. Skelly, Bangalore A. Nagaraj, David J. Wortman, David V. Rigney, Seetha R. Mannava, Rudolfo Viguie, Robert W. Bruce, Warren A. Nelson, Curtis A. Johnson, Bhupendra K. Gupta
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Patent number: 5413874Abstract: An article is coated with a multilayer coating comprising a nickel layer deposited on the surface of the article, a nickel-tungsten-boron alloy layer deposited on the nickel layer, a refractory metal, preferably zirconium, strike layer deposited on the nickel-tungsten-boron alloy layer, and a refractory metal compound, preferably zirconium nitride, deposited on the refractory metal strike layer. The coating provides the color of polished brass to the article and also provides abrasion and corrosion protection.Type: GrantFiled: June 2, 1994Date of Patent: May 9, 1995Assignee: Baldwin Hardware CorporationInventors: Stephen R. Moysan, III, Rolin W. Sugg
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Patent number: 5411726Abstract: The invention relates to a process for purifying industrial anhydrous hydrogen fluoride by means of oxygen difluoride.Type: GrantFiled: January 31, 1994Date of Patent: May 2, 1995Assignee: Bayer AGInventors: Andreas Bulan, Rainer Weber, Hans-Dieter Block, Hans-Heinrich Moretto
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Patent number: 5407754Abstract: Reinforcement potassium hexatitanate fiber having an average fiber length of 8-30 .mu.m, an average fiber diameter of 0.2-0.7 .mu.m and a specific surface area of 2-4 m.sup.2 /g and a composite materials comprising the whiskers and a light alloy or thermoplastic resin. Also disclosed a process for producing the whiskers.Type: GrantFiled: June 19, 1992Date of Patent: April 18, 1995Assignee: Titan Kogyo Kabushiki KaishaInventors: Hidefumi Harada, Yasuo Inoue, Eiji Sadanaga
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Patent number: 5407656Abstract: The present invention relates to a method for producing chlorine dioxide (ClO.sub.2) disinfecting solution which preferably minimizes the amount of residual chlorite ion (ClO.sub.2 -) so that the disinfecting solution can be used in a number of industries, preferably including the food, food processing, drinking water, pharmaceutical production, medical and dental industries. Chlorine dioxide generating solutions which are substantially corrosion free as well as gel formulations are also disclosed.Type: GrantFiled: April 22, 1994Date of Patent: April 18, 1995Assignee: ARCO Research Co., Inc.Inventor: Habib Roozdar
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Patent number: 5405708Abstract: Composite structures having a higher density, stronger reinforcing niobium based alloy embedded within a lower density, lower strength niobium based cladding alloy are provided. The cladding is preferably an alloy having a niobium and titanium base according to the expression:Nb.sub.balance -Ti.sub.35-45 -Hf.sub.10-15.The reinforcement may be in the form of plates, sheets or rods of the higher strength, higher temperature niobium based reinforcing alloy. The same crystal form is present in both the matrix and the reinforcement and is specifically body centered cubic crystal form.Type: GrantFiled: September 30, 1992Date of Patent: April 11, 1995Assignee: General Electric CompanyInventors: Melvin R. Jackson, Mark G. Benz, John R. Hughes