Patents by Inventor Sheila Farrokhalaee Kia
Sheila Farrokhalaee Kia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7122107Abstract: A process is disclosed for stabilizing certain colored anodized coating on aluminum articles against degradation by ultraviolet radiation. Anodized articles colored by an electrolytic or interference process can thereafter be stabilized by heat treating them at temperatures of the order of 350° F. for a period of an hour or so. The process is particularly useful for use on electrolytically colored, anodized vehicular external body panels made from suitably formable sheet metal aluminum alloys.Type: GrantFiled: August 28, 2003Date of Patent: October 17, 2006Assignee: General Motors CorporationInventors: Sheila Farrokhalaee Kia, Hong-Hsiang Kuo, Yar-Ming Wang
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Patent number: 7018521Abstract: A method is disclosed for forming a clear anodized coating on an aluminum base alloy containing more than three percent by weight magnesium. The alloy surface to be anodized is treated with an aqueous solution of a mineral acid such as sulfuric acid (10 to 20%), nitric acid (10 to 30%) or phosphoric acid (40 to 80%) under the influence of a relatively low voltage direct current. This treatment suitably reduces the magnesium content of the surface layer and, subsequently, a relatively low current density anodization in sulfuric acid produces the clear coating. The clear coating may then be colored by known processes.Type: GrantFiled: September 27, 2001Date of Patent: March 28, 2006Assignee: General Motors CorporationInventors: Yar-Ming Wang, Hong-Hsiang Kuo, Sheila Farrokhalaee Kia
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Patent number: 6971785Abstract: A powder paint canister assembly includes a canister body having a color changer manifold, a purge ring, and at least one venturi pump attached thereto. The canister body interior includes a fluidization plate and a fluidization distribution plate adjacent a preferably oval inlet to the venturi pump for supplying powder material from the canister. The color changer manifold includes a plurality of manifold modules each having two pinch valve assemblies with quick disconnect inlet fittings for supplying powders of different colors. The purge air ring supplies purge air to the canister through a plurality of apertures of different orientations.Type: GrantFiled: July 16, 2003Date of Patent: December 6, 2005Assignee: General Motors CorporationInventors: Christopher M. Murphy, Sheila Farrokhalaee Kia, Gunnar Van Der Steur, Jeffrey A. Wallace
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Patent number: 6945470Abstract: An apparatus and method for supplying multi-color powder paint material to an applicator in which at least one canister is used. This invention can be utilized with multiple or with a single color of powder paint material. The preferred system includes two canisters that alternate in supplying powder to the applicator. While one canister supplies powder to the applicator, the other canister is purged of the previous material and filled with the next material to be sprayed. The canister has an interior sized to store a predetermined quantity of powder material. During operation, a powder transfer pump and a color changer transfer powder material from a storage container/hopper to the canister interior. A venturi pump then supplies the applicator with powder. After the object is painted, purge air is opened and the canister is purged of the previous material. The canister is then ready to start another cycle.Type: GrantFiled: August 25, 2004Date of Patent: September 20, 2005Assignee: General Motors CorporationInventors: Sheila Farrokhalaee Kia, Christopher M. Murphy, Brian Thadeus Prylon, Frank P. Rauch, Fred I. Blair
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Patent number: 6901989Abstract: In the lost foam casting of aluminum, coating a fugitive pattern with a refractory coating containing a thermally stable, water-insoluble, acid-gasifiable (e.g. CaCO3) compound, and contacting the casting, with the coating thereon, with an acid to dissociate and gasify the compound and rupture the coating. Preferably, any thermal degradation products from the pattern residing in the coating are neutralized to promote wetting of the coating.Type: GrantFiled: June 14, 1999Date of Patent: June 7, 2005Assignee: General Motors CorporationInventors: Nicholas Edward Sargent, June-Sang Siak, Mei Cai, Thomas C. Pederson, Sheila Farrokhalaee Kia
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Patent number: 6884336Abstract: A method for the color finishing of aluminum frames and other components for motor vehicles comprises anodizing an aluminum surface and coloring the aluminum surface. The coloring of the aluminum surface may be effected by an adsorptive coloring process, an electrolytic coloring process, an interference coloring process, or any combination of the foregoing processes.Type: GrantFiled: January 6, 2003Date of Patent: April 26, 2005Assignee: General Motors CorporationInventors: Sheila Farrokhalaee Kia, Hong-Hsiang Kuo, Yar-Ming Wang
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Patent number: 6881241Abstract: Cellular metal foam having closed cell walls is produced by introducing gas bubbles of suitable size and at a suitable rate below the surface of an otherwise non-stirred or non-agitated molten metal bath. For example, aluminum-silicon alloy, including silicon carbide foam stabilization particles has been thus processed into cellular metal of, as low as, one to two percent relative density and with good cell walls and quite regular cell size.Type: GrantFiled: November 18, 2002Date of Patent: April 19, 2005Assignee: General Motors CorporationInventors: Carlton Dwight Fuerst, Sheila Farrokhalaee Kia, Thomas C. Pederson
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Patent number: 6866945Abstract: An anodized aluminum alloy comprises an aluminum alloy comprising magnesium in an amount greater than 3 weight percent based on the total weight of the aluminum alloy; and a clear porous oxide layer having a thickness greater than about 5 micrometers disposed on and into a surface of the aluminum alloy, wherein the anodized aluminum alloy has a surface gloss value greater than about 40 gloss units as measured on a gloss meter at dual illumination angles of 60° and 85°.Type: GrantFiled: January 6, 2003Date of Patent: March 15, 2005Assignee: General Motors CorporationInventors: Hong-Hsiang Kuo, Yar-Ming Wang, Sheila Farrokhalaee Kia
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Patent number: 6830414Abstract: An apparatus and method for supplying multi-color powder paint material to an applicator in which at least one canister is used. This invention can be utilized with multiple or with a single color of powder paint material. The preferred system includes two canisters that alternate in supplying powder to the applicator. While one canister supplies powder to the applicator, the other canister is purged of the previous material and filled with the next material to be sprayed. The canister has an interior sized to store a predetermined quantity of powder material. During operation, a powder transfer pump and a color changer transfer powder material from a storage container/hopper to the canister interior. A venturi pump then supplies the applicator with powder. After the object is painted, purge air is opened and the canister is purged of the previous material. The canister is then ready to start another cycle.Type: GrantFiled: March 27, 2003Date of Patent: December 14, 2004Assignee: General Motors CorporationInventors: Sheila Farrokhalaee Kia, Christopher M. Murphy, Brian Thadeus Prylon, Frank P. Rauch, Fred I. Blair
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Publication number: 20040191005Abstract: An apparatus and method for supplying multi-color powder paint material to an applicator in which at least one canister is used. This invention can be utilized with multiple or with a single color of powder paint material. The preferred system includes two canisters that alternate in supplying powder to the applicator. While one canister supplies powder to the applicator, the other canister is purged of the previous material and filled with the next material to be sprayed. The canister has an interior sized to store a predetermined quantity of powder material. During operation, a powder transfer pump and a color changer transfer powder material from a storage container/hopper to the canister interior. A venturi pump then supplies the applicator with powder. After the object is painted, purge air is opened and the canister is purged of the previous material. The canister is then ready to start another cycle.Type: ApplicationFiled: March 27, 2003Publication date: September 30, 2004Inventors: Sheila Farrokhalaee Kia, Christopher M. Murphy, Brian Thadeus Prylon, Frank P. Rauch, Fred I. Blair
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Publication number: 20040129574Abstract: A method for the color finishing of aluminum frames and other components for motor vehicles comprises anodizing an aluminum surface and coloring the aluminum surface. The coloring of the aluminum surface may be effected by an adsorptive coloring process, an electrolytic coloring process, an interference coloring process, or any combination of the foregoing processes.Type: ApplicationFiled: January 6, 2003Publication date: July 8, 2004Inventors: Sheila Farrokhalaee Kia, Hong-Hsiang Kuo, Yar-Ming Wang
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Publication number: 20040093987Abstract: Cellular metal foam having closed cell walls is produced by introducing gas bubbles of suitable size and at a suitable rate below the surface of an otherwise non-stirred or non-agitated molten metal bath. For example, aluminum-silicon alloy, including silicon carbide foam stabilization particles has been thus processed into cellular metal of, as low as, one to two percent relative density and with good cell walls and quite regular cell size.Type: ApplicationFiled: November 18, 2002Publication date: May 20, 2004Inventors: Carlton Dwight Fuerst, Sheila Farrokhalaee Kia, Thomas C. Pederson
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Patent number: 6699419Abstract: A molding process that uses a textured interfacial layer to isolate the surface of a mold from the surface of a composite article produced with the mold. A solution is deposited on the mold surface to form the interfacial layer, whose surface opposite the mold is textured. The texture of the interfacial layer is then transferred to the surface of the composite article produced with the mold. After demolding, the interfacial layer adheres to the article as a protective coating, but can be readily removed from the article to expose an underlying textured surface of the article.Type: GrantFiled: June 5, 2000Date of Patent: March 2, 2004Assignee: General Motors CorporationInventors: Hamid Ghavami Kia, Sheila Farrokhalaee Kia, Joseph C. Simmer, Terrence James Wathen, Mark A. Buffa
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Publication number: 20030057100Abstract: A method is disclosed for forming a clear anodized coating on an aluminum base alloy containing more than three percent by weight magnesium. The alloy surface to be anodized is treated with an aqueous solution of a mineral acid such as sulfuric acid (10 to 20%), nitric acid (10 to 30%) or phosphoric acid (40 to 80%) under the influence of a relatively low voltage direct current. This treatment suitably reduces the magnesium content of the surface layer and, subsequently, a relatively low current density anodization in sulfuric acid produces the clear coating. The clear coating may then be colored by known processes.Type: ApplicationFiled: September 27, 2001Publication date: March 27, 2003Inventors: Yar-Ming Wang, Hong-Hsiang Kuo, Sheila Farrokhalaee Kia