Patents by Inventor Wu Hua
Wu Hua 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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Publication number: 20090101015Abstract: Filtration materials comprising heat-treated metal-doped precipitated silica or silica gel materials with sulfur-containing functional silane surface treatments are provided. Such materials exhibit excellent mercury removal properties from flue gas emissions through the trapping of mercury vapors within a smokestack (or other like site). The metal dopant and the sulfur-containing functional silane components applied to the surface of the target metal-doped gels effectuate the desired mercury reactions to permit capture thereof. In combination, such components permit versatile utilization in either a fixed bed configuration or through a dynamic mercury removal procedure. Methods of using and specific filter apparatuses are also encompassed within this invention.Type: ApplicationFiled: October 17, 2007Publication date: April 23, 2009Inventor: Duen-Wu Hua
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Publication number: 20090071895Abstract: New silica gel materials and novel methods of producing such are provided. The method itself entails a manner of mixing the reactants together in a one-pot process such that the time required for aging is reduced without compromising the ability to target pore size production. In such a way, the pH of the reaction drives pore size development, thereby permitting a more efficient process to be followed in terms of expensive drying/heating steps being reduced timewise, if not altogether. Furthermore, in one embodiment, the resultant gel materials exhibit a certain pore size minimum while simultaneously exhibiting a degree of softness heretofore unavailable. As such, not only is this novel method more efficient in silica gel manufacture, but the resultant materials are completely novel as well. The gel materials made therefrom may be utilized in a variety of different end uses, such as cooking oil filtration, soft skin cleansers, dental abrasives, and the like.Type: ApplicationFiled: June 27, 2007Publication date: March 19, 2009Inventors: Duen-Wu Hua, Michael C. Withiam, Francis R. W. Godwin, Fitzgerald A. Sinclair
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Publication number: 20090004089Abstract: New silica gel materials and novel methods of producing such are provided. The method itself entails a manner of mixing the reactants together in a one-pot process such that the time required for aging is reduced without compromising the ability to target pore size production. In such a way, the pH of the reaction drives pore size development, thereby permitting a more efficient process to be followed in terms of expensive drying/heating steps being reduced timewise, if not altogether. Furthermore, in one embodiment, the resultant gel materials exhibit a certain pore size minimum while simultaneously exhibiting a degree of softness heretofore unavailable. As such, not only is this novel method more efficient in silica gel manufacture, but the resultant materials are completely novel as well. The gel materials made therefrom may be utilized in a variety of different end uses, such as cooking oil filtration, soft skin cleansers, dental abrasives, and the like.Type: ApplicationFiled: June 27, 2007Publication date: January 1, 2009Inventors: Duen-Wu Hua, Michael C. Withiam, Francis R. W. Godwin, Fitzgerald A. Sinclair
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Publication number: 20090001014Abstract: New silica gel materials and novel methods of producing such are provided. The method itself entails a manner of mixing the reactants together in a one-pot process such that the time required for aging is reduced without compromising the ability to target pore size production. In such a way, the pH of the reaction drives pore size development, thereby permitting a more efficient process to be followed in terms of expensive drying/heating steps being reduced timewise, if not altogether. Furthermore, in one embodiment, the resultant gel materials exhibit a certain pore size minimum while simultaneously exhibiting a degree of softness heretofore unavailable. As such, not only is this novel method more efficient in silica gel manufacture, but the resultant materials are completely novel as well. The gel materials made therefrom may be utilized in a variety of different end uses, such as cooking oil filtration, soft skin cleansers, dental abrasives, and the like.Type: ApplicationFiled: June 27, 2007Publication date: January 1, 2009Inventors: Duen-Wu Hua, Gary W. Loock
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Patent number: 7455791Abstract: An aqueous chemical mechanical polishing slurry is provided that comprises precipitated amorphous silica abrasive particles treated with acidic aluminum. Also provided is a method of polishing an electronic component substrate comprising the steps of: a) obtaining an electronic component substrate, the electronic component substrate having an insulating film deposited over it, an interconnection pattern formed in the insulating film, and interconnection material deposited on the insulated film and in the interconnection pattern; and b) polishing the interconnection material until a surface of said insulating film is exposed by using an aqueous chemical mechanical polishing slurry comprising: precipitated amorphous silica abrasive particles treated with acidic aluminum.Type: GrantFiled: December 14, 2004Date of Patent: November 25, 2008Assignee: J.M. Huber CorporationInventors: Duen-Wu Hua, Frands Nielsen
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Publication number: 20070258922Abstract: Unique pigments that exhibit excellent light diffusion when applied to a person's skin within an appropriate medium as well as acceptable feel during such application are provided. To be most efficacious for this application, such pigments should meet specific criteria being a proper particle size, having irregular structure (i.e. not smooth), and a non-spherical shape. In such a manner, the subject pigments effectuate the desired ability to diffuse light when applied to skin (in a film of acceptable cosmetic composition) such that optical blurring takes place thereby preventing the appearance of wrinkles. The shape, particle size and irregularity of the pigments are necessary to permit maximum light diffusion effects. The particle size and particle size range also necessarily provides a feel that is sufficiently soft for skin applications. Specific types of pigments, as well as cosmetic formulations including such novel materials are also encompassed within this invention.Type: ApplicationFiled: November 1, 2004Publication date: November 8, 2007Inventors: Mark Wozniak, Duen-Wu Hua, Karl Gallis
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Publication number: 20070253987Abstract: Unique pigments that exhibit excellent light diffusion when applied to a person's skin within an appropriate medium as well as acceptable feel during such application are provided. To be most efficacious for this application, such pigments should meet specific criteria being a proper particle size, having irregular structure (i.e. not smooth), and a non-spherical shape. In such a manner, the subject pigments effectuate the desired ability to diffuse light when applied to skin (in a film of acceptable cosmetic composition) such that optical blurring takes place thereby preventing the appearance of wrinkles. The shape, particle size and irregularity of the pigments are necessary to permit maximum light diffusion effects. The particle size and particle size range also necessarily provides a feel that is sufficiently soft for skin applications. Specific types of pigments, as well as cosmetic formulations including such novel materials are also encompassed within this invention.Type: ApplicationFiled: November 1, 2004Publication date: November 1, 2007Inventors: Mark Wozniak, Duen-Wu Hua, Karl Gallis
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Publication number: 20070154412Abstract: Unique dentifrices comprising unique abrasive biogenic silica materials are provided. Such compositions exhibit excellent abrasive characteristics, either alone, or in combination with other types of abrasives. In such combinations (with precipitated silica materials, as one example), simultaneously high pellicle film cleaning properties and moderate dentin abrasion levels are possible in order to accord the user a dentifrice that effectively cleans tooth surfaces without detrimentally abrading such surfaces, even at low levels of such biogenic silica additives. Such biogenic silica particles thus surprisingly accord beneficial properties within dentifrice compositions. Encompassed within this invention is the method of utilizing such biogenic silica products within dentifrices, either as the majority abrasive component, or in combination with any other type of commonly used abrasive material.Type: ApplicationFiled: December 30, 2005Publication date: July 5, 2007Inventors: Nolan Lee Phillips, Duen-Wu Hua, William C. Fultz, Patrick Donald McGill
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Publication number: 20070154413Abstract: Unique dentifrices comprising unique abrasive biogenic silica materials are provided. Such compositions exhibit excellent abrasive characteristics, either alone, or in combination with other types of abrasives. In such combinations (with precipitated silica materials, as one example), simultaneously high pellicle film cleaning properties and moderate dentin abrasion levels are possible in order to accord the user a dentifrice that effectively cleans tooth surfaces without detrimentally abrading such surfaces, even at low levels of such biogenic silica additives. Such biogenic silica particles thus surprisingly accord beneficial properties within dentifrice compositions. Encompassed within this invention is the method of utilizing such biogenic silica products within dentifrices, either as the majority abrasive component, or in combination with any other type of commonly used abrasive material.Type: ApplicationFiled: December 30, 2005Publication date: July 5, 2007Inventors: Nolan Lee Phillips, Duen-Wu Hua, William C. Fultz, Patrick Donald McGill
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Publication number: 20070154602Abstract: The treatment of cooking oils and fats with specific types of calcium silicate-based materials to prolong the useful life of such oils and fats within restaurant settings is provided. More particularly, such an invention encompasses the utilization of calcium-based aluminosilicate materials to filter such oils and/or fats or the incorporation of calcium silicate with or within previously utilized cooking oil filter materials (such as magnesium silicate) for the same purpose. Such calcium silicate-based materials and treatments therewith aid to remove greater amounts of free fatty acids after such oils and/or fats have been utilized to fry foodstuffs, as well as reduce the amount of additional oil and/or fat potentially necessary to bring the used oils and/or fats up to a level of permitted further utilization within a restaurant environment.Type: ApplicationFiled: December 30, 2005Publication date: July 5, 2007Inventors: Michael C. Withiam, Nolan Lee Phillips, Duen-Wu Hua, William C. Fultz, Parick Donald McGill
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Patent number: 6913634Abstract: An aqueous chemical mechanical polishing slurry is provided that comprises precipitated amorphous silica abrasive particles treated with acidic aluminum. Also provided is a method of polishing an electronic component substrate comprising the steps of: a) obtaining an electronic component substrate, the electronic component substrate having an insulating film deposited over it, an interconnection pattern formed in the insulating film, and interconnection material deposited on the insulated film and in the interconnection pattern; and b) polishing the interconnection material until a surface of said insulating film is exposed by using an aqueous chemical mechanical polishing slurry comprising: precipitated amorphous silica abrasive particles treated with acidic aluminum.Type: GrantFiled: February 14, 2003Date of Patent: July 5, 2005Assignee: J. M. Huber CorporationInventors: Duen-Wu Hua, Frands Nielsen
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Publication number: 20050092962Abstract: An aqueous chemical mechanical polishing slurry is provided that comprises precipitated amorphous silica abrasive particles treated with acidic aluminum. Also provided is a method of polishing an electronic component substrate comprising the steps of: a) obtaining an electronic component substrate, the electronic component substrate having an insulating film deposited over it, an interconnection pattern formed in the insulating film, and interconnection material deposited on the insulated film and in the interconnection pattern; and b) polishing the interconnection material until a surface of said insulating film is exposed by using an aqueous chemical mechanical polishing slurry comprising: precipitated amorphous silica abrasive particles treated with acidic aluminum.Type: ApplicationFiled: December 14, 2004Publication date: May 5, 2005Inventors: Duen-Wu Hua, Frands Nielsen
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Publication number: 20040202601Abstract: The present invention provides methods and compositions comprising inorganic solids for use as pigments in paints, papers and plastics.Type: ApplicationFiled: April 30, 2004Publication date: October 14, 2004Applicant: Millennium Inorganic Chemicals, Inc.Inventors: Fu-Chu Wen, Duen-Wu Hua, Deborah E. Busch
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Publication number: 20040162006Abstract: An aqueous chemical mechanical polishing slurry is provided that comprises precipitated amorphous silica abrasive particles treated with acidic aluminum. Also provided is a method of polishing an electronic component substrate comprising the steps of: a) obtaining an electronic component substrate, the electronic component substrate having an insulating film deposited over it, an interconnection pattern formed in the insulating film, and interconnection material deposited on the insulated film and in the interconnection pattern; and b) polishing the interconnection material until a surface of said insulating film is exposed by using an aqueous chemical mechanical polishing slurry comprising: precipitated amorphous silica abrasive particles treated with acidic aluminum.Type: ApplicationFiled: February 14, 2003Publication date: August 19, 2004Inventors: Duen-Wu Hua, Frands Nielsen
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Patent number: 6743286Abstract: The present invention provides methods and compositions comprising inorganic solids for use as pigments in paints, papers and plastics.Type: GrantFiled: August 1, 2001Date of Patent: June 1, 2004Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Fu-Chu Wen, Duen-Wu Hua, Deborah E. Busch
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Patent number: 6569920Abstract: The present invention provides slurries and methods of making slurries having improved stability comprising below about 78 weight-percent rutile titanium dioxide based on the total weight of the slurry, an amorphous alumina compound surface treated titanium dioxide, a polyacrylic acid dispersing agent having a molecular weight in the range of from about 2,000 to about 5,000 that is neutralized with a neutralizing agent having a monovalent group, and water; wherein the slurry has a pH of from about 6 to about 8. The slurries of the present invention resist gel formation.Type: GrantFiled: August 16, 2000Date of Patent: May 27, 2003Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Fu-Chu Wen, Duen-Wu Hua
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Publication number: 20030024437Abstract: The present invention provides methods and compositions comprising inorganic solids for use as pigments in paints, papers and plastics.Type: ApplicationFiled: August 1, 2001Publication date: February 6, 2003Inventors: Fu-Chu Wen, Duen-Wu Hua, Deborah E. Busch