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).

  • Publication number: 20090101015
    Abstract: 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: Application
    Filed: October 17, 2007
    Publication date: April 23, 2009
    Inventor: Duen-Wu Hua
  • Publication number: 20090071895
    Abstract: 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: Application
    Filed: June 27, 2007
    Publication date: March 19, 2009
    Inventors: Duen-Wu Hua, Michael C. Withiam, Francis R. W. Godwin, Fitzgerald A. Sinclair
  • Publication number: 20090004089
    Abstract: 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: Application
    Filed: June 27, 2007
    Publication date: January 1, 2009
    Inventors: Duen-Wu Hua, Michael C. Withiam, Francis R. W. Godwin, Fitzgerald A. Sinclair
  • Publication number: 20090001014
    Abstract: 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: Application
    Filed: June 27, 2007
    Publication date: January 1, 2009
    Inventors: Duen-Wu Hua, Gary W. Loock
  • Patent number: 7455791
    Abstract: 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: Grant
    Filed: December 14, 2004
    Date of Patent: November 25, 2008
    Assignee: J.M. Huber Corporation
    Inventors: Duen-Wu Hua, Frands Nielsen
  • Publication number: 20070258922
    Abstract: 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: Application
    Filed: November 1, 2004
    Publication date: November 8, 2007
    Inventors: Mark Wozniak, Duen-Wu Hua, Karl Gallis
  • Publication number: 20070253987
    Abstract: 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: Application
    Filed: November 1, 2004
    Publication date: November 1, 2007
    Inventors: Mark Wozniak, Duen-Wu Hua, Karl Gallis
  • Publication number: 20070154412
    Abstract: 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: Application
    Filed: December 30, 2005
    Publication date: July 5, 2007
    Inventors: Nolan Lee Phillips, Duen-Wu Hua, William C. Fultz, Patrick Donald McGill
  • Publication number: 20070154413
    Abstract: 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: Application
    Filed: December 30, 2005
    Publication date: July 5, 2007
    Inventors: Nolan Lee Phillips, Duen-Wu Hua, William C. Fultz, Patrick Donald McGill
  • Publication number: 20070154602
    Abstract: 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: Application
    Filed: December 30, 2005
    Publication date: July 5, 2007
    Inventors: Michael C. Withiam, Nolan Lee Phillips, Duen-Wu Hua, William C. Fultz, Parick Donald McGill
  • Patent number: 6913634
    Abstract: 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: Grant
    Filed: February 14, 2003
    Date of Patent: July 5, 2005
    Assignee: J. M. Huber Corporation
    Inventors: Duen-Wu Hua, Frands Nielsen
  • Publication number: 20050092962
    Abstract: 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: Application
    Filed: December 14, 2004
    Publication date: May 5, 2005
    Inventors: Duen-Wu Hua, Frands Nielsen
  • Publication number: 20040202601
    Abstract: The present invention provides methods and compositions comprising inorganic solids for use as pigments in paints, papers and plastics.
    Type: Application
    Filed: April 30, 2004
    Publication date: October 14, 2004
    Applicant: Millennium Inorganic Chemicals, Inc.
    Inventors: Fu-Chu Wen, Duen-Wu Hua, Deborah E. Busch
  • Publication number: 20040162006
    Abstract: 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: Application
    Filed: February 14, 2003
    Publication date: August 19, 2004
    Inventors: Duen-Wu Hua, Frands Nielsen
  • Patent number: 6743286
    Abstract: The present invention provides methods and compositions comprising inorganic solids for use as pigments in paints, papers and plastics.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: June 1, 2004
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Fu-Chu Wen, Duen-Wu Hua, Deborah E. Busch
  • Patent number: 6569920
    Abstract: 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: Grant
    Filed: August 16, 2000
    Date of Patent: May 27, 2003
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Fu-Chu Wen, Duen-Wu Hua
  • Publication number: 20030024437
    Abstract: The present invention provides methods and compositions comprising inorganic solids for use as pigments in paints, papers and plastics.
    Type: Application
    Filed: August 1, 2001
    Publication date: February 6, 2003
    Inventors: Fu-Chu Wen, Duen-Wu Hua, Deborah E. Busch