Patents by Inventor Duen-Wh Hua

Duen-Wh 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).

  • Titanium dioxide pigment having improved light stability
    Patent number: 7686882
    Abstract: In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: March 30, 2010
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Duen-Wh Hua, Fu-Chu Wen
  • Titanium Dioxide Pigment Having Improved Light Stability
    Publication number: 20080047471
    Abstract: In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints.
    Type: Application
    Filed: September 7, 2007
    Publication date: February 28, 2008
    Applicant: Millennium Inorganic Chemicals, Inc.
    Inventors: Duen-Wh Hua, Fu-Chu Wen
  • Titanium dioxide pigment having improved light stability
    Patent number: 7285162
    Abstract: In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: October 23, 2007
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Duen-Wh Hua, Fu-Chu Wen
  • Titanium dioxide pigment having improved light stability
    Publication number: 20050123761
    Abstract: In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 9, 2005
    Applicant: Millennium Inorganic Chemicals, Inc.
    Inventors: Duen-Wh Hua, Fu-Chu Wen