Patents by Inventor Wei-Fang Anne Su

Wei-Fang Anne Su 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).

  • Methods for making ecologically compatible water-based mullite sols and mullite compositions
    Patent number: 5932168
    Abstract: This invention relates to novel ecologically compatible water-based stable mullite precursor sols, mullite composites, and methods for making the same. The mullite precursor sols are synthesized using tetraethoxysilane and aluminum nitrate in water. The tetraethoxysilane is hydrolyzed with water and ammonium hydroxide catalyst to make a silica sol, which is then quenched with an aqueous solution of aluminum nitrate. The mullite precursor sols of the invention may be used to make highly densified ceramic composites.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: August 3, 1999
    Assignee: Siemens Westinghouse Power Corporation
    Inventor: Wei-Fang Anne Su