Patents by Inventor Ching-Feng Chang

Ching-Feng Chang 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).

  • Redistribution of organohalosilanes utilizing heat treated crystalline alumina catalysts
    Patent number: 4889838
    Abstract: A method of redistributing a mixture of organohalosianes, particularly methylchlorosilanes by contacting said mixture with a heat treated crystalline gamma alumina or eta alumina catalyst.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: December 26, 1989
    Assignee: Union Carbide Corporation and Plastics Company Inc.
    Inventors: Kenrick M. Lewis, Ching-Feng Chang
  • Angle gauge
    Patent number: D426474
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: June 13, 2000
    Inventor: Ching-Feng Chang