Patents by Inventor Winston Kar Heng Seah

Winston Kar Heng Seah 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).

  • Sintered titanium-graphite composite and method of making
    Patent number: 5758253
    Abstract: A process for producing sintered titanium-graphite having improved wear resistance and low frictional characteristics is described. The said process which produces titanium-graphite composites having a triphasic structure with controlled porosity and a graphite lubricating film, comprises sintering a mixture of titanium and graphite powders in which the percentage of graphite may vary from 4 to 8 percent at temperatures from about 800.degree. C. to 1600.degree. C., for about 1/2 to 2 hours, under a compaction pressure of 0.17 to 0.62 MPa. The composites have applications in biomedical engineering and other fields of engineering due to their biocompatibility, strength and improved wear resistance.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: May 26, 1998
    Assignee: National University of Singapore
    Inventors: Swee Hin Teoh, Rajendran Thampuran, James Cho Hong Goh, Winston Kar Heng Seah