Patents by Inventor Roger Y.-K. Leung

Roger Y.-K. Leung 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).

  • Method of preparing fiber reinforced glass composites
    Patent number: 5486250
    Abstract: An improved fiber reinforced glass composite includes refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: January 23, 1996
    Assignee: AlliedSignal Inc.
    Inventors: Roger Y.-K. Leung, Stephen T. Gonczy