Patents by Inventor Hae-Weon Lee

Hae-Weon Lee 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).

  • Alumina-or alumina/zirconia-silicon carbide whisker ceramic composites and methods of manufacture
    Patent number: 5009822
    Abstract: A SiC whisker-reinforced ceramic article produced by subjecting the SiC whiskers to acid- and/or base-washing; subjecting ceramic particles and SiC whiskers to fluid classification; forming a suspension of the powdered ceramic and SiC whiskers; consolidating the suspension to form a green compact; optionally infiltrating the green compact with an aluminum compound which is a precursor to Al.sub.2 O.sub.3, and pressureless sintering the green compact to produce an SiC whisker-reinforced composite having high relative density at high SiC whisker loading.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: April 23, 1991
    Assignee: University of Florida
    Inventors: Michael D. Sacks, Hae-Weon Lee