Patents by Inventor Rika Takatsu

Rika Takatsu 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).

  • Thermosetting copolymers, silicon carbide-based fiber and processes for producing same
    Patent number: 5292830
    Abstract: A thermoplastic silicon-containing polymer, which may be a precursor of SiC, and which can be transformed to a thermosetting polymer by copolymerizing it with a thermosetting perhydropolysilazane or polyborosilazane.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: March 8, 1994
    Assignee: Tonen Corporation
    Inventors: Osamu Funayama, Tomohiro Kato, Rika Takatsu, Yuuji Tashiro, Toshihide Kishi, Takayuki Date, Takeshi Isoda