Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5202293 | Carbon fiber reinforced carbon | Mamoru Okamoto, Hirohisa Miura, Shoichi Tsuchiya, Hirohumi Michioka, Masatoshi Kubota +2 more | 1993-04-13 |
| 4323257 | Piston ring with a Cr-C-Fe inlaid ring in its outer surface, and a method of making it | Katsumi Kondo, Syouzi Miyazaki | 1982-04-06 |