Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6419997 | Guide bush and method of forming hard carbon film over the inner surface of the guide bush | Osamu Sugiyama, Ryota Koike, Takashi Toida, Sosaku Kimura, Kunihiko Kokubo | 2002-07-16 |
| 6337000 | Guide bush and method of forming diamond-like carbon film over the guide bush | Osamu Sugiyama, Ryota Koike, Takashi Toida | 2002-01-08 |