Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646669 | Corrosion resistant electrostatic recording head with multiple layers | Toshihide Tanaka, Satoru Hirosaki, Koji UDAGAWA, Yumiko Komori | 1997-07-08 |
| 5643547 | Process for producing carbon fibers | Tomiji Hosotsubo | 1997-07-01 |
| 5641434 | Silicon nitride powder | Takeshi Yamao, Tetsuo Nakayasu | 1997-06-24 |
| 5595718 | Process for producing a crystalline silicon nitride powder | Takeshi Yamao, Yasukazu Kondo, Hideo Nakamura, Tadayuki Mitani | 1997-01-21 |