Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5188894 | Composite carbon fiber and process for preparing same | Yasuhiro Yamada, Haruki Yamasaki, Susumu Shimizu | 1993-02-23 |
| 4873071 | Graphite structures and method for production thereof | Yasuhiro Yamada, Takeshi Imamura, Masaki Fujii, Masanori Minohata | 1989-10-10 |
| 4818449 | Process to prevent crack formation in the production of carbon fibers | Yasuhiro Yamada, Takeshi Imamura, Masatoshi Tsuchitani, Ryoichi Nakajima | 1989-04-04 |
| 4606808 | Method for the preparation of pitches for spinning carbon fibers | Yasuhiro Yamada, Takeshi Imamura, Masao Shibata, Seiji Arita | 1986-08-19 |
| 4590055 | Pitch-based carbon fibers and pitch compositions and precursor fibers therefor | Yasuhiro Yamada, Takeshi Imamura, Toru Sawaki, Hideharu Sasaki | 1986-05-20 |
| 4189373 | Process for the production of ashless liquid fuels | Yasuhiro Yamada, Hitoo Kakiyama | 1980-02-19 |