Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5240613 | Process for regenerating clogged filters | Masatoshi Tsuchitani, Ryoichi Nakajima, Kensuke Iuchi, Shintaro Hasebe | 1993-08-31 |
| 5182011 | Process for preparing pitches | Masatoshi Tsuchitani, Makoto Tamura, Kiyotaka Suzuki, Shuji Okada, Ryoichi Nakajima | 1993-01-26 |
| 5091072 | Process for preparing pitches | Masatoshi Tsuchitani, Makoto Tamura, Kiyotaka Suzuki, Sjuji Okada, Ryoichi Nakajima | 1992-02-25 |
| 4925547 | Process for producing pitch for the manufacture of high-performance carbon fibers together with pitch for the manufacture of general-purpose carbon fibers | Masatoshi Tsuchitani, Hiroshi Morijiri, Kiyotaka Suzuki | 1990-05-15 |
| 4874502 | Method of purifying coal tars for use in the production of carbon products | Masatoshi Tsuchitani | 1989-10-17 |
| 4820401 | Process for the preparation of mesophase pitches | Masatoshi Tsuchitani, Ryoichi Nakajima | 1989-04-11 |
| 4789456 | Process for preparing mesophase pitches | Masatoshi Tsuchitani, Ryoichi Nakajima | 1988-12-06 |