Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4909923 | Method for hydrogenation of coal tar pitch | Hiroshi Okazaki, Tadashi Komoto, Munekazu Nakamura, Osamu Togari, Noriyuki Yoneda +1 more | 1990-03-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4909923 | Method for hydrogenation of coal tar pitch | Hiroshi Okazaki, Tadashi Komoto, Munekazu Nakamura, Osamu Togari, Noriyuki Yoneda +1 more | 1990-03-20 |