Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6019829 | Carbon black aggregate | Yoshihiro Omae, Michihiro Ikeda, Tadashi Hashiguchi, Akiyoshi Ohnishi, Shuuhei Taohata | 2000-02-01 |
| 5891414 | Method for producing carbon black | Shininchi Kanamaru | 1999-04-06 |
| 4631180 | Process for producing carbon black | Hiromu Kobayashi, Yoshikazu Toyonaga, Hozo Yamazaki, Masanori Karatsu | 1986-12-23 |