Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5824829 | Hydrocarbon viscosity inhibitor and inhibiting method | Noriaki Maeda, Seiji Tanizaki, Nobumitsu Kumazawa, Yutaka Takeuchi | 1998-10-20 |
| 4996372 | Process for oxidizing 2,6-diisopropylnaphthalene | Kenji Saeki, Hiroshi Fukuhara, Tokinori Agoo, Hisaya Miki, Yutaka Haneda +1 more | 1991-02-26 |
| 4273623 | Process for recovery of resorcin | Isao Hashimoto, Hirohiko Nambu | 1981-06-16 |
| 4239921 | Process for purification of crude resorcinol | Isao Hashimoto, Hiroaki Nakagawa, Hirohiko Nambu | 1980-12-16 |