Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861929 | Process for producing halogenated benzene derivative using zeolite catalyst | Kazuhiko Sekizawa, Toshio Hironaka, Yukihiro Tsutsumi | 1989-08-29 |
| 4849560 | Process for preparation of halogenated benzene derivatives | Kazuhiko Sekizawa, Toshio Hironaka, Yukihiro Tsutsumi | 1989-07-18 |