Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864022 | 3-Condensed imidazolium-cephem compounds | Akio Miyake, Masahiko Fujino | 1989-09-05 |
| 4812279 | Process for preparation of cellulose ester films | Hiroaki Nakagawa, Noriake Ohishi | 1989-03-14 |