Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820550 | Process for producing a sheet of color-developer for pressure-sensitive recording paper | Shouzou Aoyagi | 1989-04-11 |
| 4438021 | Catalyst for dehydrocoupling of toluene or xylene | Yoshio Okada, Takashi Terauchi, Masatoshi Hino | 1984-03-20 |