Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4533434 | Process for sizing paper and process for making plasterboard base paper sized thereby | Shigehiko Yoshioka, Hideto Yamada, Yoshio Adachi, Kazuo Miyahana | 1985-08-06 |