Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4345944 | Cement additive | Yoshiteru Kazama, Akitoshi Tsuji, Yukio Tanino | 1982-08-24 |
| 4275012 | Process for continuous refining of oils and fats | Yoshiharu Kawahara | 1981-06-23 |