Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5176734 | Granular fertilizer with a decomposable coating and process for producing the same | Toshio Fujita, Yoshisato Yamashita, Shigemitsu Yoshida | 1993-01-05 |
| 5147442 | Coated granular fertilizer | Nobumasa Kosuge, Toshio Fujita, Yoshisato Yamashita, Shigemitsu Yoshida, Sayoko Miyoshi | 1992-09-15 |
| 5009696 | Fertilizer with a degradative coating | Toshio Fujita, Yoshisato Yamashita, Shigemitsu Yoshida | 1991-04-23 |
| 4881963 | Granuler fertilizer with a degradative coating | Toshio Fujita, Yoshisato Yamashita, Shigemitsu Yoshida | 1989-11-21 |