Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7870911 | Pile driver | Nobuyuki Tomida | 2011-01-18 |
| 6193775 | Coated granular fertilizer | Toshio Fujita | 2001-02-27 |
| 5176734 | Granular fertilizer with a decomposable coating and process for producing the same | Toshio Fujita, Yoshisato Yamashita, Katsutoshi Yamahira | 1993-01-05 |
| 5147442 | Coated granular fertilizer | Nobumasa Kosuge, Toshio Fujita, Yoshisato Yamashita, Katsutoshi Yamahira, Sayoko Miyoshi | 1992-09-15 |
| 5009696 | Fertilizer with a degradative coating | Toshio Fujita, Yoshisato Yamashita, Katsutoshi Yamahira | 1991-04-23 |
| 4881963 | Granuler fertilizer with a degradative coating | Toshio Fujita, Yoshisato Yamashita, Katsutoshi Yamahira | 1989-11-21 |
| 4369055 | Coated granular fertilizer capable of controlling the effect of temperature upon dissolution-out rate | Toshio Fujita, Chigo Takahashi, Hirozo Shimizu, deceased | 1983-01-18 |