Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5176734 | Granular fertilizer with a decomposable coating and process for producing the same | Toshio Fujita, Shigemitsu Yoshida, Katsutoshi Yamahira | 1993-01-05 |
| 5147442 | Coated granular fertilizer | Nobumasa Kosuge, Toshio Fujita, Shigemitsu Yoshida, Katsutoshi Yamahira, Sayoko Miyoshi | 1992-09-15 |
| 5009696 | Fertilizer with a degradative coating | Toshio Fujita, Shigemitsu Yoshida, Katsutoshi Yamahira | 1991-04-23 |
| 4881963 | Granuler fertilizer with a degradative coating | Toshio Fujita, Shigemitsu Yoshida, Katsutoshi Yamahira | 1989-11-21 |
| 4420468 | Method of treating converted potassium sulfate for reducing a small amount of chlorine contained therein | Masanobu Inoue, Kohichi Fukatsu | 1983-12-13 |
| 4349524 | Process for producing purified hydrochloric acid | Yutaka Matsuo | 1982-09-14 |
| 4349525 | Process for purifying hydrochloric acid produced from alkali chloride and sulfuric acid | Yutaka Matsuo | 1982-09-14 |