Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6547712 | Method for solidifying and sealing in a toxic substance with sulfur | Takuya Yamato, Chujiro Nishida, Katsuyoshi Toyofuku, Toshiyuki Kokubu | 2003-04-15 |
| 6083431 | Method for solidifying and sealing in a toxic substance with sulfur | Takuya Yamato, Chujiro Nishida, Katsuyoshi Toyofuku, Toshiyuki Kokubu | 2000-07-04 |
| 5935618 | Apparatus for manufacturing molded materials solidified by sulfur | Chujiro Nishida, Katsuyoshi Toyofuku, Toshiyuki Kokubu | 1999-08-10 |
| 5618526 | Composition containing divalent manganese ion | — | 1997-04-08 |
| 5368851 | Composition containing divalent manganese ion and method for preparing the same | — | 1994-11-29 |
| 5171726 | Composition for gas purification and method of preparing same | Yozo Takemura, Tamio Noda, Masaru Meguro, Norio Mikami | 1992-12-15 |
| 4745129 | Chemically-active aqueous solution and solid substance containing divalent iron ions | Shoichiro Yokoyama, Chiaki Ohama, Ryosuke Fukui | 1988-05-17 |
| 4670288 | Chemically-active composition containing divalent iron ions | Shoichiro Yokoyama, Chiaki Ohama, Ryosuke Fukui | 1987-06-02 |
| 4362571 | Method for refining sugar solutions | Shiyoichiro Yokoyama, Keisuke Katoh, Ryutaro Itaya, Toshio Kaga | 1982-12-07 |
| 4216084 | Method for treating waste water containing organic contaminants utilizing a magnesia adsorbent | Shoichiro Yokoyama, Ryutaro Itaya, Tsuneo Ohkuma | 1980-08-05 |