Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7435405 | Anti-oxidation method for sulfide minerals in sulfide ore | Yoshiyuki Tanaka, Hideyuki Okamoto, Masaki Imamura | 2008-10-14 |
| 6386927 | Screw fastening structure and nut member | Shinji Nakano | 2002-05-14 |
| 6264847 | Method of processing cyanide ions by ozone | Ryozo Ushio, Naoko Kikuta, Koji Sasaki, Yuji Imaizumi, Iichi Nakamura +2 more | 2001-07-24 |
| 5842923 | Screw and method for its production | Masaharu Umemura, Takashi Yamamoto | 1998-12-01 |
| 5702591 | Flotation method for non-ferrous metal variable ores | Hideyuki Okamoto, Hiroichi Miyashita | 1997-12-30 |
| 4637494 | Apparatus for moving carriages along ladders | Hitoshi Iida | 1987-01-20 |
| D275205 | Binocular instrument | — | 1984-08-21 |