Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5146044 | Wireless detonator | Kenji Hashimoto | 1992-09-08 |
| 4908079 | Water in oil type emulsion explosive | Yoji Tasaki, Akihiro Tanaka, Katsuhide Hattori, Motoyuki Amano | 1990-03-13 |
| 4908080 | Water-in-oil type emulsion explosive with chelating agent | Tomoyuki Amano, Koji Edamura | 1990-03-13 |
| 4898095 | Laser beam-detonatable blasting cap | Yoji Tasaki, Katsuhide Hattori, Mikio Takano, Toshikazu Miyajima, Toshifumi Sato +1 more | 1990-02-06 |
| 4848232 | Method of electrically blasting a plurality of detonators and electric blasting apparatus for use in said method | Takeo Ueda, Yoshiro Osumi | 1989-07-18 |
| 4754703 | Method of electrically blasting detonator and cordless detonator for use in said method | Takeo Ueda | 1988-07-05 |