Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7333704 | Multichannel optical path changing device and its production method | Toru Tanaka, Hidehisa Nanai, Yuji Yamamoto, Shigeki Sakaguchi | 2008-02-19 |
| 4565579 | Nonexplosive chemical composition for gently breaking rock or concrete mass | Isami Fujioka, Kazutoshi Imada, Takayuki Ishibashi | 1986-01-21 |