Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6441968 | Zoom lens and video camera and electronic still camera using this | Hiroaki Okayama, Shusuke Ono | 2002-08-27 |
| 6197251 | Porous metal material, and method for manufacturing same | Akira Hashimoto, Junjirou Awano, Katsuhiro Okamoto, Tsumoru Ohata, Yoriko Takai | 2001-03-06 |
| 5229173 | Method of producing a magnetic recording media | Hiroshi Suzuki, Tousaku Nishiyama, Tsumoru Ohata | 1993-07-20 |