Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6340226 | Spectacles accommodating interchangeable/replaceable lens | Toshihisa Akaba, Kazumichi Kurihara, Yasushi Sakai, Hakaru Fujita, Isao Iizuka +1 more | 2002-01-22 |
| 5381261 | Optical isolator | Shigeru Hirai, Yasuji Hattori, Masayuki Nishimura, Masayuki Shigematsu, Minoru Watanabe +1 more | 1995-01-10 |