Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8571037 | Optical digital transmission system | Shigeki Aisawa, Masahito Tomizawa, Yutaka Miyamoto, Yoshiaki Kisaka, Yasuyuki Endo +1 more | 2013-10-29 |
| 8514881 | Digital transmission system and digital transmission method | Yoshiaki Kisaka, Takuya Ohara, Shigeki Aisawa, Yutaka Miyamoto, Kazuhito Takei +3 more | 2013-08-20 |
| 4929891 | Exciting unit for internal magnet type meters | Akira Yoneda | 1990-05-29 |