Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5076675 | Polarizing separating device and optical isolator employing the same | Satoshi Kusaka, Hideki Noda, Tatsuro Kunikane, Hironao Hakogi | 1991-12-31 |
| 5048912 | Optical fiber switching with spherical lens and method of making same | Tatsuro Kunikane, Hideki Isono, Michihiro Takamatsu | 1991-09-17 |
| 4824200 | Optical branching filter | Hideki Isono, Kazushi Asanuma, Takashi Yokota | 1989-04-25 |
| 4189206 | Optical switching device | Kazuo Yakuwa, Shinya Okuda, Keiji Tanaka, Takashi Ishikawa | 1980-02-19 |