Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689804 | Medium-frequency radio transmission system | Tadao Sugita, Tatehiko Toyosawa, Kazumi Shoji, Shinichi Watanabe, Masaaki Kitanda | 1997-11-18 |
| 5537637 | Medium-frequency radio broadcasting retransmission system for confined and electromagnetically shielded areas | Tadao Sugita, Tatehiko Toyosawa, Kazumi Shoji, Shinichi Watanabe, Masaaki Kitanda | 1996-07-16 |
| 4945317 | Matching circuit | Tutomu Sato, Haruhiko Yura, Yoshihiko Nasu, Shigeo Mori | 1990-07-31 |