Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5280631 | Polarization diversity system suitable for radio communication in indoor space | Kazuo Nakahi, Hiroshi Umeyama, Shigemi Sakurai | 1994-01-18 |
| 4924237 | Antenna and its electronic circuit combination | Kazuhiro Honda, Kouji Yamashita, Masanori Kawai, Kazuo Nakahi | 1990-05-08 |