Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D345156 | Video tape recorder | Atsushi Ishibashi, Makoto Fukatsu, Tadashi Sube, Hideo Sasajima | 1994-03-15 |
| D336638 | Portable computer | Shinji Shibuya, Shunji Fujimori, Michiaki Kotsuka, Kazuyuki Fukushima | 1993-06-22 |
| D317302 | Portable computer | Shinji Shibuya, Yoshihiro Kawakatsu, Michiaki Kotsuka, Masaaki Eishima | 1991-06-04 |
| D310524 | Telephone station set | Toshiyuki Utsuki, Yoshihiro Kwakatsu, Yasunari Iehara | 1990-09-11 |