Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6990682 | Two-way CATV system | Hiroaki Sato | 2006-01-24 |
| 5138651 | Cordless loud speaking telephone | — | 1992-08-11 |
| D326657 | Telephone | Hideo Fukasawa, Yoshio Sano, Nobuo Uchiyama, Hiroshi Taniguchi | 1992-06-02 |
| 4605823 | Phone conference system | Hiroyuki Mori, Atsuya Murai | 1986-08-12 |