Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6928152 | Call reception infeasibleness informing system and method | Kikuo Takeda, Hisae Takeda, Yoshiko Takeda, Hiroko Takeda | 2005-08-09 |
| 6477189 | Laser oscillation frequency stabilizer | Hiroyuki Kawashima, Susumu Saito | 2002-11-05 |
| 6178244 | Cryptosystem | Seiichi Shinoda, Toshio Haseyama | 2001-01-23 |
| 4739345 | Optical recording disk | Kenryo Namba, Shigeru Asami, Toshiki Aoi, Kazuo Takahashi, Mamoru Usami +1 more | 1988-04-19 |