Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6504940 | Connecting device for connecting a sound producing device to an electronic equipment | Shunichi Watanabe, Atsushi Kuwabara, Yoshizumi Ohta | 2003-01-07 |
| 5476629 | Method for manufacturing IC card substrate | Isao Yabe, Kazuo Sato | 1995-12-19 |
| 4771020 | Optical glass | Nobuhiro Nozawa | 1988-09-13 |