Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7778243 | Method for DTMF transfer by RTP | Yoshie Yamaguchi, Masahito Hirokawa, Yusuke Sato, Masayuki Ono | 2010-08-17 |
| 4544729 | Photo and radiation-sensitive organopolymeric material | Kazuo Nate, Takashi Inoue, Hitoshi Yokono, Mitsuo Ishikawa | 1985-10-01 |