Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9034935 | Urethane foam molded product and method for producing the same | Koji Tomiyama, Naoki Katayama, Yasuo Suzuki, Shinji Yoshida | 2015-05-19 |
| 4236051 | Electret microphone | Sadayoshi Nakagawa, Mitsuharu Shinohara | 1980-11-25 |