Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8588451 | Electret condenser microphone | — | 2013-11-19 |
| 8119749 | Method of taking (meth)acrylic ester polymer out of liquid reaction mixture | Kenichi Hamada, Kazunori Watanabe, Masaji Kato, Jun Nagai, Tatsufumi Watanabe +2 more | 2012-02-21 |
| 6156869 | Method for producing polyamides | Kozo Tamura, Hideaki Oka, Kazunori Watanabe | 2000-12-05 |
| 5737283 | Reproducing method and apparatus using absolute time data | Itaru Sato, Shigeto Yanagi | 1998-04-07 |