Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6952588 | Radio telephone system | — | 2005-10-04 |
| 6895250 | Method and relay station for callback communication | — | 2005-05-17 |
| 6630069 | Hollow fiber membrane module of immersing type | Daichi Sakashita, Shinsuke Shibuya | 2003-10-07 |
| 6117686 | Method for detecting harmful gases which is applicable to broad gas concentration range | Kazunari Tanaka, Yoshihiko Sadaoka | 2000-09-12 |
| 6096557 | Gas detection method and apparatus using gas reactive pigment | Kazunari Tanaka, Yoshihiko Sadaoka | 2000-08-01 |
| 5952237 | Method for detecting harmful gases which is applicable to broad gas concentration range | Kazunari Tanaka, Yoshihiko Sadaoka | 1999-09-14 |