Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9858599 | Communication system | — | 2018-01-02 |
| 6928152 | Call reception infeasibleness informing system and method | Hisae Takeda, Yoshiko Takeda, Noriko Takeda, Hiroko Takeda | 2005-08-09 |
| 4992252 | Method for production of hydroxylammonium salt | Hiroshi Ichihashi, Hiroshi Yoshioka | 1991-02-12 |