Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11037415 | Tactile presentation device | Yuji YONEHARA, Takeshi Fujiwara | 2021-06-15 |
| 4882746 | Cordless telephone system | — | 1989-11-21 |
| 4400782 | Corrosion monitoring system using a metal pipe for transmission of monitoring signals | Masashi Ishikawa, Katsutomo Okamoto, Shigeyoshi Sugita, Masayuki Goto, Yukuo Koizumi +1 more | 1983-08-23 |