Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9803581 | Exhaust gas purifying apparatus | Hironori Yamane, Hiroshi Sueto | 2017-10-31 |
| 5539819 | Credit card which generates a DTMF tone | Yukio Sonoyama | 1996-07-23 |
| 5369700 | Multi-function telephone apparatus and control method | Ryuichi ISHIHARA, Yoshimoto Chikatsu, Yukihiko Nagata, Eihachiro Ohmori | 1994-11-29 |