Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675317 | Residual pressure sensor and residual pressure sensor monitoring apparatus | Masato Ichikawa, Koichi Futsuhara | 1997-10-07 |
| 5668706 | Load driving circuit | Koichi Futsuhara | 1997-09-16 |
| 5666081 | On-delay circuit | Koichi Futsuhara | 1997-09-09 |
| 5638043 | Warning apparatus | Koichi Futsuhara | 1997-06-10 |
| 5619110 | Safety ensuring apparatus | Noboru Sugimoto, Masatoshi Suzuki, Koichi Futsuhara, Ritsuo Mihira | 1997-04-08 |