Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4501243 | Air-fuel ratio control apparatus | Yukihide Niimi, Masahiro Urushidani | 1985-02-26 |
| 4478191 | Air-fuel ratio control system for internal combustion engines | Yukihide Niimi, Masahiro Urushidani | 1984-10-23 |
| 4478192 | Air-fuel ratio control system for internal combustion engines | Yukihide Niimi, Masahiro Urushidani, Hidemi Ohnaka | 1984-10-23 |