Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4572141 | Method of controlling intake air quantity for internal combustion engines | Shumpei Hasegawa, Yoshibumi Mishima, Noriyuki Kishi | 1986-02-25 |
| 4526144 | Idling rpm feedback control method for internal combustion engines | Shumpei Hasegawa | 1985-07-02 |