Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850195 | Fuel spray combustion device | Yoichiro Ohkubo, Yasusi Tanasawa | 1989-07-25 |
| 4693215 | Inlet port for internal combustion engine | Katsuhiko Sugiyama, Hiromitsu Kawazoe | 1987-09-15 |
| 4574751 | Inlet port for internal combustion engine | Katsuhiko Sugiyama, Hiromitsu Kawazoe | 1986-03-11 |
| 4422423 | Jet control type carburetor | Katsuhiko Sugiyama, Katsuyuki Ohsawa, Kenji Fujikake | 1983-12-27 |
| 4404859 | Flowmeter | Katsuyuki Ohsawa, Katsuhiko Sugiyama | 1983-09-20 |
| 4336780 | Jet control carburetor | Katsuhiko Sugiyama, Katsuyuki Ohsawa, Kenji Fujikake | 1982-06-29 |