Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6209507 | Valve mechanism for internal combustion engine | Noboru Sakamoto, Masahiro Muramatsu | 2001-04-03 |
| 5674099 | Outboard drive exhaust system | Masahiro Muramatsu, Norihito Mizusawa | 1997-10-07 |
| 5522354 | Valve mechanism for internal combustion engine | Noboru Sakamoto, Masahiro Muramatsu | 1996-06-04 |