Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4209494 | Catalytic converter for purifying exhaust gases of internal combustion engines | Akio Kakinuma | 1980-06-24 |
| 4206178 | Apparatus for purifying exhaust gases of internal combustion engines | Akio Kakinuma | 1980-06-03 |
| 4206179 | Apparatus for purifying exhaust gases of internal combustion engines | Ojimamachi Kakinuma | 1980-06-03 |
| 4192846 | Exhaust gas purification system for internal combustion engines | Masakazu Tatejima | 1980-03-11 |