Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5376257 | Process for feed oil refining for production of lubricating oil | Noboru Shimizu, Norihiko Ageishi | 1994-12-27 |
| 4559007 | Fuel burning method in heating furnace | Mitsuo Hashimoto, Yasuo Watanabe, Fumio Mama | 1985-12-17 |