Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5186816 | Method of producing high aromatic-content solvents | Fumio Maruyama, Shiro Aizawa | 1993-02-16 |
| 5045178 | Process for production of methylnaphthalenes | Fumio Maruyama, Shirou Aizawa | 1991-09-03 |