Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4591441 | Method and apparatus for separating oil from water | — | 1986-05-27 |
| 4358380 | Method of reproducing water-soluble cutting agents | Masami Hasegawa, Takahisa Naitoh | 1982-11-09 |