Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836914 | Method for removing iron content in petroleum series mineral oil therefrom | Akira Inoue, Masaru Ushio, Yasuyuki Oishi, Hisao Sakoda | 1989-06-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836914 | Method for removing iron content in petroleum series mineral oil therefrom | Akira Inoue, Masaru Ushio, Yasuyuki Oishi, Hisao Sakoda | 1989-06-06 |