Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669964 | Fluoralkycarboxylic acid and derivative thereof | — | 1997-09-23 |
| 5604032 | Fluorine-containing carboxylic acid amine salt and a magnetic recording medium with the same thereon | Yukikazu Ohchi | 1997-02-18 |