Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702821 | Magnetic recording medium comprising ferromagnetic powder and a specified polyurethane resin | Yuichiro Murayama, Hiroshi Hashimoto, Tsutomu Okita | 1997-12-30 |
| 5612134 | Magnetic recording medium having a carbon protective layer and a fluoro-lubricant supplied from a backcoat layer | Tsutomu Okita, Hideomi Watanabe, Toshio Ishida, Hiroshi Hashimoto | 1997-03-18 |
| 5607782 | Magnetic recording medium | Toshio Ishida, Tsutomu Okita | 1997-03-04 |