Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5231555 | Magnetic head comprising a laminated magnetic layer structure between non magnetic rock salt structure oxide substrates | Eiji Itoh, Ryuichi Nagase, Kazuhiro Saito, Hiroshi Hosaka | 1993-07-27 |
| 5089196 | Non-magnetic substrate of magnetic head, magnetic head and method for producing substrate | Eiji Itoh, Ryuichi Nagase, Kazuhiro Saito, Hiroshi Hosaka | 1992-02-18 |
| 5026614 | Magnetic recording medium with a zinc cobalt oxide non-magnetic substrate containing nickel or manganese | Eiji Itoh, Ryuichi Nagase, Kazuhiro Saito, Hiroshi Hosaka | 1991-06-25 |