Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841624 | Method of producing a thin film magnetic head | Eisei Togawa, Saburo Suzuki, Kenji Sugimoto | 1989-06-27 |
| 4824731 | Thin film magnetic head | Haruhiko Matsuyama, Fusaji Shoji, Kenji Sugimoto | 1989-04-25 |