Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811142 | Magnetic head for vertical magnetic recording and method of producing same | Tetsuya Iwata, Yasuo Tanaka, Toshiaki Hashidate | 1989-03-07 |
| 4807076 | Thin film magnetic head for use in vertical magnetic recording | Naohiro Ishibashi | 1989-02-21 |