Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887179 | Substrate for rigid disk storage media and method and apparatus for making the same | — | 1989-12-12 |
| 4870524 | Substrate for rigid disk storage media | — | 1989-09-26 |
| 4829799 | Method of manufacturing substrate for memory disk | Atsushi Yamazaki, Chris Krishnan | 1989-05-16 |
| 4825680 | Method of manufacturing metal substrates for disk for memory storage media | Atsushi Yamazaki | 1989-05-02 |
| 4823578 | Method of manufacturing substrate for memory disk | Atsushi Yamazaki, Chris Krishnan | 1989-04-25 |