Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6194045 | Rigid disc substrate comprising a central hard core substrate with a hard, thermally and mechanically matched overlying smoothing layer and method for making the same | William Annacone, Kenneth P. Felis | 2001-02-27 |
| 5487931 | Rigid disc substrate comprising a central hard core substrate with a hard, thermally and mechanically matched overlying smoothing layer and method for making the same | William Annacone, Kenneth P. Felis | 1996-01-30 |
| 5466524 | Barium hexaferrite-silicon nitride-carbon magnetic recording medium | Youichi Hoshi, Jack H. Judy | 1995-11-14 |