Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6185803 | Fuzzed fabric liner for a disk cartridge | Yiping Ma, Ronald F. Hales, Wayne Miller | 2001-02-13 |
| 6148495 | Method for producing a fuzzed fabric liner for a disk cartridge | Yiping Ma, Ronald F. Hales, Wayne Miller | 2000-11-21 |
| 5677818 | Disk Cartridge with fuzzed liner | Yiping Ma, Mark S. Thayne, Ronald F. Hales | 1997-10-14 |
| 5237477 | Head wiper for Bernoulli disk drive | James Wold | 1993-08-17 |