Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8448657 | Passive-cycle skipping valve | Randal E. Zugnoni | 2013-05-28 |
| 6145849 | Disk processing chuck | Peter S. Bae, Stanley M. Smith, Kang Jia, Warren C. Schroeder, Ronald Allen | 2000-11-14 |
| 5657617 | Shipping cassette lid and unlid automation | Ronald Allen, Michael Myslovaty | 1997-08-19 |