Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6977052 | Check disk for optical data storage disk manufacturing | Barry Brovold, Donald J. Kerfeld | 2005-12-20 | $7,932,000 |
| 6638692 | Replicated regions on optical disks | Anthony O. Banal, Kristi L. Chavez, Donald J. Kerfeld, Chad R. Sandstrom | 2003-10-28 | $6,782,000 |
| 5946286 | Customized graphics for dual layer optical discs | — | 1999-08-31 | $2,937,000 |
| 5607188 | Marking of optical disc for customized identification | Bruce T. Peacock | 1997-03-04 | $5,805,000 |