Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7114947 | Optical disk mold tooling for reduced edge wedge | Douglas R. Plourde, Dean E. Sitz, Donald J. Kerfeld, John R. Johnson | 2006-10-03 |
| 7034971 | Fabrication of sandwiched construction media | Jathan D. Edwards, Frank E. Aspen, Ramon F. Hegel | 2006-04-25 |
| 6961950 | Variable thickness stamper for creation of flat molded substrates | Donald J. Kerfeld, Douglas J. Chaput, Jathan D. Edwards | 2005-11-01 |
| 6850345 | Sandwich holographic disk construction with thin molded substrates | Jathan D. Edwards, Frank E. Aspen, Ramon F. Hegel | 2005-02-01 |
| 6752611 | Optical disk mold tooling for reduced edge wedge | Douglas R. Plourde, Dean E. Sitz, Donald J. Kerfeld, John R. Johnson | 2004-06-22 |
| 6678238 | Mold for manufacturing double-sided disk shaped articles for storing data | Douglas R. Plourde, Dean E. Sitz, Jeffrey M. Novotny | 2004-01-13 |
| 6638692 | Replicated regions on optical disks | Anthony O. Banal, Ted L. Bahns, Kristi L. Chavez, Donald J. Kerfeld | 2003-10-28 |
| 6611365 | Thermoplastic substrates for holographic data storage media | Jathan D. Edwards, Frank E. Aspen, Ramon F. Hegel | 2003-08-26 |
| 6382955 | Disc molding apparatus for hubless optical disc having low radial runout | — | 2002-05-07 |
| 6238763 | Rewritable optical data storage disk having enhanced flatness | — | 2001-05-29 |
| 6180201 | Rewritable optical data storage disk having enhanced flatness | — | 2001-01-30 |
| 6154441 | Method for centering a hub in an optical disc, and an optical storage system using such disc | Brian Bonn | 2000-11-28 |
| 6147962 | Data storage cartridge having a restraining mechanism | Thiruppathy Srinivasan, Douglas R. Plourde, Brian Bonn | 2000-11-14 |
| 6002663 | Hubless optical disc having low radial runout and method of manufacture | — | 1999-12-14 |
| 5972461 | Rewritable optical data storage disk having enhanced flatness | — | 1999-10-26 |