Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7123569 | Optical data storage medium | — | 2006-10-17 |
| 7088481 | Holographic recording techniques using reference zone of spatial light modulator | — | 2006-08-08 |
| 7088482 | Holographic recording techniques using first and second portions of a spatial light modulator | — | 2006-08-08 |
| 7088488 | Spatial light modulator device with diffusive element | — | 2006-08-08 |
| 7034971 | Fabrication of sandwiched construction media | Frank E. Aspen, Ramon F. Hegel, Chad R. Sandstrom | 2006-04-25 |
| 6961950 | Variable thickness stamper for creation of flat molded substrates | Donald J. Kerfeld, Douglas J. Chaput, Chad R. Sandstrom | 2005-11-01 |
| 6922385 | Tracking techniques for holographic data storage media | — | 2005-07-26 |
| 6890704 | Reverse optical mastering for data storage disks | — | 2005-05-10 |
| 6850345 | Sandwich holographic disk construction with thin molded substrates | Frank E. Aspen, Ramon F. Hegel, Chad R. Sandstrom | 2005-02-01 |
| 6804034 | Fluid containment substrates for holographic media | — | 2004-10-12 |
| 6791784 | Diffraction-based monitoring of a patterned magnetic recording medium | — | 2004-09-14 |
| 6762865 | Self-referenced holography using diffusive element | — | 2004-07-13 |
| 6728196 | Reverse optical mastering for data storage disks | — | 2004-04-27 |
| 6678237 | Dual layer optical storage medium having partially reflecting layer comprising amorphous selenium | William C. Mitchell, Mark A. Arps | 2004-01-13 |
| 6628598 | Patterned media system | Garry Lundstrom, Paul R. Iverson, Joseph H. Sexton | 2003-09-30 |
| 6625100 | Tracking techniques for holographic data storage media | — | 2003-09-23 |
| 6611365 | Thermoplastic substrates for holographic data storage media | Frank E. Aspen, Ramon F. Hegel, Chad R. Sandstrom | 2003-08-26 |
| 6538776 | Self-referenced holographic storage | — | 2003-03-25 |
| 6414296 | Multiple pixel reading of holographic data including a position error calculation | — | 2002-07-02 |
| 5510626 | System and method for conditioning a radiation detector | Owen L. Nelson, Earl L. Cook, Padmanabham A. Arimilli | 1996-04-23 |
| 5440146 | Radiographic image reader | James E. Steffen, Jay A. Esch, Robert J. Mattila, Eric Julius Donaldson, Timothy S. Vraa +4 more | 1995-08-08 |
| 5398226 | Image tracking of optical media using two wavelength optical head | — | 1995-03-14 |
| 4812633 | Optical data card | Peter J. Vogelgesang, John W. Ulseth, Norman L. Giorgini | 1989-03-14 |