Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8151121 | Secure data storage | Ian E. Harvey, David Lee, Greg S. Lewis, Steven Russel Spielman, Christopher C. Tan +1 more | 2012-04-03 |
| 7149178 | Method and format for reading and writing in a multilevel optical data systems | Gregory Stephen Lewis, David Lee, Yi Ling, Stephen Pope, Steven Russel Spielman +1 more | 2006-12-12 |
| 7136333 | Method and apparatus for reading and writing a multilevel signal from an optical disc oscillators | John Fan, David Lee, Yi Ling, Yung-Cheng Lo, Steven E. McLaughlin +6 more | 2006-11-14 |
| 6775218 | High density data write strategy | Michael P. O'Neill, David Warland, Kunjithapatham Balasubramanian, Matthew C. Bashaw, Timothy Learmonth +4 more | 2004-08-10 |
| 6771570 | Method and format for reading and writing in a multilevel optical data system | Gregory Stephen Lewis, David Lee, Yi Ling, Stephen Pope, Steven Russel Spielman +1 more | 2004-08-03 |
| 6657933 | Method and apparatus for reading and writing a multilevel signal from an optical disc | John Fan, David Lee, Yi Ling, Yung-Cheng Lo, Steven W. McLaughlin +6 more | 2003-12-02 |
| 6381724 | Method and apparatus for modulation encoding data for storage on a multi-level optical recording medium | Lloyd R. Welch, Steve McLaughlin | 2002-04-30 |
| 6275458 | Method and apparatus for reading and writing a multi-level signal from an optical disc | David Lee, Richard L. Martin, Steven Russel Spielman | 2001-08-14 |
| 6148428 | Method and apparatus for modulation encoding data for storage on a multi-level optical recording medium | Lloyd R. Welch, Steve McLaughlin | 2000-11-14 |
| 5854779 | Optical disc reader for reading multiple levels of pits on an optical disc | Bruce V. Johnson, Gregory A. McDermott, Michael P. O'Neill, Cezary Pietrzyk, Steven Russel Spielman | 1998-12-29 |
| 5818806 | Method and apparatus for providing equalization for the reading of marks on optical data storage media | Steven Russel Spielman | 1998-10-06 |