Issued Patents All Time
Showing 25 most recent of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7595950 | Robust data storage techniques for two-sided data storage tape | Larold L. Olson, Brian D. Findlay, C. Thomas Jennings, Douglas W. Johnson, Denis J. Langlois | 2009-09-29 |
| 7495859 | Interleaved servo pattern | Mark P. Weber, Richard E. Jewett, Douglas W. Johnson, Alan R. Olson | 2009-02-24 |
| 7342748 | System with matrix array of write heads and matrix array of magnetoresistive (MR) read heads | Yung Yip, James S. Anderson, Douglas W. Johnson, Denis J. Langlois | 2008-03-11 |
| 7204446 | Data storage tape guiding systems using tapered guides | Douglas W. Johnson, James S. Anderson, Robert W. Tapani | 2007-04-17 |
| 7173794 | Accessing both sides of data storage tape | Douglas W. Johnson, Robert W. Tapani | 2007-02-06 |
| 7142381 | Servo writing devices for creating servo patterns with inherent track ID | Yung Yip | 2006-11-28 |
| 7095583 | Dual mode servo pattern | Douglas W. Johnson, Denis J. Langlois, Yung Yip | 2006-08-22 |
| 7079343 | Time-based sectored servo data format | Douglas W. Johnson, Durkee B. Richards | 2006-07-18 |
| 7046466 | Dual density recording for direction-dependent linear media | Tim T. Ngo, Takanori Sato | 2006-05-16 |
| 7038871 | Multi-band servo patterns with inherent track ID | Yung Yip | 2006-05-02 |
| 7038872 | Servo patterns with inherent track ID | Yung Yip | 2006-05-02 |
| 7035040 | Sequenced time-based servo techniques | Alan R. Olson | 2006-04-25 |
| 7031097 | Systems and methods for using noise measurement tracks with servopositioning signals | Douglas W. Johnson, Yung Yip | 2006-04-18 |
| 6999269 | Two-sided data storage tape with servo information on both sides of the tape | Douglas W. Johnson, Yung Yip | 2006-02-14 |
| 6999258 | Time-based servopositioning systems | Yung Yip | 2006-02-14 |
| 6970312 | Full amplitude time-based servopositioning signals | Yung Yip | 2005-11-29 |
| 6952317 | Amplitude-based servo patterns for magnetic media | Yung Yip | 2005-10-04 |
| 6914756 | Bidirectional read-while-write data recording system | Tim T. Ngo, Yung Yip | 2005-07-05 |
| 6873487 | Hybrid servopositioning systems | — | 2005-03-29 |
| 6842305 | Time-based servo for magnetic storage media | Michael J. Kelly, Douglas W. Johnson | 2005-01-11 |
| 6781778 | Time-based sectored servo data format | Douglas W. Johnson, Durkee B. Richards | 2004-08-24 |
| 6754022 | High-speed current driver | — | 2004-06-22 |
| 6735039 | Linear positioning encoding in amplitude-based servopositioning systems | — | 2004-05-11 |
| 6542321 | Bidirectional read-while-write data recording system | Tim T. Ngo, Yung Yip | 2003-04-01 |
| 6542325 | Time-based servo for magnetic storage media | Michael J. Kelly, Douglas W. Johnson | 2003-04-01 |