Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8947802 | Methods and systems for magnetic media servo writing | Douglas W. Johnson, Roni J. Dornfeld | 2015-02-03 |
| 8867167 | Tapered pole heads for magnetic media | Douglas W. Johnson | 2014-10-21 |
| 8867157 | Perpendicular pole head for servo writing magnetic media | Douglas W. Johnson, Larold L. Olson, Yung Yip | 2014-10-21 |
| 8797681 | Servo write head having plural spaced front blocks coupled by magnetic posts to a back bar | — | 2014-08-05 |
| 8760802 | Systems and methods for processing magnetic media with first and second magnetic gaps adjacent opposite sides of the recording layer | Douglas W. Johnson | 2014-06-24 |
| 8643968 | Methods and systems for magnetic media servo writing | Douglas W. Johnson, Roni J. Dornfeld | 2014-02-04 |
| 8016194 | Mobile data storage device reader having both radiofrequency and barcode scanners | Curtis B. Hause, Sanjay Gupta, Jody L. Gregg | 2011-09-13 |
| 7199957 | Write head alignment for full amplitude time-based servo | Richard E. Jewett | 2007-04-03 |
| 7072133 | Servo mark verify head | Yung Yip | 2006-07-04 |
| 7068030 | Magnetic field strength detector | Michael B. Hintz, Richard E. Jewett, Steven Lindblom | 2006-06-27 |
| 6795267 | Guided servo writing for data storage media | Richard E. Jewett, Mark R. Drutowski | 2004-09-21 |
| 6614607 | Servo pattern recording method and system | Robert P. Groschen, Jr., Curtis B. Hause, Richard E. Jewett, Steven C. Weber | 2003-09-02 |
| 6040963 | Fringe field compensation system for multi-track servo recording head | — | 2000-03-21 |
| 5959812 | Fringe field compensation system for multi-track servo recording head | — | 1999-09-28 |
| 5124866 | Recording head core yoke with full length core support | — | 1992-06-23 |