Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6418097 | Analog to digital converter assembly for normalizing servo error signals and multiplexing reference voltage inputs and digital outputs and improved optical drive system including same | David L. Schell, Randolph Scott Crupper, Kurt W. Getreuer, Leonardus I. Grassens, David E. Lewis | 2002-07-09 |
| 6411584 | Cartridge loading apparatus and methods of manufacturing and operating same | Kent Murphy | 2002-06-25 |
| 6266306 | Analog to digital converter and assembly for use in optical drive system to normalize servo error signals and multiplex reference voltage inputs and digital outputs | David L. Schell, Randolph Scott Crupper, Kurt W. Getreuer, Leonardus J. Grassens, David E. Lewis | 2001-07-24 |
| 6243336 | Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal and focus capture method for use in same | David L. Schell, Randolph Scott Crupper, Kurt W. Getreuer, Leonardus J. Grassens, David E. Lewis | 2001-06-05 |
| 6201659 | Cartridge-loading apparatus with tilting bias coil assembly | Kent Murphy | 2001-03-13 |
| 6167023 | Releasable disc adaptor for conforming central hub of information storage disc to standardized disc drive spindle | Clay Gaetje | 2000-12-26 |
| 6122232 | Isolation apparatus for use in disc drive system to mitigate effects of undesired mechanical forces and disc drive system including same | David L. Schell, Randolph Scott Crupper, Kurt W. Getreuer, Leonardus J. Grassens, David E. Lewis | 2000-09-19 |
| 6058081 | Optical drive system having servomotor operated relative to maximum quad sum signal | David L. Schell, Randolph Scott Crupper, Kurt W. Getreuer, Leonardus J. Grassens, David E. Lewis | 2000-05-02 |
| 6009061 | Cartridge-loading apparatus with improved base plate and cartridge receiver latch | Kent Murphy | 1999-12-28 |
| 5920539 | Apparatus and method for suppression of electromagnetic emissions having a groove on an external surface for passing an electrical conductor | David L. Schell | 1999-07-06 |
| 5729511 | Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal | David L. Schell, Randolph Scott Crupper, Kurt W. Getreuer, Leonardus J. Grassens, David E. Lewis | 1998-03-17 |
| 5724331 | Disk drive system having improved cartridge-loading apparatus including direct drive gear train and methods for making and operating same | Kent Murphy | 1998-03-03 |
| 5703857 | Cartridge-loading apparatus with improved cartridge receiver | Kent Murphy | 1997-12-30 |
| 5684776 | Cartridge-loading apparatus with improved parking arm | Kent Murphy | 1997-11-04 |
| 5060106 | Disk cartridge including door opening mechanism and improved hub assembly | Hendrikus W. C. M. Peeters, Wilhelm Taylor | 1991-10-22 |
| 4823214 | Disk drive for cartridge disks | — | 1989-04-18 |
| 4791511 | Disk cartridge with slide door engageable in either of two orientations | — | 1988-12-13 |
| 4745500 | Disk drive for cartridge disks | — | 1988-05-17 |
| 4740949 | Laser access apparatus for optical disk drive | — | 1988-04-26 |
| 4644521 | Optical memory cartridge and drive apparatus | Michael V. Konshak, Christopher Pollard | 1987-02-17 |