Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8953235 | Method for producing a security mark on an optical data carrier | Joachim Knittel | 2015-02-10 |
| 8599674 | Method for storing data on an optical recording medium | Holger Hofmann, Stephan Knappmann, Christof Ballweg, Christian Buchler | 2013-12-03 |
| 8228775 | Holographic recording medium having a track pitch smaller than a distance between adjacent holograms | Heiko Trautner, Dietmar Braeuer, Christof Ballweg | 2012-07-24 |
| 8213289 | Compatible optical recording medium | Joachim Knittel, Alan Bruce Hamersley | 2012-07-03 |
| 8203925 | Apparatus for recording angular multiplexed pits | Joachim Knittel, Stephan Knappmann | 2012-06-19 |
| 8184516 | Method for controlling the quality of storage media | Stefan Kimmelmann, Atols Kern, Xavier Lebegue, Emmanuel Daugeras | 2012-05-22 |
| 8077579 | Holographic recording medium and pickup for this medium | Heiko Trautner | 2011-12-13 |
| 7852714 | Compact pickup for micro optical drive | Joachim Knittel | 2010-12-14 |
| 7596070 | Device for reading and/or writing optical recording media | Sören Dambach | 2009-09-29 |
| 7541564 | Optical pickup | Joachim Knittel, Gael Pilard | 2009-06-02 |
| 7477590 | Optical recording medium having at least two recordable layers | Dietmar Uhde | 2009-01-13 |
| 7440152 | Holographic disk medium with servo marks | Joachim Knittel, Stephan Knappmann | 2008-10-21 |
| 7385905 | Apparatus for reading from and/or writing to optical recording media | Joachim Knittel | 2008-06-10 |
| 7158471 | Device and method for reading multilayer optical disk with compensation of shading effects | Holger Hofmann | 2007-01-02 |
| 7106687 | Optical recording medium having at least two recordable layers | Dietmar Uhde | 2006-09-12 |
| 7009165 | Optical detection device for detecting an intensity of a light beam and for detecting data transmitted by the light beam | Ingo Hehemann, Werner Brockherde, Armin Kemna, Holger Hofmann | 2006-03-07 |
| 6600704 | Apparatus for scanning optical recording media having different information carrier layers | Christoph Dietrich | 2003-07-29 |
| 6574183 | Device for reading from or writing to optical recording media | Lieu-Kim Dang, Christoph Dietrich, Heinz-Jorg Schroeder | 2003-06-03 |
| 6430141 | Device for reading from or writing to optical recording media | Lieu-Kim Dang, Christoph Dietrich, Heinz-Jorg Schroeder | 2002-08-06 |
| 6304542 | Compact dual wavelength optical pickup head | Lieu-Kim Dang, Christoph Dietrich, Heinz-Joerg Schroeder | 2001-10-16 |
| 6215738 | Device for reading from or writing to optical recording media | Dietmar Uhde | 2001-04-10 |
| 5923626 | Recording or playback devices for optical information carriers having a different track width | — | 1999-07-13 |
| 5905708 | Focusing two polarized beams onto different information carrier layers of a single optical disc | — | 1999-05-18 |
| 5841745 | Method and apparatus for eliminating disturbances encountered during scanning of an information carrier | Hans-Robert Kuhn | 1998-11-24 |
| 4909267 | Cooling pipe for bar | Franz Tamm, Arnold Joachim, Hartmut Blank, Bernhard Horicke, Joachim Schulz | 1990-03-20 |