Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8023790 | Optical waveguide film with mark for positioning and method for producing the same | Keishi Shimizu, Masahiro Igusa, Akira Fujii, Kazutoshi Yatsuda, Shigemi Ohtsu | 2011-09-20 |
| 7933182 | Optical information recording and reproducing apparatus that sets a movable range of an objective lens based on the type of recording medium | — | 2011-04-26 |
| 7925130 | Optical waveguide, optical module, method of producing optical module, and method of producing optical waveguide | Akira Fujii, Keishi Shimizu, Shigemi Ohtsu, Kazutoshi Yatsuda, Masahiro Igusa | 2011-04-12 |
| 7865256 | Audio playback apparatus | — | 2011-01-04 |