Issued Patents 2002
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493307 | OPTICAL HEAD HAVING TWO SEMICONDUCTOR LASERS OF DIFFERENT WAVELENGTH, AN OBJECTIVE LENS FOCUSING LASER BEAMS ON DIFFERENT THICKNESS SUBSTRATES, AND AN ANNULAR PHASE SHIFTER DECREASING FOCUSED LASER BEAM SPOT ABERRATION | Takeshi Shimano | 2002-12-10 |
| 6477129 | Optical disc drive | Koichi Maruyama, Takeshi Shimano, Shigeru Nakamura, Kazuo Shigematsu | 2002-11-05 |
| 6437842 | LCD and projection type display using three metalization layers and black layer | Hideo Sato, Minoru Hoshino, Yuji Mori, Shinichi Komura, Yoshiharu Nagae +3 more | 2002-08-20 |
| 6437917 | Directional reflection screen and display system using the same | Tetsuya Ooshima, Yoshiyuki Kaneko | 2002-08-20 |
| 6430140 | OPTICAL HEAD HAVING TWO SEMICONDUCTOR LASERS OF DIFFERENT WAVELENGTH, AN OBJECTIVE LENS FOCUSING LASER BEAMS ON DIFFERENT THICKNESS SUBSTRATES, AND AN ANNULAR PHASE SHIFTER DECREASING FOCUSED LASER BEAM SPOT ABERRATION | Takeshi Shimano | 2002-08-06 |
| 6421174 | Directional reflection screen and display system using the same | Tetsuya Ooshima, Yoshiyuki Kaneko | 2002-07-16 |
| 6344926 | Method of reproducing three-dimensional images and three-dimensional image-reproducing device | Tetsuya Ooshima, Yoshiyuki Kaneko | 2002-02-05 |