Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6304312 | Optical head, method of manufacturing the same, and diffraction element suitable therefor | Yuzuru Tanabe, Tomoki Gunjima, Hiromasa Sato | 2001-10-16 |
| 6271966 | Optical head device including an optically anisotropic diffraction grating and process for its production | Yuzuru Tanabe, Tomoki Gunjima, Hiromasa Sato | 2001-08-07 |
| 6180028 | Liquid-crystal composition and polymeric liquid crystal obtained by polymerizing the same | Tomoki Gunjima, Mitsuru Kurosawa, Hiromasa Sato, Yuzuru Tanabe | 2001-01-30 |
| 6118586 | Optical head device including an optically anisotropic diffraction grating and production method thereof | Yuzuru Tanabe, Tomoki Gunjima, Hiromasa Sato | 2000-09-12 |