Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835924 | Optical encoder for detecting changes in diffraction interference patterns | Tatsuya Maruyama, Jiro Minabe, Shin Yasuda | 2004-12-28 |
| 6803153 | Optical storage medium, optical storage method; optical storage apparatus, optical reading method, optical reading apparatus, optical retrieving method and optical retrieving apparatus | Yasunari Nishikata, Tsutomu Ishii | 2004-10-12 |