Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6773781 | Multi-layer information recording medium and information recording and reproducing apparatus | Takanori Maeda | 2004-08-10 |
SO
Seiichi Ohsawa
Overall (2004): #118,422 of 270,089Top 45%
1
Patents 2004