| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 20 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Optics | |
| #3 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Optical systems | |
| #3 | Printing processes | |
| #4 | Television | |
| #5 | Typewriters |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yamasaki Fumitomo | 20 |
| #2 | Komma Yoshiaki | 14 |
| #3 | Tanaka Toshiyasu | 7 |
| #4 | Wakabayashi Kanji | 5 |
| #5 | Hayashi Katsuhiko | 5 |
| #6 | Aikoh Hideki | 4 |
| #7 | Tojo Tomoaki | 3 |
| #8 | Asada Junichi | 2 |
| #9 | Terahara Noriaki | 2 |
| #10 | Kajino Osamu | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2012213052A1 | Optical head, optical disc device, information processing device, and objective lens | |
| US2010246343A1 | Optical disc device, optical head, and information processing device | |
| US2009080298A1 | Optical head, optical head manufacturing method and optical disc device | |
| US2010128102A1 | Optical disc label printer, thermosensitive recording printer and thermosensitive recording method |