Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8518512 | Production method for optical disc master, optical disc master, stamper, and optical disc | Katsunori Takeuchi | 2013-08-27 |
| 5874877 | Circuit breaker | Yoshiaki Kawashima, Kazuhiko Satoh, Makoto Ogasawara | 1999-02-23 |