Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9165476 | Portable piano keyboard computer | Keisuke Shingu, Ryuichiro Kuzuryu | 2015-10-20 |
| 6819273 | Digital-analog-conversion circuit having function of automatic offset adjustment | Tohru Mizutani, Hiromi Nanba, Atsushi Matsuda, Atsushi Hitaka, Masashi Okubo +1 more | 2004-11-16 |
| 6456170 | Comparator and voltage controlled oscillator circuit | Yuji Segawa, Masaru Otsuka, Osamu Kikuchi, Akira Haga | 2002-09-24 |
| 5059890 | Constant current source circuit | Kunihiko Gotoh | 1991-10-22 |