Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7171178 | Tuning circuit having amplitude-varying function | Masahiro Umewaka, Hiroya Yamamoto, Akira Hyogo, Keiji Morijiri | 2007-01-30 |
| 6791413 | Variable gain amplifier with a gain exhibiting a linear in dB characteristic relative to a control voltage | Hiroshi Komurasaki, Hisayasu Satoh, Kinya Hosoda, Akira Hyogo | 2004-09-14 |