| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 13 | |
| #2 | United States | 13 |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yamamoto Masaki | 2 |
| #2 | Sato Kiyoshi | 1 |
| #3 | Yamaguchi Masahiko | 1 |
| #4 | Tsutsumi Jyoji | 1 |
| #5 | Zama Hiroyoshi | 1 |
| #6 | Teiichi Sato | 1 |
| #7 | Issei Takahashi | 1 |
| #8 | Hebiguchi Hiroyuki | 1 |
| #9 | Shinichi Kuzuki | 1 |
| #10 | Juji Minobu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2006099922A1 | Variable gain amplifying circuit with matchable input/output impedance | |
| US4913285A | Water-and-dust-proof push-button switch housing dummy terminal for air venting |