| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 7 | |
| #2 | United States | 2 | |
| #3 | EPO (European Patent Office) | 1 | |
| #4 | Taiwan | 1 | |
| #5 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic communication technologies | |
| #2 | Audio-visual technology | |
| #3 | Semiconductors |
| # | Technology | |
|---|---|---|
| #1 | Amplification control | |
| #2 | Television | |
| #3 | Semiconductor devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sekiguchi Hiroshi | 12 |
| #2 | Fuchikami Takaaki | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2018055076A | Digital audio information recording medium, program, and audio playback device | |
| JP2007279644A | Voice information processing method and voice information reproducing method | |
| WO2006051586A1 | Sound electronic circuit and method for adjusting sound level thereof | |
| JP2004318164A | Method of controlling sound volume of sound electronic circuit | |
| JP2001040501A | Settle string for briefs | |
| JPH0739652A | Drift running machine | |
| JPS5611536A | Keyboard | |
| JPS55137973A | Typewriter |