| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Australia | 2 | |
| #3 | China | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Control |
| # | Technology | |
|---|---|---|
| #1 | Stringed musical instruments | |
| #2 | Electrophonic musical instruments | |
| #3 | Teaching materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mutou Noritaka | 5 |
| #2 | Mutou Ritsuko | 4 |
| #3 | Mutou Kanpei | 4 |
| #4 | Mutou Saburou | 3 |
| #5 | Ritsuko Mutou | 1 |
| #6 | Saburou Mutou | 1 |
| #7 | Noritaka Mutou | 1 |
| #8 | Mutou Seburou | 1 |
| #9 | Kanpei Mutou | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP1282111A1 | Keyboard for musical instrument | |
| EP1117084A1 | Music notation implement and music |