| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Electrical machinery and energy | |
| #3 | Audio-visual technology | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Measuring electric variables | |
| #2 | Electric switches | |
| #3 | Advertising | |
| #4 | Mechanical control devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nakajima Hirokatsu | 12 |
| #2 | Chaen Satoru | 10 |
| #3 | Nishi Kouji | 1 |
| #4 | Inoue Masatomo | 1 |
| #5 | Misaki Takashi | 1 |
| #6 | Taga Shunji | 1 |