| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 10 | |
| #2 | United States | 6 | |
| #3 | Germany | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Electric discharge tubes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Shirota Kohei | 3 |
| #2 | Yanaka Takashi | 3 |
| #3 | Yonezawa Akira | 3 |
| #4 | Koike Hirotami | 3 |
| #5 | Ohsawa Kazuo | 2 |
| #6 | Kyogoku Mitsusuke | 1 |
| #7 | Watanabe Masaru | 1 |
| #8 | Kyogoku Hideaki | 1 |
| #9 | Kyogoku Mitsuske | 1 |