| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | China | 1 | |
| #3 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Venting or aerating devices | |
| #3 | Servomotors | |
| #4 | Testing of structures |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson John Leslie | 15 |
| #2 | Johnson James G | 15 |
| Publication | Filing date | Title |
|---|---|---|
| US2009072180A1 | Double action directional fluid flow valve | |
| US7490625B1 | Pilot valve manifold |