| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | India | 6 | |
| #3 | Australia | 5 | |
| #4 | China | 3 | |
| #5 | Germany | 3 | |
| #6 | United Kingdom | 3 | |
| #7 | Italy | 3 | |
| #8 | Mexico | 3 | |
| #9 | Canada | 2 | |
| #10 | EPO (European Patent Office) | 2 | |
| #11 | France | 2 | |
| #12 | Taiwan | 2 | |
| #13 | WIPO (World Intellectual Property Organization) | 2 | |
| #14 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Electrical machinery and energy | |
| #3 | Measurement | |
| #4 | Control | |
| #5 | Machines | |
| #6 | Digital networks | |
| #7 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Electric switches | |
| #3 | Gearing | |
| #4 | Special measuring | |
| #5 | Mechanical control devices | |
| #6 | Control or regulating systems | |
| #7 | Unspecified technologies | |
| #8 | Pumps | |
| #9 | Unspecified technologies | |
| #10 | Digital information transmission |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wilkinson Ivan E | 18 |
| #2 | Auxier Robert W | 17 |
| #3 | Talbott Kenneth R | 12 |
| #4 | Hylton Charles L | 9 |
| #5 | Hooss William C | 6 |
| #6 | Austin James A | 6 |
| #7 | Gahagen Thomas D | 5 |
| #8 | Dolenti William T | 5 |
| #9 | Adams Iv David V | 5 |
| #10 | Adams David V Iv | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US5719559A | System and method for the verification of a digital control system | |
| US5640007A | Optical encoder comprising a plurality of encoder wheels | |
| US5400360A | Repeater for a digital control system | |
| US4994001A | Valve actuator differential worm planetary gear drive | |
| US4940011A | Valve actuator two rotor three position indicator | |
| US4839475A | Modular switch assembly having wiping contacts | |
| US4896562A | Valve actuator differential worm planetary gear drive | |
| US1850094A | Valve | |
| US1764936A | Control means for power-operated mechanisms |