| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 23 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Chemical engineering | |
| #4 | Control | |
| #5 | Mechanical elements | |
| #6 | Engines, pumps and turbines | |
| #7 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Earth drilling | |
| #3 | Systems controlling non-electric variables | |
| #4 | Separation | |
| #5 | Unspecified technologies | |
| #6 | Venting or aerating devices | |
| #7 | Measuring volume | |
| #8 | Siphons | |
| #9 | Liquefaction of gases by pressure | |
| #10 | Pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Parks Asbury S | 24 |
| Publication | Filing date | Title |
|---|---|---|
| US3052254A | Pressure control devices | |
| US2907347A | Control units for pressure-actuated devices | |
| US3018797A | Valves | |
| US3064474A | Metering apparatus | |
| US2739664A | Methods of and means for dehydrating and processing streams | |
| US2768703A | Methods of and means for separating hydrocarbon liquids and water from gas streams | |
| US2665711A | Fluid motor valve | |
| US2665565A | Separator | |
| US2638223A | Liquid knockout apparatus | |
| US2595602A | Means for separating gas from liquids | |
| US2637945A | Fluid pressure control device | |
| US2638168A | Well packer | |
| US2567527A | Packing assembly | |
| US2637947A | Pilot regulator | |
| US2631606A | Pressure regulator | |
| US2638110A | Valve control apparatus | |
| US2551334A | Control apparatus | |
| US2637946A | Fluid pressure regulator | |
| US2458631A | Drill stem tester | |
| US2348357A | Gas and oil separator |