| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 41 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Thermal processes | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements | |
| #5 | Measurement | |
| #6 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Siphons | |
| #3 | Heat-exchange device details | |
| #4 | Unspecified technologies | |
| #5 | Venting or aerating devices | |
| #6 | Measuring volume | |
| #7 | Steam condensers | |
| #8 | Separation | |
| #9 | Heat-exchanger without contact | |
| #10 | Burners |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koerting Ernst | 8 |
| #2 | Zimmermann Hans | 5 |
| #3 | Knauf Paul W | 5 |
| #4 | Hellmer Ralph E | 2 |
| #5 | Gerber Walter H | 2 |
| #6 | Karl Muhleisen | 2 |
| #7 | Teller Martin P | 1 |
| #8 | Decker Howard H | 1 |
| #9 | Ernest Derby Samuel | 1 |
| #10 | Lovekin Luther D | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2218789A | Rotameter | |
| US2246464A | Luminous scale rotameter | |
| US2260516A | Rotameter | |
| US2223242A | Steam jet exhauster | |
| US2223237A | Vapor condenser | |
| US2230973A | Rotameter | |
| US2182172A | Specific gravity indicator | |
| US2070539A | Fin tube | |
| US2085361A | Steam jet exhauster | |
| US2012920A | Fluid cooler or heat exchanger | |
| US2031425A | Heat exchanger | |
| US2029633A | Flow indicator | |
| US1905014A | Combined shut-off and trip valve | |
| US1964357A | Scrubber | |
| US1880186A | Quick opening steam valve actuated by a cylinder | |
| US1878582A | Barometric condenser | |
| US1868271A | Heat exchanger | |
| US1622945A | Low-level jet condenser | |
| US1506433A | Gear-actuated valve | |
| US1400424A | Valve structure |