| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 62 | |
| #2 | Canada | 10 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements | |
| #5 | Chemical engineering | |
| #6 | Machine tools | |
| #7 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Unspecified technologies | |
| #3 | Pumps | |
| #4 | Venting or aerating devices | |
| #5 | Separation | |
| #6 | Unspecified technologies | |
| #7 | Shafts | |
| #8 | Non-positive-displacement pumps | |
| #9 | Fire-fighting | |
| #10 | Punching metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Eisenhauer Charles P | 42 |
| #2 | Zimmerman Arthur C | 11 |
| #3 | Eisenhauer Charles Philip | 5 |
| #4 | Steger Elmer F | 3 |
| #5 | Hix Wolfe H | 3 |
| #6 | Eisenhauer Charles Phillip | 2 |
| #7 | Rogers Walstine C | 2 |
| #8 | Haas Edward W | 2 |
| #9 | Eickmeyer Earl E | 2 |
| #10 | Flynt Louis W G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB867586A | Submersible type pump | |
| US3025800A | Submersible type pump | |
| US2805835A | Valve structure | |
| US2710018A | Brine valve construction for water softening systems | |
| US2694454A | Fire fighting equipment | |
| US2636560A | Timed valve | |
| US2694455A | Fire fighting equipment | |
| US2489636A | Ejector assembly | |
| US2309032A | Unitary fluid control valve and method of operation | |
| US2201876A | Water seepage interceptor | |
| US2063863A | Deep-well pump | |
| US2061789A | Deep well pump | |
| US2055226A | Stuffing box | |
| US2078361A | Water softener | |
| US2067808A | Water softening apparatus | |
| US1996136A | Apparatus for producing soft boiler water | |
| US1932117A | Tank for water softeners | |
| US1958176A | Portable water softener | |
| US2088104A | Water softener | |
| US2050966A | Water softener |