H. Alfred Eberhardt
42Patents
15h-index
9Co-inventors
74Inventor score
Filing activity: Dec 24, 1975 → Jan 8, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USRE36196E | Air supply system for firefighting apparatus | General | 52 | Expired |
| US4337830A | Pump assembly | Mechanical Engineering; Lighting; Heating | 51 | Expired |
| US5145014A | Air supply system for firefighting apparatus | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4064891A | Plural fluid proportioning apparatus | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4503812A | Starting system for a portable engine-pump unit | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4712516A | Fuel supply for a rotary piston engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4633895A | Fluid proportioning apparatus | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4976319A | Water driven fan for firefighting | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4643652A | Portable engine-pump assembly | Emerging Cross-Sectional Technologies | 16 | Expired |
| USD303533S | Housing for a portable pump | General | 16 | Expired |
| US4089345A | Discharge valve | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4786239A | Pumping system selectably operable as a fire pump or a hydraulic pump | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4979693A | Portable hose reel | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4448256A | Foam liquid proportioner | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4245952A | Pump | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4018544A | Centrifugal pump | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4676065A | Portable engine-pump assembly | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4311440A | Pump | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4762281A | Drive arrangements for comminutor-pump assembly | Performing Operations; Transporting | 11 | Expired |
| US4720050A | Comminutor-pump assembly | Performing Operations; Transporting | 11 | Expired |
| US4907654A | Water driven fan system for firefighting | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4553902A | Floating portable pump | Human Necessities | 10 | Expired |
| US5215499A | Positive pressure safety system | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US5085770A | Oil separator | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4209282A | Pump assembly | Mechanical Engineering; Lighting; Heating | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.