Frank L. Harwath
18Patents
9h-index
4Co-inventors
65Inventor score
Filing activity: Nov 13, 1975 → Jun 9, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4958997A | Two-stage gear pump with improved spur gear mounting | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4858884A | Diaphragm-actuated valve for a gear pump | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4171939A | Arrangement for mounting a gear on a shaft | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4490105A | Fuel supply system for a recirculating fuel burner | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4021155A | Oil burner pumping system with air purging valve | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4391580A | Liquid fuel supply system for an atomization burner nozzle | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US6129176A | Sound attenuating motor end shield | Electricity | 10 | Expired |
| US5145328A | Fuel supply unit for an oil burner | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4898523A | Gear pump with ring-type shaft retainer | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5692680A | Fuel supply unit for an oil burner | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4728271A | Gear pump with improved pinion mounting | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4685871A | Gear pump with means for preventing shaft lock-up | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5346174A | Spring-biased valve assembly for a gear pump | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5368068A | Relief valve for the fuel pump of an oil burner | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6155804A | Sound attenuating motor end shield for a hydraulic pump | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US5316457A | Gear pump with improved gear/shaft retention | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8076903B2 | Electric power storage and delivery system and method of operation | Emerging Cross-Sectional Technologies | 0 | Active |
| US4856553A | Pump with valve adjusting screw | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.