Ernst Hatz
20Patents
8h-index
12Co-inventors
72Inventor score
Filing activity: Dec 5, 1975 → Dec 28, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4615554A | Screw-in fastener for a tubular anchor embedded in a concrete element | Fixed Constructions | 36 | Expired |
| US4293092A | Heating system with heat pump and auxiliary heater | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4510897A | Mechanism for actuating the valve rockers of an internal combustion engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4398762A | Pickup device for lifting concrete body | Fixed Constructions | 17 | Expired |
| US4975029A | Fuel injection pump for an internal combustion engine having pre-injection and main injection | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4141334A | Sound-proofed internal combustion engine | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4149512A | Internal combustion engine having a noise deadening shroud | Performing Operations; Transporting | 11 | Expired |
| US4077383A | Internal combustion engine with sound deadening jacketing | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US6566783B2 | Permanent magnet generator having internal stator with adjustable air gap | Electricity | 8 | Expired |
| US6737775B2 | Power generating installation that compises a drive engine and a generator | Electricity | 8 | Expired |
| US4142503A | Signal indicating device on internal combustion engines | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4897024A | Fuel injection pump for internal combustion engines | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6710494B2 | Power generating installation that comprises a generator and a reciprocating internal combustion engine as drive | Electricity | 7 | Expired |
| US4215664A | Internal combustion engine with a sound-proofing shell | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4397269A | Internal combustion engine with a circulating cooling medium | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4386589A | Internal combustion engine | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4064853A | Internal combustion engine with a pressure-compensating arrangement in the crankcase of the engine | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4141422A | Vehicle, in particular tractor | Performing Operations; Transporting | 3 | Expired |
| US4338524A | Drive unit for a compressor of a heat pump | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4766856A | Starting handle for internal combustion engines | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.