Friedrich Schwing
30Patents
9h-index
11Co-inventors
72Inventor score
Filing activity: Mar 27, 1975 → Dec 3, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6871667B2 | Distribution device for thick matter, especially for concrete | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6463958B1 | Distributing device for thick substances, especially concrete | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4178142A | Double-cylinder pump especially for conveying cement | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4057373A | Multi-cylinder pump for concrete | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4280771A | Apparatus for distributing concrete, especially in the shuttering of gallery linings in mine and tunnel workings | Fixed Constructions | 11 | Expired |
| US4373225A | Piping valve with a housing for the transfer of a wiper insertable in conduits that supply pressurized viscous material, preferably concrete | Performing Operations; Transporting | 11 | Expired |
| US4343598A | Viscous material pump, particularly for concrete | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4373875A | Viscous material pump, in particular for the conveyance of concrete | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4951806A | Double belt conveyor band | Performing Operations; Transporting | 10 | Expired |
| US4465441A | Two-cylinder pump for heavy flowable materials, such as concrete | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5380174A | Pump for thick matter having delivery cylinders, in particular a two-cylinder concrete pump | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5316453A | Slurry pump with discharge cylinders, especially two-cylinder concrete pump | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4799573A | Adjustable personnel platform | Fixed Constructions | 8 | Expired |
| US4191513A | Pump for conveying cement | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4019839A | Distributing valves for viscous materials | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4472118A | Multi-way valves for pumps for conveying heavy flowable materials | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4776450A | Twin-belt band conveyor | Performing Operations; Transporting | 6 | Expired |
| US4681022A | Two-cylinder viscous liquid pump with pipe switch | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5325761A | Switching arrangement for controlling the speed of hydraulic drives | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5513911A | Vehicle mixer | Performing Operations; Transporting | 4 | Expired |
| USRE32719E | Multi-way valves for pumps for conveying heavy flowable materials | General | 3 | Expired |
| USRE32657E | Two-cylinder pump for heavy flowable materials, such as concrete | General | 3 | Expired |
| US5263828A | Two-cylinder thick matter pump having a piston storage | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4556370A | Twin cylinder pumps, more specially for concrete | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6206662A | Two-cylinder slurry pump | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.