Berthold Herrmann
10Patents
4h-index
14Co-inventors
57Inventor score
Filing activity: Feb 21, 1975 → Jun 17, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4773513A | Hydrodynamic working circuit with device for reducing air circulation losses | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US3989127A | Hydrodynamic brake system | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4276970A | High speed hydrodynamic brake | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4411340A | Hydrodynamic brakes | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US9297276B2 | Side channel blower, in particular a secondary air blower for an internal combustion machine | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US4421213A | Hydrodynamic torque-transfer unit, especially a hydrodynamic brake | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US9970337B2 | Actuator for valves in internal combustion engines | Emerging Cross-Sectional Technologies | 1 | Active |
| US11846225B2 | Valve device for an internal combustion engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US9086006B2 | Valve device for internal combustion engines | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9719608B2 | Actuator for valves in internal combustion engines | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.