Helmut Hofmann
10Patents
7h-index
6Co-inventors
59Inventor score
Filing activity: Sep 29, 1976 → Apr 1, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4351077A | Cleaning apparatus for submerged surfaces | Fixed Constructions | 75 | Expired |
| US4208752A | Cleaning apparatus for submerged surfaces | Fixed Constructions | 54 | Expired |
| US4133068A | Cleaning apparatus for submerged surfaces | Fixed Constructions | 50 | Expired |
| US4761848A | Suction-operated automatic swimming pool cleaner | Fixed Constructions | 40 | Expired |
| US4530125A | Swimming pool cleaner component | Fixed Constructions | 25 | Expired |
| US4057714A | Durability or service-life monitoring device for a turbogenerator shaft | Physics | 15 | Expired |
| US4793287A | Farrowing station with an electronic control | Human Necessities | 10 | Expired |
| US7498697B2 | Marx generator | Electricity | 6 | Expired |
| US7002300B2 | Microwave generator and method of radiating microwave energy | Electricity | 5 | Expired |
| US7233084B2 | Microwave generator | Mechanical Engineering; Lighting; Heating | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.