Helmut Federmann
10Patents
7h-index
5Co-inventors
55Inventor score
Filing activity: Nov 3, 1980 → Jan 21, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4421497A | Fiber-reinforced drive shaft | Mechanical Engineering; Lighting; Heating | 46 | Expired |
| US4380443A | Fiber-reinforced drive shaft | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US5802784A | Window apparatus for providing and directing glare-free sunlight to a room | Physics | 36 | Expired |
| US4358284A | Fiber-reinforced driveshaft | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4634217A | High tensile wire provided with light guide sensor | Physics | 14 | Expired |
| US4900920A | Device for and method of measuring minute elongations by means of light wave conductor sensors | Physics | 10 | Expired |
| US4840480A | Light conduit arrangement for monitoring a physical condition of a structural part | Physics | 7 | Expired |
| US4840452A | Light wave conductor-sensor for tension | Physics | 7 | Expired |
| US4900922A | Arrangement of a light wave conductor-phase sensor for the measurement of minute elongations | Physics | 1 | Expired |
| US4943714A | Method of continuous measurement of damping in an elongated light wave conductor-sensor having only one accessible end | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.