Robert S. Hilbert
6Patents
3h-index
4Co-inventors
42Inventor score
Filing activity: Mar 26, 1979 → Jun 26, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4293196A | Objective lens system with aspheric Fresnel elements | Physics | 21 | Expired |
| US4249805A | Composite photography system | Physics | 10 | Expired |
| US4688906A | Three dimensional reflex lens systems | Electricity | 4 | Expired |
| US4738518A | Three dimensional reflex lens systems | Electricity | 2 | Expired |
| US4844601A | Three-dimensional reflex lens systems | Electricity | 1 | Expired |
| US4878744A | Three dimensional reflex lens systems | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.