Werner Sperber
5Patents
3h-index
5Co-inventors
46Inventor score
Filing activity: Oct 23, 1978 → Aug 11, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4218123A | Machine for developing photographic paper or the like | Physics | 10 | Expired |
| US4279371A | Arrangement for transporting strip-shaped material | Physics | 6 | Expired |
| US4164371A | Photographic developing machine | Physics | 5 | Expired |
| US4403846A | Arrangement for introducing photosensitive strips into and transporting the same through a developing machine | Physics | 2 | Expired |
| US4918478A | Tank with rack for wet processing photographic material | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.