Erwin Laar
11Patents
7h-index
15Co-inventors
63Inventor score
Filing activity: Sep 22, 1975 → Dec 3, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4134663A | Method and apparatus for feeding replenishment chemicals in film processors | Physics | 20 | Expired |
| US4215719A | Intermixing of fluid in plural tanks while maintaining the fluid levels in the tanks independent | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4182567A | Apparatus for continuously processing photographic films or the like | Physics | 15 | Expired |
| US4104668A | Continuous processor for photographic films or the like | Physics | 13 | Expired |
| US4263932A | Accurate dosing of regenerating fluid to processing-fluid-tank in film developing machine | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4181270A | Apparatus for winding webs of photographic paper of the like | Performing Operations; Transporting | 9 | Expired |
| US4245397A | Apparatus for drying webs of photographic paper or the like | Physics | 9 | Expired |
| US4279371A | Arrangement for transporting strip-shaped material | Physics | 6 | Expired |
| US4002310A | Reel for photographing paper or the like | Performing Operations; Transporting | 6 | Expired |
| US4638936A | Apparatus for treatment of webs of photographic material | Physics | 2 | Expired |
| US7270534B2 | Operating system for an externally operated part of a closing unit | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.