Franz Muchel
27Patents
11h-index
16Co-inventors
72Inventor score
Filing activity: Jan 10, 1978 → Aug 28, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4364629A | Operation microscope having a small working distance | Physics | 50 | Expired |
| US4523821A | Device for examining anterior sections of the eye | Human Necessities | 46 | Expired |
| US4518231A | Stereomicroscope | Physics | 45 | Expired |
| US4420219A | Optical waveguide connector using aspheric lenses | Physics | 42 | Expired |
| US4691997A | Microscope tube | Physics | 35 | Expired |
| US4669839A | Optical system for therapeutic use of laser light | Human Necessities | 34 | Expired |
| US4465348A | Apparatus for the subjective and objective determination of refraction | Human Necessities | 30 | Expired |
| US4248505A | Ophthalmological instrument | Human Necessities | 15 | Expired |
| US4365871A | Optical system for microscopes | Physics | 11 | Expired |
| US4411502A | Ophthalmological instrument for examination of anterior and posterior portions of the eye | Human Necessities | 11 | Expired |
| US4215914A | Optical system having a radial difference in refractive index | Physics | 11 | Expired |
| US4249802A | Ophthalmological instrument | Human Necessities | 11 | Expired |
| US5103341A | UV-capable dry lens for microscopes | Physics | 11 | Expired |
| US4786161A | Apparatus for examination and surgery of the anterior and posterior portions of the eye | Human Necessities | 10 | Expired |
| US4525042A | Optical system of variable focal and back-focal length | Physics | 10 | Expired |
| US4403841A | Apparatus for examining anterior portions of the eye | Human Necessities | 9 | Expired |
| US4222634A | Wide angle objective for examination of the eye | Physics | 9 | Expired |
| US4272165A | Optical system for illuminating the ground of the eye | Human Necessities | 7 | Expired |
| US5032011A | Transmitted-light illuminating arrangement for a microscope | Physics | 6 | Expired |
| US4220401A | Hand-held ophthalmoscope | Human Necessities | 5 | Expired |
| US4270842A | Optical system for forming an image of the retina | Human Necessities | 4 | Expired |
| US5488512A | Color corrected ocular | Physics | 3 | Expired |
| US4427269A | Method and apparatus for automatically compensating for rotation of images in articulated optical systems | Physics | 2 | Expired |
| US7289271B2 | Tube lens unit with chromatically compensating effect | Physics | 2 | Active |
| US4606617A | Adapter for illumination or laser radiation for surgical microscopes | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.