Joachim Grupp
44Patents
17h-index
37Co-inventors
81Inventor score
Filing activity: Nov 14, 1988 → Mar 11, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5608567A | Variable transparency electro-optical device | Physics | 174 | Expired |
| US5455808A | Timepiece with a mobile display | Physics | 103 | Expired |
| US5984485A | Uniform illumination device for the dial of a display device | Physics | 70 | Expired |
| US6184871A | Identification device of a manual action on a surface, in particular for a timeplace | Physics | 48 | Expired |
| US4904060A | Liquid crystal display cell having a diffusely-reflective counter electrode | Physics | 46 | Expired |
| US6728166B2 | Electronic device for generating and displaying an item of information | Physics | 38 | Expired |
| US6600527B1 | Display assembly including two superposed display devices | Physics | 36 | Expired |
| US5742006A | Electric cell of the type comprising two parallel plates or substrates in particular made of plastic material separated from each other by a sealing frame | Physics | 31 | Expired |
| US6005654A | Liquid crystal display device intended, in particular, to form a color image display screen | Physics | 30 | Expired |
| US7009648B2 | Method for operating a CMOS image sensor | Electricity | 30 | Expired |
| US5745208A | Electrical cell of the type comprising two plastic parallel support plates, set apart from each other, carrying electrodes on their faces | Physics | 28 | Expired |
| US5740130A | Decoration display device and timepiece comprising such display device | Physics | 26 | Expired |
| US8507135B2 | Electrically conductive nanocomposite material comprising sacrificial nanoparticles and open porous nanocomposites produced thereof | Emerging Cross-Sectional Technologies | 24 | Active |
| US4923286A | Display cell | Physics | 24 | Expired |
| US6753937B2 | Reflective liquid crystal display device having a black absorbent layer | Physics | 22 | Expired |
| US5037185A | Liquid crystal cell provided with bubble traps | Physics | 18 | Expired |
| US5453960A | Watch including a manual control device | Physics | 17 | Expired |
| US4968930A | Display device for measuring instruments | Physics | 16 | Expired |
| US5484205A | Temperature indicator and watch provided with such a temperature indicator | Physics | 15 | Expired |
| US7349018B2 | CMOS image sensor and method for operating a CMOS image sensor in a weak inversion mode with increased dynamic range | Electricity | 14 | Expired |
| US5430692A | Watch comprising a device for indicating the temperature | Physics | 13 | Expired |
| US6605791B2 | Portable electronic device such as, in particular, a timepiece, fitted with a push-button | Physics | 13 | Expired |
| US7843061B2 | Transparent substrate with invisible electrodes and device incorporating the same | Emerging Cross-Sectional Technologies | 13 | Active |
| US6271975A | Light collecting optical device forming a multiple focal distance lens | Physics | 13 | Expired |
| US6452872B1 | Device for the oriented illumination of a surface by a microprism guide | Physics | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.