Peter Janssen
51Patents
15h-index
37Co-inventors
84Inventor score
Filing activity: Apr 29, 1974 → Jun 17, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5442414A | High contrast illumination system for video projector | Electricity | 149 | Expired |
| US5410370A | Single panel color projection video display improved scanning | Physics | 132 | Expired |
| US5416514A | Single panel color projection video display having control circuitry for synchronizing the color illumination system with reading/writing of the light valve | Physics | 128 | Expired |
| US5548347A | Single panel color projection video display having improved scanning | Physics | 67 | Expired |
| US5508738A | Single panel color porjection video display having control circuitry for synchronizing the color illumination system with reading/writing of the light | Physics | 64 | Expired |
| US6320565A | DAC driver circuit with pixel resetting means and color electro-optic display device and system incorporating same | Electricity | 62 | Expired |
| US4037252A | Apparatus for reading a disc-shaped record carrier with plural scanning spots for stable radial tracking | Physics | 60 | Expired |
| US5662401A | Integrating lens array and image forming method for improved optical efficiency | Physics | 59 | Expired |
| US5532763A | Single panel color projection video display | Physics | 53 | Expired |
| US4683520A | Mechanical shock mount system for electrical apparatus | Electricity | 38 | Expired |
| US4561081A | Opto-electronic apparatus for inscribing and/or reading recording tracks by means of a radiation beam | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US5528318A | Single panel color projection video display having improved scanning | Physics | 33 | Expired |
| US5608467A | Single panel color projection video display | Physics | 32 | Expired |
| US4022986A | Playback unit for a long-playing record of a time division multiplexed audio signal | Physics | 31 | Expired |
| US4510508A | Optical disc pressure-collapsible cover | Physics | 16 | Expired |
| US5808410A | Flat panel light source for liquid crystal displays | Electricity | 15 | Expired |
| US6384817B1 | Apparatus for applying voltages to individual columns of pixels in a color electro-optic display device | Physics | 15 | Expired |
| US5490013A | Compensation plate for tilted plate optical aberrations | Electricity | 12 | Expired |
| US6023309A | Reflective liquid crystal display having integral light shielding | Physics | 11 | Expired |
| US4005260A | Device for reading a disk-shaped record carrier with time base correction | Electricity | 11 | Expired |
| US4698798A | Device for translating a slide | Electricity | 10 | Expired |
| US4200882A | Color television CRT beam current correction circuit | Electricity | 10 | Expired |
| US5013384A | Vacuum system | Electricity | 9 | Expired |
| US4349904A | Error correction circuit using character probability | Electricity | 9 | Expired |
| US3969574A | Tubular player arm for an optical recording and reproducing device with drive coil and tachogenerator coil on other end | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.