InFocus Systems, Inc.
52Patents
0Active
52Granted
37Portfolio score
Filing activity: Aug 17, 1988 → Nov 21, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4966441A | Hybrid color display system | Physics | 207 | Expired |
| US4917465A | Color display system | Physics | 155 | Expired |
| US5537232A | Reflection hologram multiple-color filter array formed by sequential exposure to a light source | Emerging Cross-Sectional Technologies | 132 | Expired |
| US5124818A | LCD system having improved contrast ratio | Physics | 78 | Expired |
| US5050965A | Color display using supertwisted nematic liquid crystal material | Physics | 75 | Expired |
| US5101197A | Electronic transparency method and apparatus | Emerging Cross-Sectional Technologies | 69 | Expired |
| US5355188A | Method and apparatus for distortion correction in optical projectors | Physics | 68 | Expired |
| US6053615A | Image projector with polarization conversion system | Physics | 68 | Expired |
| US5420604A | LCD addressing system | Physics | 66 | Expired |
| US5967636A | Color wheel synchronization apparatus and method | Electricity | 65 | Expired |
| US5459495A | Gray level addressing for LCDs | Physics | 58 | Expired |
| US5793352A | Source coupler for multimedia projection display system | Physics | 58 | Expired |
| USD381634S | Hand-held remote control device | General | 57 | Expired |
| US5485173A | LCD addressing system and method | Physics | 50 | Expired |
| US5353075A | Convertible flat panel display system | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5805233A | Method and apparatus for automatic pixel clock phase and frequency correction in analog to digital video signal conversion | Electricity | 49 | Expired |
| US5548422A | Notch filters with cholesteric polarizers with birefringent film and linear polarizer | Physics | 45 | Expired |
| US5585816A | Displaying gray shades on display panel implemented with active addressing technique | Physics | 44 | Expired |
| US5526011A | Electronic transparency with data storage medium | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5546102A | Integrated driver for display implemented with active addressing technique | Physics | 41 | Expired |
| US5473338A | Addressing method and system having minimal crosstalk effects | Physics | 40 | Expired |
| US5767916A | Method and apparatus for automatic pixel clock phase and frequency correction in analog to digital video signal conversion | Electricity | 40 | Expired |
| US4952036A | High resolution LCD display system | Physics | 40 | Expired |
| US5608551A | Display panel assembly with microlens structure | Physics | 38 | Expired |
| US6147812A | Projection zoom lens system and projector apparatus | Physics | 36 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.