David G. Freier
39Patents
10h-index
75Co-inventors
78Inventor score
Filing activity: Oct 24, 1997 → Apr 30, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8469575B2 | Backlight and display system using same | Physics | 78 | Active |
| US8848132B2 | Hollow backlight with structured films | Physics | 60 | Active |
| US6301418A | Optical waveguide with diffuse light extraction | Emerging Cross-Sectional Technologies | 52 | Expired |
| US6123442A | Articles with diffuse reflection of light from light fibers | Emerging Cross-Sectional Technologies | 48 | Expired |
| US8192048B2 | Lighting assemblies and systems | Mechanical Engineering; Lighting; Heating | 43 | Active |
| US6282821A | Low-loss face diffuser films for backlit signage and methods for using same | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6641880B1 | Signage having films to reduce power consumption and improve luminance uniformity and method for using same | Emerging Cross-Sectional Technologies | 27 | Expired |
| US8523419B2 | Thin hollow backlights with beneficial design characteristics | Physics | 15 | Active |
| US8794809B2 | Light injection coupler for coupling light guides | Physics | 14 | Active |
| US6416201B1 | Illuminated sign with lamp masks for uniform illumination | Physics | 12 | Expired |
| USD752773S1 | Bollard luminaire window | General | 9 | Active |
| US8608363B2 | Recycling backlights with semi-specular components | Physics | 8 | Active |
| US7898520B2 | Method and apparatus for backlight simulation | Physics | 7 | Active |
| US8743462B2 | Concentrating daylight collector | Emerging Cross-Sectional Technologies | 6 | Active |
| US9976714B2 | Luminaire for crosswalk, method for making, and method for controlling | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US8596809B2 | Suspended optical film | Physics | 5 | Active |
| US8098434B1 | Optical decollimator for daylighting systems | Physics | 5 | Active |
| US7801716B2 | Computerized modeling for design and evaluation of organic light emitting diodes | Physics | 4 | Active |
| US8251527B1 | Light duct bend | Physics | 4 | Active |
| US9353930B2 | Light duct tee extractor | Physics | 3 | Active |
| US9360676B2 | Light duct tee splitter | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8740442B2 | Backlight and display system using same | Physics | 2 | Active |
| US9091408B2 | Recycling backlights with semi-specular components | Physics | 2 | Active |
| US8801207B2 | Light directing sign substrate | Physics | 2 | Active |
| US10566391B2 | OLED display with improved color uniformity | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.