Kenneth A. Epstein
88Patents
23h-index
129Co-inventors
91Inventor score
Filing activity: Apr 11, 1994 → Dec 12, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5608550A | Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector | Physics | 268 | Expired |
| US6379016B1 | Light guide with extraction structures | Emerging Cross-Sectional Technologies | 145 | Expired |
| US6576887B2 | Light guide for use with backlit display | Emerging Cross-Sectional Technologies | 94 | Expired |
| US7255469B2 | Phosphor based illumination system having a light guide and an interference reflector | Electricity | 93 | Expired |
| US7052168B2 | Illumination device | Physics | 91 | Expired |
| US6845212B2 | Optical element having programmed optical structures | Emerging Cross-Sectional Technologies | 87 | Expired |
| US6356391B1 | Optical film with variable angle prisms | Physics | 87 | Expired |
| US6592234B2 | Frontlit display | Physics | 61 | Expired |
| US8848132B2 | Hollow backlight with structured films | Physics | 60 | Active |
| US6707611B2 | Optical film with variable angle prisms | Physics | 57 | Expired |
| US7303315B2 | Illumination assembly using circuitized strips | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5976686A | Diffuse reflective articles | Emerging Cross-Sectional Technologies | 49 | Expired |
| US7695180B2 | Illumination assembly and system | Electricity | 48 | Active |
| US5894539A | Line light source having light pipe with rectangular cross-section | Physics | 33 | Expired |
| US7446827B2 | Direct-lit liquid crystal displays with laminated diffuser plates | Physics | 32 | Expired |
| US7223005B2 | Hybrid lightguide backlight | Physics | 31 | Expired |
| US6560026B2 | Optical film with variable angle prisms | Physics | 29 | Expired |
| US7436469B2 | Composite diffuser plates and direct-lit liquid crystal displays using same | Physics | 29 | Expired |
| US5417883A | Process for controlling layer spacing in mixtures of smectic liquid crystal compounds | Physics | 29 | Expired |
| US6447135B1 | Lightguide having a directly secured reflector and method of making the same | Physics | 28 | Expired |
| US7385659B2 | Structured transflectors for enhanced ambient and backlight operation of transmissive liquid crystal displays | Physics | 25 | Expired |
| US7997771B2 | LED array systems | Physics | 25 | Active |
| US7213958B2 | Phosphor based illumination system having light guide and an interference reflector | Physics | 24 | Expired |
| US7221847B2 | Optical elements having programmed optical structures | Emerging Cross-Sectional Technologies | 23 | Expired |
| US8246220B2 | LED array systems | Physics | 21 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.