Epistar Corporation
1,220Patents
1,153Active
1,220Granted
64Portfolio score
Filing activity: Apr 18, 1997 → May 20, 2024 · 214 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9691668B2 | Wafer carrier | Electricity | 345 | Active |
| US7246931B2 | LED light source | Mechanical Engineering; Lighting; Heating | 160 | Expired |
| US6078064A | Indium gallium nitride light emitting diode | Electricity | 153 | Expired |
| US6169294A | Inverted light emitting diode | Electricity | 150 | Expired |
| US5789768A | Light emitting diode having transparent conductive oxide formed on the contact layer | Electricity | 142 | Expired |
| US7335522B2 | Package structure for light emitting diode and method thereof | Electricity | 66 | Expired |
| US7341358B2 | Illumination apparatus | Emerging Cross-Sectional Technologies | 65 | Expired |
| US6057562A | High efficiency light emitting diode with distributed Bragg reflector | Electricity | 54 | Expired |
| US7326967B2 | Light emitting diode having an omnidirectional reflector including a transparent conductive layer | Electricity | 54 | Expired |
| US7560738B2 | Light-emitting diode array having an adhesive layer | Electricity | 52 | Expired |
| US7015513B2 | Organic adhesive light-emitting device with a vertical structure | Electricity | 49 | Expired |
| US7030423B2 | Package structure for light emitting diode and method thereof | Electricity | 49 | Expired |
| USD674759S1 | Wafer carrier | General | 45 | Active |
| US7294866B2 | Flip-chip light-emitting device with micro-reflector | Electricity | 43 | Expired |
| US7385226B2 | Light-emitting device | Electricity | 41 | Expired |
| USD687396S1 | Light-emitting diode array | General | 40 | Active |
| US7724321B2 | Liquid crystal display | Electricity | 39 | Active |
| USD644188S1 | Light emitting diode array | General | 39 | Expired |
| US7168841B2 | Backlight module having independent light source | Physics | 39 | Expired |
| US7355210B2 | High-efficiency light-emitting element | Electricity | 38 | Expired |
| US7142769B2 | Illumination package | Emerging Cross-Sectional Technologies | 38 | Expired |
| USD751246S1 | Lens for lighting module | General | 35 | Active |
| USD648287S1 | Light-emitting diode | General | 34 | Expired |
| USD704155S1 | Wafer carrier | General | 34 | Active |
| US5917201A | Light emitting diode with asymmetrical energy band structure | Electricity | 33 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.