Patent assignee · TW · COMPANY

Huga Optotech Inc.

53Patents
53Active
53Granted
53Portfolio score

Filing activity: Aug 8, 2006 → Oct 19, 2016 · 35 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US7804104B2 Light-emitting diode with high lighting efficiency Electricity 11 Active
US8232567B2 Light emitting device with pillar structure having hollow structure Electricity 10 Active
US8378373B2 Light-emitting device Electricity 9 Active
US9231171B2 Flexible LED assemblies and LED light bulbs Electricity 9 Active
US7408204B2 Flip-chip packaging structure for light emitting diode and method thereof Emerging Cross-Sectional Technologies 8 Active
US8044422B2 Semiconductor light emitting devices with a substrate having a plurality of bumps Electricity 7 Active
US8247822B2 Semiconductor light-emitting device Electricity 7 Active
US9157579B2 LED assembly with omnidirectional light field Electricity 6 Active
US7659557B2 Semiconductor light-emitting device and method of fabricating the same Electricity 5 Active
US7498607B2 Epi-structure with uneven multi-quantum well and the method thereof Electricity 5 Active
US9502622B2 LED assembly Electricity 5 Active
US7569420B2 Flip-chip packaging method for light emitting diode with eutectic layer not overlapping insulating layer Emerging Cross-Sectional Technologies 5 Active
US7947991B2 High efficiency lighting device Electricity 3 Active
US9115875B2 LED light lamps using stack effect for improving heat dissipation Mechanical Engineering; Lighting; Heating 3 Active
US8659045B2 Light emitting device and methods for forming the same Electricity 3 Active
US8987761B2 Light-emitting device Electricity 2 Active
US8237184B2 Light-emitting semiconductor device Electricity 2 Active
US9263530B2 Field effect transistor Electricity 2 Active
US9331154B2 High electron mobility transistor Electricity 2 Active
US8247837B2 Light-emitting diode with high lighting efficiency Electricity 2 Active
US7960749B2 Light-emitting device structure and semiconductor wafer structure with the same Electricity 2 Active
US9546762B2 LED assembly Electricity 1 Active
US8143081B2 Method for dicing a diced optoelectronic semiconductor wafer Emerging Cross-Sectional Technologies 1 Active
US9024351B2 Semiconductor light-emitting structure Electricity 1 Active
US7768027B2 Semiconductor light-emitting device Electricity 1 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.