Ledtech Electronics Corp.
17Patents
11Active
17Granted
45Portfolio score
Filing activity: Sep 20, 2005 → Oct 18, 2011 · 10 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7556396B2 | Lamp assembly | Mechanical Engineering; Lighting; Heating | 92 | Active |
| US7887226B2 | LED lamp tube | Emerging Cross-Sectional Technologies | 73 | Active |
| US7600907B2 | LED lighting device | Mechanical Engineering; Lighting; Heating | 69 | Active |
| US7441922B2 | LED lamp tube | Emerging Cross-Sectional Technologies | 43 | Expired |
| USD578248S1 | LED lamp | General | 36 | Expired |
| US7926985B2 | Custom assembly light-emitting module | Mechanical Engineering; Lighting; Heating | 30 | Active |
| USD583496S1 | Lamp | General | 14 | Expired |
| US7699490B2 | Light-emitting structure for generating an annular illumination effect | Mechanical Engineering; Lighting; Heating | 13 | Active |
| USD662629S1 | Waterproof LED lamp tube | General | 10 | Active |
| US7682039B2 | Extensible light shade | Electricity | 7 | Active |
| US7344290B2 | Lamp module | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| USD567968S1 | LED lamp bar | General | 5 | Expired |
| US8388171B2 | Waterproof LED lamp tube and casing of same | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US7806557B2 | Lighting unit, receptacle unit, and assembly thereof | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US7655954B2 | Array type light-emitting device with high color rendering index | Electricity | 2 | Active |
| USD554277S1 | LED lamp | General | 1 | Expired |
| US7772603B2 | Array type light-emitting device with high color rendering index | Mechanical Engineering; Lighting; Heating | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.