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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Chi Chen — 5 Patents in 2017

DEDelta Electronics: 4 patents #5 of 301Top 2%
Daxi District, TW: #8 of 406 inventorsTop 2%
Overall (2017): #32,765 of 506,227Top 7%
5 Patents 2017

Issued Patents 2017

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
9753276 Wavelength-converting device and illumination system using same Meng-Han Liu, Keh-Su Chang, Jau-Shiu Chen, Yen-I Chou 2017-09-05
9753277 Wavelength conversion device Keh-Su Chang, Yen-I Chou, Chun-Hsien Lu 2017-09-05
9726335 Phosphor device and manufacturing method thereof having a second phosphor agent to increase the luminous intensity of a converted color light Keh-Su Chang, Yen-I Chou 2017-08-08
9719635 Bulb-type lamp structure 2017-08-01
9696013 Illumination system multi-layered wavelength-converting device Keh-Su Chang, Jau-Shiu Chen, Yen-I Chou 2017-07-04