Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
HC

Hung-Cheng Chang — 5 Patents

FLFlex: 1 patents #79 of 184Top 45%
WIWistron: 1 patents #959 of 2,107Top 50%
Taipei, TW: #4,043 of 24,966 inventorsTop 20%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Hung-Cheng Chang has been granted 5 US patents while listed as an inventor at Flex. The first was granted in 2002 and the most recent in September 2022. Hung-Cheng Chang ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Hung-Cheng Chang in Taipei, TW.

Patents per Year

Patents granted per year, 2002 to 2022Bar chart with a peak of 2 patents in 2022.peak 22002: 1 patents20022004: 1 patents20042013: 1 patents20132022: 2 patents2022

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
11443704 Backlight dimming method and control circuit for variable refresh rate display, and display apparatus using same Sung-Wei Chiang, Shih-Yu Hsieh 2022-09-13
11357097 High performance thermal solution concept for surface mount device packages Yung You Lin, Lien-Jin Chiang 2022-06-07
8585444 Power strip device 2013-11-19
6716346 Fluid magnetizer 2004-04-06
6377147 Liquid magnetizer 2002-04-23