Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Sun-Il Chang — 65 Patents

Apple: 35 patents #857 of 18,612Top 5%
Google: 26 patents #683 of 22,993Top 3%
University of Michigan: 3 patents #689 of 4,352Top 20%
KTKorea Institute Of Science And Technology: 1 patents #1,479 of 3,491Top 45%
UMUniversity of Minnesota: 1 patents #1,216 of 2,951Top 45%
San Jose, CA: #625 of 32,062 inventorsTop 2%
California: #5,108 of 386,348 inventorsTop 2%
Overall (All Time): #33,516 of 4,157,543Top 1%
65 Patents All Time
Sun-Il Chang has been granted 65 US patents while listed as an inventor at Apple. The first was granted in 2010 and the most recent in December 2025. Sun-Il Chang ranks #33,516 of 4,157,543 US inventors in our database (top 0.81%). Patent records list Sun-Il Chang in San Jose, CA, US.

Patents per Year

Patents granted per year, 2010 to 2025Bar chart with a peak of 13 patents in 2021.peak 132010: 1 patents20102014: 2 patents20142018: 1 patents20182019: 5 patents20192020: 11 patents20202021: 13 patents20212022: 8 patents20222023: 5 patents20232024: 11 patents20242025: 8 patents2025

Issued Patents All Time

Showing 1–25 of 65 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12512030 Power saving in OLED displays with multiple refresh rates Sangwook Choi, Sang Y. Youn, Choong Kang 2025-12-30
12505776 Dual color management for a multi-pixel density display Hyunchul Kim, Woon-Taek Choi 2025-12-23
12437727 Variable refresh rate control using PWM-aligned frame periods Sang Y. Youn, Woon-Taek Choi, Sangwook Choi 2025-10-07
12364131 Display panel structure with uni-color data lines Sangmoo Choi 2025-07-15
12333995 Feedforward compensation of high-luminance banding Mura compensation Hyunwoo Nho, Jie Won Ryu, Patrick R Cruce, Yao Shi, Nicolas Le Dortz +7 more 2025-06-17
12223876 Power saving in OLED displays with multiple refresh rates Sangmoo Choi, Sang Y. Youn, Chang Ju Kang 2025-02-11
12217698 Odd and even row sequential driving in AMOLED with pentile arrangement Sangmoo Choi 2025-02-04
12211435 Display panel transistor gate-signal compensation systems and methods Kwang Soon Park, Hao-Lin Chiu, Jie Won Ryu, Hyunsoo Kim, Hyunwoo Nho +2 more 2025-01-28
12148367 Burn-in compensation for display Hyunchul Kim, Wonjae Choi 2024-11-19 $89,094,000
12051353 Dual color management for a multi-pixel density display Hyunchul Kim, Wonjae Choi 2024-07-30 $89,515,000
12039954 Gamma lookup table compression based on dimensionality reduction Hyunchul Kim, Wonjae Choi 2024-07-16 $98,172,000
12039133 Correcting touch inputs Young Seok Oh 2024-07-16 $98,172,000
12020411 Remapping for mixed dynamic range content Hyunchul Kim, Wonjae Choi, Sang Y. Youn 2024-06-25 $162,704,000
11994920 Reducing hole bezel region in displays Sangmoo Choi 2024-05-28 $129,455,000
11978378 Pixel arrangement for multi-resolution display panel David Morris Hoffman, Sangmoo Choi, Ion Bita 2024-05-07 $112,500,000
11955076 Dynamic power converter switching for displays based on predicted power usage Ji Hoon Lee, Sang Y. Youn 2024-04-09 $129,498,000
11948520 Variable refresh rate control using PWM-aligned frame periods Sang Y. Youn, Wonjae Choi, Sangmoo Choi 2024-04-02 $80,757,000
11929018 Display PWM duty cycle compensation for delayed rendering Sang Y. Youn, Wonjae Choi, Hyunchul Kim 2024-03-12 $112,328,000
11893933 Display burn-in compensation Hyunchul Kim 2024-02-06 $88,011,000
11842674 Display with discrete gate-in-panel circuitry Sangmoo Choi 2023-12-12 $79,228,000
11783752 Gamma lookup table compression Hyunchul Kim, Wonjae Choi, Sang Y. Youn 2023-10-10 $80,003,000
11770962 Display configuration for mobile computing devices Sangmoo Choi, Jyothi Karri, Ion Bita 2023-09-26 $154,792,000
11687126 Reducing hole bezel region in displays Sangmoo Choi 2023-06-27 $76,505,000
11663973 External compensation for displays using sensing and emission differences Junhua Tan, Shengkui Gao, Myungjoon Choi, Injae Hwang, Chaohao Wang +7 more 2023-05-30 $227,111,000
11488529 Display compensation using current sensing across a diode without user detection Injae Hwang, Jesun Kim, Hyunwoo Nho, Jie Won Ryu, Hyunsoo Kim +11 more 2022-11-01 $163,971,000