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

Yi-Ching Chang — 18 Patents

UMUnited Microelectronics: 11 patents #537 of 4,560Top 15%
FCFujian Jinhua Integrated Circuit Co.: 10 patents #34 of 196Top 20%
SISchneider Electric It: 4 patents #64 of 414Top 20%
TSMC: 3 patents #5,465 of 12,232Top 45%
Taichung, TW: #398 of 7,415 inventorsTop 6%
Overall (All Time): #245,716 of 4,157,543Top 6%
18 Patents All Time
Yi-Ching Chang has been granted 18 US patents while listed as an inventor at United Microelectronics. The first was granted in 2014 and the most recent in October 2023. Yi-Ching Chang ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Yi-Ching Chang in Taichung, TW.

Patents per Year

Patents granted per year, 2014 to 2023Bar chart with a peak of 4 patents in 2019.peak 42014: 1 patents20142016: 2 patents20162018: 1 patents20182019: 4 patents20192020: 3 patents20202021: 3 patents20212022: 2 patents20222023: 2 patents2023

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11776587 Power ramping sequence control for a memory device Yangsyu Lin, Yu-Hao Hsu, Cheng Hung Lee 2023-10-03 $7,955,000
11545547 Method of forming semiconductor device Feng-Yi Chang, Fu-Che Lee, Kai-Lou Huang, Ying-Chih Lin, Gang-Yi Lin 2023-01-03 $1,059,000
D971153 Surge protector Chung-Hui Chen, Zeqian Li 2022-11-29
11244948 Semiconductor device and method of forming the same Feng-Yi Chang, Fu-Che Lee, Kai-Lou Huang 2022-02-08 $6,599,000
D938360 Surge protector Chung-Hui Chen, Zeqian Li 2021-12-14
D938361 Surge protector adaptor Chung-Hui Chen, Zeqian Li 2021-12-14
11038014 Semiconductor device having plug and metal line Feng-Yi Chang, Fu-Che Lee, Kai-Lou Huang, Ying-Chih Lin, Gang-Yi Lin 2021-06-15 $2,894,000
10734284 Method of self-aligned double patterning Feng-Yi Chang, Fu-Che Lee, Ying-Chih Lin, Gang-Yi Lin, Chieh-Te Chen 2020-08-04 $1,586,000
10700071 Method for forming semiconductor pattern Gang-Yi Lin, Shih-Fang Tzou, Fu-Che Lee, Feng-Yi Chang, Ying-Chih Lin +1 more 2020-06-30 $249,000
10593677 Semiconductor structure with capacitor landing pad and method of make the same Feng-Yi Chang, Fu-Che Lee, Chieh-Te Chen 2020-03-17 $384,000
10490555 Method of forming semiconductor memory device Feng-Yi Chang, Fu-Che Lee, Chieh-Te Chen 2019-11-26 $243,000
10418367 Method for fabricating air gap adjacent to two sides of bit line Feng-Yi Chang, Fu-Che Lee, Chieh-Te Chen 2019-09-17 $332,000
10366889 Method of forming semiconductor device Feng-Yi Chang, Fu-Che Lee, Chieh-Te Chen 2019-07-30 $211,000
10256312 Semiconductor structure with a gap between conductor features and fabrication method thereof Feng-Yi Chang, Fu-Che Lee, Chieh-Te Chen 2019-04-09 $243,000
10043809 Semiconductor device and method for fabricating the same Feng-Yi Chang, Fu-Che Lee, Chieh-Te Chen 2018-08-07 $203,000
9390816 Integrated circuit having voltage mismatch reduction Yu-Hao Hsu, Chia-En Huang, Hektor Huang, Chen-Lin Yang, Jung-Ping Yang +1 more 2016-07-12 $2,627,000
9240233 Integrated circuit having voltage mismatch reduction Yu-Hao Hsu, Chia-En Huang, Hektor Huang, Chen-Lin Yang, Jung-Ping Yang +1 more 2016-01-19 $6,010,000
8686593 Systems and methods of power device lighting Shen-Yuan Chien 2014-04-01