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

Tsun-Kai Ko — 119 Patents

EPEpistar: 118 patents #4 of 732Top 1%
Hsinchu, TW: #100 of 13,380 inventorsTop 1%
Overall (All Time): #10,137 of 4,157,543Top 1%
119 Patents All Time
Tsun-Kai Ko has been granted 119 US patents while listed as an inventor at Epistar. The first was granted in 2011 and the most recent in February 2025. Tsun-Kai Ko ranks #10,137 of 4,157,543 US inventors in our database (top 0.24%). Patent records list Tsun-Kai Ko in Hsinchu, TW.

Patents per Year

Patents granted per year, 2011 to 2025Bar chart with a peak of 26 patents in 2016.peak 262011: 4 patents20112012: 1 patents2013: 16 patents20132014: 7 patents2015: 17 patents20152016: 26 patents2017: 12 patents20172018: 11 patents2019: 7 patents20192020: 4 patents2021: 4 patents20212023: 5 patents2024: 4 patents20242025: 1 patents2025

Issued Patents All Time

Showing 1–25 of 119 patents

Patent #TitleCo-InventorsDate
12218279 Optoelectronic device and method for manufacturing the same Chao-Hsing Chen, Jia-Kuen Wang, Chien-Chih Liao, Tzu-Yao Tseng, Chien-Fu Shen 2025-02-04
12176465 Light-emitting device Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Bo-Jiun Hu, Tsung-Hsun Chiang +4 more 2024-12-24
12155019 Light-emitting device Hsin-Ying Wang, Chih-Hao Chen, Chien-Chih Liao, Chao-Hsing Chen, Wu-Tsung Lo +1 more 2024-11-26
11990575 Light-emitting device Hsin-Ying Wang, Chih-Hao Chen, Chien-Chih Liao, Chao-Hsing Chen, Wu-Tsung Lo +1 more 2024-05-21
11908975 Optoelectronic device and method for manufacturing the same Chao-Hsing Chen, Jia-Kuen Wang, Chien-Chih Liao, Tzu-Yao Tseng, Chien-Fu Shen 2024-02-20
11757077 Light-emitting device Hsin-Ying Wang, Chih-Hao Chen, Chien-Chih Liao, Chao-Hsing Chen, Wu-Tsung Lo +1 more 2023-09-12
11705545 Light-emitting device Hsin-Ying Wang, Chih-Hao Chen, Chien-Chih Liao, Chao-Hsing Chen, Wu-Tsung Lo +1 more 2023-07-18
11699776 Light-emitting element having conductive contact layer Schang-Jing Hon, Chao-Hsing Chen, Chien-Fu Shen, Jia-Kuen Wang, Hung-Che Chen 2023-07-11
11658269 Light-emitting device Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Bo-Jiun Hu, Tsung-Hsun Chiang +4 more 2023-05-23
11594573 Light-emitting structure having a plurality of light-emitting structure units Chien-Fu Shen, Chao-Hsing Chen, Schang-Jing Hon, Sheng-Jie Hsu, De-Shan Kuo +5 more 2023-02-28
11011679 Optoelectronic device and method for manufacturing the same Chao-Hsing Chen, Jia-Kuen Wang, Chien-Chih Liao, Tzu-Yao Tseng, Chien-Fu Shen 2021-05-18
10985295 Light-emitting device Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Bo-Jiun Hu, Tsung-Hsun Chiang +4 more 2021-04-20
10964847 Light-emitting element Schang-Jing Hon, Chao-Hsing Chen, Chien-Fu Shen, Jia-Kuen Wang, Hung-Che Chen 2021-03-30
10950652 Light-emitting structure having a plurality of light-emitting structure units Chien-Fu Shen, Chao-Hsing Chen, Schang-Jing Hon, Sheng-Jie Hsu, De-Shan Kuo +5 more 2021-03-16
10680138 Light-emitting device Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Bo-Jiun Hu, Tsung-Hsun Chiang +4 more 2020-06-09
10546824 Light-emitting device Chao-Hsing Chen, Chien-Fu Shen, Schang-Jing Hon, Hsin-Mao Liu 2020-01-28
10529893 Optoelectronic device and method for manufacturing the same Chao-Hsing Chen, Jia-Kuen Wang, Chien-Chih Liao, Tzu-Yao Tseng, Chien-Fu Shen 2020-01-07
10529895 Optoelectronic semiconductor device Schang-Jing Hon, Chien-Kai Chung, Hui-Chun Yeh, An-Ju Lin, Chien-Fu Shen +1 more 2020-01-07
10490598 Light-emitting structure having a plurality of light-emitting structure units Jhih-Yong Yang, Hui-Chun Yeh, Chien-Fu Shen 2019-11-26
10396243 Light-emitting device Chien-Kai Chung, Po-Shun Chiu, Hsin-Ying Wang, De-Shan Kuo, Yu-Ting Huang 2019-08-27
10374130 Light-emitting element with electrode structure Schang-Jing Hon, Chao-Hsing Chen, Chien-Fu Shen, Jia-Kuen Wang, Hung-Che Chen 2019-08-06
10340431 Light-emitting device with metal bump Jai-Tai Kuo, Min-Hsun Hsieh, Lung-Kuan Lai, Wei-Kang Cheng, Chien-Liang Liu +3 more 2019-07-02
10297723 Light emitting device Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Bo-Jiun Hu, Tsung-Hsun Chiang +4 more 2019-05-21
D844575 Light-emitting diode array Hui-Chun Yeh, Jhih-Yong Yang, Chien-Fu Shen 2019-04-02
10199544 Light emitting device Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Bo-Jiun Hu, Tsung-Hsun Chiang +4 more 2019-02-05