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USPTO Patent Rankings Data through Dec 31, 2025
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Ching-Chih Chang — 17 Patents

UMUnited Microelectronics: 8 patents #720 of 4,560Top 20%
LLLite-On Electronics (Guangzhou) Limited: 3 patents #87 of 534Top 20%
LTLite-On Technology: 3 patents #216 of 1,203Top 20%
AIAcer Incorporated: 2 patents #366 of 935Top 40%
CECompal Electronics: 1 patents #443 of 873Top 55%
Tainan, TW: #373 of 4,566 inventorsTop 9%
Overall (All Time): #263,971 of 4,157,543Top 7%
17 Patents All Time
Ching-Chih Chang has been granted 17 US patents while listed as an inventor at United Microelectronics. The first was granted in 2001 and the most recent in June 2025. Ching-Chih Chang ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Ching-Chih Chang in Tainan, TW.

Patents per Year

Patents granted per year, 2001 to 2025Bar chart with a peak of 3 patents in 2022.peak 32001: 1 patents20012003: 1 patents20032012: 1 patents20122013: 1 patents20132016: 2 patents20162021: 2 patents20212022: 3 patents20222023: 2 patents20232024: 3 patents20242025: 1 patents2025

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12334436 Metal interconnect structure having serpent metal line Shih-Che Huang, Yuan-Fu Ko, Chih-Sheng Chang 2025-06-17
12057346 Semiconductor device including metal interconnections having sidewall spacers thereon, and method for fabricating the same Yuan-Fu Ko, Chih-Sheng Chang 2024-08-06 $705,000
12007435 Method of copper hillock detecting Yi-Hsiu Chen, Yuan-Fu Ko, Chih-Sheng Chang 2024-06-11 $851,000
11892028 Fastening assembly and board-to-board assembled structure Pei-Hsuan Huang 2024-02-06
11815118 Fixing device Pei-Hsuan Huang 2023-11-14
11791203 Semiconductor device including metal interconnections having sidewall spacers thereon, and method for fabricating the same Yuan-Fu Ko, Chih-Sheng Chang 2023-10-17 $1,069,000
11515159 Forming contact holes using litho-etch-litho-etch approach Yuan-Fu Ko, Chih-Sheng Chang 2022-11-29 $1,695,000
11456207 Semiconductor device including metal interconnections having sidewall spacers thereon, and method for fabricating the same Yuan-Fu Ko, Chih-Sheng Chang 2022-09-27 $1,525,000
11404425 Test key structure Fang-Sheng Chou 2022-08-02 $1,988,000
10916427 Forming contact holes using litho-etch-litho-etch approach Yuan-Fu Ko, Chih-Sheng Chang 2021-02-09 $2,399,000
10900264 Hinge structure and casing using the same Chin-Yueh Liu 2021-01-26
D756406 Display screen with transitional icon Yen-Hao Chen, Zheng-Yan Lee, Shu-Han Wang, Pin-Hsun Huang 2016-05-17
D754147 Display screen with transitional icon Yen-Hao Chen, Zheng-Yan Lee, Shu-Han Wang, Pin-Hsun Huang 2016-04-19
8547056 One-piece car charger — 2013-10-01
8195245 Method and user interface apparatus for managing functions of wireless communication components Bo Wang, Yi-Hsi Wu, Yu-Ting Hsu, Hong-Tien Wang 2012-06-05
6513773 Structure wall-mounted articles hanger Ching-yi Chang 2003-02-04
6250481 Bathroom rack Ching-yi Chang 2001-06-26

Frequent Collaborators

Chih-Sheng Chang7 shared
Yuan-Fu Ko7 shared
Pin-Hsun Huang2 shared
Shu-Han Wang2 shared
Zheng-Yan Lee2 shared
Ching-yi Chang2 shared

Nearby-Ranked Inventors

Michael John Caelwaerts17
Umut Zalluhoglu17
Austino Longo17
Till Bredbeck17
Mircea Grigore17
Achim Klein17
Manesh Nadupparambil Sekharan17
Yoshiaki Nishikawa17
Evan Sparks17