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

Yu-Lan Chang — 13 Patents

UMUnited Microelectronics: 13 patents #463 of 4,560Top 15%
New Taipei, TW: #1,068 of 10,472 inventorsTop 15%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Yu-Lan Chang has been granted 13 US patents while listed as an inventor at United Microelectronics. The first was granted in 2007 and the most recent in February 2011. Yu-Lan Chang ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Yu-Lan Chang in New Taipei, TW.

Patents per Year

Patents granted per year, 2007 to 2011Bar chart with a peak of 4 patents in 2009.peak 42007: 2 patents20072008: 3 patents20082009: 4 patents20092010: 2 patents20102011: 2 patents2011

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7892935 Semiconductor process Yi-Wei Chen, Chao-Ching Hsieh, Tsai-Fu Hsiao, Tsung-Yu Hung, Chun-Chieh Chang 2011-02-22 $2,812,000
7884028 Method of removing material layer and remnant metal Yi-Wei Chen, Chun-Chieh Chang, Tzung-Yu Hung, Chao-Ching Hsieh 2011-02-08 $1,968,000
7785972 Method for fabricating semiconductor MOS device Chao-Ching Hsieh, Yi-Wei Chen, Tzung-Yu Hung, Chun-Chieh Chang 2010-08-31 $1,670,000
7649263 Semiconductor device Chao-Ching Hsieh, Yi-Yiing Chiang, Yi-Wei Chen, Tzung-Yu Hung 2010-01-19 $2,673,000
7595234 Fabricating method for a metal oxide semiconductor transistor Po-Chao Tsao, Chang-Chi Huang, Ming-Tsung Chen, Yi-Yiing Chiang, Chung-Ju Lee +2 more 2009-09-29 $5,677,000
7595264 Fabrication method of semiconductor device Chao-Ching Hsieh, Yi-Yiing Chiang, Yi-Wei Chen, Tzung-Yu Hung 2009-09-29 $5,677,000
7572722 Method of fabricating nickel silicide Yi-Wei Chen, Chao-Ching Hsieh, Yi-Yiing Chiang, Tzung-Yu Hung, Po-Chao Tsao +2 more 2009-08-11 $15,875,000
7553762 Method for forming metal silicide layer Tzung-Yu Hung, Chun-Chieh Chang, Chao-Ching Hsieh, Yi-Wei Chen 2009-06-30 $3,125,000
7390754 Method of forming a silicide Chun-Chieh Chang, Tzung-Yu Hung, Chao-Ching Hsieh, Yi-Wei Chen 2008-06-24 $1,609,000
7385294 Semiconductor device having nickel silicide and method of fabricating nickel silicide Yi-Wei Chen, Chao-Ching Hsieh, Yi-Yiing Chiang, Tzung-Yu Hung, Po-Chao Tsao +2 more 2008-06-10 $1,091,000
7344978 Fabrication method of semiconductor device Chao-Ching Hsieh, Yi-Yiing Chiang, Yi-Wei Chen, Tzung-Yu Hung 2008-03-18 $1,548,000
7229920 Method of fabricating metal silicide layer Yi-Wei Chen, Tzung-Yu Hung, Yi-Yiing Chiang, Chao-Ching Hsieh 2007-06-12 $2,412,000
7214988 Metal oxide semiconductor transistor Po-Chao Tsao, Chang-Chi Huang, Ming-Tsung Chen, Yi-Yiing Chiang, Chung-Ju Lee +2 more 2007-05-08 $1,078,000