Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Yu-An Chang — 13 Patents

PEPhison Electronics: 3 patents #77 of 344Top 25%
EUEverlight Usa: 1 patents #46 of 103Top 45%
NINucleic Acid Research Institute: 1 patents #4 of 7Top 60%
RSRealtek Semiconductor: 1 patents #915 of 1,741Top 55%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
BIBaxter International: 1 patents #1,641 of 2,440Top 70%
Brooks Road, CA: #98 of 1,361 inventorsTop 8%
California: #47,433 of 386,348 inventorsTop 15%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Yu-An Chang has been granted 13 US patents while listed as an inventor at Phison Electronics. The first was granted in 1989 and the most recent in August 2021. Yu-An Chang ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Yu-An Chang in Brooks Road, CA, US.

Patents per Year

Patents granted per year, 1989 to 2021Bar chart with a peak of 3 patents in 2011.peak 31989: 1 patents19891993: 1 patents19931999: 1 patents19992002: 1 patents20022003: 1 patents20032005: 2 patents20052008: 2 patents20082011: 3 patents20112021: 1 patents2021

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11082200 Clock data recovery apparatus and method Chieh Chang, Chia-Jung Chang, Cheng-Yu Liu 2021-08-03
7987316 Programming device for non-volatile memory and programming method thereof Hsiang-Hsiung Yu 2011-07-26
7900118 Flash memory system and method for controlling the same Chee-Kong Awyong, Chin-Ling Wang 2011-03-01
7900012 Secure storage apparatus and method for controlling the same Chien-Chen Liou 2011-03-01
7470245 Extracorporeal pathogen reduction system Hosheng Tu, Hun-Chi Lin 2008-12-30
7314460 Extracorporeal pathogen reduction system Hosheng Tu, Hun-Chi Lin 2008-01-01
6969367 Extracorporeal pathogen reduction system Hosheng Tu, Hun-Chi Lin 2005-11-29
6960178 Apparatus for enhanced plasmapheresis and methods thereof Daniel H. Duff, Hosheng Tu 2005-11-01
6613507 Boraadamantane compounds for the treatment of pathogenic viruses and other medical applications 2003-09-02
6423023 Method and apparatus for enhanced plasmapheresis Daniel H. Duff, Hosheng Tu 2002-07-23
5977380 Process for preparing N-[1- (S)-ethoxycarbonyl-3- phenylpropyl]-L-alanine derivatives Suh-Wan Yang, Yu-Liang Liu 1999-11-02
5204451 Activating hydroxyl groups of polymeric carriers using 4-fluorobenzenesulfonyl chloride for binding biologically active ligands 1993-04-20 $23,658,000
4861873 8-Chloroadenosine 3', 5'-cyclic monophosphate preparations Roland K. Robins, Ganapathi R. Revankar 1989-08-29 $4,781,000