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USPTO Patent Rankings Data through Dec 31, 2025
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Andy Chang — 15 Patents

VIVirtualagility: 3 patents #9 of 10Top 90%
TSMC: 1 patents #8,466 of 12,232Top 70%
TLTfi Digital Media Limited: 1 patents #12 of 21Top 60%
HTHong Kong University Of Science And Technology: 1 patents #320 of 964Top 35%
WIWistron: 1 patents #959 of 2,107Top 50%
Amazon: 1 patents #10,717 of 19,158Top 60%
HLHong Kong Applied Science And Technology Research Institute Company Limited: 1 patents #320 of 702Top 50%
Google: 1 patents #14,887 of 22,993Top 65%
San Jose, CA: #4,373 of 32,062 inventorsTop 15%
California: #40,789 of 386,348 inventorsTop 15%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
Andy Chang has been granted 15 US patents while listed as an inventor at Virtualagility. The first was granted in 1990 and the most recent in November 2022. Andy Chang ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Andy Chang in San Jose, CA, US.

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11500837 Automating optimizations for items in a hierarchical data store Ahmed Reaz, Michael Curtis James, Gavin Hill, Amol Narayan Godbole 2022-11-15 $192,729,000
11435896 Secured operation with optional cancellation on touch-sensitive devices Yiu Fai Yuen, Chi Keung Fong, Ka Hei Lai 2022-09-06
9864655 Methods and apparatus for mobile computing device security in testing facilities Pratyus Patnaik, Jordan Carlson, Jong Hyeop Kim, Frank Farzan, Emma E. Marsh 2018-01-09 $16,226,000
8966445 System for supporting collaborative activity Janet Ahlgren, Kevin Kelley, Gideon Moran, Gorham Palmer, Hung Phan +3 more 2015-02-24
8949080 Methods of designing integrated circuits and systems thereof Kuo-Tsai Li, Paul Chang 2015-02-03 $3,256,000
8850385 System for supporting collaborative activity Janet Ahlgren, Kevin Kelley, Gideon Moran, Gorham Palmer, Hung Phan +3 more 2014-09-30
8082301 System for supporting collaborative activity Janet Ahlgren, Stuart Rudolph, Kevin Kelley, Gideon Moran, Gorham Palmer +3 more 2011-12-20
7928327 Shielding device Lung-Fai Tuen 2011-04-19
7720148 Efficient multi-frame motion estimation for video compression Oscar Chi-Lim Au 2010-05-18
7657113 Auto-regressive method and filter for denoising images and videos Hon Wah Wong 2010-02-02
5389526 Plasmid vectors for cellular slime moulds of the genus dictyostelium Martin Slade, Keith Leslie Williams 1995-02-14
5105704 Adjustable saw blade fastener — 1992-04-21
5070752 Structure of driving mechanism for scroll sawing machine — 1991-12-10
5022157 Transmission mechanism for scroll sawing machine — 1991-06-11
4949616 Stepless transmission scroll sawing machine with saw blade fastening and micro-inch adjusting means and the related positioning device — 1990-08-21

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