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

Mann Chang — 3 Patents

IBM: 2 patents #32,909 of 70,183Top 50%
Canon: 1 patents #14,969 of 19,416Top 80%
Irvine, CA: #2,493 of 6,241 inventorsTop 40%
California: #150,760 of 386,348 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Mann Chang has been granted 3 US patents while listed as an inventor at IBM. The first was granted in 1997 and the most recent in September 2012. Mann Chang ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Mann Chang in Irvine, CA, US.

Patents per Year

Patents granted per year, 1997 to 2012Bar chart with a peak of 1 patents in 1997.peak 11997: 1 patents19972009: 1 patents20092012: 1 patents2012

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8260815 System and method for accessing non-compatible content repositories Vladimir Fridman, Lauren A. Mayes, Scott P. Mills, Daniel S. Whelan 2012-09-04 $6,762,000
7483879 System and method for accessing non-compatible content repositories Vladimir Fridman, Lauren A. Mayes, Scott P. Mills, Daniel S. Whelan 2009-01-27 $4,993,000
5659767 Application programming interface for accessing document analysis functionality of a block selection program Thieu Quang Nguyen 1997-08-19 $61,000