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

Roger Chang — 3 Patents

IBM: 3 patents #26,335 of 70,183Top 40%
Irving, TX: #389 of 1,396 inventorsTop 30%
Texas: #41,402 of 125,132 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Roger Chang has been granted 3 US patents while listed as an inventor at IBM. The first was granted in 1995 and the most recent in November 2010. Roger Chang ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Roger Chang in Irving, TX, US.

Patents per Year

Patents granted per year, 1995 to 2010Bar chart with a peak of 1 patents in 1995.peak 11995: 1 patents19951998: 1 patents19982010: 1 patents2010

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7844892 Method and system for display of business intelligence data Nadia Shewchenko, Henning Hoffmann, Lesley Grignon 2010-11-30 $3,507,000
5727174 Graphical end-user interface for intelligent assistants Manuel Aparicio, IV 1998-03-10 $20,586,000
5428729 System and method for computer aided software engineering Andrew John Smith, Robert J. Torres 1995-06-27 $8,100,000