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

Charles Keen — 3 Patents

Microsoft: 2 patents #17,644 of 40,388Top 45%
PTPowerwave Technologies: 1 patents #49 of 89Top 60%
Seattle, WA: #8,351 of 21,776 inventorsTop 40%
Washington: #28,186 of 76,902 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Charles Keen has been granted 3 US patents while listed as an inventor at Microsoft. The first was granted in 2000 and the most recent in March 2018. Charles Keen ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Charles Keen in Seattle, WA, US.

Patents per Year

Patents granted per year, 2000 to 2018Bar chart with a peak of 1 patents in 2000.peak 12000: 1 patents20002015: 1 patents20152018: 1 patents2018

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9910743 Method, system and device for validating repair files and repairing corrupt software Abhinav Mishra, Michael Day, Mingbiao Fei, Derek Rivait, Alan B. Back +1 more 2018-03-06 $61,110,000
9158605 Method, system and device for validating repair files and repairing corrupt software Abhinav Mishra, Michael Day, Mingbiao Fei, Derek Rivait, Alan B. Back +1 more 2015-10-13 $36,364,000
6081160 Method and apparatus for increasing the bandwidth, and reducing the size, of the DC feed network for wideband RF amplifiers using selective placement of high dielectric constant material James Keith Custer, William Veitschegger 2000-06-27 $65,658,000