Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DE

Del Kirk Engen

Microsoft: 2 patents #17,506 of 40,388Top 45%
Seattle, WA: #10,473 of 21,776 inventorsTop 50%
Washington: #35,300 of 76,902 inventorsTop 50%
Overall (All Time): #2,003,542 of 4,157,543Top 50%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9305289 Caching and exposing pre-send data relating to the sender or recipient of an electronic mail message Alessio Roic, Fumiaki Yagi, Graham D. Gibbons 2016-04-05
8280963 Caching and exposing pre-send data relating to the sender or recipient of an electronic mail message Alessio Roic, Fumiaki Yagi, Graham D. Gibbons 2012-10-02