Darryl E. Havens has been granted 8 US patents while listed as an inventor at Microsoft. The first was granted in 1998 and the most recent in October 2021. Darryl E. Havens ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Darryl E. Havens in Seattle, WA, US.