Gregg A. Herrin has been granted 5 US patents while listed as an inventor at Bentley Systems, Incorporated. The first was granted in 2006 and the most recent in September 2009. Gregg A. Herrin ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Gregg A. Herrin in Burlington, CT, US.