Richard C. E. Durrant has been granted 7 US patents while listed as an inventor at Stc Plc. The first was granted in 1987 and the most recent in August 2017. Richard C. E. Durrant ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Richard C. E. Durrant in Crystal Lake, IL, US.