Richard A. Terwilliger has been granted 48 US patents while listed as an inventor at Ideamatrix. The first was granted in 1985 and the most recent in July 2012. Richard A. Terwilliger ranks #57,596 of 4,157,543 US inventors in our database (top 1.4%). Patent records list Richard A. Terwilliger in Los Gatos, CA, US.