Serge Hethuin has been granted 18 US patents while listed as an inventor at U.S. Philips. The first was granted in 1986 and the most recent in April 2014. Serge Hethuin ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Serge Hethuin in Meudon, FR.