Frédéric Berthet has been granted 5 US patents while listed as an inventor at Intertechnique. The first was granted in 1997 and the most recent in July 2022. Frédéric Berthet ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Frédéric Berthet in Saulx-Marchais, FR.