Maud Willien has been granted 2 US patents while listed as an inventor at L'Oreal. The first was granted in 2018 and the most recent in January 2023. Maud Willien ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Maud Willien in Vitry-sur-Seine, FR.