Lien Bui-Bertrand has been granted 8 US patents while listed as an inventor at L'Oreal. The first was granted in 1997 and the most recent in June 2004. Lien Bui-Bertrand ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Lien Bui-Bertrand in Savigny-sur-Orge, FR.