Hy Si Bui has been granted 123 US patents while listed as an inventor at L'Oreal. The first was granted in 2004 and the most recent in October 2025. Hy Si Bui ranks #9,462 of 4,157,543 US inventors in our database (top 0.23%). Patent records list Hy Si Bui in Piscataway, NJ, US.