Kees Langeveld has been granted 2 US patents while listed as an inventor at Baroid Technology. The first was granted in 1996 and the most recent in February 1998. Kees Langeveld ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Kees Langeveld in Rijswijk, NL.