Tapio Viljava has been granted 9 US patents while listed as an inventor at Cultor Oy. The first was granted in 1998 and the most recent in September 2022. Tapio Viljava ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Tapio Viljava in Kantvik, CA, FI.