Keisuke Numata has been granted 2 US patents while listed as an inventor at Ito En. The first was granted in 2014 and the most recent in June 2017. Keisuke Numata ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Keisuke Numata in Makinohara, JP.