Daisuke Matsubara has been granted 48 US patents while listed as an inventor at Hitachi. The first was granted in 2003 and the most recent in April 2022. Daisuke Matsubara ranks #57,596 of 4,157,543 US inventors in our database (top 1.4%). Patent records list Daisuke Matsubara in Tachikawa, CA, JP.