Daisuke Maruoka has been granted 3 US patents while listed as an inventor at Sumco. The first was granted in 2014 and the most recent in October 2024. Daisuke Maruoka ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Daisuke Maruoka in Nagasaki, JP.