Keiichi Tanioka has been granted 10 US patents while listed as an inventor at Casio Computer Co.. The first was granted in 2002 and the most recent in November 2016. Keiichi Tanioka ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Keiichi Tanioka in Ome, JP.