Robert James Etsu Takeuchi has been granted 4 US patents while listed as an inventor at 0903608 B.C.. The first was granted in 2021 and the most recent in July 2025. Robert James Etsu Takeuchi ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Robert James Etsu Takeuchi in Vancouver, BC, CA.