Robertus Martinus Van Opdorp has been granted 4 US patents while listed as an inventor at Unknown. The first was granted in 2016 and the most recent in October 2024. Robertus Martinus Van Opdorp ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Robertus Martinus Van Opdorp in Amsterdam, NL.