Inventor · disambiguated record
Peter J. Douglas
Also filed as: DOUGLAS PETER J
5 granted patents·1 pending application·22 citations·filing 2012–2016
76Inventor score
Top patents by PatentIndex Score
6 records- 0188US9260118B2Railroad tank car manway assemblyUNION TANK CAR CO·Filed 2014·Granted Feb 16, 2016·8 cites·33 claims
- 0287US9499178B2Railroad tank car manway assemblyUNION TANK CAR CO·Filed 2016·Granted Nov 22, 2016·4 cites·19 claims
- 0376US8899161B2Railroad tank car manway assemblyDOUGLAS PETER J·Filed 2012·Granted Dec 2, 2014·6 cites·30 claims
- 0475US9746873B2Disengaging handle assembly for a bottom outlet valveUNION TANK CAR CO·Filed 2014·Granted Aug 29, 2017·4 cites·20 claims
- 0555US2017088149A1Railroad Tank Car Manway AssemblyUNION TANK CAR CO·Filed 2016·Application pending·0 cites
- 0629US9714719B2Bottom outlet valve removable independent steam jacketUNION TANK CAR CO·Filed 2015·Granted Jul 25, 2017·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →