Individual holder
HENGEN DEREK J
CA·4 granted patents·7 citations·filing 2015–2019
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0186US11033939B2Method and apparatus for removing sludge deposits from oil storage tanksHENGEN DEREK J·Filed 2019·Granted Jun 15, 2021·5 cites·14 claims
- 0277US10569314B2Method and apparatus for removing sludge deposits from oil storage tanksHENGEN DEREK J·Filed 2016·Granted Feb 25, 2020·2 cites·22 claims
- 0358US10900861B2Pipeline element leak detection system and methodHENGEN DEREK J·Filed 2019·Granted Jan 26, 2021·0 cites·10 claims
- 0449US10260986B2Pipeline element leak detection system and methodHENGEN DEREK J·Filed 2015·Granted Apr 16, 2019·0 cites·10 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →