Inventor · disambiguated record
Andrew Browne Helvenston
Also filed as: HELVENSTON ANDREW · HELVENSTON ANDREW BROWNE
12 granted patents·31 citations·filing 2013–2024
87Inventor score
Top patents by PatentIndex Score
12 records- 0191US10036485B2Dual seal fire safe stem packing orientationGE OIL & GAS PRESSURE CONTROL LP·Filed 2016·Granted Jul 31, 2018·7 cites·20 claims
- 0281US10107413B2Self-contained gate valve column loading prevention mechanismGE OIL & GAS PRESSURE CONTROL LP·Filed 2016·Granted Oct 23, 2018·3 cites·14 claims
- 0380US12054997B2Rotatable mandrel hangerVAULT PRESSURE CONTROL LLC·Filed 2021·Granted Aug 6, 2024·2 cites·19 claims
- 0479US10253589B2Offset adjustment rings for wellhead orientationGE OIL & GAS PRESSURE CONTROL LP·Filed 2016·Granted Apr 9, 2019·4 cites·20 claims
- 0576US9347585B2Dual seal fire safe stem packing orientationGE OIL & GAS PRESSURE CONTROL LP·Filed 2013·Granted May 24, 2016·5 cites·22 claims
- 0674US9458699B2Slotted wellhead and multibowl polishing tool with woven polishing beltGE OIL & GAS PRESSURE CONTROL LP·Filed 2013·Granted Oct 4, 2016·2 cites·20 claims
- 0772US9695663B2Combination fluid pumping sub and hanger lockdown toolGE OIL & GAS PRESSURE CONTROL LP·Filed 2014·Granted Jul 4, 2017·4 cites·20 claims
- 0863US9476526B2Dual seal fluid fittingGE OIL & GAS PRESSURE CONTROL LP·Filed 2014·Granted Oct 25, 2016·3 cites·11 claims
- 0962US10767435B2Slip hanger assemblyGE OIL & GAS PRESSURE CONTROL LP·Filed 2018·Granted Sep 8, 2020·1 cites·20 claims
- 1058US12359523B2Wellhead attachment systemVAULT PRESSURE CONTROL LLC·Filed 2024·Granted Jul 15, 2025·0 cites·20 claims
- 1139US10584549B2Coiled tubing split-type running and retrievable clamp toolGE OIL & GAS PRESSURE CONTROL LP·Filed 2016·Granted Mar 10, 2020·0 cites·26 claims
- 1239US9617820B2Flexible emergency hanger and method of installationGE OIL & GAS PRESSURE CONTROL LP·Filed 2015·Granted Apr 11, 2017·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →