Inventor · disambiguated record
John David Sangster
Also filed as: SANGSTER JOHN DAVID
7 granted patents·17 citations·filing 2005–2018
74Inventor score
Top patents by PatentIndex Score
7 records- 0172US7779918B2Wellbore control deviceENOVATE SYSTEMS LTD·Filed 2005·Granted Aug 24, 2010·16 cites·9 claims
- 0258US10683721B2Test tree and actuatorINTERVENTEK SUBSEA ENGINEERING LTD·Filed 2015·Granted Jun 16, 2020·1 cites·16 claims
- 0353US11391304B2Rotary actuatorINTERVENTEK SUBSEA ENGINEERING LTD·Filed 2018·Granted Jul 19, 2022·0 cites·19 claims
- 0445US11047206B2ValveINTERVENTEK SUBSEA ENGINEERING LTD·Filed 2016·Granted Jun 29, 2021·0 cites·27 claims
- 0542US10801287B2Gate valveINTERVENTEK SUBSEA ENGINEERING LTD·Filed 2017·Granted Oct 13, 2020·0 cites·29 claims
- 0641US10267342B2Rotary actuatorINTERVENTEK SUBSEA ENGINEERING LTD·Filed 2015·Granted Apr 23, 2019·0 cites·26 claims
- 0740US10246969B2Valve apparatusINTERVENTEK SUBSEA ENGINEERING LTD·Filed 2015·Granted Apr 2, 2019·0 cites·29 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →