Inventor · disambiguated record
Alastair Henry Walter Macfarlane
Also filed as: MACFARLANE ALASTAIR · MACFARLANE ALASTAIR HENRY WALTER
5 granted patents·17 citations·filing 2005–2018
73Inventor score
Technology areasE21B
Top patents by PatentIndex Score
5 records- 0168US10000970B2Downhole drilling assembly with motor powered hammer and method of using sameNAT OILWELL DHT LP·Filed 2013·Granted Jun 19, 2018·3 cites·30 claims
- 0259US8550183B2Drilling methodFORSTER IAN·Filed 2009·Granted Oct 8, 2013·7 cites·54 claims
- 0356US10830011B2Selective downhole actuatorNOV DOWNHOLE EURASIA LTD·Filed 2016·Granted Nov 10, 2020·1 cites·24 claims
- 0450US8251144B2Flow diverterMACFARLANE ALASTAIR HENRY WALTER·Filed 2005·Granted Aug 28, 2012·6 cites·46 claims
- 0539US11499374B2Downhole devices and associated apparatus and methodsNOV DOWNHOLE EURASIA LTD·Filed 2018·Granted Nov 15, 2022·0 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →