Alastair Henry Walter Macfarlane

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Angus, GB

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Patents Grantslast 30 patents

Information Patent Grant
Downhole devices and associated apparatus and methods
- Patent number 11,499,374
- Issue date Nov 15, 2022
- NOV Downhole Eurasia Limited
- Alastair Henry Walter Macfarlane
- E21 - EARTH DRILLING MINING
Information Patent Grant
Selective downhole actuator
- Patent number 10,830,011
- Issue date Nov 10, 2020
- NOV Downhole Eurasia Limited
- Alan MacKenzie
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole drilling assembly with motor powered hammer and method of...
- Patent number 10,000,970
- Issue date Jun 19, 2018
- National-Oilwell DHT, L.P.
- Rory McCrae Tulloch
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling method
- Patent number 8,550,183
- Issue date Oct 8, 2013
- National-Oilwell Varco, L.P.
- Ian Forster
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Downhole Devices and Associated Apparatus and Methods
- Publication number 20210087888
- Publication date Mar 25, 2021
- NOV DOWNHOLE EURASIA LIMITED
- Alastair Henry Walter Macfarlane
- E21 - EARTH DRILLING MINING
Information Patent Application
SELECTIVE DOWNHOLE ACTUATOR
- Publication number 20180238131
- Publication date Aug 23, 2018
- NOV Downhole Eurasia Limited
- Alan MACKENZIE
- E21 - EARTH DRILLING MINING
Information Patent Application
DOWNHOLE DRILLING ASSEMBLY WITH MOTOR POWERED HAMMER AND METHOD OF...
- Publication number 20150315846
- Publication date Nov 5, 2015
- NATIONAL OILWELL DHT, L.P.
- Rory McCrae Tulloch
- E21 - EARTH DRILLING MINING
Information Patent Application
Drilling Method
- Publication number 20100089647
- Publication date Apr 15, 2010
- National Oilwell Varco, L.P.
- Ian Forster
- E21 - EARTH DRILLING MINING
Information Patent Application
Flow Diverter
- Publication number 20080029268
- Publication date Feb 7, 2008
- Alastair Henry Walter Macfarlane
- E21 - EARTH DRILLING MINING