Richard JOHNSTON

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Broxburn, GB

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method relating to managed pressure drilling
- Patent number 12,044,093
- Issue date Jul 23, 2024
- Oil States Industries (UK) Limited
- Miguel Fernandes Martins
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method relating to managed pressure drilling
- Patent number 11,828,111
- Issue date Nov 28, 2023
- Oil States Industries (UK) Limited
- David Symonds
- E21 - EARTH DRILLING MINING
Information Patent Grant
Connection system for a marine drilling riser
- Patent number 11,708,727
- Issue date Jul 25, 2023
- Oil States Industries (UK) Limited
- Garry Stephen
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS AND METHOD RELATING TO MANAGED PRESSURE DRILLING (MPD) WH...
- Publication number 20220381105
- Publication date Dec 1, 2022
- Oil States Industries (UK) Limited
- Kevin Wilson
- E21 - EARTH DRILLING MINING
Information Patent Application
APPARATUS AND METHOD RELATING TO MANAGED PRESSURE DRILLING
- Publication number 20220205335
- Publication date Jun 30, 2022
- Oil States Industries (UK) Limited
- Miguel Fernandes Martins
- E21 - EARTH DRILLING MINING
Information Patent Application
CONNECTION SYSTEM FOR A MARINE DRILLING RISER
- Publication number 20220098935
- Publication date Mar 31, 2022
- Oil States Industries (UK) Limited
- Garry Stephen
- E21 - EARTH DRILLING MINING
Information Patent Application
APPARATUS AND METHOD RELATING TO MANAGED PRESSURE DRILLING
- Publication number 20210348450
- Publication date Nov 11, 2021
- Oil States Industries (UK) Limited
- David Symonds
- E21 - EARTH DRILLING MINING
Information Patent Application
WEAR INDICATOR FOR A JOINT BETWEEN A RISER AND A FLOATING PLATFORM
- Publication number 20190330954
- Publication date Oct 31, 2019
- Oil States Industries (UK) Limited
- Richard JOHNSTON
- E21 - EARTH DRILLING MINING