Alan Shem

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Combination tubular handler and power swivel unit
- Patent number 11,639,638
- Issue date May 2, 2023
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Grant
Combination tubular handler and power swivel unit
- Patent number 11,208,854
- Issue date Dec 28, 2021
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Grant
Combination tubular handler and power swivel unit
- Patent number 10,851,601
- Issue date Dec 1, 2020
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Grant
Top drive with an airlift thread compensator and a hollow cylinder...
- Patent number 8,127,836
- Issue date Mar 6, 2012
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling rig with a top drive with an air lift thread compensator a...
- Patent number 7,984,757
- Issue date Jul 26, 2011
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for using a top drive with an air lift thread compensator an...
- Patent number 7,921,939
- Issue date Apr 12, 2011
- Larry G. Keast
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
COMBINATION TUBULAR HANDLER AND POWER SWIVEL UNIT
- Publication number 20230220736
- Publication date Jul 13, 2023
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Application
COMBINATION TUBULAR HANDLER AND POWER SWIVEL UNIT
- Publication number 20220090453
- Publication date Mar 24, 2022
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Application
COMBINATION TUBULAR HANDLER AND POWER SWIVEL UNIT
- Publication number 20210040801
- Publication date Feb 11, 2021
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Application
COMBINATION TUBULAR HANDLER AND POWER SWIVEL UNIT
- Publication number 20200048971
- Publication date Feb 13, 2020
- Larry G. Keast
- E21 - EARTH DRILLING MINING