Ditmar Clasen

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Hannover, DE

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and methods for tong operation
- Patent number 10,822,893
- Issue date Nov 3, 2020
- Weatherford Technology Holdings, LLC
- Georg Zimbelmann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Wellbore tong
- Patent number 10,760,359
- Issue date Sep 1, 2020
- Weatherford Technology Holdings, LLC
- Ditmar Clasen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and methods for tong operation
- Patent number 10,472,906
- Issue date Nov 12, 2019
- Weatherford Technology Holdings, LLC
- Georg Zimbelmann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tong positioning arm
- Patent number 9,068,406
- Issue date Jun 30, 2015
- Weatherford Technology Holdings, LLC
- Ditmar Clasen
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS AND METHODS FOR TONG OPERATION
- Publication number 20200072002
- Publication date Mar 5, 2020
- Weatherford Technology Holdings, LLC.
- Georg Zimbelmann
- E21 - EARTH DRILLING MINING
Information Patent Application
WELLBORE TONG
- Publication number 20200018129
- Publication date Jan 16, 2020
- Weatherford Technology Holdings, LLC.
- Ditmar CLASEN
- E21 - EARTH DRILLING MINING
Information Patent Application
COMBINED MULTI-COUPLER WITH ROTATING LOCKING METHOD FOR TOP DRIVE
- Publication number 20190100970
- Publication date Apr 4, 2019
- Weatherford Technology Holdings, LLC.
- Christian MUELLER
- E21 - EARTH DRILLING MINING
Information Patent Application
APPARATUS AND METHODS FOR TONG OPERATION
- Publication number 20190055796
- Publication date Feb 21, 2019
- Weatherford Technology Holdings, LLC.
- Georg Zimbelmann
- E21 - EARTH DRILLING MINING
Information Patent Application
TONG POSITIONING ARM
- Publication number 20110120730
- Publication date May 26, 2011
- Ditmar Clasen
- E21 - EARTH DRILLING MINING