David VIERAITIS

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The Woodlands, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Differential flow measurement with Coriolis flowmeter
- Patent number 10,598,527
- Issue date Mar 24, 2020
- Weatherford Technology Holdings, LLC
- Walter S. Dillard
- G01 - MEASURING TESTING
Information Patent Grant
Three-way flow sub for continuous circulation
- Patent number 10,107,053
- Issue date Oct 23, 2018
- Weatherford Technology Holdings, LLC
- Ram K. Bansal
- E21 - EARTH DRILLING MINING
Information Patent Grant
Controlled pressure drilling system with flow measurement and well...
- Patent number 10,094,186
- Issue date Oct 9, 2018
- Weatherford Technology Holdings, LLC
- Walter S. Dillard
- E21 - EARTH DRILLING MINING
Information Patent Grant
Three-way flow sub for continuous circulation
- Patent number 9,353,587
- Issue date May 31, 2016
- Weatherford Technology Holdings, LLC
- Ram K. Bansal
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
THREE-WAY FLOW SUB FOR CONTINUOUS CIRCULATION
- Publication number 20160281448
- Publication date Sep 29, 2016
- Weatherford Technology Holdings, LLC.
- Ram K. BANSAL
- E21 - EARTH DRILLING MINING
Information Patent Application
Controlled Pressure Drilling System with Flow Measurement and Well...
- Publication number 20160138351
- Publication date May 19, 2016
- Weatherford Technology Holdings, LLC.
- Walter S. Dillard
- E21 - EARTH DRILLING MINING
Information Patent Application
THREE-WAY FLOW SUB FOR CONTINUOUS CIRCULATION
- Publication number 20130068532
- Publication date Mar 21, 2013
- Ram K. BANSAL
- E21 - EARTH DRILLING MINING