John W. Kochera

Follow

Person

Conroe, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Wear and buckling resistant drill pipe
- Patent number 9,091,124
- Issue date Jul 28, 2015
- Weatherford Technology Holdings, LLC
- Ghazi J. Hashem
- E21 - EARTH DRILLING MINING
Information Patent Grant
Repaired wear and buckle resistant drill pipe and related methods
- Patent number 9,085,942
- Issue date Jul 21, 2015
- Weatherford Technology Holdings, LLC
- Ghazi J. Hashem
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
WEAR AND BUCKLING RESISTANT DRILL PIPE
- Publication number 20130098687
- Publication date Apr 25, 2013
- Ghazi J. Hashem
- E21 - EARTH DRILLING MINING
Information Patent Application
REPAIRED WEAR AND BUCKLE RESISTANT DRILL PIPE AND RELATED METHODS
- Publication number 20130098690
- Publication date Apr 25, 2013
- Ghazi J. Hashem
- E21 - EARTH DRILLING MINING