Roger Antonsen

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Randaberg, NO

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Patents Grantslast 30 patents

Information Patent Grant
System and method for operating multiple valves
- Patent number 8,978,765
- Issue date Mar 17, 2015
- I-TEC AS
- Kristoffer Braekke
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expandable ball seat
- Patent number 8,215,401
- Issue date Jul 10, 2012
- I-Tec AS
- Kristoffer Braekke
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS AND METHOD FOR PENETRATING CEMENT SURROUNDING A TUBULAR
- Publication number 20130048306
- Publication date Feb 28, 2013
- Roger ANTONSEN
- E21 - EARTH DRILLING MINING
Information Patent Application
System and Method for Operating Multiple Valves
- Publication number 20120160515
- Publication date Jun 28, 2012
- I-TEC AS
- Kristoffer Braekke
- E21 - EARTH DRILLING MINING
Information Patent Application
System and Method for Operating Multiple Valves
- Publication number 20120145382
- Publication date Jun 14, 2012
- I-TEC AS
- Kristoffer Braekke
- E21 - EARTH DRILLING MINING
Information Patent Application
Expandable Ball Seat
- Publication number 20110198100
- Publication date Aug 18, 2011
- I-TEC AS
- Kristoffer Braekke
- E21 - EARTH DRILLING MINING