Krohn; Helge

Patent Applications and Registrations

Patent applications and USPTO patent grants for Krohn; Helge.The latest application filed is for "device and method for drilling with continuous tool rotation and continuous drilling fluid supply".

Company Profile

0.12.10

Krohn; Helge - Sandnes NO

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Device and method for drilling with continuous tool rotation and continuous drilling fluid supply Grant 9,708,854 - Krohn , et al. July 18, 2	2017-07-18
Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings Grant 8,931,555 - Krohn , et al. January 13, 2	2015-01-13
Device and Method for Drilling with Continuous Tool Rotation and Continuous Drilling Fluid Supply App 20140318868 - Krohn; Helge ; et al.	2014-10-30
Method for withdrawal and insertion of a drill pipe string in a borehole and also a device for use when practicing the method Grant 8,844,616 - Krohn , et al. September 30, 2	2014-09-30
Device and method for drilling with continuous tool rotation and continuous drilling fluid supply Grant 8,794,351 - Krohn , et al. August 5, 2	2014-08-05
Rotary table device for a pipe string Grant 8,726,984 - Krohn , et al. May 20, 2	2014-05-20
Tool guide device for a drill floor Grant 8,651,200 - Krohn , et al. February 18, 2	2014-02-18
Device and Method for Drilling with Continuous Tool Rotation and Continuous Drilling Fluid Supply App 20130192895 - Krohn; Helge ; et al.	2013-08-01
Rotary Table Device for a Pipe String App 20130014937 - Krohn; Helge ; et al.	2013-01-17
Tool Guide Device for a Drill Floor App 20120261195 - Krohn; Helge ; et al.	2012-10-18
Separating device Grant 8,235,123 - Stokka , et al. August 7, 2	2012-08-07
Device for a Downhole Apparatus for Machining of Casings and Also a Method of Depositing Machined Shavings App 20120118570 - Krohn; Helge ; et al.	2012-05-17
Method for Withdrawal and Insertion of a Drill Pipe String in a Borehole and Also a Device for Use When Practising the Method App 20120000671 - Krohn; Helge ; et al.	2012-01-05
Method for Control of a Drilling Operation App 20110094800 - Krohn; Helge ; et al.	2011-04-28
Separating Device App 20080245528 - Stokka; Oyvind ; et al.	2008-10-09

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