KH

Kristian Harestad

PA Petroleum Technology Company As: 9 patents #3 of 19Top 20%
BS Bj Services: 1 patents #126 of 250Top 55%
📍 Randaberg, NO: #1 of 53 inventorsTop 2%
Overall (All Time): #403,307 of 4,157,543Top 10%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
12084943 Valve device and method 2024-09-10
12000248 Gas lift valve 2024-06-04
11454086 Valve device and method 2022-09-27
11230893 Method of manufacturing a side pocket mandrel body Ståle Pettersen 2022-01-25
10662723 Method of manufacturing a side pocket mandrel body Ståle Pettersen 2020-05-26
10450821 Wellhead port plug assembly Lino Guedes, Andre Bolager, Erling Kleppa, Trond Kvasnes 2019-10-22
10167699 Expandable device for forming a cement plug 2019-01-01
9611720 Valve arrangement and method of operating the same Ole Sevheim, Erling Kleppa 2017-04-04
9580991 Shear valve Helge Skorve, Magnar Tveiten 2017-02-28
9157294 Wave-inducing device, casing system and method for cementing a casing in a borehole Erling Kleppa 2015-10-13
8136601 Power lift generator Magnar Tveiten, David Hutchinson, Egil Josefsen 2012-03-20
5667015 Well barrier Thor-Peter Herigstad 1997-09-16