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For the Inventor, By the Inventor

Hafrsfjord, Norway

Interwell as


USPTO Granted Patents = 3


Forward Citations = 20

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5 inventors (with patents filed for the assignee):

goldMedal Arild F Stein (2 out of 4 patents)

silverMedal Helge Salomonsen (1 out of 1 patent)

bronzeMedal Trond Eidebakk B Lunde (1 out of 1 patent)

4.  William Edmund Rolland Brown (1 out of 1 patent)

5.  Eirik Grande (1 out of 1 patent)


3 patents:

1. 10082005 - Method and device for setting and retrieving a crown plug (2018-09-25),
2. 9835002 - Downhole apparatus and associated methods (2017-12-05),
3. 9267345 - Flow activated circulating valve (2016-02-23),
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USPTO Data Jan 1 1976 - Sep 22 2026

3 Patents

#4 in Hafrsfjord

#524 in Norway

Hafrsfjord, NO
Hafrsfjord, Norway

Interwell as

Forward Citations = 20

5 inventors:

goldMedal Arild F Stein (2 out of 4 patents)

silverMedal Helge Salomonsen (1 out of 1 patent)

bronzeMedal Trond Eidebakk B Lunde (1 out of 1 patent)

4.  William Edmund Rolland Brown (1 out of 1 patent)

5.  Eirik Grande (1 out of 1 patent)

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