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For the Inventor, By the Inventor

Kristiansand, Norway

Mhwirth as


USPTO Granted Patents = 39

% Expired Patents = 5.1



Trademarks = 2

Forward Citations = 50

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41 inventors (with patents filed for the assignee):

goldMedal Petter Mydland (6 out of 6 patents)

silverMedal Gjerulf Ottersland (5 out of 5 patents)

bronzeMedal Geir Lien (5 out of 5 patents)

4.  Dag Vavik (3 out of 6 patents)

5.  Soeren Oeydna (3 out of 3 patents)

6.  Nicolai Nilsen (3 out of 3 patents)

7.  John Magne Johnsen (2 out of 4 patents)

8.  Eivind Gimming Stensland (2 out of 3 patents)

9.  Tor Inge Waag (2 out of 2 patents)

10.  Tord Aslak Aslaksen (2 out of 2 patents)

11.  Per Inge Roensberg (2 out of 2 patents)

12.  Per Morten Loevsland (2 out of 2 patents)

13.  Sjur Henning Hollekim (1 out of 1 patent)

14.  Per Slettedal (1 out of 1 patent)

15.  Atle Slettene (1 out of 1 patent)


Core Competencies:
Drilling System
Anchor Systems
Riser Clamp
Earth Drilling
Hoisting System
Top Drive
Riser Tensioning
Condition Monitoring
Storage Arrangement
Lifting Arm Assembly
Gripping Device
Hydrate Formation

39 patents:

1. 12753664 - Methods and systems for earth drilling (2026-10-06),
2. 12747644 - Drilling system and method of operating a drilling system (2026-09-29),
3. 12654809 - Anchor systems and methods (2026-06-16),
4. 12361355 - Drilling systems and methods (2025-07-15),
5. 12270260 - Riser clamp (2025-04-08),
6. 12241355 - Drilling systems and methods (2025-03-04),
7. 12241316 - Methods and systems for earth drilling (2025-03-04),
8. 12031393 - Drilling plants and methods (2024-07-09),
9. 11851954 - Riser assembly (2023-12-26),
10. 11814905 - Drilling rig systems and methods (2023-11-14),
11. 11725469 - Methods and systems for earth drilling (2023-08-15),
12. 11555361 - Crane yoke, crane and method for handling tubulars (2023-01-17),
13. 11247879 - Winch system (2022-02-15),
14. 10871047 - Drilling plant machine and method of operation (2020-12-22),
15. 10801279 - Fingerboard storage arrangement (2020-10-13),
Mhwirth AS, headquartered in Kristiansand, Norway, specializes in the development and manufacturing of advanced drilling and well intervention technologies for the oil and gas industry. The company focuses on providing innovative solutions that enhance operational efficiency and safety in drilling operations. With a commitment to research and development, Mhwirth leverages cutting-edge technology to support its clients in optimizing their drilling processes and achieving sustainable performance in challenging environments.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

Mhwirth as
39 Patents

#2 in Kristiansand

#43 in Norway

#17,428 in the World

Kristiansand, NO
Kristiansand, Norway

Mhwirth as

Forward Citations = 50

41 inventors:

goldMedal Petter Mydland (6 out of 6 patents)

silverMedal Gjerulf Ottersland (5 out of 5 patents)

bronzeMedal Geir Lien (5 out of 5 patents)

4.  Dag Vavik (3 out of 6 patents)

5.  Soeren Oeydna (3 out of 3 patents)

Please report any incorrect information to [email protected]
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