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Kristiansand S, Norway

Mhwirth As

USPTO Granted Patents = 36

CIPO Patents = 1

EPO Patents = 7

Trademarks = 2

Forward Citations = 49

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40 inventors (with patents filed for the assignee):

Gjerulf Ottersland (5 out of 5 patents)

Petter Mydland (4 out of 4 patents)

Geir Lien (4 out of 4 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)

36 patents: Sort by Forward Citations

1. 12361355 - Drilling systems and methods (2025-07-15),

2. 12270260 - Riser clamp (2025-04-08),

3. 12241355 - Drilling systems and methods (2025-03-04),

4. 12241316 - Methods and systems for earth drilling (2025-03-04),

5. 12031393 - Drilling plants and methods (2024-07-09),

6. 11851954 - Riser assembly (2023-12-26),

7. 11814905 - Drilling rig systems and methods (2023-11-14),

8. 11725469 - Methods and systems for earth drilling (2023-08-15),

9. 11555361 - Crane yoke, crane and method for handling tubulars (2023-01-17),

10. 11247879 - Winch system (2022-02-15),

11. 10871047 - Drilling plant machine and method of operation (2020-12-22),

12. 10801279 - Fingerboard storage arrangement (2020-10-13),

13. 10745974 - Hoisting system (2020-08-18),

14. 10731426 - Drilling system and method (2020-08-04),

15. 10634583 - Condition monitoring method (2020-04-28),

MHWIRTH AS is a leading provider of drilling solutions and services for the oil and gas industry. With over 100 years of experience, the company specializes in designing and manufacturing drilling equipment, including top drives, pipe handling systems, and drilling control systems. MHWIRTH AS delivers reliable and innovative solutions that help their customers enhance drilling efficiency and safety. With a global presence, the company serves clients in various sectors, including offshore, onshore, and deepwater drilling operations.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

36 Patents

#2 in Kristiansand S

#47 in Norway

#18,168 in the World

Kristiansand S, Norway

Mhwirth As

Forward Citations = 49

40 inventors:

Gjerulf Ottersland (5 out of 5 patents)

Petter Mydland (4 out of 4 patents)

Geir Lien (4 out of 4 patents)

4. Dag Vavik (3 out of 6 patents)

5. Soeren Oeydna (3 out of 3 patents)

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