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For the Inventor, By the Inventor

Allerød, Denmark

Welltec A/s


USPTO Granted Patents = 126

% Expired Patents = 25.4



Trademarks = 1

Forward Citations = 360

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37 inventors (with patents filed for the assignee):

goldMedal Jørgen Hallundbæk (68 out of 73 patents)

silverMedal Paul Hazel (20 out of 35 patents)

bronzeMedal Tomas Sune Andersen (18 out of 21 patents)

4.  Christian Krüger (9 out of 12 patents)

5.  Jørgen Hallundbaek (8 out of 9 patents)

6.  Rasmus Sommer (7 out of 7 patents)

7.  Ricardo Reves Vasques (6 out of 34 patents)

8.  Jorgen Hallundbæk (6 out of 7 patents)

9.  Sven Karsten Jensen (5 out of 5 patents)

10.  Peter Gråbæk (4 out of 4 patents)

11.  Thomas Sune Andersen (4 out of 5 patents)

12.  Lars Stæhr (4 out of 10 patents)

13.  Jimmy Kjærsgaard-Rasmussen (3 out of 3 patents)

14.  Jens Barfoed (2 out of 2 patents)

15.  Satish Kumar (2 out of 10 patents)


Core Competencies:
Downhole Tool
Intervention System
Wireline Tool
Hydraulic Pump
Pumping Tool
Expandable Tubular
Wellbore Surveillance
Pressure Testing
Cleaning Tool
Retrieval System
Fracturing Method
Machining System

126 patents:

1. 12590499 - Downhole tubing intervention tool (2026-03-31),
2. 12571273 - Downhole radial force tool assembly (2026-03-10),
3. 12435587 - Wireline expansion tool (2025-10-07),
4. 12428921 - Downhole wireline tool (2025-09-30),
5. 12312886 - Downhole tool string (2025-05-27),
6. 12129744 - Downhole pumping tool (2024-10-29),
7. 12129726 - Hydraulically driven downhole self-propelling wireline tool (2024-10-29),
8. 12116854 - Downhole self-propelling wireline tool (2024-10-15),
9. 12044084 - Hydraulically driven downhole self-propelling wireline tool string (2024-07-23),
10. 12037858 - Downhole positive displacement pump (2024-07-16),
11. 11994001 - Downhole method for separating well tubular structure (2024-05-28),
12. 11988057 - Downhole wireline tool string (2024-05-21),
13. 11982152 - Wireline plug system (2024-05-14),
14. 11859459 - Downhole tool (2024-01-02),
15. 11643897 - Downhole line separation tool (2023-05-09),
Welltec A/S is a leading provider of advanced downhole tools and intervention systems, specializing in innovative solutions for the oil and gas industry. Headquartered in Allerød, Denmark, the company focuses on developing technologies such as wireline tools, hydraulic pumps, and expandable tubulars, enhancing wellbore surveillance and pressure testing capabilities. Welltec's expertise lies in optimizing well performance and reducing operational risks, making it a key player in the global energy sector.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Welltec A/s
126 Patents

#1 in Allerød

#33 in Denmark

#6,356 in the World

Allerød, DK
Allerød, Denmark

Welltec A/s

Forward Citations = 360

37 inventors:

goldMedal Jørgen Hallundbæk (68 out of 73 patents)

silverMedal Paul Hazel (20 out of 35 patents)

bronzeMedal Tomas Sune Andersen (18 out of 21 patents)

4.  Christian Krüger (9 out of 12 patents)

5.  Jørgen Hallundbaek (8 out of 9 patents)

Please report any incorrect information to [email protected]
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