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Oberhausen, Germany

Man Gutehoffnungshutte

USPTO Granted Patents = 37

Forward Citations = 268

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33 inventors (with patents filed for the assignee):

Wilfried Blotenberg (7 out of 26 patents)

Frohmut Vollhardt (4 out of 21 patents)

Hartmut Grathoff (4 out of 12 patents)

4. Joachim Kotzur (3 out of 16 patents)

5. Heinz Guido (3 out of 6 patents)

6. Gunter Wolters (2 out of 4 patents)

7. Lubomyr Turanskyj (2 out of 3 patents)

8. Jan Ghering (2 out of 2 patents)

9. Peter Buthmann (2 out of 2 patents)

10. Heinz Haacker (2 out of 4 patents)

11. Helmut Wensing (2 out of 2 patents)

12. Manfred Schubert (1 out of 12 patents)

13. Georg Weissbacher (1 out of 2 patents)

14. Manfred Forster (1 out of 8 patents)

15. Klaus Knop (1 out of 11 patents)

37 patents: Sort by Forward Citations

1. 5538216 - Support device of a laying vehicle, especially of a track-laying vehicle (1996-07-23),

2. 5501563 - Bulk material loading and unloading facility for sea-going ships (1996-03-26),

3. 5480274 - Aircraft tug without tow bar (1996-01-02),

4. 5305868 - Cover belt conveyor (1994-04-26),

5. 5263690 - Apparatus for metallurgical treatment of molten steel (1993-11-23),

6. 5198004 - Activated carbon filter for removing toxic substances, e.g., dioxins and (1993-03-30),

7. 5013201 - Traveling conveyor arrangement (1991-05-07),

8. 4976611 - Method and apparatus for the thermal treatment of waste materials (1990-12-11),

9. 4969803 - Compressor unit (1990-11-13),

10. 4968215 - Device for control of a turbocompressor (1990-11-06),

11. 4962557 - Device for opening inner and outer pontoons of a W-shaped, unfoldable (1990-10-16),

12. 4944652 - Process and device for the control of turbo compressors (1990-07-31),

13. 4936740 - Method of protecting a turbocompressor from surging by blowing off (1990-06-26),

14. 4932211 - Internal combustion engine charging unit (1990-06-12),

15. 4926642 - Internal combustion engine charging unit (1990-05-22),

Mannesmann is a leading global engineering and manufacturing company that provides innovative solutions across various industries. With a rich history spanning over a century, Mannesmann is renowned for its expertise in steel production, automotive components, industrial engineering, and engineering services. The company is committed to delivering high-quality products and services tailored to meet the evolving needs of its customers worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

37 Patents

#4 in

#1,389 in Germany

#17,736 in the World

Oberhausen, Germany

Man Gutehoffnungshutte

Forward Citations = 268

33 inventors:

Wilfried Blotenberg (7 out of 26 patents)

Frohmut Vollhardt (4 out of 21 patents)

Hartmut Grathoff (4 out of 12 patents)

4. Joachim Kotzur (3 out of 16 patents)

5. Heinz Guido (3 out of 6 patents)

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