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Cologne, Germany

Khd Humboldt Wedag Ag

USPTO Granted Patents = 37

Trademarks = 2

Forward Citations = 222

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44 inventors (with patents filed for the assignee):

Hubert Ramesohl (9 out of 32 patents)

Horst Schilling (6 out of 8 patents)

Andreas Hand (6 out of 6 patents)

4. Carsten Eckert (6 out of 8 patents)

5. Siegfried Strasser (5 out of 16 patents)

6. Alexander Hagedorn (5 out of 15 patents)

7. Ralf Filges (5 out of 12 patents)

8. Stephan Kuhnke (4 out of 4 patents)

9. Hans-Wilhelm Meyer (3 out of 4 patents)

10. Albert Süssegger (3 out of 3 patents)

11. Michael Brachthäuser (3 out of 3 patents)

12. Norbert Streit (2 out of 4 patents)

13. Christian Splinter (2 out of 12 patents)

14. Matthias Mersmann (1 out of 5 patents)

15. Richard Cusick (1 out of 1 patent)

37 patents: Sort by Forward Citations

1. 7021013 - Compensator for compensating thermal expansions (2006-04-04),

2. 6884064 - Burner mechanism for a rotary kiln (2005-04-26),

3. 6875267 - Process and device for feeding dispersible solid fuels into the calcinator of a cement clinker production line (2005-04-05),

4. 6855302 - Method for emission control of dioxin and/or furan waste gas pollutants in a cement clinker production line (2005-02-15),

5. 6845867 - Classifier for the classification of granular material (2005-01-25),

6. 6695911 - Method and installation for production of cement clinker (2004-02-24),

7. 6691628 - Method and apparatus for thermal processing of powder raw materials (2004-02-17),

8. 6666680 - Multi-train installation for the production of cement clinker from raw meal (2003-12-23),

9. 6666394 - Milling installation (2003-12-23),

10. 6655617 - Drive system for a tube mill (2003-12-02),

11. 6652272 - Device for sluicing a hot meal-form material (2003-11-25),

12. 6626662 - System for manufacturing cement clinker (2003-09-30),

13. 6595772 - Method and apparatus for the thermal treatment of mealy raw materials (2003-07-22),

14. 6557790 - Circuit grinding apparatus with high-pressure roller mill and sifter (2003-05-06),

15. 6524099 - Method and apparatus for thermal treatment of mealy raw materials (2003-02-25),

KHD Humboldt Wedag AG is a global engineering company specializing in the design, production, and servicing of cement plants, industrial mineral plants, and mineral processing equipment. With a history of over 165 years, KHD offers innovative solutions and advanced technologies to the cement and mining industries worldwide.

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Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

37 Patents

#20 in Cologne

#1,380 in Germany

#17,697 in the World

Cologne, Germany

Khd Humboldt Wedag Ag

Forward Citations = 222

44 inventors:

Hubert Ramesohl (9 out of 32 patents)

Horst Schilling (6 out of 8 patents)

Andreas Hand (6 out of 6 patents)

4. Carsten Eckert (6 out of 8 patents)

5. Siegfried Strasser (5 out of 16 patents)

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