For the Inventor, By the Inventor

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Ratingen-Lintorf, Germany

Karrena Gmbh

USPTO Granted Patents = 3

Trademarks = 2

Forward Citations = 21

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9 inventors (with patents filed for the assignee):

Wolfgang Deeke (1 out of 3 patents)

Klaus Kohnen (1 out of 17 patents)

Ulrich Gerhardus (1 out of 6 patents)

4. Josef Hibbel (1 out of 12 patents)

5. Jurgen R Heering (1 out of 7 patents)

6. Michael Havlik (1 out of 2 patents)

7. Hermann Bottenbruch (1 out of 1 patent)

8. Heinrich Scheve (1 out of 8 patents)

9. Rainer Gorris (1 out of 2 patents)

3 patents: Sort by Forward Citations

1. 5810075 - Heat-insulating lining on heat exchanger surfaces (1998-09-22),

2. 4437864 - Plant with a reactor container, particularly for the gasification of (1984-03-20),

3. 4216709 - Chimney (1980-08-12),

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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#1 in Ratingen-Lintorf

#8,282 in Germany

Ratingen-Lintorf, Germany

Karrena Gmbh

Forward Citations = 21

9 inventors:

Wolfgang Deeke (1 out of 3 patents)

Klaus Kohnen (1 out of 17 patents)

Ulrich Gerhardus (1 out of 6 patents)

4. Josef Hibbel (1 out of 12 patents)

5. Jurgen R Heering (1 out of 7 patents)

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