% Expired Patents = 16.7

EPO Patents = 9

Trademarks = 1

Forward Citations = 7

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11 inventors (with patents filed for the assignee):

Kai Klingenburg (2 out of 2 patents)

Hans Klingenburg (2 out of 2 patents)

Peter Greil (1 out of 12 patents)

4. Peter Braeutigam (1 out of 1 patent)

5. Hans Peters (1 out of 1 patent)

6. Martin Moeritz (1 out of 1 patent)

7. Heino Sieber (1 out of 4 patents)

8. Norbert Struensee (1 out of 1 patent)

9. Jing Cao (1 out of 1 patent)

10. Thomas Westerdorf (1 out of 1 patent)

11. Jan Kleindienst (1 out of 1 patent)

12. Kai Klingenburg (0 patent)

13. Martin MÖRITZ (0 patent)

14. Peter BRÄUTIGAM (0 patent)

6 patents: Sort by Forward Citations

1. 12687351 - Plate for a plate-type heat exchanger (2026-07-21),

2. 12650267 - Fixing device for reinforcing the joint of a rotary heat exchanger (2026-06-09),

3. 10533806 - Rotary heat exchanger (2020-01-14),

4. 8973906 - Device for conditioning an air flow (2015-03-10),

5. 7849913 - Rotating heat exchanger and method for sealing the same (2010-12-14),

6. 7204869 - Sorption rotor (2007-04-17),

Klingenburg GmbH is a leading manufacturer of industrial ventilation systems and components. With over 50 years of experience, Klingenburg offers a wide range of products including fans, heat recovery units, and air distribution systems. Their high-quality and energy-efficient solutions are used in various industries such as automotive, chemical, and food processing. Klingenburg is known for their innovative designs and reliable performance, making them a trusted partner for ventilation solutions worldwide.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

6 Patents

#6 in Gladbeck

#5,401 in Germany

Gladbeck, Germany

Klingenburg Gmbh