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For the Inventor, By the Inventor

Herdecke, Germany

Ewald Doerken Ag


USPTO Granted Patents = 9

% Expired Patents = 33.3


Trademarks = 2

Forward Citations = 29

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15 inventors (with patents filed for the assignee):

goldMedal Marcus Jablonka (3 out of 6 patents)

silverMedal Jörn Schröer (2 out of 12 patents)

bronzeMedal Verena Grossmann (1 out of 4 patents)

4.  Marcel Roth (1 out of 22 patents)

5.  Christopher Koester (1 out of 1 patent)

6.  Ingo Klueppel (1 out of 1 patent)

7.  Gerhard Reussmann (1 out of 1 patent)

8.  Joern Schroeer (1 out of 4 patents)

9.  Michael Dornbusch (1 out of 1 patent)

10.  Hans Detlev Hinz (1 out of 1 patent)

11.  Rüdiger Laur (1 out of 3 patents)

12.  Jochen Lipps (1 out of 2 patents)

13.  Georg Meyer (1 out of 2 patents)

14.  Bernd Meinecke (1 out of 1 patent)

15.  Norbert Klingelhage (1 out of 2 patents)


9 patents:

1. 10011907 - Method for the manufacture of a substrate provided with a chromium VI-free and cobalt-free passivation (2018-07-03),
2. 9816264 - Adherent water vapour permeable air and moisture barrier sheet material (2017-11-14),
3. 9238328 - Method for producing an adhesive connection (2016-01-19),
4. 8733054 - Method for producing a functional layer of a building shell, and building shell and functional layer (2014-05-27),
5. 8647096 - Production of a creped material for connections and transitions on buildings (2014-02-11),
6. 8281533 - Attachment element for studded plastic sheets (2012-10-09),
7. 8263184 - Process for the production of an underlay for roofs (2012-09-11),
8. D646492 - Flexible sheet metal (2011-10-11),
9. D633375 - T-fastener (2011-03-01),
Company Overview
Ewald Doerken AG is a leading manufacturer of high-quality construction and industrial coatings. With over 100 years of experience, the company offers innovative solutions for protecting and enhancing surfaces. Their products are used in a wide range of applications, from automotive and aerospace to architecture and infrastructure. Ewald Doerken AG is committed to sustainability and environmental responsibility, ensuring their coatings are both effective and eco-friendly.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

9 Patents

#2 in Herdecke

#4,072 in Germany

Herdecke, DE
Herdecke, Germany

Ewald Doerken Ag

Forward Citations = 29

15 inventors:

goldMedal Marcus Jablonka (3 out of 6 patents)

silverMedal Jörn Schröer (2 out of 12 patents)

bronzeMedal Verena Grossmann (1 out of 4 patents)

4.  Marcel Roth (1 out of 22 patents)

5.  Christopher Koester (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ewald Doerken Ag. Retrieved from https://idiyas.com/company/ewald-doerken-ag

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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