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For the Inventor, By the Inventor

Ennepetal, Germany

Dorma Gmbh + Co. Kg


USPTO Granted Patents = 144

% Expired Patents = 29.2



Trademarks = 8

Forward Citations = 2,152

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90 inventors (with patents filed for the assignee):

goldMedal Lothar Ginzel (11 out of 15 patents)

silverMedal Sven Busch (10 out of 20 patents)

bronzeMedal Hubert Elmer (10 out of 14 patents)

4.  Andreas Finke (9 out of 16 patents)

5.  Volker Bienek (9 out of 16 patents)

6.  Georg Kaluza (8 out of 31 patents)

7.  Michael Hufen (7 out of 7 patents)

8.  Dietrich Jentsch (6 out of 9 patents)

9.  Thomas Salutzki (5 out of 16 patents)

10.  Arne Liebscher (5 out of 8 patents)

11.  Bernd Winkler (5 out of 5 patents)

12.  Horst Tillmann (5 out of 11 patents)

13.  Christian Hein (5 out of 6 patents)

14.  Herbert Kordes (5 out of 5 patents)

15.  Olaf Lüttmann (4 out of 4 patents)


Core Competencies:
Door Actuator
Sliding Door
Door Closer
Mobile Partition
Linear Drive
Electromechanical Operator
Glass Door
Locking Mechanism
Rail Guide
Fitting System
Hydraulic Drive
Sensor Arrangement

144 patents:

1. 9181744 - Door actuator (2015-11-10),
2. 9003732 - Mobile partitioning wall (2015-04-14),
3. 9003630 - Assembly plate for housing at least one module in a housing body and corresponding method (2015-04-14),
4. 8963683 - Enabling of functions in a door drive (2015-02-24),
5. 8904710 - Door drive (2014-12-09),
6. 8875344 - Door closer (2014-11-04),
7. 8857015 - Carriage and suspension system utilizing carriages (2014-10-14),
8. 8826494 - Door closer comprising cam drive (2014-09-09),
9. 8819895 - Door closer with free-swing function (2014-09-02),
10. 8806715 - Door closer comprising device for preventing a spring-back (2014-08-19),
11. 8732904 - Door closer (2014-05-27),
12. 8695277 - Door actuator (2014-04-15),
13. 8651534 - Locking system for door leaf installations (2014-02-18),
14. 8627621 - Roller rail for a sliding door and method for actuating a turnout in a roller rail (2014-01-14),
15. 8601744 - Door actuator with an actuator unit (2013-12-10),
Company Overview
Dorma Gmbh + Co. Kg is a leading provider of door drive systems, specializing in innovative solutions for various types of doors, including sliding and glass doors. The company focuses on developing advanced technologies such as door actuators, door closers, and electromechanical operators, ensuring seamless operation and enhanced security. Based in Ennepetal, Germany, Dorma is committed to delivering high-quality products that meet the evolving needs of the architectural and construction industries, emphasizing functionality and design.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Dorma Gmbh + Co. Kg USPTO Patent Assignee Logo
144 Patents

#1 in Ennepetal

#426 in Germany

#5,665 in the World

Ennepetal, DE
Ennepetal, Germany

Dorma Gmbh + Co. Kg

Forward Citations = 2,152

90 inventors:

goldMedal Lothar Ginzel (11 out of 15 patents)

silverMedal Sven Busch (10 out of 20 patents)

bronzeMedal Hubert Elmer (10 out of 14 patents)

4.  Andreas Finke (9 out of 16 patents)

5.  Volker Bienek (9 out of 16 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dorma Gmbh + Co. Kg. Retrieved from https://idiyas.com/company/dorma-plus-company-kg

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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