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For the Inventor, By the Inventor

Hamburg, Germany

Dolmar Gmbh


USPTO Granted Patents = 77

% Expired Patents = 48.1


Forward Citations = 282

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56 inventors (with patents filed for the assignee):

goldMedal Carsten Ziegs (17 out of 23 patents)

silverMedal Andreas Singer (11 out of 11 patents)

bronzeMedal Harry Radel (8 out of 13 patents)

4.  Christian Kellermann (8 out of 8 patents)

5.  Christian Vick (8 out of 9 patents)

6.  Jochen Schoenhaar (6 out of 6 patents)

7.  Klemens Krahn (5 out of 5 patents)

8.  Torsten Haussner (5 out of 5 patents)

9.  Mark Jesse (4 out of 5 patents)

10.  Johannes Lügger (4 out of 4 patents)

11.  Klaus Matthees (4 out of 4 patents)

12.  Peter Schulz (4 out of 4 patents)

13.  Ernst Gorenflo (3 out of 9 patents)

14.  Mathias Wenckel (3 out of 6 patents)

15.  Olaf Kruse (3 out of 4 patents)


Core Competencies:
Starter Device
Silencer
Carburetor
Braking Apparatus
Intake System
Two-Stroke Engine
Damping System
Power Chain Saw
Fuel Injection
Exhaust Muffler
Portable Tool
Chain Saw

77 patents:

1. 9080492 - Multiple-shell silencer / rear shell port (2015-07-14),
2. 8973721 - Braking apparatus (2015-03-10),
3. 8944021 - Starter device for a motor driven machine (2015-02-03),
4. 8714137 - Carburettor unit for motorized equipment (2014-05-06),
5. 8622033 - Device for cleaning intake air (2014-01-07),
6. 8534254 - Starter device (2013-09-17),
7. 8499902 - Braking apparatus (2013-08-06),
8. 8424853 - Actuating device for a choke valve (2013-04-23),
9. 8394165 - Arrangement of an air filter and a diaphragm carburettor (2013-03-12),
10. 8371421 - Brake band holder (2013-02-12),
11. 8172038 - Silencer for a motor device (2012-05-08),
12. 8127743 - Brake for a hedge clipper (2012-03-06),
13. 8127455 - Portable implement (2012-03-06),
14. 8080075 - Intake system for sucking in combustion air and manually guided piece of equipment (2011-12-20),
15. 8069659 - Multiple-shell silencer / rear shell port (2011-12-06),
Company Overview
Dolmar GmbH, based in Hamburg, Germany, specializes in the development and manufacturing of internal combustion engines and related technologies. The company is renowned for its innovative solutions in starter devices, silencers, carburetors, and braking apparatuses, contributing significantly to the efficiency and performance of two-stroke engines. Dolmar's expertise extends to advanced intake systems and damping systems, with a strong focus on power chain saws, positioning itself as a leader in outdoor power equipment and engine technology.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

77 Patents

#15 in Hamburg

#746 in Germany

#9,769 in the World

Hamburg, DE
Hamburg, Germany

Dolmar Gmbh

Forward Citations = 282

56 inventors:

goldMedal Carsten Ziegs (17 out of 23 patents)

silverMedal Andreas Singer (11 out of 11 patents)

bronzeMedal Harry Radel (8 out of 13 patents)

4.  Christian Kellermann (8 out of 8 patents)

5.  Christian Vick (8 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dolmar Gmbh. Retrieved from https://idiyas.com/company/dolmar

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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