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For the Inventor, By the Inventor

Tirschenreuth, Germany

Hamm Ag


USPTO Granted Patents = 123

% Expired Patents = 1.6


Trademarks = 3

Forward Citations = 849

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72 inventors (with patents filed for the assignee):

goldMedal Matthias Meier (31 out of 32 patents)

silverMedal Ulrich Ewringmann (23 out of 98 patents)

bronzeMedal Werner Völkel (13 out of 13 patents)

4.  Axel Römer (12 out of 12 patents)

5.  Gernot Reif (11 out of 11 patents)

6.  Axel Roemer (11 out of 11 patents)

7.  Detlef Bornemann (10 out of 10 patents)

8.  Gerd Köstler (10 out of 10 patents)

9.  Stefan Reber (10 out of 10 patents)

10.  Boris Eickhoff (10 out of 10 patents)

11.  Gerhard Mahler (9 out of 9 patents)

12.  Markus Beese (9 out of 9 patents)

13.  Ronny Pieske (8 out of 8 patents)

14.  Sebastian Villwock (8 out of 13 patents)

15.  Stefan Braunschläger (7 out of 7 patents)


Core Competencies:
Soil Compactor
Soil Roller
Ground Processing
Compaction State
Oscillation Module
Drive System
Construction Machine
Vibration Detection
Road Roller
Soil Preparation
Earth Working Roller
Compactor Roller

123 patents:

1. 12735848 - Ground processing roller (2026-09-15),
2. 12698609 - Wheel assembly for a soil compactor (2026-08-04),
3. 12612743 - Soil processing roller and method for operating a soil processing roller (2026-04-28),
4. 12590432 - Soil processing machine and method for operating a soil processing machine (2026-03-31),
5. 12577739 - Roller tool for a ground processing roller (2026-03-17),
6. 12577738 - Roller tool for a soil processing roller (2026-03-17),
7. 12565105 - Method for operating a soil processing machine (2026-03-03),
8. 12473026 - Method for operating a soil processing machine (2025-11-18),
9. 12410566 - Compactor roller for a soil compactor (2025-09-09),
10. 12376508 - Sheath for a soil working roller (2025-08-05),
11. 12370913 - Soil processing machine (2025-07-29),
12. 12331475 - Soil processing roller (2025-06-17),
13. 12296667 - Soil processing machine (2025-05-13),
14. 12188188 - Method for providing information related to the compaction state of a soil when performing a compaction operation with a soil compactor (2025-01-07),
15. 12110640 - Soil working roller for a soil processing machine (2024-10-08),
Company Overview
Hamm AG, headquartered in Tirschenreuth, Germany, specializes in the development and manufacturing of advanced soil processing equipment. The company focuses on innovative technologies for soil compaction, including soil compactors and rollers, which are essential for construction and civil engineering projects. Their expertise encompasses various core technology topics such as compaction state monitoring, oscillation modules, and drive systems, ensuring optimal performance and efficiency in ground processing applications.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

Hamm Ag USPTO Patent Assignee Logo
123 Patents

#1 in Tirschenreuth

#485 in Germany

#6,505 in the World

Tirschenreuth, DE
Tirschenreuth, Germany

Hamm Ag

Forward Citations = 849

72 inventors:

goldMedal Matthias Meier (31 out of 32 patents)

silverMedal Ulrich Ewringmann (23 out of 98 patents)

bronzeMedal Werner Völkel (13 out of 13 patents)

4.  Axel Römer (12 out of 12 patents)

5.  Gernot Reif (11 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hamm Ag. Retrieved from https://idiyas.com/company/hamm-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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