For the Inventor, By the Inventor

Enter assignee name

Stuttgart, Germany

Mahle Gmbh

Calculating rank

USPTO Granted Patents = 144

% Expired Patents = 17.4

EPO Patents = 23

Trademarks = 4

Forward Citations = 1,151

Loading Chart...

Loading Chart...

123 inventors (with patents filed for the assignee):

Rainer Scharp (13 out of 67 patents)

Peter Kemnitz (13 out of 24 patents)

Emil Ripberger (10 out of 10 patents)

4. Wolfgang Issler (9 out of 21 patents)

5. Ulrich Bischofberger (7 out of 29 patents)

6. Karlheinz Bing (7 out of 11 patents)

7. Michael Ullrich (5 out of 12 patents)

8. Martin Ruhle (5 out of 5 patents)

9. Jurgen Ellermann (5 out of 5 patents)

10. Gotthard Stuska (5 out of 5 patents)

11. Dieter Gabriel (4 out of 11 patents)

12. Michael T Lapp (4 out of 27 patents)

13. Rolf-Gerhard Fiedler (4 out of 6 patents)

14. Dieter Messmer (4 out of 10 patents)

15. Hanspeter Wieland (4 out of 4 patents)

Core Competencies:

Piston

Piston Ring

Internal Combustion Engine

Cooling Channel

Metal Matrix Composite

Oil Scraper Ring

Piston Pin Bearing

Cooled Piston

Combustion Bowl

Light-Alloy Bearing

Keystone Ring

Turbocharger

144 patents: Sort by Forward Citations

1. 10982714 - Plain bearing and method (2021-04-20),

2. 8282748 - Process for producing metal matrix composite materials (2012-10-09),

3. 8011095 - Method for producing a piston for an internal combustion engine (2011-09-06),

4. 7892482 - Material on the basis of an aluminum alloy, method for its production, as well as use therefor (2011-02-22),

5. 7806098 - Cylinder sleeve for an internal combustion engine (2010-10-05),

6. 7685710 - Method for producing a piston for an internal combustion engine (2010-03-30),

7. 7647863 - Piston pin bearing for pistons of an internal combustion engine (2010-01-19),

8. 7628134 - Piston for an internal combustion engine (2009-12-08),

9. 7584694 - Composite piston for an internal combustion engine (2009-09-08),

10. 7572344 - Method for the production of wear-resistant sides for a keystone ring for internal combustion engine (2009-08-11),

11. 7464684 - Composite piston for an internal combustion engine (2008-12-16),

12. 7431305 - Oil scraper ring ring groove arrangement for pistons of internal combustion engines (2008-10-07),

13. 7415959 - Cooling channel cover for a piston of an internal combustion engine (2008-08-26),

14. 7409903 - One-piece piston for an internal combustion engine (2008-08-12),

15. 7396018 - Oil scraper ring for pistons of internal combustion engines (2008-07-08),

Company Overview

Mahle GmbH, headquartered in Stuttgart, Germany, is a leading global supplier in the automotive industry, specializing in internal combustion engine components. The company focuses on the development and manufacturing of critical technologies such as pistons, piston rings, and oil scraper rings, alongside innovations in cooling channels and metal matrix composites. Mahle's expertise extends to enhancing engine efficiency and performance, positioning it as a key player in the evolution of automotive engineering and sustainable mobility solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

144 Patents

#15 in

#426 in

#5,665 in the World

Stuttgart, Germany

Mahle Gmbh

Forward Citations = 1,151

123 inventors:

Rainer Scharp (13 out of 67 patents)

Peter Kemnitz (13 out of 24 patents)

Emil Ripberger (10 out of 10 patents)

4. Wolfgang Issler (9 out of 21 patents)

5. Ulrich Bischofberger (7 out of 29 patents)

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

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]

Loading…