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Düsseldorf, Germany

Mannesmann Aktiengesellschaft

USPTO Granted Patents = 1,178

% Expired Patents = 0.59

CIPO Patents = 3

Trademarks = 1

Forward Citations = 10,469

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1,478 inventors (with patents filed for the assignee):

Fritz-Peter Pleschiutschnigg (36 out of 62 patents)

Hans Schrewe (25 out of 25 patents)

Wolfgang Hauslaib (23 out of 24 patents)

4. Udo Gersemsky (21 out of 31 patents)

5. Bernd Gugel (20 out of 35 patents)

6. Wolfgang Reichelt (18 out of 21 patents)

7. Ingo Von Hagen (18 out of 20 patents)

8. Ewald Feuerstacke (17 out of 17 patents)

9. Johann Stempfle (16 out of 25 patents)

10. Ulrich Urlau (16 out of 21 patents)

11. Lothar Parschat (16 out of 23 patents)

12. Karl Ries (16 out of 18 patents)

13. Roland Staggl (15 out of 15 patents)

14. Rudolf Moller (15 out of 31 patents)

15. Wolfgang Hendrischk (15 out of 15 patents)

Core Competencies:

Telecommunication Networks

Traffic Information

Steel Production

Data Transmission

Mobile Networks

Continuous Casting

Compression Devices

Virtual Private Networks

Gas Storage

Pipe Coupling

User Group Detection

Traffic Data

1,178 patents: Sort by Forward Citations

1. 6965768 - Allocation of a channel for data calls with a different useful signal/ disturb signal ratio than for channels used for voice calls in mobile radio networks (2005-11-15),

2. 6847815 - METHOD FOR DETECTING, ON A TELECOMMUNICATION NETWORK SIDE, THE COMPLEXITY, ON THE TELECOMMUNICATION NETWORK SIDE, OF A TELECOMMUNICATION LINK BETWEEN TWO SUBSCRIBERS IN ORDER TO DETERMINE THE RATE, AND DEVICE FOR REALISING THE SAME (2005-01-25),

3. 6701999 - Method and device for producing slabs of steel (2004-03-09),

4. 6690919 - Determining the quality of telecommunication services (2004-02-10),

5. 6650891 - SMS-supported method for online/offline detection of user groups in mobile wireless networks (2003-11-18),

6. 6644151 - Apparatus for the continuous, chipless separation of individual, identical disk-shaped blanks or rods from round bar-shaped workpieces (2003-11-11),

7. 6633808 - Method for transmitting traffic information (2003-10-14),

8. 6626229 - Method and device for producing slabs (2003-09-30),

9. 6618667 - Method for identifying events which cover more than one segment using segments (2003-09-09),

10. 6615632 - Parting tool (2003-09-09),

11. 6611749 - Binary transmission system (2003-08-26),

12. 6611194 - Method for inserting a service key in a terminal and devices for implementing said method (2003-08-26),

13. 6585299 - Pipe connector (2003-07-01),

14. 6585032 - Strip casting plant (2003-07-01),

15. 6568461 - Continuous casting facility and process for producing thin slabs (2003-05-27),

Company Overview

Mannesmann Aktiengesellschaft, headquartered in Düsseldorf, Germany, is a prominent player in the telecommunication systems sector. The company specializes in the development and manufacturing of advanced telecommunication networks and mobile networks, focusing on enhancing data transmission capabilities. Additionally, Mannesmann is involved in traffic information systems and innovative technologies related to virtual private networks. Its expertise extends to steel production and continuous casting, showcasing a diverse technological portfolio that supports various industrial applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

1,178 Patents

#2 in Düsseldorf

#41 in Germany

#873 in the World

Düsseldorf, Germany

Mannesmann Aktiengesellschaft

Forward Citations = 10,469

1,478 inventors:

Fritz-Peter Pleschiutschnigg (36 out of 62 patents)

Hans Schrewe (25 out of 25 patents)

Wolfgang Hauslaib (23 out of 24 patents)

4. Udo Gersemsky (21 out of 31 patents)

5. Bernd Gugel (20 out of 35 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mannesmann Aktiengesellschaft. Retrieved from https://idiyas.com/company/mannesmann-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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