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Augsburg, Germany

Sigri Elektrographit Gmbh

USPTO Granted Patents = 23

Forward Citations = 266

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37 inventors (with patents filed for the assignee):

Harald Tillmanns (4 out of 4 patents)

Gerhard Pietzka (4 out of 4 patents)

Franz Brandmair (3 out of 3 patents)

4. Dietmar Honig (3 out of 3 patents)

5. Ottmar Rubisch (3 out of 3 patents)

6. Adolf Swozil (2 out of 7 patents)

7. Ingo Romey (2 out of 24 patents)

8. Hans Jonas (2 out of 2 patents)

9. Alfred Hirschvogel (2 out of 2 patents)

10. Gunter Bewer (2 out of 2 patents)

11. Dieter Lieberoth (2 out of 2 patents)

12. Eckhard Schulz (1 out of 2 patents)

13. Gerhard Ullmann (1 out of 6 patents)

14. Hans Herbst (1 out of 3 patents)

15. Horst Boder (1 out of 1 patent)

23 patents: Sort by Forward Citations

1. 4507860 - Production line for graphite nipples (1985-04-02),

2. 4482314 - Method for heating carbon blanks (1984-11-13),

3. 4474233 - Tube bundle heat exchanger (1984-10-02),

4. 4431686 - Method for coating a porous electrode (1984-02-14),

5. 4425820 - Connecting rod of a composite material and method for manufacturing the (1984-01-17),

6. 4369683 - Discharging device for an extrusion press (1983-01-25),

7. 4366191 - Method of increasing the strength of carbon and graphite members (1982-12-28),

8. 4296177 - Flexible graphite sheet, material or layer containing metal molybdate (1981-10-20),

9. 4289604 - Method of producing an isotropic coke (1981-09-15),

10. 4288353 - Carbon bearing contact paste (1981-09-08),

11. 4252629 - Electrode for electrochemical processes especially electrowinning and (1981-02-24),

12. 4219405 - Method of continuously producing coke (1980-08-26),

13. 4197149 - Method for joining together shaped bodies of polytetrafluoroethylene (1980-04-08),

14. 4179289 - Electrode for electrochemical processes and method of producing the same (1979-12-18),

15. 4137150 - Method for the manufacture of a coal-tar pitch coke (1979-01-30),

Company Overview

Sigri Elektrographit GmbH, based in Augsburg, Germany, specializes in the development and manufacturing of high-performance carbon and graphite products. The company serves various industries, including automotive, aerospace, and energy, providing advanced materials that enhance performance and efficiency. With a strong focus on innovation, Sigri is dedicated to research in carbon technology, contributing to sustainable solutions and applications in diverse fields. Their expertise positions them as a key player in the global market for specialty materials.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

23 Patents

#14 in Meitingen b. Augsburg

#1,985 in DT

#27,714 in the World

Augsburg, Germany

Sigri Elektrographit Gmbh

Forward Citations = 266

37 inventors:

Harald Tillmanns (4 out of 4 patents)

Gerhard Pietzka (4 out of 4 patents)

Franz Brandmair (3 out of 3 patents)

4. Dietmar Honig (3 out of 3 patents)

5. Ottmar Rubisch (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sigri Elektrographit Gmbh. Retrieved from https://idiyas.com/company/sigri-elektrographit

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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