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Meitingen, Germany

Sigri Gmbh

USPTO Granted Patents = 16

Trademarks = 1

Forward Citations = 88

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21 inventors (with patents filed for the assignee):

Jurgen Kunzel (2 out of 4 patents)

Kurt Schaffner (2 out of 2 patents)

Adolf Swozil (2 out of 7 patents)

4. Gerhard Ullmann (2 out of 6 patents)

5. Hubert Jager (2 out of 2 patents)

6. Jurgen Semmler (2 out of 2 patents)

7. Gunter Kraus (2 out of 2 patents)

8. Karl Wimmer (1 out of 2 patents)

9. Ernst Tetzlaff (1 out of 3 patents)

10. Eduard Gohl (1 out of 1 patent)

11. Johann Muller (1 out of 1 patent)

12. Alois Spaderna (1 out of 1 patent)

13. Alfred Lorenz (1 out of 1 patent)

14. Heinrich Kuhn (1 out of 4 patents)

15. Horst Boder (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 5104518 - Process for the inhibition of the puffing of cokes produced from coal (1992-04-14),

2. 5068026 - Process for the production of non-puffing shaped carbon bodies (1991-11-26),

3. 4941692 - Adhesive connection of tubes formed of carbon or graphite (1990-07-17),

4. 4921283 - Connection of carbon or graphite tubes (1990-05-01),

5. 4903641 - Method and apparatus for extracting saturated steam in the synthesis of (1990-02-27),

6. 4716572 - Method for coating carbon and graphite bodies (1987-12-29),

7. 4698189 - Method for the manufacture of vitreous carbon bodies (1987-10-06),

8. 4691324 - Electrode connection (1987-09-01),

9. 4663010 - Anode for electrochemical process (1987-05-05),

10. 4651655 - Method for dissolving salt encrustations in a heat exchanger (1987-03-24),

11. 4641321 - Cooled furnace head for heavy-current resistance furnaces (1987-02-03),

12. 4639930 - Port for graphitization furnace (1987-01-27),

13. 4629280 - Joint threads carbon on graphite electrode (1986-12-16),

14. 4615379 - Storage body for a regenerator (1986-10-07),

15. 4594722 - Graphite electrode for arc furnaces and method for manufacturing same (1986-06-10),

Company Overview

Sigri GmbH, based in Meitingen, Germany, specializes in the development and manufacturing of advanced carbon-based materials and solutions. The company focuses on high-performance products for various industries, including aerospace, automotive, and energy. With a strong emphasis on innovation, Sigri is dedicated to enhancing the performance and sustainability of its offerings through cutting-edge research and technology. Its expertise in carbon technology positions it as a key player in the global materials market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

16 Patents

#1 in Meitingen

#2,625 in Germany

#37,831 in the World

Meitingen, Germany

Sigri Gmbh

Forward Citations = 88

21 inventors:

Jurgen Kunzel (2 out of 4 patents)

Kurt Schaffner (2 out of 2 patents)

Adolf Swozil (2 out of 7 patents)

4. Gerhard Ullmann (2 out of 6 patents)

5. Hubert Jager (2 out of 2 patents)

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

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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