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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),

Sigri GmbH is a leading provider of industrial equipment and solutions. With over 20 years of experience, we specialize in manufacturing high-quality products for various industries including automotive, aerospace, and energy. Our products range from specialty graphite materials to advanced heating systems. We are committed to delivering innovative solutions that meet our customers' needs and exceed their expectations.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

16 Patents

#1 in Meitingen

#2,627 in Germany

#36,634 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)

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