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For the Inventor, By the Inventor

Baden-Baden, Germany

Korf-Stahl Ag.

Calculating rank
USPTO Granted Patents = 12

Forward Citations = 108

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18 inventors (with patents filed for the assignee):

goldMedal Emil A Elsner (8 out of 10 patents)

silverMedal Gerhard Fuchs (3 out of 3 patents)

bronzeMedal Ralph Weber (3 out of 5 patents)

4.  Bernt Rollinger (3 out of 4 patents)

5.  Dieter Ch Ameling (2 out of 2 patents)

6.  Rolf Assenmacher (2 out of 2 patents)

7.  Rudolf Kasper (2 out of 3 patents)

8.  Bernhard Rinner (2 out of 3 patents)

9.  Michael Nagl (2 out of 7 patents)

10.  Rolf Hauk (1 out of 25 patents)

11.  William Schwabe (1 out of 1 patent)

12.  William E Schwabe (1 out of 2 patents)

13.  Walter Lugscheider (1 out of 17 patents)

14.  Leo Heinen (1 out of 1 patent)

15.  Rudolph Kasper (1 out of 1 patent)


12 patents:

1. 4409023 - Process for directly making liquid pig-iron from coarse iron ore (1983-10-11),
2. 4396421 - Method of, and arrangement for, producing molten pig iron or steel (1983-08-02),
3. 4392637 - Metallurgical melting apparatus with a blow-nozzle or burner capable of (1983-07-12),
4. 4317677 - Process for producing liquid crude iron and reduction gas (1982-03-02),
5. 4287933 - Continuous casting method with rotary melt movement (1981-09-08),
6. 4279407 - Metallurgical furnace in particular an electric arc furnace (1981-07-21),
7. 4259539 - Melting furnace (1981-03-31),
8. 4256918 - Electrode for arc furnaces (1981-03-17),
9. 4197422 - Cooled cover for an arc furnace (1980-04-08),
10. 4189617 - Liquid-cooled electrode for electric arc furnaces (1980-02-19),
11. 4170712 - Tiltable arc furnace (1979-10-09),
12. 4119792 - Melting furnace (1978-10-10),
Company Overview
Korf-Stahl AG is a prominent player in the steel industry, specializing in the development and production of high-quality steel products. The company focuses on innovative solutions for various applications, including construction and automotive sectors. With a commitment to sustainability and advanced manufacturing techniques, Korf-Stahl AG aims to meet the evolving needs of its clients while maintaining a strong presence in the European market. The company is headquartered in Baden-Baden, Germany, and emphasizes research and development to enhance its product offerings.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

12 Patents

#3 in Baden-Baden

#3,301 in Germany

#48,235 in the World

Baden-Baden, DE
Baden-Baden, Germany

Korf-Stahl Ag.

Forward Citations = 108

18 inventors:

goldMedal Emil A Elsner (8 out of 10 patents)

silverMedal Gerhard Fuchs (3 out of 3 patents)

bronzeMedal Ralph Weber (3 out of 5 patents)

4.  Bernt Rollinger (3 out of 4 patents)

5.  Dieter Ch Ameling (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Korf-Stahl Ag.. Retrieved from https://idiyas.com/company/korf-stahl-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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