% Expired Patents = 14.3

Trademarks = 2

Forward Citations = 79

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11 inventors (with patents filed for the assignee):

Friedrich Krieger (2 out of 14 patents)

Volker Flaxa (1 out of 5 patents)

Joachim Kroos (1 out of 11 patents)

4. Karl-Heinz Spitzer (1 out of 25 patents)

5. Ulrich Urlau (1 out of 21 patents)

6. Birgit Reichert (1 out of 2 patents)

7. Klaus Freier (1 out of 3 patents)

8. Horst Willeke (1 out of 1 patent)

9. Alfred Fuhrboter (1 out of 1 patent)

10. Manfred Mittelstadt (1 out of 1 patent)

11. Hermann Osterlitz (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 7073564 - System for homogenizing a molten metal film (2006-07-11),

2. 6749696 - Process for producing a cold-rolled strip or sheet of steel and strip or sheet which can be produced by the process (2004-06-15),

3. 4942753 - Process and apparatus for rolling structural shapes (1990-07-24),

4. 4497770 - Storage structure for nuclear waste (1985-02-05),

5. 4460536 - Lifting device for nuclear power plants (1984-07-17),

6. 4354087 - Welding powder feed device (1982-10-12),

7. 4052800 - System for gathering solids from the ocean floor and bringing them to (1977-10-11),

Company Overview

Salzgitter AG is a leading international steel and technology group with a strong focus on sustainability. The company operates in the steel, trading, and services segments, offering a wide range of products and services to customers worldwide. With a history dating back over 150 years, Salzgitter AG is committed to delivering innovative solutions and contributing to a sustainable future.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

7 Patents

#4 in Salzgitter

#4,860 in Germany

Salzgitter, Germany

Salzgitter Ag

Forward Citations = 79

11 inventors:

Friedrich Krieger (2 out of 14 patents)

Volker Flaxa (1 out of 5 patents)

Joachim Kroos (1 out of 11 patents)

4. Karl-Heinz Spitzer (1 out of 25 patents)

5. Ulrich Urlau (1 out of 21 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Salzgitter Ag. Retrieved from https://idiyas.com/company/salzgitter-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]