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Düsseldorf, Germany

Schloemann-Siemag Aktiengesellschaft

USPTO Granted Patents = 52

Forward Citations = 410

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64 inventors (with patents filed for the assignee):

Helmut Eckardt (4 out of 5 patents)

Hans Streubel (3 out of 48 patents)

Hugo Beerens (3 out of 4 patents)

4. Erich Bretschneider (3 out of 4 patents)

5. Wilfried Bald (2 out of 20 patents)

6. Hugo Feldmann (2 out of 21 patents)

7. Friedrich Rotter (2 out of 2 patents)

8. Peter Rudolf Hartwig (2 out of 2 patents)

9. Georg Bollig (2 out of 2 patents)

10. Claus G Schlanzke (2 out of 7 patents)

11. Hermann Leitner (2 out of 3 patents)

12. Johannes Jansen (2 out of 3 patents)

13. Franz-Josef Zilges (2 out of 3 patents)

14. Heinrich Kutz (2 out of 7 patents)

15. Erich Munker (2 out of 2 patents)

Core Competencies:

Rolling Mill

Extrusion Press

Cooling Apparatus

Forging Press

Shear

Plastic Injection

Coil Conveyor

Metal Extrusion

Strand Guide

Control Systems

Safety Devices

Rolling Stand

52 patents: Sort by Forward Citations

1. 4392367 - Process and apparatus for the rolling of strip metal (1983-07-12),

2. 4363394 - Apparatus for conveying rolled stock (1982-12-14),

3. 4334421 - Discharge roll table with a top cover (1982-06-15),

4. 4313322 - Straightening machine for metal plate and strip (1982-02-02),

5. 4308945 - Apparatus for transversely conveying profiled rods and rails (1982-01-05),

6. 4301670 - Rolling mill train (1981-11-24),

7. 4294103 - Overload safety device in hydraulic forming presses, in particular sheet (1981-10-13),

8. 4294099 - Rolling mill train (1981-10-13),

9. 4291571 - Forging press (1981-09-29),

10. 4291564 - Method of and apparatus for rolling sheet steel profiles of different (1981-09-29),

11. 4286453 - Device for securing the dummy block on the press stem of metal-extrusion (1981-09-01),

12. 4276979 - Slab cooling and conveying apparatus (1981-07-07),

13. 4250782 - Shear with inclined guides (1981-02-17),

14. 4250729 - System for selectively transferring flexible and relatively (1981-02-17),

15. 4231553 - Apparatus for cooling rapidly moving rolled material (1980-11-04),

Company Overview

Schloemann-Siemag Aktiengesellschaft, based in Düsseldorf, Germany, specializes in advanced metal forming technology. The company is renowned for its innovative solutions in rolling mills, extrusion presses, and cooling apparatuses, catering to the needs of the metal processing industry. Their expertise extends to forging presses, shears, and plastic injection systems, as well as coil conveyors and metal extrusion technologies. Schloemann-Siemag is committed to enhancing production efficiency and quality in metal manufacturing processes.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

52 Patents

#15 in Düsseldorf

#1,022 in Germany

#13,571 in the World

Düsseldorf, Germany

Schloemann-Siemag Aktiengesellschaft

Forward Citations = 410

64 inventors:

Helmut Eckardt (4 out of 5 patents)

Hans Streubel (3 out of 48 patents)

Hugo Beerens (3 out of 4 patents)

4. Erich Bretschneider (3 out of 4 patents)

5. Wilfried Bald (2 out of 20 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Schloemann-Siemag Aktiengesellschaft. Retrieved from https://idiyas.com/company/schloemann-siemag-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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