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Dusseldorf, Germany

Schloemann-Siemag Aktiengesellschaft

USPTO Granted Patents = 52

Forward Citations = 408

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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

Forging Press

Plastic Injection

Cooling Apparatus

Shear Device

Conveying Apparatus

Metal Forming

Strand Guide

Dummy Block Securing

Hydraulic Adjustment

Continuous Casting

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),

Schloemann-Siemag Aktiengesellschaft is a leading manufacturer of extrusion and forging technology for the metalworking industry. With a history dating back over 150 years, the company has a strong reputation for delivering innovative and reliable solutions. Their products and services range from individual machines to complete production lines, catering to a wide range of industries including automotive, aerospace, and construction.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

52 Patents

#6 in Dusseldorf

#1,051 in Germany

#13,167 in the World

Dusseldorf, Germany

Schloemann-Siemag Aktiengesellschaft

Forward Citations = 408

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)

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