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Düsseldorf, Germany

Sms Demag Ag

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USPTO Granted Patents = 227

% Expired Patents = 53.7

CIPO Patents = 5

Trademarks = 4

Forward Citations = 454

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359 inventors (with patents filed for the assignee):

Hans Streubel (11 out of 48 patents)

Axel Weyer (10 out of 27 patents)

Karl Keller (10 out of 47 patents)

4. Adolf Gustav Zajber (9 out of 16 patents)

5. Holger Behrens (8 out of 22 patents)

6. Jürgen Seidel (8 out of 38 patents)

7. Thomas Fest (8 out of 10 patents)

8. Heinrich Marti (8 out of 24 patents)

9. Achim Klein (6 out of 13 patents)

10. Rolf Brisberger (6 out of 12 patents)

11. Manfred Schubert (6 out of 12 patents)

12. Jacques Barbé (6 out of 8 patents)

13. Dieter Figge (6 out of 32 patents)

14. Horst Von Wyl (6 out of 13 patents)

15. Stefan Wendt (5 out of 12 patents)

Core Competencies:

Continuous Casting

Metal Strip Rolling

Cooling Techniques

Strip Casting Machine

Hot-Dip Coating

Surface Defect Detection

Rolling Mill

Metallurgical Vessel

Lubrication Methods

Sealing Devices

Torque Support

Casting Molds

227 patents: Sort by Forward Citations

1. 8654813 - Safety device for detecting electrode breakage (2014-02-18),

2. 8205662 - Method for the continuous casting of a metal strand (2012-06-26),

3. 8162033 - Strand guiding device and method of operating it (2012-04-24),

4. 8141401 - Method and apparatus for analyzing a layer of metal-working liquid (2012-03-27),

5. 8127583 - Coiler mandrel (2012-03-06),

6. 8096157 - Method and device for rolling up a metal strip (2012-01-17),

7. 8007711 - Method for operating a converter (2011-08-30),

8. 7971461 - Method of and apparatus for manufacturing a metal strip (2011-07-05),

9. 7854408 - Double spread-head carousel winder (2010-12-21),

10. 7691320 - Gas supply system for a metallurgical furnace and operating method for said system (2010-04-06),

11. 7690235 - Method of and device for cooling and or lubrication (2010-04-06),

12. 7662336 - Vessel for the metallurgical treatment of pig iron, steel melts and similar, in particular a converter vessel (2010-02-16),

13. 7631531 - Adjusting roll in rolling frames, among others vertical upset forging frames (2009-12-15),

14. 7611150 - Sealing device comprising a two-piece annular body (2009-11-03),

15. 7601221 - Device for hot-dip coating a metal bar (2009-10-13),

Company Overview

Sms Demag AG, based in Düsseldorf, Germany, specializes in advanced metal processing technologies. The company focuses on innovative solutions in continuous casting, metal strip rolling, and hot-dip coating, catering to the evolving needs of the steel and non-ferrous metal industries. Their expertise extends to surface defect detection and the development of rolling mills and metallurgical vessels, positioning them as a key player in enhancing production efficiency and product quality in metal manufacturing.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

227 Patents

#8 in Düsseldorf

#259 in Germany

#3,771 in the World

Düsseldorf, Germany

Sms Demag Ag

Forward Citations = 454

359 inventors:

Hans Streubel (11 out of 48 patents)

Axel Weyer (10 out of 27 patents)

Karl Keller (10 out of 47 patents)

4. Adolf Gustav Zajber (9 out of 16 patents)

5. Holger Behrens (8 out of 22 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sms Demag Ag. Retrieved from https://idiyas.com/company/sms-demag-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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