For the Inventor, By the Inventor

Enter assignee name

Duisburg, Germany

Demag Aktiengesellschaft

USPTO Granted Patents = 73

% Expired Patents = 1.4

Forward Citations = 478

Loading Chart...

Loading Chart...

96 inventors (with patents filed for the assignee):

Klaus Becker (6 out of 24 patents)

Dieter Kothe (6 out of 8 patents)

Uwe Lichtenvort (4 out of 16 patents)

4. Gero Rath (4 out of 9 patents)

5. Jorn Moslener (4 out of 5 patents)

6. Siegfried Dangeleit (4 out of 4 patents)

7. Karlheinz Langlitz (3 out of 13 patents)

8. Gunter Schmitz (3 out of 11 patents)

9. Erich Reth (3 out of 3 patents)

10. Karl E Kaufmann (3 out of 5 patents)

11. Karl Grimpe (3 out of 4 patents)

12. Eckart Schunk (2 out of 4 patents)

13. Heinz Flaig (2 out of 14 patents)

14. Werner Rahmfeld (2 out of 13 patents)

15. Hans-Joachim Schubert (2 out of 3 patents)

Core Competencies:

Continuous Casting

Metal Smelting

Rotary Power Driver

Cooling Spray Nozzle

Strand Support Method

Overload Control Coupling

Railway Vehicle

Rolling Mill

Vessel for Smelting

Hoisting Gear

Protective Nozzle

Revolving Shears

73 patents: Sort by Forward Citations

1. 6612364 - Continuous casting method with soft reduction (2003-09-02),

2. 4300641 - Torque responsive, dual speed rotary power driver (1981-11-17),

3. 4286738 - Revolving tower support for casting ladles (1981-09-01),

4. 4273348 - Roll stabilizing apparatus for vehicles (1981-06-16),

5. 4270738 - Casting ladle mounting for steel strand casting plants (1981-06-02),

6. 4256168 - Cooling spray nozzle adjusting arrangement particularly for steel strand (1981-03-17),

7. 4252180 - Pressure relief apparatus for the supporting beam for metal strand (1981-02-24),

8. 4235623 - Continuous smelting method for ferrochrome (1980-11-25),

9. 4235082 - Detachable overload control coupling between rotating machine elements (1980-11-25),

10. 4227636 - Supporting roller stand for steel slab strand casting plants, (1980-10-14),

11. 4221171 - Direction shift control for connected vehicle undercarriages (1980-09-09),

12. 4219694 - Insulated mounting for live rails (1980-08-26),

13. 4215852 - Apparatus for locking a converter tilting gear during a blasting (1980-08-05),

14. 4214386 - Bucket wheel excavator with vibrating buckets (1980-07-29),

15. 4209681 - Pull switch (1980-06-24),

Company Overview

Demag Aktiengesellschaft, headquartered in Duisburg, Germany, specializes in advanced metal smelting technologies. The company focuses on innovative solutions in continuous casting and rotary power drivers, contributing to the efficiency and effectiveness of metal production processes. Demag's expertise extends to critical components such as cooling spray nozzles and overload control couplings, which enhance operational safety and performance. Additionally, the organization plays a significant role in the development of railway vehicles and rolling mills, reinforcing its commitment to industrial advancement.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

73 Patents

#5 in Duisburg

#786 in Germany

#10,256 in the World

Duisburg, Germany

Demag Aktiengesellschaft

Forward Citations = 478

96 inventors:

Klaus Becker (6 out of 24 patents)

Dieter Kothe (6 out of 8 patents)

Uwe Lichtenvort (4 out of 16 patents)

4. Gero Rath (4 out of 9 patents)

5. Jorn Moslener (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Demag Aktiengesellschaft. Retrieved from https://idiyas.com/company/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]

Loading…