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Duisburg, Germany

Mannesmann Demag A.g.

USPTO Granted Patents = 40

Trademarks = 4

Forward Citations = 397

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70 inventors (with patents filed for the assignee):

Gunter Ratschat (4 out of 4 patents)

Klaus Becker (3 out of 24 patents)

Gunter Schmitz (3 out of 11 patents)

4. Uwe Lichtenvort (2 out of 16 patents)

5. Karlheinz Langlitz (2 out of 13 patents)

6. Harald Bitsch (2 out of 14 patents)

7. Dietmar Lohse (2 out of 8 patents)

8. Manfred Stoeber (2 out of 3 patents)

9. Karl-Ernst Kaufmann (2 out of 5 patents)

10. Gerhard Komma (2 out of 3 patents)

11. Manfred Driemeyer (2 out of 2 patents)

12. Reiner Kopp (1 out of 9 patents)

13. Karl Zacharias (1 out of 14 patents)

14. Klaus-Dieter Oemus (1 out of 7 patents)

15. Heinz Hasselmann (1 out of 17 patents)

Core Competencies:

Metal Parts Production

Lifting Blocks

Thermal Parting

Heat Recovery

Canal Building

Electro-Metal Smelting

Metallurgical Vessels

Steel Manufacturing

Mobile Delivery Systems

Ozone Production

Dust Removal

Strand Casting

40 patents: Sort by Forward Citations

1. 4967826 - Process for producing metal parts (1990-11-06),

2. D300077 - Double sheave lifting block (1989-02-28),

3. D300076 - Single sheave lifting block (1989-02-28),

4. 4602967 - Method and apparatus for thermal longitudinal parting of rectangular (1986-07-29),

5. 4541864 - Method and apparatus for recovery and recycling of heat from hot gases (1985-09-17),

6. 4478393 - Apparatus for thermal longitudinal parting of rectangular metal plate (1984-10-23),

7. 4434004 - Method for recovery and recycling of heat from hot gases in (1984-02-28),

8. 4432672 - Canal building apparatus (1984-02-21),

9. 4401296 - Electro-metal smelting furnace with taphole arranged at the bottom (1983-08-30),

10. 4392434 - Turbulent waterway (1983-07-12),

11. 4385562 - Traveling crane with top girders at the end of a bridge girder (1983-05-31),

12. 4364704 - Grab bucket suspended from hoisting installation (1982-12-21),

13. 4360305 - Distribution apparatus for throat closures of shaft furnaces, in (1982-11-23),

14. 4354670 - Lining apparatus for metallurgical vessels, particularly for steel mill (1982-10-19),

15. 4354669 - Apparatus for regulating the quantities and percentages of the gaseous (1982-10-19),

Mannesmann Demag A.G. is a leading global manufacturer of industrial cranes, lifting equipment, and automation solutions. With over 200 years of engineering expertise, the company has established a strong reputation for delivering reliable and innovative solutions to various industries including manufacturing, logistics, and construction. Mannesmann Demag is committed to providing cutting-edge technology, exceptional quality, and unmatched customer service.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

40 Patents

#8 in Duisburg

#1,293 in Germany

#16,545 in the World

Duisburg, Germany

Mannesmann Demag A.g.

Forward Citations = 397

70 inventors:

Gunter Ratschat (4 out of 4 patents)

Klaus Becker (3 out of 24 patents)

Gunter Schmitz (3 out of 11 patents)

4. Uwe Lichtenvort (2 out of 16 patents)

5. Karlheinz Langlitz (2 out of 13 patents)

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