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Pforzheim, Germany

Witzenmann Gmbh Metallschlauch-fabrik Pforzheim

USPTO Granted Patents = 21

Trademarks = 2

Forward Citations = 365

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31 inventors (with patents filed for the assignee):

Tom Krawietz (4 out of 5 patents)

Reinhard Gropp (4 out of 4 patents)

Wilfried Winzen (4 out of 4 patents)

4. Carlo Burkhardt (3 out of 3 patents)

5. Fabian Elsasser (3 out of 6 patents)

6. Fabian Elsässer (2 out of 2 patents)

7. Eberhard Wildermuth (2 out of 2 patents)

8. Michael Pluschke (2 out of 4 patents)

9. Bernd Faber (2 out of 2 patents)

10. Armin Winter (1 out of 1 patent)

11. Peter Schüttler (1 out of 1 patent)

12. Richard Bantscheff (1 out of 1 patent)

13. Kai Kowalewsky (1 out of 1 patent)

14. Bernhard Heil (1 out of 1 patent)

15. Frank Picard (1 out of 1 patent)

21 patents: Sort by Forward Citations

1. 6386594 - Connection element for a composite hose and process for connecting composite hose (2002-05-14),

2. 6354332 - Coolant line for air conditioning systems (2002-03-12),

3. 6296282 - Articulated connecting element for piping elements (2001-10-02),

4. 6240969 - Conduit element for exhaust gas conduits of motor vehicles (2001-06-05),

5. 6230748 - Flexible conduit having a cylindrical knit metal wire element (2001-05-15),

6. 6125889 - Flexible conveying element (2000-10-03),

7. 6116287 - Flexible tube element for exhaust systems (2000-09-12),

8. 6062268 - Tube element with one metal bellows (2000-05-16),

9. 6062266 - Multibellows element (2000-05-16),

10. 5901754 - Flexible fluid conduit element with a metal bellows (1999-05-11),

11. 5865475 - Connection between a building component and a pipe-shaped line element (1999-02-02),

12. 5358287 - Jointed pipe connection (1994-10-25),

13. 5024211 - Heat exchange medium connector for movable solar heaters (1991-06-18),

14. 4911206 - Supported flexible thin-walled tube structure (1990-03-27),

15. 4880259 - High-temperature-resistant type coupling (1989-11-14),

Witzenmann GmbH is a leading manufacturer of flexible metal hoses and expansion joints based in Pforzheim, Germany. With decades of experience and expertise, the company offers high-quality products for various industries including automotive, aerospace, and industrial applications. Witzenmann is known for its innovative solutions and reliable products that meet the highest standards of quality and performance.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

21 Patents

#3 in Pforzheim

#2,154 in Germany

#29,047 in the World

Pforzheim, Germany

Witzenmann Gmbh Metallschlauch-fabrik Pforzheim

Forward Citations = 365

31 inventors:

Tom Krawietz (4 out of 5 patents)

Reinhard Gropp (4 out of 4 patents)

Wilfried Winzen (4 out of 4 patents)

4. Carlo Burkhardt (3 out of 3 patents)

5. Fabian Elsasser (3 out of 6 patents)

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