For the Inventor, By the Inventor

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Aachen, Germany

Schumag Ag

USPTO Granted Patents = 9

% Expired Patents = 22.2

EPO Patents = 1

Trademarks = 1

Forward Citations = 31

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10 inventors (with patents filed for the assignee):

Bruno Walczak (3 out of 3 patents)

Walter Wetzels (3 out of 5 patents)

Dirk Hessberger (2 out of 3 patents)

4. Rainer Hergemöller (1 out of 1 patent)

5. Karlheinz Grouls (1 out of 1 patent)

6. Erich Walczak (1 out of 1 patent)

7. Guenter Wueller (1 out of 1 patent)

8. Rainer Hergemoeller (1 out of 1 patent)

9. Johann Mostert (1 out of 3 patents)

10. Karl-Heinz Komp (1 out of 1 patent)

11. Heiner Kudrus (2 patents)

9 patents: Sort by Forward Citations

1. 7073363 - Method for processing drawn material and drawn material production installation (2006-07-11),

2. 6638150 - Workpiece holder for a machining apparatus and a corresponding cross-cut machine (2003-10-28),

3. 6450386 - Chain drawing machine for continuous drawing of drawing stock (2002-09-17),

4. 5782121 - Apparatus for the inner profiling of tubes or pipes (1998-07-21),

5. 5603245 - Method for a translatory motion of components (1997-02-18),

6. 5533376 - Method for preparing a tubular blank having a thick wall for a following (1996-07-09),

7. 5524467 - Method for the inner profiling of tubes or pipes (1996-06-11),

8. 5040426 - Drive mechanism for moving a member along a defined path (1991-08-20),

9. 4805434 - Method for straight-line drawing of round material (1989-02-21),

Schumag AG is a global leader in the design and manufacturing of high-precision machinery for the metalworking industry. With over 100 years of experience, we provide innovative solutions for straightening, cutting, and finishing of metal products. Our products are known for their reliability, precision, and efficiency, making us a trusted partner for clients worldwide.

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

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USPTO Data Jan 1 1976 - Sep 22 2026

9 Patents

#20 in Aachen

#4,061 in Germany

Aachen, Germany

Schumag Ag

Forward Citations = 31

10 inventors:

Bruno Walczak (3 out of 3 patents)

Walter Wetzels (3 out of 5 patents)

Dirk Hessberger (2 out of 3 patents)

4. Rainer Hergemöller (1 out of 1 patent)

5. Karlheinz Grouls (1 out of 1 patent)

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