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Hanover, Germany

Berstorff Gmbh

USPTO Granted Patents = 16

% Expired Patents = 81.3

CIPO Patents = 3

Forward Citations = 83

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13 inventors (with patents filed for the assignee):

Siegfried Chszaniecki (5 out of 7 patents)

Reinhard Uphus (4 out of 9 patents)

Michael Behling (2 out of 6 patents)

4. Gregor Chszaniecki (2 out of 2 patents)

5. Florian Fischer (1 out of 10 patents)

6. Harald Hepke (1 out of 6 patents)

7. Olaf Skibba (1 out of 2 patents)

8. Uphus Reinhard (1 out of 1 patent)

9. Matthias Nolting (1 out of 1 patent)

10. Fritz Röthemeyer (1 out of 1 patent)

11. Joachim Brodmann (1 out of 1 patent)

12. Uwe Kröger (1 out of 1 patent)

13. Friedrich-Otto Behrens (1 out of 3 patents)

14. Florian W Fischer (0 patent)

16 patents: Sort by Forward Citations

1. 7354188 - Gear pump having input and output screw shafts with a decreasing flight depth toward a gear section in transfer mix areas (2008-04-08),

2. 7290923 - Extruder/gear pump assembly (2007-11-06),

3. 7128546 - Underwater granulator with a water pipe mounted in a swivel joint (2006-10-31),

4. 7017732 - Multiple extruder configuration (2006-03-28),

5. 7011112 - Diverter valve for an extruder, in particular a twin-screw extruder (2006-03-14),

6. 6974310 - Screw extruder and gear pump arrangement for highly viscous media (2005-12-13),

7. 6974243 - Screw element for same-sense rotating multi-screw extruders (2005-12-13),

8. 6854873 - Extruder for processing rubber mixtures (2005-02-15),

9. 6827477 - Compounder installation (2004-12-07),

10. 6805480 - Cylinder for a twin-screw extruder with a helical channel of varying depth (2004-10-19),

11. 6805479 - Extrusion system comprising a screw changing device (2004-10-19),

12. 6732620 - Cutting machine with rotating cutting blade (2004-05-11),

13. 6592350 - Underwater pelletizer with separator (2003-07-15),

14. 6550954 - Method for producing a compound from a flowable plastic material and a solid fiber core by means of extrusion and device for carrying out said method (2003-04-22),

15. 6474966 - Slot die for producing webs of a foamed plastic material (2002-11-05),

Company Overview

Berstorff GmbH, headquartered in Hanover, Germany, specializes in the development and manufacturing of advanced machinery and systems for the rubber and plastics processing industries. The company is recognized for its expertise in extruders, calenders, and complete production lines, catering to a diverse range of applications. With a strong focus on innovation, Berstorff integrates cutting-edge technology into its solutions, enhancing efficiency and performance for clients globally.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

16 Patents

#49 in Hanover

#2,625 in Germany

#37,868 in the World

Hanover, Germany

Berstorff Gmbh

Forward Citations = 83

13 inventors:

Siegfried Chszaniecki (5 out of 7 patents)

Reinhard Uphus (4 out of 9 patents)

Michael Behling (2 out of 6 patents)

4. Gregor Chszaniecki (2 out of 2 patents)

5. Florian Fischer (1 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Berstorff Gmbh. Retrieved from https://idiyas.com/company/berstorff

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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