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For the Inventor, By the Inventor

Hannover, Germany

Berstorff Gmbh


USPTO Granted Patents = 16


Trademarks = 4

Forward Citations = 79

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13 inventors (with patents filed for the assignee):

goldMedal Siegfried Chszaniecki (5 out of 7 patents)

silverMedal Reinhard Uphus (4 out of 9 patents)

bronzeMedal 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:

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),
Berstorff GmbH is a renowned German machinery company specializing in manufacturing and designing extrusion technology solutions. With over 150 years of experience, they have become a leader in the plastic and rubber processing industries. Berstorff offers a wide range of high-quality machines, including extruders, sealing systems, and pelletizers, ensuring efficient and reliable production processes. Their innovative solutions are trusted by customers worldwide for their precision, durability, and advanced features. Visit their website to explore their comprehensive product portfolio and discover the excellence of Berstorff machinery.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

16 Patents

#39 in Hannover

#2,632 in Germany

#36,681 in the World

...
Hannover, Germany

Berstorff Gmbh

Forward Citations = 79

13 inventors:

goldMedal Siegfried Chszaniecki (5 out of 7 patents)

silverMedal Reinhard Uphus (4 out of 9 patents)

bronzeMedal Michael Behling (2 out of 6 patents)

4.  Gregor Chszaniecki (2 out of 2 patents)

5.  Florian Fischer (1 out of 10 patents)

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