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For the Inventor, By the Inventor

Leverkusen, Germany

Hennecke Gmbh


USPTO Granted Patents = 32

% Expired Patents = 37.5


Trademarks = 4

Forward Citations = 145

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33 inventors (with patents filed for the assignee):

goldMedal Hans-Michael Sulzbach (16 out of 55 patents)

silverMedal Reiner Raffel (13 out of 52 patents)

bronzeMedal Ferdinand Althausen (6 out of 39 patents)

4.  Jürgen Wirth (5 out of 6 patents)

5.  Martin Schamberg (4 out of 4 patents)

6.  Wolfgang Pawlik (4 out of 4 patents)

7.  Wilfried Ebeling (4 out of 22 patents)

8.  Robert Eiben (4 out of 16 patents)

9.  Florian Thiebes (3 out of 3 patents)

10.  Jens Geuer (2 out of 2 patents)

11.  Juergen Wirth (2 out of 2 patents)

12.  Horst Klahre (2 out of 8 patents)

13.  Michael Begemann (2 out of 2 patents)

14.  Lothar Röhrig (2 out of 2 patents)

15.  Jürgen Wirth (2 out of 2 patents)


Core Competencies:
Component Mixing Jet
Polyurethane Reactive Plastic
Foam Production
Molded Pieces
Slabstock Foam
High-Pressure Mixing Head
Rebonded Foam Blocks
Long Fiber Reinforcement
Sandwich Elements
Flock Composite
Reaction Mixture
Dissolved Carbon Dioxide

32 patents:

1. 10888827 - Component mixing jet (2021-01-12),
2. 9616599 - Method for the continuous production of an endless string of polyurethane reactive plastic material (2017-04-11),
3. 9616596 - Method and device for the production of form parts (2017-04-11),
4. 9186831 - Method and device for producing of a form part (2015-11-17),
5. 8329256 - Method and device for the production of moulded pieces from a layer of polyurethane (2012-12-11),
6. 7968023 - Method for the production of polyurethane block foam (2011-06-28),
7. 7404916 - Process for producing polyurethane moldings (2008-07-29),
8. 7351363 - Press for hard foam plates (2008-04-01),
9. 7278842 - Apparatus for the production of polyurethane sandwich elements (2007-10-09),
10. 7240689 - Multiple component mixing head (2007-07-10),
11. 7230037 - Method for mixing a polyol component and an isocyanate component (2007-06-12),
12. 7144534 - Method and device for producing rebonded foam blocks (2006-12-05),
13. 7101163 - Process and apparatus for the continuous production of slabstock foam (2006-09-05),
14. 6889816 - Device for inserting and removing work stations circulating on chain (2005-05-10),
15. 6833095 - Process for the continuous production of slabstock foam (2004-12-21),
Hennecke GmbH is a leading provider of innovative solutions in the field of polyurethane processing. Based in Leverkusen, Germany, the company specializes in the development and manufacturing of high-performance machinery and systems for various applications, including rigid and flexible foams. Hennecke's expertise extends to diverse industries such as automotive, construction, and furniture, where it focuses on enhancing production efficiency and product quality through advanced technology and engineering solutions.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

32 Patents

#14 in Leverkusen

#1,524 in Germany

#20,660 in the World

Leverkusen, DE
Leverkusen, Germany

Hennecke Gmbh

Forward Citations = 145

33 inventors:

goldMedal Hans-Michael Sulzbach (16 out of 55 patents)

silverMedal Reiner Raffel (13 out of 52 patents)

bronzeMedal Ferdinand Althausen (6 out of 39 patents)

4.  Jürgen Wirth (5 out of 6 patents)

5.  Martin Schamberg (4 out of 4 patents)

Please report any incorrect information to [email protected]
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