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Leverkusen, Germany

Maschinenfabrik Hennecke Gmbh

USPTO Granted Patents = 59

Trademarks = 1

Forward Citations = 585

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46 inventors (with patents filed for the assignee):

Reiner Raffel (36 out of 52 patents)

Hans-Michael Sulzbach (33 out of 55 patents)

Ferdinand Althausen (30 out of 39 patents)

4. Ferdinand Proksa (27 out of 27 patents)

5. Wilfried Ebeling (7 out of 22 patents)

6. Herbert Steilen (5 out of 7 patents)

7. Robert Eiben (5 out of 16 patents)

8. Jurgen Wirth (5 out of 7 patents)

9. Horst Klahre (3 out of 8 patents)

10. Gottfried Bucher (3 out of 3 patents)

11. Helmut Duschanek (3 out of 4 patents)

12. Willi Schmitzer (3 out of 4 patents)

13. Ulrich Osinski (3 out of 3 patents)

14. Hans Klonk (2 out of 2 patents)

15. Lothar Rohrig (2 out of 2 patents)

Core Competencies:

Polyurethane Foam

Foam Manufacturing

Reaction Mixtures

Continuous Production

Molded Plastic Articles

Cavity Filling

Block Foam Production

Energy Supply Systems

Sandwich Elements

Foam Waste Reprocessing

Mixing Nozzles

Flowable Reaction Components

59 patents: Sort by Forward Citations

1. 5883143 - Method and device for the production of foam using carbon dioxide (1999-03-16),

2. 5844015 - Process and device for continuous production of polyurethane block foam (1998-12-01),

3. 5834527 - Process for the manufacture of polyurethane foam moldings (1998-11-10),

4. 5833930 - Apparatus for foam manufacturing using carbon dioxide dissolved under (1998-11-10),

5. 5789457 - Method and device for the production of foam using carbon dioxide (1998-08-04),

6. 5788932 - Apparatus for preparing flowable reaction mixtures from at least two (1998-08-04),

7. 5670179 - Valve for closing cavities which are to be foam-filled (1997-09-23),

8. 5669559 - Process for pulverising polyurethane, polyurea and/or (1997-09-23),

9. 5665286 - Method for the continuous production of foam blocks or sheets (1997-09-09),

10. 5643970 - Method and apparatus for foam manufacture using carbon dioxide dissolved (1997-07-01),

11. 5637277 - Process and device for producing foam casings with CFC-free polyurethane (1997-06-10),

12. 5593010 - Process and device for supplying energy to workstations circulating on a (1997-01-14),

13. 5587182 - Apparatus for the production of endless polyurethane moldings (1996-12-24),

14. 5547276 - Method and apparatus for continuously dispersing fine particle-sized (1996-08-20),

15. 5521224 - Method and apparatus for controlling the number of cells in polyurethane (1996-05-28),

Maschinenfabrik Hennecke GmbH is a leading manufacturer of innovative polyurethane processing equipment based in Sankt Augustin, Germany. With over 70 years of experience, Hennecke provides state-of-the-art machinery and systems for numerous industries, including automotive, construction, refrigeration, and upholstery. They offer a broad range of solutions for material processing and foaming, including high-pressure metering machines, specialized mixing heads, and customer-specific production lines. Hennecke's commitment to advanced technology, exceptional product quality, and outstanding customer service has made them a trusted partner worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

59 Patents

#9 in Leverkusen

#971 in Germany

#11,955 in the World

Leverkusen, Germany

Maschinenfabrik Hennecke Gmbh

Forward Citations = 585

46 inventors:

Reiner Raffel (36 out of 52 patents)

Hans-Michael Sulzbach (33 out of 55 patents)

Ferdinand Althausen (30 out of 39 patents)

4. Ferdinand Proksa (27 out of 27 patents)

5. Wilfried Ebeling (7 out of 22 patents)

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