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Itzehoe, Germany

Sihi Gmbh & Co Kg

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USPTO Granted Patents = 17

Forward Citations = 173

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21 inventors (with patents filed for the assignee):

Siegfried Auschrat (5 out of 5 patents)

Wilfried Lehmann (4 out of 5 patents)

Hermann Muller (4 out of 4 patents)

4. Udo Segebrecht (4 out of 4 patents)

5. Ralf Mann (3 out of 4 patents)

6. Klaus Domagalla (3 out of 3 patents)

7. Peter Fandrey (2 out of 3 patents)

8. Klaus-Viktor Peinemann (1 out of 15 patents)

9. Jan Wind (1 out of 10 patents)

10. Alfons Jünemann (1 out of 3 patents)

11. Klaus Ohlrogge (1 out of 7 patents)

12. Gerhard Hauk (1 out of 1 patent)

13. Erwin Zimmermann (1 out of 2 patents)

14. Dietmar Gosch (1 out of 1 patent)

15. Karl-Heinz Nikutta (1 out of 1 patent)

17 patents: Sort by Forward Citations

1. 5800146 - Liquid-ring gas pump with a silencing element in the discharge space (1998-09-01),

2. 5775816 - Bearing arrangement (1998-07-07),

3. 5767635 - Displacement machine with electronic motor synchronization (1998-06-16),

4. 5735674 - Liquid-ring gas pump (1998-04-07),

5. 5549450 - Centrifugal pump of the sectional-casing design (1996-08-27),

6. 5509789 - Liquid ring pump having a sheet metal working chamber casing (1996-04-23),

7. 5489195 - Liquid ring pump having a sheet metal valve plate (1996-02-06),

8. 5456827 - Compressor system having a device for continuous cleaning of the (1995-10-10),

9. 5194074 - Device for continuously purifying the waste gases from a vacuum unit (1993-03-16),

10. 4979875 - Centrifugal pump for the delivery of hot liquids (1990-12-25),

11. 4710105 - Liquid-ring compressor unit (1987-12-01),

12. 4685865 - Liquid ring compressor having openings in housing for emptying liquid (1987-08-11),

13. 4634348 - Liquid ring compressor having a passageway in discharge port for (1987-01-06),

14. 4632649 - Gas jet pump (1986-12-30),

15. 4390317 - Self-priming centrifugal pump, in particular for conveying liquids in (1983-06-28),

Company Overview

Sihi GmbH & Co. KG is a prominent player in the field of pump technology, specializing in the development and manufacturing of high-quality pumps and systems for various industrial applications. The company focuses on providing innovative solutions for fluid handling, catering to sectors such as chemical processing, water treatment, and energy. With a commitment to engineering excellence, Sihi leverages advanced technologies to enhance efficiency and reliability in its products, serving clients primarily in Europe and beyond.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

17 Patents

#2 in Itzehoe

#2,500 in Germany

#35,988 in the World

Itzehoe, Germany

Sihi Gmbh & Co Kg

Forward Citations = 173

21 inventors:

Siegfried Auschrat (5 out of 5 patents)

Wilfried Lehmann (4 out of 5 patents)

Hermann Muller (4 out of 4 patents)

4. Udo Segebrecht (4 out of 4 patents)

5. Ralf Mann (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sihi Gmbh & Co Kg. Retrieved from https://idiyas.com/company/sihi-and-co-kg

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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