% Expired Patents = 9.1

Forward Citations = 165

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8 inventors (with patents filed for the assignee):

Helmut Etschel (4 out of 5 patents)

Peter Rietsch (3 out of 3 patents)

Wolfgang Geier (2 out of 3 patents)

4. Michael Suthmann (2 out of 2 patents)

5. Helmut Sporl (2 out of 3 patents)

6. Bernd Huster (1 out of 1 patent)

7. Andreas Schmid (1 out of 1 patent)

8. Helmut Spörl (1 out of 1 patent)

11 patents: Sort by Forward Citations

1. 7429809 - Driving motor, especially for a pump (2008-09-30),

2. 7056437 - Method and device for the treatment of effluent, sludge and organic substrates (2006-06-06),

3. 6612805 - Hydrodynamic machine (2003-09-02),

4. D459285 - Propeller (2002-06-26),

5. D457850 - Propeller (2002-05-29),

6. 6309181 - Fluid flow machine wheel and uses thereof (2001-10-30),

7. 6235989 - Protective device for the power cable of a submerged pump (2001-05-22),

8. D436647 - Propeller for agitating liquids (2001-01-24),

9. D432621 - Propeller for agitating liquids (2000-10-24),

10. D431627 - Propeller for agitating liquids (2000-10-03),

11. D404040 - Pump for construction sites (1999-01-12),

Company Overview

Emu Unterwasserpumpen GmbH specializes in the development and manufacturing of submersible pumps and related systems. The company is known for its innovative solutions tailored for various applications, including wastewater management, industrial processes, and agricultural use. With a strong focus on quality and efficiency, Emu serves a diverse clientele across Europe and beyond, contributing to advancements in fluid management technologies. Their expertise encompasses both product design and engineering, ensuring reliable performance in challenging environments.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

11 Patents

#124 in Hoff

#3,524 in Germany

#51,801 in the World

Hoff, Germany

Emu Unterwasserpumpen Gmbh

Forward Citations = 165

8 inventors:

Helmut Etschel (4 out of 5 patents)

Peter Rietsch (3 out of 3 patents)

Wolfgang Geier (2 out of 3 patents)

4. Michael Suthmann (2 out of 2 patents)

5. Helmut Sporl (2 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Emu Unterwasserpumpen Gmbh. Retrieved from https://idiyas.com/company/emu-unterwasserpumpen

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]