Growing community of inventors

Naila, Germany

Helmut Sporl

Average Co-Inventor Count = 1.50

ph-index = 3

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 62

Helmut SporlHelmut Etschel (2 patents)Helmut SporlHelmut Sporl (3 patents)Helmut EtschelHelmut Etschel (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Emu Unterwasserpumpen Gmbh (2 from 11 patents)

2. E+m Maschinenbau (1 from 2 patents)


3 patents:

1. D432621 - Propeller for agitating liquids

2. D431627 - Propeller for agitating liquids

3. 5338116 - Guide means for a submersible mixer and the like

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as of
12/18/2025
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