Growing community of inventors

Wetter/Ruhr, Germany

Stefan Janzen

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 4

Stefan Janzen ↔ Marc Pelzer (1 patent)Stefan JanzenStefan Janzen (1 patent)Marc PelzerMarc Pelzer (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pelzer Acoustic Products Gmbh (1 from 2 patents)


1 patent:

1. 7838125 - Microperforated metal foil

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12/20/2025
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