Growing community of inventors

Bottrop, Germany

Petra Gehrmann

Average Co-Inventor Count = 8.00

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 = 15

Petra Gehrmann ↔ Philippe Favresse (1 patent)Petra Gehrmann ↔ Oliver Springer (1 patent)Petra Gehrmann ↔ André Scharf (1 patent)Petra Gehrmann ↔ Thomas Mettin (1 patent)Petra Gehrmann ↔ Michael Schwan (1 patent)Petra Gehrmann ↔ Margitta Nilewski (1 patent)Petra Gehrmann ↔ Tobias Wied (1 patent)Petra GehrmannPetra Gehrmann (1 patent)Philippe FavressePhilippe Favresse (21 patents)Oliver SpringerOliver Springer (13 patents)André ScharfAndré Scharf (1 patent)Thomas MettinThomas Mettin (1 patent)Michael SchwanMichael Schwan (1 patent)Margitta NilewskiMargitta Nilewski (1 patent)Tobias WiedTobias Wied (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Evonik Deguesse Gmbh (1 from 1 patent)

2. Evonik Degussa Gmbh (1,242 patents)


1 patent:

1. 9738797 - Use of polyglycerol partial esters as defoamers

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as of
12/7/2025
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