Growing community of inventors

Duisburg, Germany

Petra Brandt

Average Co-Inventor Count = 6.41

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 = 44

Petra BrandtStefan Silber (2 patents)Petra BrandtKathrin Lehmann (2 patents)Petra BrandtChristoph Batz-Sohn (1 patent)Petra BrandtEberhard Esselborn (1 patent)Petra BrandtSteffen Hasenzahl (1 patent)Petra BrandtThomas Dietz (1 patent)Petra BrandtSascha Oestreich (1 patent)Petra BrandtArno Knebelkamp (1 patent)Petra BrandtKlaus Jenni (1 patent)Petra BrandtChristian Psiorz (1 patent)Petra BrandtEllen Wallhorn (1 patent)Petra BrandtAngela Rüttgerodt (1 patent)Petra BrandtRalf Mathiak (1 patent)Petra BrandtHans-Leo Karminski (1 patent)Petra BrandtCornelia Schröter (1 patent)Petra BrandtChristoph Batz-sohn (0 patent)Petra BrandtThomas Dietz (0 patent)Petra BrandtSteffen Hasenzahl (0 patent)Petra BrandtAngela Ruettgerodt (0 patent)Petra BrandtPetra Brandt (3 patents)Stefan SilberStefan Silber (54 patents)Kathrin LehmannKathrin Lehmann (22 patents)Christoph Batz-SohnChristoph Batz-Sohn (42 patents)Eberhard EsselbornEberhard Esselborn (36 patents)Steffen HasenzahlSteffen Hasenzahl (23 patents)Thomas DietzThomas Dietz (17 patents)Sascha OestreichSascha Oestreich (13 patents)Arno KnebelkampArno Knebelkamp (9 patents)Klaus JenniKlaus Jenni (6 patents)Christian PsiorzChristian Psiorz (5 patents)Ellen WallhornEllen Wallhorn (4 patents)Angela RüttgerodtAngela Rüttgerodt (3 patents)Ralf MathiakRalf Mathiak (3 patents)Hans-Leo KarminskiHans-Leo Karminski (3 patents)Cornelia SchröterCornelia Schröter (2 patents)Christoph Batz-sohnChristoph Batz-sohn (0 patent)Thomas DietzThomas Dietz (0 patent)Steffen HasenzahlSteffen Hasenzahl (0 patent)Angela RuettgerodtAngela Ruettgerodt (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Goldschmidt Gmbh (2 from 47 patents)

2. Th. Goldschmidt Ag (1 from 331 patents)

3. Evonik Degussa Gmbh (1,242 patents)

4. Evonik Goldschmidt Corporation (80 patents)


3 patents:

1. 7399487 - High-concentration aqueous dispersions comprising hydrophilic microfine metal oxide particles and dispersion auxiliaries

2. 7118619 - Use of silicone resins as dispersants

3. 6235813 - Dispersants for preparing aqueous pigment pastes

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as of
12/7/2025
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