Growing community of inventors

Duisburg, Germany

Holger Herrmann

Average Co-Inventor Count = 6.00

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 = 13

Holger Herrmann ↔ Otto Schroers (2 patents)Holger Herrmann ↔ Hartmut Pawel (2 patents)Holger Herrmann ↔ Wolfgang Hoeppner (2 patents)Holger Herrmann ↔ Volker Hartmann (2 patents)Holger Herrmann ↔ Thorsten Buddenberg (2 patents)Holger Herrmann ↔ Wolfgang Höppner (0 patent)Holger HerrmannHolger Herrmann (2 patents)Otto SchroersOtto Schroers (6 patents)Hartmut PawelHartmut Pawel (2 patents)Wolfgang HoeppnerWolfgang Hoeppner (2 patents)Volker HartmannVolker Hartmann (2 patents)Thorsten BuddenbergThorsten Buddenberg (2 patents)Wolfgang HöppnerWolfgang Höppner (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Stockhausen Gmbh & Co Kg (2 from 69 patents)

2. Detlef Hegeman Gmbh & Co. Kg (1 from 1 patent)

3. Detlef Hegemann Gmbh & Co. Kg (1 from 1 patent)

4. Ashland Licensing and Intellectual Property LLC (107 patents)


2 patents:

1. 7811458 - Method for treating aqueous sludge, material so produced and the use thereof

2. 7553423 - Method for treating aqueous sludge, material so produced and the use thereof

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as of
12/18/2025
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