Growing community of inventors

Langenselbold, Germany

Volker Häfner

Average Co-Inventor Count = 4.00

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 = 2

Volker Häfner ↔ Harald Heinzel (1 patent)Volker Häfner ↔ Alexander Möller (1 patent)Volker Häfner ↔ Hans-Albrecht Hasseberg (1 patent)Volker Häfner ↔ Hans-Albrecht Hasseberg (0 patent)Volker HäfnerVolker Häfner (1 patent)Harald HeinzelHarald Heinzel (10 patents)Alexander MöllerAlexander Möller (7 patents)Hans-Albrecht HassebergHans-Albrecht Hasseberg (4 patents)Hans-Albrecht HassebergHans-Albrecht Hasseberg (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Degussa Aktiengesellschaft (1 from 1,678 patents)

2. Evonik Degussa Gmbh (1,242 patents)


1 patent:

1. 7148379 - Preparation of 2-hydroxy-4-methylthiobutyric acid

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as of
12/5/2025
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