Growing community of inventors

Hamburg, Germany

Hans-Dieter Grasshoff

Average Co-Inventor Count = 2.67

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 = 8

Hans-Dieter Grasshoff ↔ Dietrich Pirck (3 patents)Hans-Dieter Grasshoff ↔ Peter Finmans (1 patent)Hans-Dieter Grasshoff ↔ Harald Kohnz (1 patent)Hans-Dieter Grasshoff ↔ Wilfried Weber (1 patent)Hans-Dieter Grasshoff ↔ Dieter Jakubik (1 patent)Hans-Dieter Grasshoff ↔ Tobias Carstensen (1 patent)Hans-Dieter Grasshoff ↔ Dieter Winkler (1 patent)Hans-Dieter GrasshoffHans-Dieter Grasshoff (3 patents)Dietrich PirckDietrich Pirck (10 patents)Peter FinmansPeter Finmans (4 patents)Harald KohnzHarald Kohnz (4 patents)Wilfried WeberWilfried Weber (1 patent)Dieter JakubikDieter Jakubik (1 patent)Tobias CarstensenTobias Carstensen (1 patent)Dieter WinklerDieter Winkler (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Rwe-dea Aktiengesellschaft Fur Mineraloel Und Chemie (2 from 12 patents)

2. Rwe-dea Aktiengesellschaft Fuer Mineraloel Und Chemie (1 from 10 patents)


3 patents:

1. 6245253 - Liquid composition and its use as magneto-rheological liquid

2. 5800731 - Homogeneous electroviscous fluids using aluminum compounds

3. 5474714 - Non-polluting shock absorber and level controller fluids

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as of
12/11/2025
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