Growing community of inventors

Hanau, Germany

Ann Gray

Average Co-Inventor Count = 4.29

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 = 114

Ann Gray ↔ Heike Riedemann (2 patents)Ann Gray ↔ Jürgen Meyer (1 patent)Ann Gray ↔ Kai Schumacher (1 patent)Ann Gray ↔ Steffen Hasenzahl (1 patent)Ann Gray ↔ Ralph Hofmann (1 patent)Ann Gray ↔ Josef Piroth (1 patent)Ann Gray ↔ Thomas P Riedemann (1 patent)Ann Gray ↔ Holger Pitsch (1 patent)Ann Gray ↔ Margarete Drechsler (1 patent)Ann Gray ↔ Frank Dieter Huenig (1 patent)Ann Gray ↔ Thomas Riedemann (0 patent)Ann Gray ↔ Steffen Hasenzahl (0 patent)Ann GrayAnn Gray (3 patents)Heike RiedemannHeike Riedemann (7 patents)Jürgen MeyerJürgen Meyer (43 patents)Kai SchumacherKai Schumacher (34 patents)Steffen HasenzahlSteffen Hasenzahl (23 patents)Ralph HofmannRalph Hofmann (5 patents)Josef PirothJosef Piroth (4 patents)Thomas P RiedemannThomas P Riedemann (3 patents)Holger PitschHolger Pitsch (2 patents)Margarete DrechslerMargarete Drechsler (1 patent)Frank Dieter HuenigFrank Dieter Huenig (1 patent)Thomas RiedemannThomas Riedemann (0 patent)Steffen HasenzahlSteffen Hasenzahl (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 from 1,242 patents)

3. Evonik Degussa Gmeh (1 from 1 patent)


3 patents:

1. 8377994 - Use of roll compacted pyrogenically produced silicon dioxide in pharmaceutical compositions

2. 8333914 - Dry liquids, and processes for their preparation

3. 7255735 - Surface-modified silicon dioxide-titanium dioxide mixed oxides

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as of
12/27/2025
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