Growing community of inventors

Frankfurt-am-Main, Germany

Marianne Siebert-Weigel

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 = 0

Marianne Siebert-Weigel ↔ Jurgen Engel (1 patent)Marianne Siebert-Weigel ↔ Bernhard Kutscher (1 patent)Marianne Siebert-Weigel ↔ Gisbert Sponer (1 patent)Marianne Siebert-Weigel ↔ Georg Niebch (1 patent)Marianne Siebert-Weigel ↔ Harald D Borbe-Volmer (1 patent)Marianne Siebert-WeigelMarianne Siebert-Weigel (1 patent)Jurgen EngelJurgen Engel (81 patents)Bernhard KutscherBernhard Kutscher (45 patents)Gisbert SponerGisbert Sponer (28 patents)Georg NiebchGeorg Niebch (2 patents)Harald D Borbe-VolmerHarald D Borbe-Volmer (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Boehringer Mannheim Gmbh (1 from 1,164 patents)


1 patent:

1. 5037828 - Piperazine derivatives, uses thereof and pharmaceutical compositions

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as of
1/2/2026
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