Growing community of inventors

Munich, Georgia

Siegfried Happrich

Average Co-Inventor Count = 3.00

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 = 6

Siegfried Happrich ↔ Maria Regina Mönnig (1 patent)Siegfried Happrich ↔ Armin Fröhlich (1 patent)Siegfried HapprichSiegfried Happrich (1 patent)Maria Regina MönnigMaria Regina Mönnig (1 patent)Armin FröhlichArmin Fröhlich (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Rheinkalk Gmbh & Co. Kg (1 from 2 patents)


1 patent:

1. 6296820 - Method for the reduction of NOX emissions

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as of
12/12/2025
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