Growing community of inventors

Mannheim, Germany

Hans Helfrich

Average Co-Inventor Count = 3.00

ph-index = 2

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 = 53

Hans HelfrichHermann Landgraf (2 patents)Hans HelfrichTilman Phleps (1 patent)Hans HelfrichJosef Hain (1 patent)Hans HelfrichHans Helfrich (2 patents)Hermann LandgrafHermann Landgraf (16 patents)Tilman PhlepsTilman Phleps (15 patents)Josef HainJosef Hain (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Siemens Aktiengesellschaft (2 from 30,034 patents)


2 patents:

1. 5423231 - Foot control mechanism for a dental apparatus

2. D342720 - Foot switch

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12/15/2025
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