Growing community of inventors

Fredriksberg C, Denmark

Johannes Kaulfuss

Average Co-Inventor Count = 2.00

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 = 23

Johannes KaulfussAxel Grell (2 patents)Johannes KaulfussJohannes Kaulfuss (2 patents)Axel GrellAxel Grell (18 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sennheiser Electronic Gmbh & Co Kg (2 from 296 patents)


2 patents:

1. 7940947 - Headphone set

2. 7292703 - Headphones

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as of
12/15/2025
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