Growing community of inventors

Delmenhorst, Germany

Heiko Janssen

Average Co-Inventor Count = 4.00

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 = 2

Heiko JanssenSiegfried Schmees (2 patents)Heiko JanssenWolfgang Grimm (2 patents)Heiko JanssenWerner Lepper (1 patent)Heiko JanssenWerner Kohl (1 patent)Heiko JanssenHeiko Janssen (2 patents)Siegfried SchmeesSiegfried Schmees (6 patents)Wolfgang GrimmWolfgang Grimm (2 patents)Werner LepperWerner Lepper (3 patents)Werner KohlWerner Kohl (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hella Kg Hueck and Co. (2 from 150 patents)


2 patents:

1. 5162702 - Flashing light warning apparatus

2. 5162703 - Flashing light warning apparatus

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as of
1/19/2026
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