Growing community of inventors

Dortmund, Germany

Stephan Frei

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 = 0

Stephan Frei ↔ Norbert Hees (1 patent)Stephan Frei ↔ Andreas Bendicks (1 patent)Stephan Frei ↔ Marc Wiegand (1 patent)Stephan Frei ↔ Andreas Bendicks (0 patent)Stephan FreiStephan Frei (1 patent)Norbert HeesNorbert Hees (1 patent)Andreas BendicksAndreas Bendicks (1 patent)Marc WiegandMarc Wiegand (1 patent)Andreas BendicksAndreas Bendicks (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Leopold Kostal Gmbh & Co. Kg (1 from 190 patents)

2. Kostal Automobil Elektrik Gmbh & Co. Kg (26 patents)


1 patent:

1. 10673542 - Method for controlling an electrical load by means of pulse width modulation

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12/12/2025
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