Growing community of inventors

Lippstadt, Germany

Ralf Spiekermann

Average Co-Inventor Count = 5.00

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

Ralf SpiekermannDmitry Fedosik (1 patent)Ralf SpiekermannRonny Letzin (1 patent)Ralf SpiekermannBernd Giepen (1 patent)Ralf SpiekermannMatthias Knoche (1 patent)Ralf SpiekermannDirk Wundling (0 patent)Ralf SpiekermannRalf Spiekermann (1 patent)Dmitry FedosikDmitry Fedosik (19 patents)Ronny LetzinRonny Letzin (5 patents)Bernd GiepenBernd Giepen (4 patents)Matthias KnocheMatthias Knoche (2 patents)Dirk WundlingDirk Wundling (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hella Kgaa Hueck and Company (1 from 221 patents)

2. Oventrop Gmbh & Co. Kg (12 patents)


1 patent:

1. 9719646 - Headlamp for vehicles

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as of
12/16/2025
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