Growing community of inventors

Aachen, Germany

Christian Stiefel

Average Co-Inventor Count = 2.29

ph-index = 3

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 = 20

Christian StiefelFritz Frederich (2 patents)Christian StiefelHarry Jansen (1 patent)Christian StiefelGino Marsella (1 patent)Christian StiefelJosef Friedrichs (1 patent)Christian StiefelHorst Kahle (1 patent)Christian StiefelChristian Stiefel (4 patents)Fritz FrederichFritz Frederich (3 patents)Harry JansenHarry Jansen (3 patents)Gino MarsellaGino Marsella (2 patents)Josef FriedrichsJosef Friedrichs (2 patents)Horst KahleHorst Kahle (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ringfeder Gmbh (2 from 12 patents)

2. Waggonfabrik Uerdingen A.g. (2 from 7 patents)


4 patents:

1. 4428565 - Arrangement for resilient absorption of forces

2. 4260142 - Arrangement for resilient absorption of forces

3. 4164990 - Passenger evacuation apparatus

4. 3946974 - Railway switch construction for suspended railroad using two-runway-rail

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as of
12/19/2025
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