Growing community of inventors

Indersdorf, Germany

Hagen Friedrich

Average Co-Inventor Count = 5.14

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 = 31

Hagen FriedrichJoachim Engelmann (3 patents)Hagen FriedrichHarald Starken (2 patents)Hagen FriedrichKurt Lieb (2 patents)Hagen FriedrichMario Pieh (2 patents)Hagen FriedrichAlexander Frick (2 patents)Hagen FriedrichThomas Quellmalz (2 patents)Hagen FriedrichAndreas Berger (2 patents)Hagen FriedrichPeter Andreas Gratzl (1 patent)Hagen FriedrichHagen Friedrich (3 patents)Joachim EngelmannJoachim Engelmann (3 patents)Harald StarkenHarald Starken (5 patents)Kurt LiebKurt Lieb (5 patents)Mario PiehMario Pieh (4 patents)Alexander FrickAlexander Frick (3 patents)Thomas QuellmalzThomas Quellmalz (2 patents)Andreas BergerAndreas Berger (2 patents)Peter Andreas GratzlPeter Andreas Gratzl (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Valeo Gmbh & Co. Scherheitssysteme (2 from 2 patents)

2. Valeo Deutschland Gmbh & Co. Sicherheitssysteme (1 from 2 patents)


3 patents:

1. 6810763 - Arrangement for electrically locking the steering shaft of a steering device

2. 6400041 - Device for interlocking the steering column of an automotive steering mechanism

3. 6354118 - Arrangement for electrically locking the steering shaft of a motor vehicle steering device

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12/20/2025
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