Growing community of inventors

Ostfildern, Germany

Frank Birkwald

Average Co-Inventor Count = 2.17

ph-index = 2

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 = 6

Frank BirkwaldAlexander Kiforiuk (2 patents)Frank BirkwaldHubert Heck (1 patent)Frank BirkwaldRalf Eckstein (1 patent)Frank BirkwaldPaul Schwarzhans (1 patent)Frank BirkwaldKai Vohwinkel (1 patent)Frank BirkwaldRoman Bilmayer (1 patent)Frank BirkwaldChristian Ziegler (1 patent)Frank BirkwaldRoger Kollmeier (1 patent)Frank BirkwaldAksel Maier (1 patent)Frank BirkwaldMichael Stange (1 patent)Frank BirkwaldRalf Eckstein (0 patent)Frank BirkwaldFrank Birkwald (4 patents)Alexander KiforiukAlexander Kiforiuk (4 patents)Hubert HeckHubert Heck (9 patents)Ralf EcksteinRalf Eckstein (8 patents)Paul SchwarzhansPaul Schwarzhans (5 patents)Kai VohwinkelKai Vohwinkel (3 patents)Roman BilmayerRoman Bilmayer (2 patents)Christian ZieglerChristian Ziegler (1 patent)Roger KollmeierRoger Kollmeier (1 patent)Aksel MaierAksel Maier (1 patent)Michael StangeMichael Stange (1 patent)Ralf EcksteinRalf Eckstein (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Thyssenkrupp Presta Ag (4 from 419 patents)


4 patents:

1. 9429221 - Steering pinion for a steering system and method for the production thereof

2. 8256314 - Cost-effective steering mechanism

3. 8235165 - Electromechanical power steering system with a ball screw drive

4. 7887069 - Toothed rack or threaded rod

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as of
12/20/2025
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