Growing community of inventors

Glonn, Germany

Siegfried Schreyer

Average Co-Inventor Count = 1.64

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 = 17

Siegfried SchreyerHelmut Berger (1 patent)Siegfried SchreyerEdmund Creutzmann (1 patent)Siegfried SchreyerRudolf Waechtler (1 patent)Siegfried SchreyerSiegfried Schreyer (3 patents)Helmut BergerHelmut Berger (3 patents)Edmund CreutzmannEdmund Creutzmann (3 patents)Rudolf WaechtlerRudolf Waechtler (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Siemens Aktiengesellschaft (3 from 30,040 patents)


3 patents:

1. 5177502 - Arrangement for detachably fastening modules to a module carrier

2. 5130725 - Apparatus for integrating an optical character generator in a printer

3. 5038172 - Play-free bearing mechanism for photo-conductive drums in printer or

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12/20/2025
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