Growing community of inventors

Munich, Germany

Karl U Stein

Average Co-Inventor Count = 1.14

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 = 27

Karl U SteinFritz Cammerer (1 patent)Karl U SteinKarl U Stein (4 patents)Fritz CammererFritz Cammerer (2 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Siemens Aktiengesellschaft (4 from 30,066 patents)


4 patents:

1. 5071491 - Frame for solar cell devices

2. 4320302 - Method for the automatic or semiautomatic distance measurement and

3. 4290120 - Circuit arrangement for reading out and regenerating items of

4. 4172279 - Integrated current supply circuits

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as of
1/18/2026
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