Growing community of inventors

Halle, Germany

Roger Frach

Average Co-Inventor Count = 4.00

ph-index = 1

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 = 1

Roger Frach ↔ Dietrich Demus (1 patent)Roger Frach ↔ Horst Zaschke (1 patent)Roger Frach ↔ Hans-Joachim Deutscher (1 patent)Roger FrachRoger Frach (1 patent)Dietrich DemusDietrich Demus (30 patents)Horst ZaschkeHorst Zaschke (23 patents)Hans-Joachim DeutscherHans-Joachim Deutscher (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Veb Werk Fuer Fernsehelektronik (1 from 1 patent)


1 patent:

1. 4626375 - Liquid crystalline substances

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as of
1/13/2026
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