Growing community of inventors

Lappersdorf, Germany

Norbert Haefner

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

Norbert Haefner ↔ Stefan Groetsch (1 patent)Norbert Haefner ↔ Ulrich Frei (1 patent)Norbert Haefner ↔ Kurt-Juergen Lang (1 patent)Norbert HaefnerNorbert Haefner (1 patent)Stefan GroetschStefan Groetsch (34 patents)Ulrich FreiUlrich Frei (8 patents)Kurt-Juergen LangKurt-Juergen Lang (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Osram Opto Semiconductors Gmbh (1 from 1,806 patents)


1 patent:

1. 10147683 - Method and apparatus that processes an optoelectronic component

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12/20/2025
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