Growing community of inventors

Lemgo, Germany

Hans-Joachim Grajetzky

Average Co-Inventor Count = 2.00

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 = 11

Hans-Joachim GrajetzkyKarl-Heinz Holzkämper (1 patent)Hans-Joachim GrajetzkyHeike Schmidtpott (1 patent)Hans-Joachim GrajetzkyHans-Joachim Grajetzky (2 patents)Karl-Heinz HolzkämperKarl-Heinz Holzkämper (1 patent)Heike SchmidtpottHeike Schmidtpott (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Zumtobel Staff Gmbh Co., Kg (2 from 20 patents)


2 patents:

1. 6883940 - Recessed luminaire having a dome-shaped reflector

2. 6702454 - Recessed luminaire having a holder ring for additional components

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as of
12/21/2025
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