Growing community of inventors

Solingen, Germany

Norbert Griewenka

Average Co-Inventor Count = 1.00

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 GriewenkaNorbert Griewenka (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Keiper Seating Mechanisms Co., Ltd. (1 from 32 patents)

2. Johnson Controls Metals & Mechanisms Gmbh & Co. Kg (1 from 5 patents)

3. Adient Luxembourg Holding S.a.r.l. (96 patents)


2 patents:

1. 11187302 - Reduction gear and gear motor

2. 9512875 - Bearing unit

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12/14/2025
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