Growing community of inventors

Aachen, Germany

Franz Josef Grewe

Average Co-Inventor Count = 6.00

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 = 10

Franz Josef Grewe ↔ Leo Wings (1 patent)Franz Josef Grewe ↔ Oskar Ruhl (1 patent)Franz Josef Grewe ↔ Heinz Rosler (1 patent)Franz Josef Grewe ↔ Egidius Van Wersch (1 patent)Franz Josef Grewe ↔ Klaus Stenke (1 patent)Franz Josef GreweFranz Josef Grewe (1 patent)Leo WingsLeo Wings (4 patents)Oskar RuhlOskar Ruhl (1 patent)Heinz RoslerHeinz Rosler (1 patent)Egidius Van WerschEgidius Van Wersch (1 patent)Klaus StenkeKlaus Stenke (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. U.S. Philips Corporation (1 from 14,087 patents)


1 patent:

1. 4119877 - Electric lamp having a cap plate

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as of
12/31/2025
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