Growing community of inventors

Munich, Germany

Helmut Grottrup

Average Co-Inventor Count = 1.92

ph-index = 3

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 = 60

Helmut GrottrupThomas Maurer (2 patents)Helmut GrottrupWittich Kaule (1 patent)Helmut GrottrupJoachim Hoppe (1 patent)Helmut GrottrupGerhard Stenzel (1 patent)Helmut GrottrupYahya Haghiri (1 patent)Helmut GrottrupHelmut Grottrup (4 patents)Thomas MaurerThomas Maurer (24 patents)Wittich KauleWittich Kaule (87 patents)Joachim HoppeJoachim Hoppe (50 patents)Gerhard StenzelGerhard Stenzel (47 patents)Yahya HaghiriYahya Haghiri (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Gao Gesellschaft Fur Automation Und Organisation Mbh (3 from 182 patents)

2. Gesellschaft Fur Automation U. Organization Mbh (1 from 1 patent)


4 patents:

1. 4841128 - Circuit unit

2. 4291222 - Method and apparatus for card authentication using display of symbols

3. 4157784 - Safeguard against falsification of securities and the like which is

4. 3946869 - Transparent package

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as of
12/31/2025
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