Growing community of inventors

Heidelberg, Germany

Norbert Frank

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 = 26

Norbert FrankEberhard Amtmann (2 patents)Norbert FrankGerhard Schilling (2 patents)Norbert FrankGerhard Sauer (2 patents)Norbert FrankLeopold Rang (0 patent)Norbert FrankMorris Koch (0 patent)Norbert FrankHorst Keller (0 patent)Norbert FrankJens Kuhn (0 patent)Norbert FrankUlrich Stolz (0 patent)Norbert FrankVolker Gerwig (0 patent)Norbert FrankNorbert Frank (2 patents)Eberhard AmtmannEberhard Amtmann (8 patents)Gerhard SchillingGerhard Schilling (3 patents)Gerhard SauerGerhard Sauer (3 patents)Leopold RangLeopold Rang (0 patent)Morris KochMorris Koch (0 patent)Horst KellerHorst Keller (0 patent)Jens KuhnJens Kuhn (0 patent)Ulrich StolzUlrich Stolz (0 patent)Volker GerwigVolker Gerwig (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Cancer Research Ventures Limited (2 from 4 patents)

2. Keller Lufttechnik Gmbh + Co. Kg (0 patent)


2 patents:

1. 6444706 - Guanidine derivatives, processes for preparing them and their use as pharmaceutical compositions

2. 6284798 - Guanidine derivatives, methods of preparing them and their use as drugs

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as of
12/17/2025
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