Growing community of inventors

Herrieden, Germany

Frank Dorrbeck

Average Co-Inventor Count = 5.00

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 = 9

Frank DorrbeckBernd Mehlan (1 patent)Frank DorrbeckJosef Gress (1 patent)Frank DorrbeckRichard Kolbl (1 patent)Frank DorrbeckRudolf Leichs (1 patent)Frank DorrbeckFrank Dorrbeck (1 patent)Bernd MehlanBernd Mehlan (10 patents)Josef GressJosef Gress (6 patents)Richard KolblRichard Kolbl (3 patents)Rudolf LeichsRudolf Leichs (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sielaff Gmbh & Co. Automatenbau Herrieden (1 from 6 patents)


1 patent:

1. 4235351 - Merchandise dispensing device for a vending machine

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12/20/2025
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