Growing community of inventors

Opladen, Germany

Helmut Schaffer

Average Co-Inventor Count = 5.83

ph-index = 2

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 = 20

Helmut SchafferHans Frenken (2 patents)Helmut SchafferGunther Koepke (1 patent)Helmut SchafferHans Gref (1 patent)Helmut SchafferRoland Hourticolon (1 patent)Helmut SchafferKarl Voss (1 patent)Helmut SchafferWolfgang Schweicher (1 patent)Helmut SchafferHeinz Bussmann (1 patent)Helmut SchafferGerhard Roth (1 patent)Helmut SchafferWilli Junkersdorf (1 patent)Helmut SchafferHelmut Schaffer (2 patents)Hans FrenkenHans Frenken (16 patents)Gunther KoepkeGunther Koepke (12 patents)Hans GrefHans Gref (8 patents)Roland HourticolonRoland Hourticolon (7 patents)Karl VossKarl Voss (6 patents)Wolfgang SchweicherWolfgang Schweicher (4 patents)Heinz BussmannHeinz Bussmann (1 patent)Gerhard RothGerhard Roth (1 patent)Willi JunkersdorfWilli Junkersdorf (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Agfa-gevaert Ag (2 from 1,473 patents)


2 patents:

1. 4426757 - Web guide roller for use at high speeds and process for producing the

2. 4014491 - Arrangement for adjusting and measuring web tension levels

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as of
12/5/2025
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