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Hattingen, Germany

Wolfgang Zerna

Average Co-Inventor Count = 3.00

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 = 1

Wolfgang ZernaWilfried Krabbe (2 patents)Wolfgang ZernaHans Schafer (2 patents)Wolfgang ZernaWolfgang Zerna (2 patents)Wilfried KrabbeWilfried Krabbe (6 patents)Hans SchaferHans Schafer (4 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Philipp Holzmann Aktiengesellschaft (2 from 17 patents)


2 patents:

1. 4434591 - Component useful in producing a cooling tower

2. 4255366 - Process of producing a cooling tower

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