Growing community of inventors

Beverwijk, Netherlands

Johannes Greefkes

Average Co-Inventor Count = 1.50

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 = 3

Johannes GreefkesAdrianus J Den Hartog (1 patent)Johannes GreefkesBernard Campenon (1 patent)Johannes GreefkesJohannes Greefkes (3 patents)Adrianus J Den HartogAdrianus J Den Hartog (1 patent)Bernard CampenonBernard Campenon (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hoogovens Groep B.v. (1 from 95 patents)

2. Hoogovens Staal B.v. (1 from 19 patents)

3. Compagnie Europeenne De Dezingage (1 from 1 patent)


3 patents:

1. 5980725 - Method for upgrading waste material comprising sheet metal with a zinc

2. 5609841 - Method and apparatus for treating a flow of gas containing oxidized

3. 5225176 - Process for the removal of sulfur oxide constituents from a waste gas

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as of
12/18/2025
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