Growing community of inventors

Amsterdam, Netherlands

Henk Dirkzwager

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 = 0

Henk Dirkzwager ↔ Arend Hoek (1 patent)Henk Dirkzwager ↔ Robert Martijn Van Hardeveld (1 patent)Henk Dirkzwager ↔ Peter William Lednor (1 patent)Henk Dirkzwager ↔ Joannes Ignatius Geijsel (1 patent)Henk DirkzwagerHenk Dirkzwager (1 patent)Arend HoekArend Hoek (35 patents)Robert Martijn Van HardeveldRobert Martijn Van Hardeveld (21 patents)Peter William LednorPeter William Lednor (15 patents)Joannes Ignatius GeijselJoannes Ignatius Geijsel (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Shell Oil Comapny (1 from 7,646 patents)


1 patent:

1. 7674940 - Process for the preparation of detergent compounds

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12/31/2025
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