Growing community of inventors

Amsterdam, Netherlands

Gerhard D Van Wijngaarden

Average Co-Inventor Count = 2.86

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 = 27

Gerhard D Van Wijngaarden ↔ Jan J Bleeker (1 patent)Gerhard D Van Wijngaarden ↔ Wilhelmus J Krijnen (1 patent)Gerhard D Van Wijngaarden ↔ Henricus M Brons (1 patent)Gerhard D Van Wijngaarden ↔ Madeline G Van Grieken (1 patent)Gerhard D Van Wijngaarden ↔ Martin Booth (1 patent)Gerhard D Van WijngaardenGerhard D Van Wijngaarden (2 patents)Jan J BleekerJan J Bleeker (5 patents)Wilhelmus J KrijnenWilhelmus J Krijnen (3 patents)Henricus M BronsHenricus M Brons (2 patents)Madeline G Van GriekenMadeline G Van Grieken (1 patent)Martin BoothMartin Booth (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Shell Oil Comapny (2 from 7,646 patents)


2 patents:

1. 4869837 - Preparation of a basic salt

2. 4539126 - Borated basic metal salt and lubricating oil composition

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
12/21/2025
Loading…