Growing community of inventors

Utrecht, Netherlands

Onno L Gijzeman

Average Co-Inventor Count = 4.00

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 = 18

Onno L GijzemanJohn Wilhelm Geus (2 patents)Onno L GijzemanEugene G Kuijpers (2 patents)Onno L GijzemanCarolus M Mesters (2 patents)Onno L GijzemanOnno L Gijzeman (2 patents)John Wilhelm GeusJohn Wilhelm Geus (49 patents)Eugene G KuijpersEugene G Kuijpers (6 patents)Carolus M MestersCarolus M Mesters (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Veg-gasinstituut N.v. (2 from 22 patents)


2 patents:

1. 4725573 - Copper-nickel catalyst and process for its production

2. 4657888 - Process for the production of a catalyst

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12/16/2025
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