Growing community of inventors

Vancouver, Canada

John Joustra

Average Co-Inventor Count = 2.00

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 = 8

John JoustraStuart A Gairns (1 patent)John JoustraJohn Joustra (1 patent)Stuart A GairnsStuart A Gairns (3 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Noram Engineering and Constructors Ltd. (1 from 21 patents)


1 patent:

1. 5890531 - Apparatus for the self-cleaning of process tubes

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as of
12/30/2025
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