Inventor
VONK DONALD R
US7 patents
⚠️ This page may combine multiple inventors who share the name “VONK DONALD R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HENKEL AG & CO KGAA
5 patentsUS9284460B2Mar 15, 2016
Metal pretreatment composition containing zirconium, copper, and metal chelating agents and related coatings on metal substrates
HENKEL AG & CO KGAA8 citations81
US9580813B2Feb 28, 2017
Metal pretreatment composition containing zirconium, copper, and metal chelating agents and related coatings on metal substrates
HENKEL AG & CO KGAA3 citations70
US12276030B2Apr 15, 2025
Metal pretreatment compositions containing phenalkamine compounds
HENKEL AG & CO KGAA0 citations60
US10094026B2Oct 9, 2018
Metal pretreatment composition containing zirconium, copper, and metal chelating agents and related coatings on metal substrates
HENKEL AG & CO KGAA0 citations49
US11535940B2Dec 27, 2022
Use of an adhesion promoter obtainable as a reaction product of a di- or poly amine with α,β-unsaturated carboxylic acid derivatives for metal surface treatment
HENKEL AG & CO KGAA0 citations47