Pieter Willem Vonk

UB Unichema Chemie B.V.: 1 patents #2 of 17Top 15%

📍 Oostzaan, NL: #1 of 4 inventorsTop 25%

Overall (1997): #92,201 of 185,788Top 50%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5691290	Cleaning composition	Anette Heymann	1997-11-25