HD

Hendrik A. Dirkse

Shell Oil Compny: 4 patents #842 of 4,423Top 20%
Overall (All Time): #1,267,306 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6830734 Separator apparatus Hubertus Wilhelmus Albertus Dries, Louis Edward Stein 2004-12-14
5282877 Filtration device Phillip E. Unger, Petrus Jacobus Adrianus Tijm 1994-02-01
4961863 Process for the separation of solids from a mixture of solids and fluid Hendrikus E. A. Van Den Akker, Rudi Everts, Jouke J. Woudstra, Peter H. Barnes, Cornelis M. Verheul 1990-10-09
4809886 Apparatus for controlling a flow of granular material Wiecher Derk Evert Steenge, Andrew M. Scott 1989-03-07