DK

David Kolstad

PM Porous Media: 1 patents #21 of 35Top 60%
📍 Mahtomedi, MN: #135 of 255 inventorsTop 55%
🗺 Minnesota: #23,881 of 52,454 inventorsTop 50%
Overall (All Time): #2,148,134 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7396383 Membrane-based reservoir dryer John H. Burban, Michael R. Spearman, Craig J. Cuta 2008-07-08
6478953 Oil filter and dehydrator Michael R. Spearman, John H. Burban, Craig J. Cuta, Mathews Thundyil, Majid Zia 2002-11-12