DB

David Blackford

TC Tsi Group Co.: 2 patents #1 of 7Top 15%
📍 White Bear Lake, MN: #2 of 56 inventorsTop 4%
🗺 Minnesota: #240 of 2,841 inventorsTop 9%
Overall (1994): #36,370 of 165,921Top 25%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5374396 Syringe injection system for measuring non-volatile residue in solvents Thomas A. Kerrick, David S. Ensor, Elizabeth A. Hill 1994-12-20
5351523 Apparatus and process for determining filter efficiency in removing colloidal suspensions Thomas A. Kerrick, Georg Schurmann, Kevin T. Pate 1994-10-04