DH

David L. Hofeldt

3M: 2 patents #189 of 989Top 20%
📍 Oakdale, MN: #6 of 40 inventorsTop 15%
🗺 Minnesota: #1,027 of 5,843 inventorsTop 20%
Overall (2011): #105,465 of 364,097Top 30%
2
Patents 2011

Issued Patents 2011

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7969560 Optical property sensor Gregory D. Kostuch 2011-06-28
7957000 Web inspection calibration system and related methods Derek H. Justice, John A. Ramthun, Catherine P. Tarnowski, Wenyuan Xu 2011-06-07