KE

Kenneth A. Epstein

3M: 4 patents #37 of 1,133Top 4%
📍 Okabena, MN: #3 of 35 inventorsTop 9%
🗺 Minnesota: #150 of 4,549 inventorsTop 4%
Overall (2002): #14,580 of 266,432Top 6%
4
Patents 2002

Issued Patents 2002

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6447135 Lightguide having a directly secured reflector and method of making the same David L. Wortman, Sanford Cobb, Jr., Mark E. Gardiner, Wade D. Kretman 2002-09-10
6379016 Light guide with extraction structures Gary T. Boyd, Richard A. Miller, Leland R. Whitney 2002-04-30
6357880 Display apparatus with corrosion-resistant light directing film Robert J. Fleming, Timothy J. Gardner, Christopher S. Lyons, Stephen P. Maki, Mark D. Nachbor 2002-03-19
6356391 Optical film with variable angle prisms Mark E. Gardiner, Sanford Cobb, Jr., Wade D. Kretman 2002-03-12