Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Norman E. Gehrke

3M: 2 patents #5,326 of 11,543Top 50%
Hutchinson, MN: #72 of 175 inventorsTop 45%
Minnesota: #23,881 of 52,454 inventorsTop 50%
Overall (All Time): #2,269,534 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5628827 Non-recirculating, die supplied doctored roll coater with solvent addition Robert P. McCollam, Karl J. Warren, Mark D. Larson, George D. Kostuch, Thomas W. Braid 1997-05-13
5620514 Differential-speed gravure coating of magnetizable layers in the manufacture of magnetic recording media John D. Munter, Donald M. Lewis, Joseph Hung Lam, Kevin K. Kuck, Michael J. Brost 1997-04-15