Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Robert D. Hamann — 5 Patents

3M: 5 patents #2,950 of 11,543Top 30%
Eagan, MN: #220 of 891 inventorsTop 25%
Minnesota: #13,707 of 52,454 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Robert D. Hamann has been granted 5 US patents while listed as an inventor at 3M. The first was granted in 1998 and the most recent in December 2024. Robert D. Hamann ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Robert D. Hamann in Eagan, MN, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12168743 Extruded polyurethane surface films Charlie C. Ho, Yongshang Lu, John J. Jaros, Jay M. Jennen, Ryan M. Braun +3 more 2024-12-17 $93,454,000
11567239 Polyurethane layer for a light directing article Bimal V. Thakkar, Jay M. Jennen, Ryan M. Braun, Robert F. Watkins, Joseph D. Rule +2 more 2023-01-31 $73,272,000
10884163 Polyurethane layer for a light directing article Bimal V. Thakkar, Jay M. Jennen, Ryan M. Braun, Robert F. Watkins, Joseph D. Rule +2 more 2021-01-05 $50,204,000
10590303 Thermoplastic polyurethane compositions, articles, and methods thereof Charlie C. Ho, Jeremy P. Gundale, Vijay Rajamani, Ken Egashira, Chia-Hui Lin +1 more 2020-03-17 $38,767,000
5848696 Wrapped material, and method and apparatus for wrapping and unwrapping such material Dennis L. Christ, Timothy D. Bredahl, Michael A. Giefer, Donald R. Peacock, Timothy J. Walker 1998-12-15 $14,533,000