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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KE

Kenneth A. Epstein — 89 Patents

3M: 87 patents #41 of 11,543Top 1%
Okabena, MN: #8 of 412 inventorsTop 2%
Minnesota: #266 of 52,454 inventorsTop 1%
Overall (All Time): #18,310 of 4,157,543Top 1%
89 Patents All Time
Kenneth A. Epstein has been granted 89 US patents while listed as an inventor at 3M. The first was granted in 1995 and the most recent in December 2025. Kenneth A. Epstein ranks #18,310 of 4,157,543 US inventors in our database (top 0.44%). Patent records list Kenneth A. Epstein in Okabena, MN, US.

Patents per Year

Patents granted per year, 1995 to 2025Bar chart with a peak of 9 patents in 2007.peak 91995: 1 patents19951997: 1 patents1999: 2 patents2000: 1 patents20002001: 1 patents2002: 4 patents2003: 4 patents20032004: 2 patents2005: 1 patents2006: 2 patents20062007: 9 patents2008: 9 patents2009: 3 patents20092010: 4 patents2011: 4 patents2012: 2 patents20122013: 4 patents2014: 4 patents2015: 1 patents20152016: 1 patents2017: 4 patents2018: 2 patents20182019: 3 patents2020: 3 patents2021: 3 patents20212022: 3 patents2023: 3 patents2024: 5 patents20242025: 3 patents2025

Issued Patents All Time

Showing 1–25 of 89 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12493208 High transmission light control film Daniel J. Schmidt, Kevin W. Gotrik, Nicholas A. Johnson, Raymond J. Kenney, Caleb T. Nelson 2025-12-09
12372693 High transmission light control film Daniel J. Schmidt, Caleb T. Nelson, Kevin W. Gotrik, Raymond J. Kenney, John A. Wheatley +2 more 2025-07-29
12189150 Light control film with turning film and lenticular diffuser for view enhancement in the horizontal plane Robert M. Emmons, Bryan V. Hunt 2025-01-07
12174407 Light control film Daniel J. Schmidt, Caleb T. Nelson, Kevin W. Gotrik, Raymond J. Kenney, Gary T. Boyd +4 more 2024-12-24 $78,103,000
12164120 Faceted microstructured surface Kristopher J. Derks, Tri D. Pham, David J. Lamb 2024-12-10 $77,480,000
11947135 High transmission light control film Daniel J. Schmidt, Caleb T. Nelson, Kevin W. Gotrik, Raymond J. Kenney, John A. Wheatley +2 more 2024-04-02 $27,990,000
11940689 High transmission light control film Daniel J. Schmidt, Kevin W. Gotrik, Nicholas A. Johnson, Raymond J. Kenney, Caleb T. Nelson 2024-03-26 $87,442,000
11885989 High transmission light control film Daniel J. Schmidt, Caleb T. Nelson, Kevin W. Gotrik, Raymond J. Kenney, John A. Wheatley +2 more 2024-01-30 $25,418,000
11708962 Optical system with switchable diffuser John A. Wheatley, Guanglei Du 2023-07-25 $41,696,000
11585966 Multiplexing backlight with asymmetric turning film Nicholas A. Johnson, Michael E. Lauters, Shannon L. Siefken, Gary T. Boyd 2023-02-21 $25,268,000
11550183 High transmission light control film Daniel J. Schmidt, Kevin W. Gotrik, Nicholas A. Johnson, Raymond J. Kenney, Caleb T. Nelson 2023-01-10 $64,569,000
11448814 Light control film with turning film and lenticular diffuser for view enhancement in the horizontal plane Robert M. Emmons, Nicholas A. Johnson 2022-09-20 $22,303,000
11307333 Asymmetric turning film with top-hat light output distributions Robert M. Emmons 2022-04-19 $33,817,000
11300716 Retroreflecting article including retarder John A. Wheatley, Michael A. McCoy, Tien Yi T. H. Whiting, Guanglei Du, Neeraj Sharma +1 more 2022-04-12 $70,397,000
11187847 Backlight including wide-web turning film and reflective polarizer with quarter-wave retarder Quinn D. Sanford, Matthew B. Johnson, Gary T. Boyd 2021-11-30 $50,159,000
11099314 Light control film with turning film and lenticular diffuser for view enhancement in the horizontal plane Nicholas A. Johnson, Robert M. Emmons 2021-08-24 $71,102,000
10955592 Multiplexing backlight with asymmetric turning film Nicholas A. Johnson, Michael E. Lauters, Shannon L. Siefken, Gary T. Boyd 2021-03-23 $36,357,000
10837622 Collimating step-wedge light guide John A. Wheatley 2020-11-17 $47,687,000
10809445 Light control film for display assemblies Nicholas A. Johnson, Richard V. Pallarino, Michael E. Lauters 2020-10-20 $85,171,000
10732344 Collimating light guide John A. Wheatley, Tao Liu 2020-08-04 $33,653,000
10388230 Temporally multiplexing backlight with asymmetric turning film Nicholas A. Johnson, James M. Hillis, Michael E. Lauters 2019-08-20 $38,364,000
10371350 Asymmetric turning film with multiple light sources Nicholas A. Johnson, Gilles J. Benoit, John A. Wheatley, David Scott Thompson, Michael E. Lauters 2019-08-06 $30,766,000
10288796 Optical film Gary T. Boyd, Robert M. Emmons 2019-05-14 $25,585,000
10114162 Optical film stack with retardance layer having in-plane retardance of greater than 2.0 microns Adam D. Haag, Seo-Hern Lee, Youn Sihn Kim, Myeong-Kyun Kang 2018-10-30 $37,459,000
10031260 Object sensor Scott E. Brigham, Kiran S. Kanukurthy, John C. Schultz, Philip E. Watson 2018-07-24 $40,320,000