DF

David G. Freier

3M: 39 patents #220 of 11,543Top 2%
Overall (All Time): #81,743 of 4,157,543Top 2%
39
Patents All Time

Issued Patents All Time

Showing 25 most recent of 39 patents

Patent #TitleCo-InventorsDate
12429641 Organic light emitting diode display with color-correction component having different color mixing weights Nicholas C. Erickson, Robert L. Brott, Bing Hao, David A. Rosen, Stephen M. Menke +14 more 2025-09-30
12007593 Organic light emitting diode with color-correction for maximum white-point color shift Nicholas C. Erickson, Robert L. Brott, Bing Hao, David A. Rosen, Stephen M. Menke +14 more 2024-06-11
10991765 Optical stack for improved color uniformity in OLED display Robert L. Brott, Justin P. Meyer 2021-04-27
10756306 Nanostructured article Nicholas C. Erickson, Moses M. David, Xiaoguang Sun, Manoj Nirmal, Haeen Sykora +8 more 2020-08-25
10566391 OLED display with improved color uniformity Robert L. Brott, Justin P. Meyer 2020-02-18
9976714 Luminaire for crosswalk, method for making, and method for controlling Karl J. L. Geisler, Glendon D. Kappel, Mark G. Mathews, Nicholas G. Amell, Scott E. Simons 2018-05-22
9791128 Curved light duct extraction Vadim N. Savvateev, Thomas R. Corrigan 2017-10-17
9683718 Light duct elbow for ducted illumination Karl J. L. Geisler, Thomas R. Corrigan 2017-06-20
9551827 Hollow light duct bend Steven H. Kong 2017-01-24
9476554 Rectangular light duct extraction Vadim N. Savvateev, Thomas R. Corrigan 2016-10-25
9464773 Illuminated light duct joint Karl J. L. Geisler 2016-10-11
9360676 Light duct tee splitter Thomas R. Corrigan 2016-06-07
9353930 Light duct tee extractor Thomas R. Corrigan 2016-05-31
9335015 Off-axis cassegrain solar collector Timothy L. Quinn, Thomas R. Corrigan, Byron E. Trotter 2016-05-10
D752773 Bollard luminaire window Thomas R. Corrigan, Karl J. L. Geisler, Glendon D. Kappel 2016-03-29
9222650 Switchable light-duct extraction Rolf W. Biernath, Thomas R. Hoffend 2015-12-29
9091408 Recycling backlights with semi-specular components Michael F. Weber, Timothy J. Nevitt, John A. Wheatley, Rolf W. Biernath, Gilles J. Benoit +3 more 2015-07-28
9039245 Energy efficient sign Michael A. Meis, Patrick R. Fleming 2015-05-26
9028108 Collimating light injectors for edge-lit backlights Thomas R. Hoffend, Rolf W. Biernath, Anthony J. Piekarczyk, Michael A. Meis 2015-05-12
8926159 Thin hollow backlights with beneficial design characteristics Timothy J. Nevitt, Timothy J. Hebrink, Michael F. Weber, Rolf W. Biernath, John A. Wheatley +3 more 2015-01-06
8848132 Hollow backlight with structured films Mark B. O'Neill, Shandon Dee Hart, Kenneth A. Epstein, David J. Lamb 2014-09-30
8801207 Light directing sign substrate Michael A. Meis, Patrick R. Fleming, Ronald S. Steelman 2014-08-12
8794809 Light injection coupler for coupling light guides David J. Lundin, Kenneth A. Epstein, Scott D. Gullicks 2014-08-05
8743462 Concentrating daylight collector Thomas R. Corrigan 2014-06-03
8740442 Backlight and display system using same Michael F. Weber, Timothy J. Hebrink, Timothy J. Nevitt, John A. Wheatley, Craig R. Schardt +7 more 2014-06-03