KE

Kenneth A. Epstein

3M: 86 patents #43 of 11,543Top 1%
📍 Okabena, MN: #8 of 412 inventorsTop 2%
🗺 Minnesota: #274 of 52,454 inventorsTop 1%
Overall (All Time): #18,499 of 4,157,543Top 1%
88
Patents All Time

Issued Patents All Time

Showing 76–88 of 88 patents

Patent #TitleCo-InventorsDate
6576887 Light guide for use with backlit display Leland R. Whitney, Gary T. Boyd, Keith M. Kotchick, Sanford Cobb, Jr., Philip E. Watson +2 more 2003-06-10
6560026 Optical film with variable angle prisms Mark E. Gardiner, Sanford Cobb, Jr., Wade D. Kretman 2003-05-06
6508560 Display apparatus with corrosion-resistant light directing film Timothy J. Gardner 2003-01-21
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
6264336 Display apparatus with corrosion-resistant light directing film Robert J. Fleming, Timothy J. Gardner, Christopher S. Lyons, Stephen P. Maki, Mark D. Nachbor 2001-07-24
6139924 Chiral liquid crystal compounds having a fluorinated terminal portion Michael P. Keyes, Marc D. Radcliffe, Steven J. Martin, Daniel C. Snustad 2000-10-31
5976686 Diffuse reflective articles Scott R. Kaytor, John Christopher Harvey, Stephen J. Pojar, Neal T. Strand, Clinton P. Waller, Jr. +2 more 1999-11-02
5894539 Line light source having light pipe with rectangular cross-section 1999-04-13
5608550 Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector Robert Wenz 1997-03-04
5417883 Process for controlling layer spacing in mixtures of smectic liquid crystal compounds Michael P. Keyes, Marc D. Radcliffe, Daniel C. Snustad 1995-05-23