Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7142767 | Scratch-resistant light directing films | — | 2006-11-28 |
| 7046905 | Blacklight with structured surfaces | Sanford Cobb, Jr., Wade D. Kretman | 2006-05-16 |
| 6845212 | Optical element having programmed optical structures | Sanford Cobb, Jr., Kenneth A. Epstein, Wade D. Kretman | 2005-01-18 |
| 6707611 | Optical film with variable angle prisms | Sanford Cobb, Jr., Kenneth A. Epstein, Wade D. Kretman | 2004-03-16 |
| 6576887 | Light guide for use with backlit display | Leland R. Whitney, Gary T. Boyd, Keith M. Kotchick, Kenneth A. Epstein, Sanford Cobb, Jr. +2 more | 2003-06-10 |
| 6560026 | Optical film with variable angle prisms | Sanford Cobb, Jr., Kenneth A. Epstein, Wade D. Kretman | 2003-05-06 |
| 6447135 | Lightguide having a directly secured reflector and method of making the same | David L. Wortman, Sanford Cobb, Jr., Kenneth A. Epstein, Wade D. Kretman | 2002-09-10 |
| 6356391 | Optical film with variable angle prisms | Sanford Cobb, Jr., Kenneth A. Epstein, Wade D. Kretman | 2002-03-12 |
| 6101032 | Light fixture having a multilayer polymeric film | David L. Wortman, Andrew J. Ouderkirk, James M. Jonza, Michael F. Weber | 2000-08-08 |
| 6091547 | Luminance control film | Mark B. O'Neill, David L. Wortman | 2000-07-18 |
| 5959774 | Raised structure retroreflective article | Gerald M. Benson, Kenneth L. Smith, John C. Kelliher | 1999-09-28 |
| 5946134 | Raised structure retroreflective article | Gerald M. Benson, Kenneth L. Smith, John C. Kelliher | 1999-08-31 |
| 5919551 | Variable pitch structured optical film | Sanford Cobb, Jr., Keith M. Kotchick, Kazuhiko Toyooka, William A. Hibbard | 1999-07-06 |
| 5914812 | Directly machined raised structure retroreflective cube corner article and method of manufacture | Gerald M. Benson, Kenneth L. Smith, John C. Kelliher | 1999-06-22 |
| 5771328 | Light directing film having variable height structured surface and light directing article constructed therefrom | David L. Wortman, Sanford Cobb, Jr. | 1998-06-23 |
| 5696627 | Directly machined raised structure retroreflective cube corner article and method of manufacture | Gerald M. Benson, Kenneth L. Smith, John C. Kelliher | 1997-12-09 |
| 4938563 | High efficiency cube corner retroflective material | John C. Nelson, Roger H. Appeldorn, Timothy L. Hoopman | 1990-07-03 |
| 4775219 | Cube-corner retroreflective articles having tailored divergence profiles | Roger H. Appeldorn, John C. Nelson, Timothy L. Hoopman | 1988-10-04 |
| 4456375 | Optical disc measurement by refraction | David W. Kuntz | 1984-06-26 |
| 4341469 | Laser shadowgraph | David W. Kuntz | 1982-07-27 |