Wortman; David L.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Wortman; David L..The latest application filed is for "high efficiency optical devices".

Company Profile

0.24.11

Wortman; David L. - Stillwater MN
Wortman; David L. - St. Paul MN
Wortman, David L. - Still Water MN
Wortman; David L. - Saint Mary's Point MN

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
High efficiency optical devices Grant 7,833,593 - Ouderkirk , et al. November 16, 2	2010-11-16
Display having a reflective polarizer Grant 7,423,708 - Weber , et al. September 9, 2	2008-09-09
High Efficiency Optical Devices App 20070122641 - Ouderkirk; Andrew J. ; et al.	2007-05-31
High Efficiency Optical Devices App 20070092728 - Ouderkirk; Andrew J. ; et al.	2007-04-26
High efficiency optical devices Grant 7,147,903 - Ouderkirk , et al. December 12, 2	2006-12-12
Brightness enhancing reflective polarizer Grant 7,038,745 - Weber , et al. May 2, 2	2006-05-02
Display Having A Reflective Polarizer App 20050270439 - Weber, Michael F. ; et al.	2005-12-08
High efficiency optical devices App 20050260384 - Ouderkirk, Andrew J. ; et al.	2005-11-24
Optical devices using reflecting polarizing materials Grant 6,934,082 - Allen , et al. August 23, 2	2005-08-23
High efficiency optical devices Grant 6,924,014 - Ouderkirk , et al. August 2, 2	2005-08-02
Backlight system with multilayer optical film reflector Grant 6,905,220 - Wortman , et al. June 14, 2	2005-06-14
Transflective displays with reflective polarizing transflector Grant 6,888,675 - Ouderkirk , et al. May 3, 2	2005-05-03
Optical devices using reflecting polarizing materials App 20050002098 - Allen, Richard C. ; et al.	2005-01-06
High efficiency optical devices App 20040175552 - Ouderkirk, Andrew J. ; et al.	2004-09-09
High efficiency optical devices Grant 6,641,883 - Weber , et al. November 4, 2	2003-11-04
Brightness enhancing reflective polarizer App 20030164914 - Weber, Michael F. ; et al.	2003-09-04
Reflective polarizer having improved properties and optical display with improved reflective polarizer Grant 6,543,153 - Weber , et al. April 8, 2	2003-04-08
Optical devices using reflecting polarizing materials Grant 6,515,785 - Cobb, Jr. , et al. February 4, 2	2003-02-04
Backlight system with multilayer optical film reflector App 20020141194 - Wortman, David L. ; et al.	2002-10-03
Optical devices using reflecting polarizing materials App 20010036013 - Allen, Richard C. ; et al.	2001-11-01
High efficiency optical devices App 20010021445 - Weber, Michael F. ; et al.	2001-09-13
Transflective displays with reflective polarizing trasflector App 20010008464 - Ouderkirk, Andrew J. ; et al.	2001-07-19
Transflective displays with reflective polarizing transflector Grant 6,262,842 - Ouderkirk , et al. July 17, 2	2001-07-17
High efficiency optical devices Grant 6,210,785 - Weber , et al. April 3, 2	2001-04-03
Transflective displays with reflective polarizing transflector Grant 6,124,971 - Ouderkirk , et al. September 26, 2	2000-09-26
Light fixture having a multilayer polymeric film Grant 6,101,032 - Wortman , et al. August 8, 2	2000-08-08
High efficiency optical devices Grant 6,080,467 - Weber , et al. June 27, 2	2000-06-27
Display with reflective polarizer and randomizing cavity Grant 6,025,897 - Weber , et al. February 15, 2	2000-02-15
Diffuse reflectors Grant 6,018,419 - Cobb, Jr. , et al. January 25, 2	2000-01-25
Reflective polarizer display Grant 5,828,488 - Ouderkirk , et al. October 27, 1	1998-10-27
Diffusely reflecting multilayer polarizers and mirrors Grant 5,825,542 - Cobb, Jr. , et al. October 20, 1	1998-10-20
Light directing film having variable height structured surface and light directing article constructed therefrom Grant 5,771,328 - Wortman , et al. June 23, 1	1998-06-23
Displacing an optical lighting film's linear array of grooves to facilitate emission of light Grant 5,363,470 - Wortman November 8, 1	1994-11-08
Optical traffic preemption detector Grant 5,202,683 - Hamer , et al. April 13, 1	1993-04-13
Light fixture for externally illuminated sign Grant 5,095,415 - Anderson , et al. March 10, 1	1992-03-10

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