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David L. Wortman
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Stillwater, MN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Display incorporating reflective polarizer
Patent number
7,852,560
Issue date
Dec 14, 2010
3M Innovative Properties Company
Andrew J. Ouderkirk
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
High efficiency optical devices
Patent number
7,833,593
Issue date
Nov 16, 2010
3M Innovative Properties Company
Andrew J. Ouderkirk
B32 - LAYERED PRODUCTS
Information
Patent Grant
Display having a reflective polarizer
Patent number
7,423,708
Issue date
Sep 9, 2008
3M Innovative Properties Company
Michael F. Weber
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Grant
High efficiency optical devices
Patent number
7,147,903
Issue date
Dec 12, 2006
3M Innovative Properties Company
Andrew J. Ouderkirk
G02 - OPTICS
Information
Patent Grant
Brightness enhancing reflective polarizer
Patent number
7,038,745
Issue date
May 2, 2006
3M Innovative Properties Company
Michael F. Weber
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Grant
Optical devices using reflecting polarizing materials
Patent number
6,934,082
Issue date
Aug 23, 2005
3M Innovative Properties Company
Richard C. Allen
G02 - OPTICS
Information
Patent Grant
High efficiency optical devices
Patent number
6,924,014
Issue date
Aug 2, 2005
3MInnovative Properties Company
Andrew J. Ouderkirk
G02 - OPTICS
Information
Patent Grant
Backlight system with multilayer optical film reflector
Patent number
6,905,220
Issue date
Jun 14, 2005
3M Innovative Properties Company
David L. Wortman
G02 - OPTICS
Information
Patent Grant
Transflective displays with reflective polarizing transflector
Patent number
6,888,675
Issue date
May 3, 2005
3M Innovative Properties Company
Andrew J. Ouderkirk
G02 - OPTICS
Information
Patent Grant
High efficiency optical devices
Patent number
6,641,883
Issue date
Nov 4, 2003
3M Innovative Properties Company
Michael F. Weber
G02 - OPTICS
Information
Patent Grant
Reflective polarizer having improved properties and optical display...
Patent number
6,543,153
Issue date
Apr 8, 2003
3M Innovative Properties Company
Michael F. Weber
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Grant
Optical devices using reflecting polarizing materials
Patent number
6,515,785
Issue date
Feb 4, 2003
3M Innovative Properties Company
Sanford Cobb
G02 - OPTICS
Information
Patent Grant
Lightguide having a directly secured reflector and method of making...
Patent number
6,447,135
Issue date
Sep 10, 2002
3M Innovative Properties Company
David L. Wortman
G02 - OPTICS
Information
Patent Grant
Transflective displays with reflective polarizing transflector
Patent number
6,262,842
Issue date
Jul 17, 2001
3M Innovative Properties Company
Andrew J. Ouderkirk
B32 - LAYERED PRODUCTS
Information
Patent Grant
High efficiency optical devices
Patent number
6,210,785
Issue date
Apr 3, 2001
3M Innovative Properties Company
Michael F. Weber
B32 - LAYERED PRODUCTS
Information
Patent Grant
Transflective displays with reflective polarizing transflector
Patent number
6,124,971
Issue date
Sep 26, 2000
3M Innovative Properties Company
Andrew J. Ouderkirk
B32 - LAYERED PRODUCTS
Information
Patent Grant
Light fixture having a multilayer polymeric film
Patent number
6,101,032
Issue date
Aug 8, 2000
3M Innovative Properties Company
David L. Wortman
G02 - OPTICS
Information
Patent Grant
Luminance control film
Patent number
6,091,547
Issue date
Jul 18, 2000
3M Innovative Properties Company
Mark Edward Gardiner
G02 - OPTICS
Information
Patent Grant
High efficiency optical devices
Patent number
6,080,467
Issue date
Jun 27, 2000
3M Innovative Properties Company
Michael F. Weber
B32 - LAYERED PRODUCTS
Information
Patent Grant
Display with reflective polarizer and randomizing cavity
Patent number
6,025,897
Issue date
Feb 15, 2000
3M Innovative Properties Co.
Michael F. Weber
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Diffuse reflectors
Patent number
6,018,419
Issue date
Jan 25, 2000
3M Intellectual Properties Company
Sanford Cobb
G02 - OPTICS
Information
Patent Grant
Reflective polarizer display
Patent number
5,828,488
Issue date
Oct 27, 1998
Minnesota Mining and Manufacturing Co.
Andrew J. Ouderkirk
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Diffusely reflecting multilayer polarizers and mirrors
Patent number
5,825,542
Issue date
Oct 20, 1998
Minnesota Mining and Manufacturing Company
Sanford Cobb
G02 - OPTICS
Information
Patent Grant
Light directing film having variable height structured surface and...
Patent number
5,771,328
Issue date
Jun 23, 1998
Minnesota Mining and Manufacturing Company
David L. Wortman
G02 - OPTICS
Information
Patent Grant
Displacing an optical lighting film's linear array of grooves to fa...
Patent number
5,363,470
Issue date
Nov 8, 1994
Minnesota Mining and Manufacturing Company
David L. Wortman
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Optical traffic preemption detector
Patent number
5,202,683
Issue date
Apr 13, 1993
Minnesota Mining and Manufacturing Company
Steven M. Hamer
G08 - SIGNALLING
Information
Patent Grant
Light fixture for externally illuminated sign
Patent number
5,095,415
Issue date
Mar 10, 1992
Minnesota Mining and Manufacturing Company
Harry B. Anderson
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
High Efficiency Optical Devices
Publication number
20070122641
Publication date
May 31, 2007
3M Innovative Properties Company
Andrew J. Ouderkirk
G02 - OPTICS
Information
Patent Application
HIGH EFFICIENCY OPTICAL DEVICES
Publication number
20070092728
Publication date
Apr 26, 2007
3M Innovative Properties Company
Andrew J. Ouderkirk
G02 - OPTICS
Information
Patent Application
DISPLAY HAVING A REFLECTIVE POLARIZER
Publication number
20050270439
Publication date
Dec 8, 2005
3M Innovative Properties Company
Michael F. Weber
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
High efficiency optical devices
Publication number
20050260384
Publication date
Nov 24, 2005
3M Innovative Properties Company
Andrew J. Ouderkirk
G02 - OPTICS
Information
Patent Application
Optical devices using reflecting polarizing materials
Publication number
20050002098
Publication date
Jan 6, 2005
3M Innovative Properties Company
Richard C. Allen
G02 - OPTICS
Information
Patent Application
High efficiency optical devices
Publication number
20040175552
Publication date
Sep 9, 2004
Andrew J. Ouderkirk
G02 - OPTICS
Information
Patent Application
Brightness enhancing reflective polarizer
Publication number
20030164914
Publication date
Sep 4, 2003
3M Innovative Properties Company
Michael F. Weber
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Backlight system with multilayer optical film reflector
Publication number
20020141194
Publication date
Oct 3, 2002
3M Innovative Properties Company
David L. Wortman
B32 - LAYERED PRODUCTS
Information
Patent Application
Optical devices using reflecting polarizing materials
Publication number
20010036013
Publication date
Nov 1, 2001
3M Innovative Properties Company
Richard C. Allen
G02 - OPTICS
Information
Patent Application
High efficiency optical devices
Publication number
20010021445
Publication date
Sep 13, 2001
3M Innovative Properties Company
Michael F. Weber
B32 - LAYERED PRODUCTS
Information
Patent Application
Transflective displays with reflective polarizing trasflector
Publication number
20010008464
Publication date
Jul 19, 2001
3M Innovative Properties Company
Andrew J. Ouderkirk
B32 - LAYERED PRODUCTS