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Soemantri Widagdo
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St. Paul, MN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Optical construction and display system incorporating same
Patent number
11,435,616
Issue date
Sep 6, 2022
3M Innovative Properties Company
Encai Hao
G02 - OPTICS
Information
Patent Grant
Optical construction and display system incorporating same
Patent number
10,649,274
Issue date
May 12, 2020
3M Innovative Properties Company
Encai Hao
G02 - OPTICS
Information
Patent Grant
Light source and optical article including viscoelastic lightguide...
Patent number
10,228,507
Issue date
Mar 12, 2019
3M Innovative Properties Company
Audrey A. Sherman
F21 - LIGHTING
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL CONSTRUCTION AND DISPLAY SYSTEM INCORPORATING SAME
Publication number
20200233268
Publication date
Jul 23, 2020
3M Innovative Properties Company
Encai HAO
G02 - OPTICS
Information
Patent Application
VISCOELASTIC LIGHTGUIDE
Publication number
20170227702
Publication date
Aug 10, 2017
3M Innovative Properties Company
Audrey A. Sherman
G02 - OPTICS
Information
Patent Application
OPTICAL CONSTRUCTION AND DISPLAY SYSTEM INCORPORATING SAME
Publication number
20160018700
Publication date
Jan 21, 2016
3M Innovative Properties Company
Encai HAO
G02 - OPTICS
Information
Patent Application
Highly Filled Composite Containing Resin and Filler
Publication number
20100025879
Publication date
Feb 4, 2010
3M Innovative Properties Company
Soemantri Widagdo
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Method of making composite material
Publication number
20060118989
Publication date
Jun 8, 2006
3M Innovative Properties Company
Madeline P. Shinbach
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Methods of making reflective elements
Publication number
20050158461
Publication date
Jul 21, 2005
3M Innovative Properties Company
Terrance L. Bescup
G02 - OPTICS
Information
Patent Application
Highly filled composite containing resin and filler
Publication number
20040094750
Publication date
May 20, 2004
Soemantri Widagdo
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL