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Thomas R. Hoffend, JR.
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Woodbury, MN, US
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Patents Grants
last 30 patents
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Patent Grant
Optical decollimator for daylighting systems
Patent number
8,098,434
Issue date
Jan 17, 2012
3M Innovative Properties Company
Thomas R. Hoffend, Jr.
G02 - OPTICS
Information
Patent Grant
Thermal mass transfer substrate films, donor elements, and methods...
Patent number
7,396,632
Issue date
Jul 8, 2008
3M Innovative Properties Company
Martin B. Wolk
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Patent Grant
Thermal mass transfer substrate films, donor elements, and methods...
Patent number
7,223,515
Issue date
May 29, 2007
3M Innovative Properties Company
Martin B. Wolk
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Patents Applications
last 30 patents
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Patent Application
SWITCHABLE LIGHT-DUCT EXTRACTION
Publication number
20120057350
Publication date
Mar 8, 2012
3M Innovative Properties Company
David G. Freier
F21 - LIGHTING
Information
Patent Application
COLLIMATING LIGHT INJECTORS FOR EDGE-LIT BACKLIGHTS
Publication number
20100165621
Publication date
Jul 1, 2010
Thomas R. Hoffend, JR.
G02 - OPTICS
Information
Patent Application
CURVED SIDED CONE STRUCTURES FOR CONTROLLING GAIN AND VIEWING ANGLE...
Publication number
20100128351
Publication date
May 27, 2010
3M Innovative Properties Company
Kenneth A. Epstein
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL