The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2020
Filed:
Dec. 09, 2015
3m Innovative Properties Company, St. Paul, MN (US);
Donald K. Larson, Cedar Park, TX (US);
Craig R. Schardt, Woodbury, MN (US);
Stephen C. King, Lakeway, TX (US);
Daniel J. Treadwell, Austin, TX (US);
Constand E. Yemelong, Austin, TX (US);
Joseph C. Carls, Austin, TX (US);
Cary A. Kipke, Austin, TX (US);
3M INNOVATIVE PROPERTIES COMPANY, Saint Paul, MN (US);
Abstract
A system having a concealed communications element like a telecommunication antenna is described. More specifically, The system has a communications element that is concealed by a highly reflective multilayer polymer optical film. The first element of the multilayer polymer optical film is a core layerthat is made up of a multilayer optical stack. The multilayer optical stack of core layerincludes two alternating polymeric layers. The multilayer polymer optical film may optionally also include a protective layer(for example, a hardcoat or an over laminate) that is positioned between the viewer and the core layer. The protective layermay include one or more UV absorbers to aid in durability of the multilayer polymer optical film against UV-degradation. Multilayer polymer optical filmmay optionally also include an adhesive layerthat is positioned between the core layerand a surface onto which the multilayer polymer optical film is to be adhered.