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:
May. 02, 2023
Filed:
Dec. 01, 2016
3m Innovative Properties Company, St. Paul, MN (US);
John A. Wheatley, Stillwater, MN (US);
Gilles J. Benoit, Minneapolis, MN (US);
Guanglei Du, Painted Post, NY (US);
Steven R. Anderson, Woodbury, MN (US);
Owen M. Anderson, Minneapolis, MN (US);
David T. Yust, Woodbury, MN (US);
Rolf W. Biernath, Wyoming, MN (US);
Gary E. Gaides, Woodbury, MN (US);
Brian W. Lueck, Houlton, WI (US);
Neeraj Sharma, Woodbury, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A retroreflective system is disclosed that includes a retroreflective sheet for retroreflecting light, and a light control film disposed on the retroreflective sheet. For a first wavelength, light incident on the light control film at each of a first and second angles of incidence is retroreflected. For a second wavelength, light incident on the light control film at the first, but not the second, angle of incidence is retroreflected.