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:
Jun. 24, 2025
Filed:
May. 21, 2020
3m Innovative Properties Company, St. Paul, MN (US);
Timothy J. Hebrink, Scandia, MN (US);
Michelle M. Mok, St. Paul, MN (US);
Derek J. Dehn, Maplewood, MN (US);
Mary E. Johansen, Woodbury, MN (US);
Lon R. Johnson, New Brighton, MN (US);
Todd G. Pett, St. Paul, MN (US);
Moses M. David, Woodbury, MN (US);
James P. Burke, St. Paul, MN (US);
Vivian W. Jones, Woodbury, MN (US);
Haiyan Zhang, Lake Elmo, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A composite cooling film comprises an ultraviolet-reflective multilayer optical film and a reflective microporous layer secured thereto. The ultraviolet-reflective multilayer optical film is at least 50 percent reflective of ultraviolet radiation over a majority of the wavelength range of at least 340 but less than 400 nanometers. The reflective microporous layer has a continuous phase comprising a nonfluorinated organic polymer and is diffusely reflective of solar radiation over a majority the wavelength range of 400 to 2500 nanometers, inclusive. The composite cooling film has an average absorbance over the wavelength range of 8 to 13 microns of at least 0.85. An article comprising the composite cooling film adhered to a substrate is also disclosed.