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. 26, 2022
Filed:
Jun. 05, 2017
3m Innovative Properties Company, St. Paul, MN (US);
Todd D. Jones, St. Paul, MN (US);
Bimal V. Thakkar, St. Paul, MN (US);
Duane D. Fansler, Dresser, WI (US);
Anthony F. Schultz, Forest Lake, MN (US);
Jonathan E. Janoski, Woodbury, MN (US);
David C. Lueneburg, Austin, TX (US);
Carla S. Thomas, Woodbury, MN (US);
Tien Yi T. H. Whiting, St. Paul, MN (US);
Robert F. Watkins, White Bear Lake, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A light directing article comprises an acrylic polyvinyl acetal film to protect the optical elements of the light directing article. The acrylic polyvinyl acetal film has a Tg of at least 30° C. and comprises a (meth)acrylic polymer and polyvinyl acetal polymer. The acrylic polyvinyl acetal film is flexible and durable to mechanical deformation.