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:
Mar. 12, 2019
Filed:
Feb. 21, 2017
3m Innovative Properties Company, St. Paul, MN (US);
Audrey A. Sherman, Woodbury, MN (US);
Michael A. Meis, Stillwater, MN (US);
Kevin R. Schaffer, Woodbury, MN (US);
Marie A. Boulos, West Saint Paul, MN (US);
Soemantri Widagdo, Mendota Heights, MN (US);
Thu-Van T. Tran, Maplewood, MN (US);
Ellen O. Aeling, Oakdale, MN (US);
Patrick J. Yeshe, Woodbury, MN (US);
Wendi J. Winkler, Minneapolis, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Disclosed herein is an optical device having a light source and a viscoelastic lightguide. Light from the light source enters the viscoelastic lightguide and is transported within the lightguide by total internal reflection. The viscoelastic lightguide may comprise a pressure sensitive adhesive. The optical device may be used in a variety of constructions wherein the device emits light being transported within the viscoelastic lightguide. Constructions include those used for signs, markings, illumination devices, display devices, keypad assemblies and tail light assemblies for vehicles.