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. 02, 2015
Filed:
May. 04, 2009
Pingfan Wu, Woodbury, MN (US);
Douglas A. Dunn, Maplewood, MN (US);
Dennis E. Vogel, Lake Elmo, MN (US);
Stanley C. Busman, North St. Paul, MN (US);
Pingfan Wu, Woodbury, MN (US);
Douglas A. Dunn, Maplewood, MN (US);
Dennis E. Vogel, Lake Elmo, MN (US);
Stanley C. Busman, North St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Multi-layer articles capable of forming color images are provided. The articles include a multi-layer construction with at least two layers in which at least one of the layers includes a thermally activatable composition. The thermally activatable composition includes a non-linear light to heat converter composition and a color forming compound. Upon activation with a light source an image forms.