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. 23, 2019
Filed:
Mar. 14, 2014
South Dakota Board of Regents, Pierre, SD (US);
Jon Kellar, Rapid City, SD (US);
P. Stanley May, Rapid City, SD (US);
William Cross, Rapid City, SD (US);
Jeevan Meruga, Rapid City, SD (US);
Tyler Blumenthal, Rapid City, SD (US);
SOUTH DAKOTA BOARD OF REGENTS, Pierre, SD (US);
Abstract
The present invention relates generally to using upconverting inks for producing highly-resolved patterns for, inter alia, security applications. More specifically, the present invention relates to the use of sols (inks) and printing processes that produce well-defined printed features consisting of polymers impregnated with luminescent upconversion nanocrystals. The patterns printed using such inks and processes may exhibit defined shapes, characters of text, and various other types of images.