ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,145, issued on Oct. 28, was assigned to OSAKA SEALING PRINTING Co. LTD. (Osaka, Japan).
"Heat-sensitive recording body" was invented by Mai Fujii (Osaka, Japan), Yusuke Egashira (Osaka, Japan) and Masahiko Yoshida (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A thermal recording medium includes: a transparent base material and a thermal recording layer on the base material. The thermal recording layer contains a dispersant having a carboxyl group and a crosslinking agent including an epichlorohydrin-modified polyamide polyamine resin or an organic compound containing an oxazoline group."
The patent was filed on Nov. 26, 2019, under A...