US Patent Issued to SYSTEMTEXT on Jan. 20 for "Colour afterglowing sign" (Swedish Inventor)

ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,530,994, issued on Jan. 20, was assigned to SYSTEMTEXT AB (Malmo, Sweden).

"Colour afterglowing sign" was invented by Mikael Andersson Lonnstrom (Skanor, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention describes a colour afterglowing product, said colour afterglowing product being printed with a colour afterglowing layer comprising colour afterglowing pigment(s), wherein the colour afterglowing product comprises symbols and/or text in one first afterglowing colour and a complementing signal field with a colour afterglowing layer in a different second afterglowing colour, where the complementing signal field with a colour afte...