ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,245, issued on April 29, was assigned to E.O.S. S.P.A. (Turin, Italy).
"Time-temperature indicator" was invented by Stefano Maccagnani (Rome) and Andrea Amato (Guidonia, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a visual time-temperature indicator which comprises a first and a second element each comprising a hydrogel, wherein said first element further comprises at least one alkalinizing agent, and said second element comprising further at least one food colouring."
The patent was filed on Nov. 10, 2020, under Application No. 17/774,494.
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