ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,727,694, issued on Sept. 8.
"Concave ring coaster" was invented by Steven Young (Liberal, Kan.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drinking glass coaster has a circular substrate with a flat topside and a concave underside having a perimeter lip configured to make contact with a table top and at least one concentric ring attached to the concave underside and the flat topside and comprising a reusable sticky substance for adhering to a bottom of a drinking glass."
The patent was filed on Sept. 4, 2024, under Application No. 18/824,011.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netac...