ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,453, issued on Dec. 16, was assigned to VISION AI Co. LTD. (Seoul, South Korea).
"RF signal conversion device" was invented by Min Sik Park (Goyang-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An RF signal conversion device according to an embodiment of the present invention may convert a signal of a user terminal into a signal that can be processed by an RF card reader, and convert radio waves around an antenna unit into DC electricity to be used as power."
The patent was filed on March 20, 2023, under Application No. 18/186,841.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/...