ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,821, issued on March 25, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Radio-wave anti-reflection sheet, tape and vehicle member" was invented by Masataka Shinagawa (Niiza, Japan), Keiichiro Horikoshi (Yamagata, Japan), Koji Hishitani (Tokyo) and Masaaki Takeda (Sagamihara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A radio-wave anti-reflection sheet has a substantially non-tacky first major surface and an opposing substantially tacky second major surface and includes a first polymeric foam layer disposed between the first and second major surfaces, and a second polymeric foam layer disposed between the second major sur...