ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,263, issued on May 12, was assigned to AGRI CULTURE KARUIZAWA Co. LTD. (Nagano, Japan) and WATAYA SEISAKUSHO Co. LTD. (Nagano, Japan).

"Waste-plastic oil conversion device" was invented by Kenichi Wataya (Nagano, Japan), Tomonori Wataya (Nagano, Japan), Hideaki Koda (Nagano, Japan) and Toshiyasu Koda (Nagano, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A waste-plastic oil conversion device includes a primary decomposition tank that generates a decomposition gas by melting waste plastic; a secondary decomposition tank that generates a low boiling point decomposition gas by heating a liquefied component generated by condensing a high boiling p...