ALEXANDRIA, Va., May 12 -- United States Patent no. 12,622,986, issued on May 12, was assigned to MUNCHKIN INC. (Van Nuys, Calif.).

"Method of sterilizing waste containers with ultraviolet light" was invented by Steven Bryan Dunn (Beverly Hills, Calif.), Thomas Edward Birkert (West Hills, Calif.), Kevin Douglas Johnson (Tarzana, Calif.), Michael John Laudi (Los Angeles), Nicholas Arthur Trumbo (Valencia, Calif.), Sung Yun Chan (Pasadena, Calif.), Ip Hing Lai (Northern Territories, Hong Kong), Cheung Yik Man (Northern Territories, Hong Kong), Ho Wing Tak (Northern Territories, Hong Kong), Luk Ka Lok (Tuen Mun, Hong Kong), Chan Kim Ho (Tai Hang, Hong Kong) and Mark Gerard Tebbe (Ventura, Calif.).

According to the abstract* released by the U...