ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,804, issued on June 17, was assigned to P-DUKE TECHNOLOGY Co. LTD. (Taichung, Taiwan).

"Switching power converting apparatus" was invented by Hao-Jen Wang (Taichung, Taiwan), Cheng-Te Tsai (Taichung, Taiwan), Hsiao-Hua Chi (Taichung, Taiwan), Lien-Hsing Chen (Taichung, Taiwan), Chun-Ping Chang (Taichung, Taiwan) and Liang-Jhou Dai (Taichung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An improved switching power converting apparatus (10) includes a power converting circuit (102), a sampling circuit (104), a signal gain adjustment circuit (106), a frequency limiting circuit (108) and a pulse width modulation controller (110). The sampling c...