ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,759, issued on Nov. 3, was assigned to COOLER MASTER Co. LTD. (Taipei City, Taiwan).
"Fan blade design for cooling fans" was invented by Jia-Hong Shen (Taipei City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fan blade design includes a hub and a plurality of blades connected to the hub. Each of the blades is a swept-back blade and has a leading edge and a trailing edge disposed opposite the leading edge. The trailing edge includes a first concave arc segment and a second concave arc segment, the first concave arc segment being positioned closer to the hub than the second concave arc segment. A chord length of the first concave arc segmen...