US Patent Issued to DAIKIN INDUSTRIES on Jan. 27 for "Air filter medium, pleated filter medium, air filter unit, mask filter medium, and method for regenerating air filter medium" (Japanese Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,614, issued on Jan. 27, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Air filter medium, pleated filter medium, air filter unit, mask filter medium, and method for regenerating air filter medium" was invented by Hideyuki Kiyotani (Osaka, Japan) and Kunihiko Inui (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air filter medium includes a fluororesin porous membrane and a supporting member stacked on top of each other. The air filter medium has a permeability ratio (permeability after disinfection treatment/permeability before disinfection treatment) of 5.0 or less, the permeability ratio being a ratio of permeabilities of t...