US Patent Issued to Hollingsworth & Vose on Sept. 23 for "Multi-layered electret-containing filtration media" (Virginia, Massachusetts Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,221, issued on Sept. 23, was assigned to Hollingsworth & Vose Co. (East Walpole, Mass.).

"Multi-layered electret-containing filtration media" was invented by Sudheer Jinka (Christiansburg, Va.), David T. Healey (Bellingham, Mass.) and Mark A. Gallimore (Floyd, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Filter media for filtering gas streams (e.g., air) are described herein. In some embodiments, the filter media may be designed to have desirable properties such as stable filtration efficiency, high oil repellency, low instantaneous resistance, and/or stable service life. In certain embodiments, one or more layers of the media may have a cert...