US Patent Issued to 3M Innovative Properties on Sept. 9 for "Pleated filtration assembly comprising spunbonded prefilter" (Minnesota Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,401, issued on Sept. 9, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Pleated filtration assembly comprising spunbonded prefilter" was invented by Himanshu Jasuja (Woodbury, Minn.), Nathan E. Schultz (Woodbury, Minn.), Seth M. Kirk (Minneapolis), Bryan L. Gerhardt (Woodbury, Minn.), Daniel C. Duan (St. Paul, Minn.) and Michael R. Berrigan (Oakdale, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pleated multilayer air filter assembly including a primary filtration layer and a prefilter layer that are bonded to each other and are co-pleated with each other. The primary filtration layer includes meltblown electret fibers. Th...