ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,737, issued on Dec. 16, was assigned to SWM Holdings US LLC (Alpharetta, Ga.).
"Filter media" was invented by Jiayi Pan (Le Mans, France), Christophe Le Moigne (Le Mans, France), Nathalie Durot (Le Mans, France), Michel Barale (Le Mans, France) and Stephane Derrien (Le Mans, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filter element is disclosed made from a gathered paper web that may be crimped, embossed, and/or corrugated. In accordance with the present disclosure, the paper web is treated with at least two different additives. The first additive comprises amphiphilic molecules, having hydrophilic and hydrophobic ends such as a ketene ...