US Patent Issued to University of Tennessee Research Foundation on March 18 for "Methods of saturating nonwoven fabrics with liquid and the making of electret thereof" (Tennessee Inventor)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,826, issued on March 18, was assigned to University of Tennessee Research Foundation (Knoxville, Tenn.).

"Methods of saturating nonwoven fabrics with liquid and the making of electret thereof" was invented by Peter Ping-Yi Tsai (Knoxville, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of preparing an electret by saturating a nonwoven fabric with a liquid, such as water, and removing the liquid via suction to generate charges by friction between the fabric fibers and the liquid is described. The saturating can be carried out, for example, by impinging the bottom side of the fabric with a jet or jets of water while the fabric is being...