US Patent Issued to Donaldson on May 12 for "Fluorine-free hydrophobic permeable material" (Minnesota Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,181, issued on May 12, was assigned to Donaldson Co. Inc. (Bloomington, Minn.).

"Fluorine-free hydrophobic permeable material" was invented by Stephen K. Sontag (Plymouth, Minn.), Mikayla A. Yoder (Eagan, Minn.), Matthew P. Goertz (Bloomington, Minn.) and Davis B. Moravec (Burnsville, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An article includes a permeable material having a surface; and a hydrophobic coating on the surface forming a hydrophobic surface, the hydrophobic coating being free of fluorine, and the hydrophobic surface having a water-contact angle of 95 degrees or greater. The article may be a vent. A method of making the hydroph...