US Patent Issued to 3M Innovative Properties on Sept. 15 for "Hardhat with air conduit" (British, American Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,734,377, issued on Sept. 15, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Hardhat with air conduit" was invented by Benjamin A. Johnson (Woodbury, Minn.), Garry J. Walker (Stockton-On-Tees, Great Britain), David L. Ausen (Eagan, Minn.), Paul A. Martinson (Maplewood, Minn.) and David J. Schmidt (Lake Elmo, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hardhat having an outer major surface, and an air conduit coupled to the outer major surface. The outer major surface of the hardhat and the air conduit form an air channel for a source of supplied air."

The patent was filed on Oct. 6, 2025, under Application No. 19/350,477. ...