ALEXANDRIA, Va., July 9 -- United States Patent no. 12,350,619, issued on July 8, was assigned to K&N Engineering Inc. (Corona, Calif.).
"Hydrocarbon absorbing air filter box" was invented by Steve Williams (Cherry Valley, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydrocarbon absorbing air filter box is provided for absorbing evaporative hydrocarbon emissions from an air intake duct of an internal combustion engine. A combined mass airflow sensor and hydrocarbon trap comprising the hydrocarbon absorbing air filter box includes a duct supporting a hydrocarbon absorbing sheet within an interior of a housing. The duct communicates an airstream from an air filter to the air intake duct during opera...