US Patent Issued to SUBARU on Sept. 29 for "Desulfurization method" (Japanese Inventor)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,685, issued on Sept. 29, was assigned to SUBARU Corp. (Tokyo).

"Desulfurization method" was invented by Masanori Sasaki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A desulfurization method includes: operating an engine to warm up an NOx storage-reduction catalyst provided in an exhaust passage coupled to the engine; controlling the engine so that an excess air ratio of the engine becomes a target value that is lower than 1 when a temperature of the NOx storage-reduction catalyst reaches a temperature at which the NOx storage-reduction catalyst is capable of reducing sulfur components stored in the NOx storage-reduction catalyst; stopping ...