ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,408, issued on June 24, was assigned to ENEOS Corp. (Tokyo).
"Lubricating oil composition" was invented by Yohei Susukida (Tokyo), Yasushi Onumata (Tokyo), Akira Tada (Tokyo) and Noriko Ayame (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lubricating oil composition including: a lubricant base oil; (A) a calcium salicylate detergent in an amount of 0.005 to 0.03 mass % in terms of calcium on the basis of the total mass of the composition; (B) a succinimide ashless dispersant in an amount of 0.005 to 0.25 mass % in terms of nitrogen on the basis of the total mass of the composition; (C) a nitrogen-containing antioxidant in an amount of 0.005...