ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,764, issued on April 21, was assigned to Chevron Japan Ltd..
"Lubricating oil compositions" was invented by Hisanari Onouchi (Minato-Ku, Japan) and Isao Tanaka (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lubricating oil for hybrid engine includes a major amount of an oil of lubricating viscosity; a boron-containing compound in an amount to provide 50 to 300 ppm of boron to lubricating oil composition; an overbased calcium salicylate or a mixture of an overbased calcium sulfonate and overbased calcium salicylate individually having a total base number of greater than 150 mg KOH/g, measured by the method of ASTM D-2896, present ...