US Patent Issued to KYODO YUSHI, NTN on July 28 for "Grease composition for constant-velocity joint and constant-velocity joint filled therewith" (Japanese Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,454, issued on July 28, was assigned to KYODO YUSHI Co. Ltd. (Kanagawa, Japan) and NTN Corp. (Osaka, Japan).

"Grease composition for constant-velocity joint and constant-velocity joint filled therewith" was invented by Zen Kawanoue (Kameyama, Japan), Shin Ogasawara (Yamato, Japan), Haruna Omi (Kawasaki, Japan), Manabu Shintani (Fujisawa, Japan), Hiroshi Murakami (Iwata, Japan), Mika Kohara (Iwata, Japan) and Rina Kondo (Iwata, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A grease composition for a constant-velocity joint includes: (a) a base oil having a kinematic viscosity of 16.0 mm2/s or more at 100deg C. and a viscosity index of 90 or mo...