ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,762, issued on July 21, was assigned to NOK Corp. (Tokyo).
"Nitrile rubber-based composition" was invented by Shunsuke Abe (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A nitrile rubber-based composition comprising 1,000 to 2,500 parts by weight of a magnetic powder or silylated magnetic powder having a compressed density of 3.4 to 3.7 g/cm3, 0.5 to 20 parts by weight of alkoxyalkylsilane, and 8 to 40 parts by weight of a plasticizer, based on 100 parts by weight of nitrile rubber, hydrogenated nitrile rubber, or blend rubber thereof. The nitrile rubber-based composition that does not cause deterioration in roll processability and ...