ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,915, issued on Sept. 16, was assigned to ExxonMobil Chemical Patents Inc. (Baytown, Texas).

"Isobutylene-containing compositions and articles made thereof" was invented by Sunny Jacob (Seabrook, Texas), Yuan-Ju Chen (Houston), Sujith Nair (League City, Texas) and Bemard D'Cruz (Bangalore, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a composition having a C4 to C7 isoolefin, an alkylstyrene, and a diolefin, where the C4 to C7 isoolefin is not the same as the diolefin. The invention also provides a composition having a first C4 to C7 isoolefin and paramethylstyrene component and a second C4 to C7 isoolefin and ...