ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,289, issued on Sept. 8, was assigned to Bridgestone Europe NV/SA (Zaventem, Belgium).

"Self-healing rubber comprising a poly(methacrylic) oligomer" was invented by Raffaele Di Ronza (Rome), Yoshihiro Morishita (Tokyo), Alan Wemyss (Coventry, Great Britain) and Chaoying Wan (Coventry, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a rubber composition comprising a poly(methacrylic acid) oligomer, a process for preparing the rubber composition, a cured rubber composition, and a self-healing tire prepared by using the rubber composition. The invention further relates to an amphiphilic block copolymer, and ...