ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,025, issued on May 20, was assigned to ENEOS MATERIALS Corp. (Tokyo).
"Polymer composition, cross-linked product, and tire" was invented by Rikimaru Kuwabara (Minato-ku, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "This polymer composition includes: a modified conjugated diene-based polymer having at least one nitrogen-containing functional group selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, a primary amino group having been protected or converted into an onium group, a secondary amino group having been protected or converted into an onium group, and a tertiary amino group havin...