ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,621, issued on Jan. 27, was assigned to KAO Corp. (Tokyo).
"Asphalt composition" was invented by Norihiro Fukuri (Tokyo) and Hiroki Kakiuchi (Wakayama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an asphalt composition containing an asphalt and a polyester, the polyester being a polycondensate of a polyethylene terephthalate, an alcohol, and a carboxylic acid compound, the alcohol containing an alkylene oxide adduct of bisphenol A."
The patent was filed on March 5, 2021, under Application No. 17/908,972.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netac...