ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,714, issued on July 1, was assigned to CARBIOS (Clermont-Ferrand, France).

"Esterases and uses thereof" was invented by Alain Marty (Toulouse, France) and Vincent Tournier (Toulouse, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to novel esterases, more particularly to esterase variants having improved activity and/or improved thermostability compared to the esterase of SEQ ID NO: 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthala...