ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,337, issued on May 20, was assigned to GPCP IP HOLDINGS LLC.
"Compostable paperboard for pressware products" was invented by Michael A. Breining (Neenah, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Pressware products made from paperboard and methods for making same. The product can include a paperboard substrate and a compostable barrier coating, as determined by ASTM D6868-19, that is at least partially disposed on the paperboard substrate. The product can also include a paperboard substrate and a first compostable coating at least partially disposed on the paperboard substrate. The first compostable coating can include clay particles and l...