ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,776, issued on Jan. 13.
"Cleaning and depolluting of fibres originating from used cigarette butts by contacting with a supercritical fluid and recycling of the depolluted fibres" was invented by Julien Paque (Berthecourt, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention concerns a facility for cleaning cigarette butts, including a treatment tank configured to treat the cigarette butts in order to extract therefrom fibres to be depolluted, and depollution means configured to depollute the fibres by placing them in contact with a fluid in the supercritical state, referred to as supercritical fluid."
The patent was filed on ...