ALEXANDRIA, Va., July 3 -- United States Patent no. 12,343,733, issued on July 1, was assigned to Resand Oy (Nuutajarvi, Finland).
"Reclamation of waste sand" was invented by Jukka Nieminen (Nuutajarvi, Finland) and Toni Wesin (Nuutajarvi, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for a reclamation of waste sand comprising bentonite binder, in which method it is subjected a thermal treatment to the waste sand for removing carbon and absorbed moisture from the bentonite binder in the waste sand, it is subjected a mechanical treatment to the thermally treated waste sand for mechanically separating the sand from the bentonite binder, and it is subjected a cooling effect to the sand separat...