ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,211, issued on Oct. 27, was assigned to Bright Day Graphene AB (Kista, Sweden).
"Graphene separation" was invented by Anna Carlsson (Kista, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method of producing graphene and/or graphene oxide. The method comprises providing a copper-based sheet coated on one side with a carbonaceous material; providing a bath comprising an aqueous solution comprising a salt of at least one ion selected from Li+, Na+, K+, Mg2+ or Ca2+, in which bath a first electrode is arranged; feeding the copper-based sheet into the bath; applying a first voltage between the copper-based sheet ...