ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,405, issued on Dec. 2.
"Pigment and pigment production method" was invented by Garrett Foster Benisch (Summit, N.J.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A novel pigment and a method to create the novel pigment are described. A raw material, such as municipal sewage sludge, municipal compost, food waste, agricultural waste, forestry waste, agroforestry waste, biomass, and/or livestock waste, are screened, cleaned, and/or prepared. The raw material is digested by microorganisms to create methane and a biosolid. The biosolid is dried and then carbonized to create a biochar. The biochar is ground into a powder pigment until a predetermined part...