 CHICAGO, Feb. 11, 2021 GLOBE NEWSWIRE -- Oil-Dri Corporation of America NYSE: ODC, a leading manufacturer of sorbent minerals, doing business as Amlan International, today announced that the Korean Intellectual Property Office has issued Patent 28958.07.0042 entitled Clay Product and Uses Thereof. The patent protects the unique and proprietary mineral-based technology of two of Amlans natural feed additives, Varium for poultry and NeoPrime for swine, which help global producers meet consumer demands for high-quality antibiotic-free animal protein. 