https://patentbrief.org/company/us-department-of-agriculture-usda Plain-English explanations of patents assigned to US Department of Agriculture USDA, newest first. en-us Mon, 15 Jun 2026 06:05:32 GMT https://patentbrief.org/patent/us/2442141/vitamin-b12-isolation This 1948 patent details a method for growing the mold Penicillium in large vats using a corn steep liquor medium, which enabled the mass production of life-saving antibiotics. Tue, 25 May 1948 00:00:00 GMT https://patentbrief.org/patent/us/2442141/vitamin-b12-isolation