Tags: Businessperson.
Joseph Louis Rosefield (18 Dec 1882 – 8 Nov 1958) was a California food businessman who invented modern non-separating peanut butter in 1922 – 1923. His family business the Rosefield Packing Company was based in Alameda. His new production process was licensed to another company to make Peter Pan peanut butter in 1923. Rosefield Packing later marketed Skippy peanut butter in 1932; both brands are still sold today.