U.S. Patent 2,455,992

U.S. Patent 2,455,992, issued in 1948, covers a method for producing a form of a synthetic rubber called "butadiene-styrene copolymer." This process combines two materials—butadiene and styrene—to create a rubbery substance that is strong, flexible, and weather-resistant. The invention aimed to enhance the production efficiency of synthetic rubber, making it a valuable resource for manufacturing tires, gaskets, and various rubber products. This innovation contributed significantly to the automotive and consumer goods industries, especially during the post-World War II era when the demand for durable materials increased.