Walter Diemer was an American accountant and inventor, best known for creating bubble gum in 1928. He worked for the Frank H. Fleer Chewing Gum Company in Philadelphia, where he developed a new type of gum that was stretchy and less sticky than traditional chewing gum. This innovation led to the popularization of bubble gum, which became a favorite among children and adults alike. Diemer’s invention was not only a commercial success but also marked a significant moment in the history of confectionery. He later sold the rights to his formula, and Dubble Bubble became one of the first brands of bubble gum, solidifying his legacy in the candy industry.