J. H. Hobbs, Brockunier and Company was one of the largest and best known manufacturers of glass in the United States in the 19th century. Its products were distributed world-wide. The company is responsible for one of the greatest innovations in American glassmaking—an improved formula for lime glass that enabled American glass makers to produce high-quality glass at a lower cost. The firm also developed many of the talented glassmakers that started glass factories in Ohio and Indiana.