How long did it take Goodyear to perfect the process of manufacturing rubber?

Goodyear did not actually perfect the process of manufacturing rubber; rather, Charles Goodyear is best known for developing the vulcanization process in the 1830s and 1840s, which significantly improved the properties of rubber. His experimentation with various materials and techniques took over a decade, culminating in a patent granted in 1844. This innovation allowed rubber to become more durable and heat-resistant, paving the way for its widespread use in various industries, including tire manufacturing.