Who bought the rights to develop and manufacture polyester?

The rights to develop and manufacture polyester were initially acquired by the American chemical company DuPont in the 1940s. DuPont, in collaboration with British chemist John Rex Whinfield and his colleague James Tennant Dickson, played a significant role in the commercialization of polyester, particularly with the introduction of the brand "Dacron" in the 1950s.