applied methodologies that had been available since the 1920s developed by luminaries like Shewhart , Deming , Juran , Ishikawa , Ohno , Shingo , Taguchi and Shainin . Organizations including Honeywell, Citigroup, Motorola, Starwood Hotels, DuPont, Dow Chemical, American Standard, Kodak, Sony, IBM, Ford have implemented Six Sigma programs across