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Katsuhiko Sakamoto has been widely practicing Lean SixSigma as Lean Six Sigma Master Black Belt/Trainer/Coach, certified by PYZDEK INSTITUTE and others. This site objective is to share any useful information about not only lean and six sigma, but also related areas, such as transformation. 
The Pyzdek Institute is accredited by both IASSC (Thee International Association of Six Sigma Certification) and The SixSigma Council (The Council for Six Sigma Certification).

Blog site is also updated periodically.