Honorable Hamada is a former member of the Supreme Court of Japan. His service on the bench was from 2001-2006. Until his appointment to the Court, he worked in private practice, initially at Anderson, Mori & Rabinowitz and Pillsbury, Madison & Sutro.
He founded the law firm of Yanagida & Hamada in 1972, his portion of which eventually became part of Mori Hamada & Matsumoto.
For his contributions to the law and the legal profession, in 2007 the Government of Japan bestowed on him the highest honor it awards a civilian, the Grand Cordon of the Order of the Rising Sun.
He studied at Harvard Law School and received his LL.M. degree in 1966.