WILMINGTON, DE--(Marketwire - Aug 30, 2012) - Rigrodsky & Long, P.A. announces that it is investigating potential legal claims against the board of directors of FSI International, Inc. ("FSI" or the "Company") ( NASDAQ : FSII ) regarding possible breaches of fiduciary duties and other violations of law related to the Company's entry into an agreement to be acquired by Tokyo Electron Ltd. ("Tokyo ...