BALTIMORE - A federal judge in Maryland on Sept. 12 approved settlements worth $163.5 million between purchasers and the market leaders in the production of titanium dioxide on the purchasers' claims that the manufacturers engaged in price fixing, with the last agreement being reached on the eve of trial (In re Titanium Dioxide Antitrust Litigation $(All Actions$), No. 10-0318, D. Md.; 2013 U.S. Dist. LEXIS 130288).