Pittsburgh--FreeMarkets Inc. has entered into a joint venture with Tokyo-based Mitsubishi Corp. to provide b-to-b e-commerce services in Japan. The as-yet-unnamed venture will offer FreeMarkets' b-to-b e-procurement and trading platforms to Japanese companies. Mitsubishi will provide funding for the venture, as well as introductions to Japanese clients, a notoriously tough demographic for U.S. companies to reach without a Japanese partner company. Funding amounts were not disclosed. FreeMarkets also has operations in China, South Korea, Thailand, India and Singapore.