MMI began its business in 1998 as a supplier of single crystal sapphire fibers. Since then, it has expanded its product lines to include fiber-optic temperature sensors as well as chemical sensors. A salient feature of MMI's business model is that virtually all its technologies are covered by its own or licensed patents. Its customers range from major global corporations (Boeing, Corning, GE, Philips,...) to start-up companies and research institutions.