Rudolph Technologies, Inc. (Rudolph) is engaged in the design, development, manufacture and support of process control metrology, defect inspection and data analysis systems used by semiconductor device manufacturers. Rudolph operates in a single segment and supports applications in the areas of diffusion, etch, lithography, chemical vapor deposition (CVD), physical vapor deposition (PVD), chemical mechanical polishing (CMP), and macro-defect detection and classification. As of December 31, 2008, approximately 76.5% of its revenues were derived from customers outside of the United States, of which 57.0% were derived from customers in Asia and 19.5% were derived from customers in Europe. On January 22, 2008, Rudolph acquired RVSI Inspection, LLC (which is known as Rudolph Technologies Wafer Scanner Product Group). In August 2009, Rudolph acquired Adventa Control Technologies, Inc.