Eric Johnson has been named COO of JSR Microelectronics Inc., the Sunnyvale, Calif.-based, US operations for JSR Corp. of Tokyo. Johnson will oversee JSR Microelectronics' day-to-day operations in the US, including production, sales and marketing, business development and human resources. JSR Microelectronics produces and supplies custom and fine chemical products for the advanced semiconductor and electronic device fabrication industries.