James R. Northup

ZYGO Corp. designs, manufactures and distributes optical systems and components for metrology and end-user applications. It operates through two segments: Metrology Solutions and Optical Systems. The Metrology Solutions division is comprised of three business units: Precision Positioning Systems, Vision Systems, and Instruments. This division's products employ various optical phase analysis techniques for measuring displacement, surface shape and texture, and film thickness. The Optical Systems division is comprised of two business units: Electro-Optics and Optical Components. The company was founded in 1970 and is headquartered in Middlefield, CT.

DuPont Photomasks, Inc. was engaged in supplying photomasks. Photomasks are the customized etched plates of high-purity quartz or glass that are used by semiconductor makers to transfer circuit patterns onto silicon wafers. The company also supplies major chip makers, including AMD, IBM, Philips, STMicroelectronics, Texas Instruments and United Microelectronics. It also makes photomasks used to produce flat-panel displays, disk drive heads, microelectromechanical products and biochips. The company was located in Round Rock, TX.

Toppan Photomasks, Inc. develops and supplies photomask technologies. It also makes photomasks used to produce flat-panel displays, disk drive heads, biochips, and microelectromechanical products. The company is headquartered in Round Rock, TX.