Instrument Makers AEI (now Kratos) DuPont (obsolete) GammaData Hewlett-Packard (obsolete) JEOL Kratos (merged into Shimadzu) Leybold Omicron (merged with Scienta) PHI (merged into Ulvac) Riber (obsolete) Rigaku Scienta Scienta-Omicron Shimadzu-Kratos Specs Staib Surface Science Instruments (merged into Thermo) Thermo Scientific Ulvac-PHI VG Scientific (merged into Thermo) VSW (obsolete)