to Divest Assets from its 2002 Purchase of Hyprotech, Ltd'. European Symposium on Computer Aided Process Engineering - 11: 11th European Symposium of the Working Party on Computer Aided Process Engineering. Archived from the original on 20 September 2014. 'Hyprotech: Simulation software for industry'. An Applied Guide to Process and Plant Design.
A Dictionary of Chemical Engineering Oxford Quick Reference. 'ERT 214 MATERIAL AND ENERGY BALANCE HYSYS SIMULATION MANUAL' (PDF). ^ Shukor, Hafiza Ku Ismail, Ku Syahidah Mohd Johar, Hafizah.As of late 2016, AspenTech continues to produce HYSYS. The divestment agreement specified that Aspentech would retain rights to market and develop most Hyprotech products (including HYSYS) royalty-free. Honeywell was also able to hire a number of HYSYS developers, ultimately mobilizing these resources to produce UniSim. Following a 2004 ruling by the United States Federal Trade Commission, AspenTech was forced to divest its Hyprotech assets, including HYSYS source code, ultimately selling these to Honeywell. In May 2002, AspenTech acquired Hyprotech, including HYSYS. The HYSYS Version 1.1 Reference Volume was published in 1996. HYSYS was first conceived and created by the Canadian company Hyprotech, founded by researchers from the University of Calgary.
