TEKMILL delivers CNC machining and fabrication services to both large and small companies.




Gary Durack is a biomedical engineer, inventor, and successful technology entrepreneur.

Gary began his career in 1979 at the Coulter Corporation, a world leader in IVD instrumentation. Until 2013 he served as CEO and CSO for iCyt Visionary Bioscience, a biomedical design engineering and product company which he founded in 1995. In 2009 iCyt was acquired by the Sony Corporation and renamed Sony Biotechnology.

In addition to his role at TEKMILL, Gary is an investor in technology startup companies and spends considerable time advising and encouraging their founders. He is an Adjunct Professor of Bioengineering at the University of Illinois and is affiliated with the Micro and Nano Technology Laboratory. He serves as a Business Mentor with the Chicago Innovation Mentor program, on the Institutional Review Board for Carle Foundation Hospital, and on several NIH SBIR study sections. Gary serves on the boards of TEKMILL, Aptimmune Biologics, PhotoniCare, and Exalt Diagnostics.

Gary’s companies have been continuous tenants in the University of Illinois Research Park since 2001. The University of Illinois and the Champaign County Economic Development Corporation selected Gary in 2005 for their Entrepreneurial Excellence Award and again in 2010 for their Economic Development Award. In 2006 his company received the Outstanding Research Park Company Award, and in 2008 iCyt’s new product won the Frost and Sullivan Global Award for the Most Innovative Emerging Cytometry Technology.

Gary is a Fellow of the American Institute for Medical and Biological Engineering and served several years as a Technical Counselor for the International Society for the Advancement of Cytometry, which presented him with their Distinguished Service Award in 2014. In 2015 Gary received the Carleton and Sigrid Stewart Award from the Great Lakes International Image and Flow Cytometry Association.

Over his 36-year career he has edited a book, written multiple book chapters, and authored several peer-reviewed publications in the field of cytometry. He has 29 issued US patents and more than a dozen pending patent applications. Gary attended Purdue University where he earned a Bachelors Degree in Electrical and Electronic Engineering.


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