Executive Bios

Dennis Barket, Jr., Ph.D.
Founder and President

Dennis completed his doctoral research in analytical chemistry at Purdue University in the fall of 2001, focusing on preparing mass spectrometers for field trials and environmental research. While at Purdue, Dennis was funded by a NASA Earth System Science Fellowship Award. He has also completed the Applied Management Principles Program through the Krannert School of Management, which provides science & engineering graduate students with a "mini-MBA" experience. Dennis completed his undergraduate work at Indiana University with a double major in Biology and Chemistry. Subsequent to his undergraduate work, Dennis joined Procter and Gamble as a Senior Research Associate and worked in an up-stream product development team. Research at P&G focused on polymer and targeted delivery technologies.

Garth Patterson, Ph.D.
Founder and Vice President of Research and Development

Garth completed his doctoral research under the tutelage of the Henry Bohn Hass Distinguished Professor, Dr. R. G. Cooks, at Purdue University. While at Purdue, his research included alternative detection methods using quadrupole ion trap mass spectrometers as well as miniaturization research utilizing the same detection technique. Therefore, his research is directly related to the technology being commercialized by Griffin Analytical Technologies. Garth has worked with Professor Carolyn Brock, Professor Ben Freiser, as well as Professor Cooks. Garth's findings have been published in a variety of scientific journals and have been presented at several top scientific conferences.

David M. Shelby, M.B.A.
Vice President of Finance and Business Operations

David has consulted with multiple companies in the Purdue Research Park and is familiar with the issues of commercialization of innovative products. David has provided CFO and general business services to a number of established businesses in both Indiana and Illinois. Prior to his consulting work with emerging companies in the Purdue Research Park, David spent twelve years in commercial finance, which included positions in business development, trust, and commercial lending. He has consulted in Poland, Canada, and Brazil.

Mark Gregory, M.B.A.
Vice President, Manufacturing and Product Development

Mark has more than 20 years of experience in the development and manufacture of electronic instrumentation. He has helped develop a broad range of products from cardiac pacemakers to downhole tools (oilfield instrumentation) to clinical diagnostic instruments. Mark was actively involved in the creation of two previous successful startups, and served as President of one of those firms, a medical device contract manufacturer for more than six years. Mark received a B.S.E. (Mechanical Engineering) from the University of Michigan. He also received an M.S.E. in Bioengineering from the University of Michigan, under a National Institutes of Health Training Grant. Later in his career, Mark earned an Executive MBA from Indiana University.

Rob Donoho
Vice President, Sales and Marketing

Rob has more than 20 years of experience in sales and marketing of high tech capital equipment. Rob began his sales career with Dow Chemical and Hewlett Packard (now Agilent.) While at Agilent, Rob became a field technical expert in both tactical and strategic product positioning. Rob’s next stops provided first hand small business experience. Rob was VP of sales and marketing for an analytical services lab expanding into pharmaceutical drug development testing. At his final stop before Griffin, Rob was promoted to National Sales Manager of SAGIAN before it was purchased by Beckman Coulter. After the acquisition Rob became the Manager of Strategic Marketing guiding the $100M Automated Solutions Development Centers’ product development and marketing. Rob received his Bachelor of Science from Denison University in Granville, Ohio.