Our founder, Dr. Patrick Zimmerman created C-Lock Inc in 2005 in Rapid City, South Dakota.

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Dr. Patrick Zimmerman

C-Lock Inc. professionals utilize cutting-edge science and engineering to monitor, analyze, and control cattle biological parameters. Through a systematic approach that incorporates intelligent data-mining techniques, measurements, and numerical modeling, we can detect problems that lower efficiency and productivity. Our unique capabilities to pinpoint problems, identify opportunities, and offer a cost-effective solution saves our clients' money.

Our company focuses on agricultural practices but also has experience in measuring emissions related to energy production. We have created GreenFeed (US Patent 7966971, others pending), a system that measures methane and metabolic carbon dioxide emissions from ruminants such as cattle to provide farmers and ranchers with real-time data to document improvements in feed efficiency and lower methane emission losses.

The C-Lock Inc. staff of talented scientists, engineers, and technical personnel are eager to provide their expertise to support your industry. If you have an engineering problem related to energy efficiency or GHGs, we can solve it.

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Dr. Patrick Zimmerman
Dr. Patrick Zimmerman

CEO

Dr. Patrick Zimmerman was the Director of the Institute of Atmospheric Sciences and a professor in the Department of Atmospheric Sciences at the South Dakota School of Mines and Technology when he founded C-Lock Inc in 2005 he specializes in engineering education, technology development, and research. Zimmerman's research career has spanned nearly four decades. Research Profile

Scott Zimmerman
Scott Zimmerman

President and Director of Engineering

Scott Zimmerman is the director of engineering at C-Lock Inc. He has many years of experience with numerical modeling and large databases, and has a solid background in analytical measurements. He has a bachelor's degree in civil engineering from Washington State University and a master's degree in water resource engineering and hydraulics from the University of Iowa.

Tom Zimmerman
Tom Zimmerman

Chief Technology Officer

Tom Zimmerman is the lead person for parts development and assembly. He understands every part and component inside our instruments and how to repair and maintain them. He has a degree in interdisciplinary science from the South Dakota School of Mines and Technology.

Colin Murphy
Colin Murphy

Production Manager

Colin leads our production team. He manages the fabrication and assembly departments and also ensures the highest quality and functionality before any product leaves the shop. Colin earned his bachelor’s degree in Mechanical Engineering from the University of Colorado and a Master of Business Administration degree from the University of South Dakota.

Mike Billars
Mike Billars

Vice President of Engineering and Support

Mike leads our electrical engineering department, programming and also is the head of our support team. He has been instrumental in development and support of our products. He has an electrical engineering degree from the South Dakota School of Mines and Technology.

Ted Cunningham
Ted Cunningham

Sales Associate

Ted is located in south central Missouri and acquired his degrees in Animal Science and Ruminant Nutrition. Ted's experience in the beef industry range from nutrition, commercial beef production systems, seed-stock management and marketing, which provide him with a vast perspective of the beef industry. Ted, along with wife Ashlee and three children own and operate Cunningham Livestock, which specializes in custom cattle feeding and management, along with replacement heifer and bull development. He believes improvements in both feed and management efficiency for the beef business is critical for long term industry sustainability and profitability.

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Degong Pang
Dr. Degong Pang

Sales Associate

Degong is a graduate of the Swedish University of Agricultural Sciences with a PhD in animal science with specialization in animal nutrition and management. During his studies in Sweden he focused on forage quality in Nordic conditions and the effects of dietary factors on ruminant greenhouse gas emissions. Degong utilized our GreenFeed units and after 7 years of study and research with 10 journal publications, and leading several conferences he has joined our team.

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Jeff Clark
Jeff Clark

Sales Associate

Jeff is an animal science graduate of California Polytechnic State University with a concentration in beef production. His extensive background includes a direct focus on advancing animal efficiency through genetic selection based upon tangible production data such as feed efficiency and ADG. His expertise with large-scale, multi-species, purebred and commercial production management allows him to guide researchers and producers to utilize C-Lock products in extensive applications. Jeff currently lives in Rapid City with his wife and two children. His passion is for sustainability in the livestock industry, helping producers increase their production efficiency, and helping researchers advance future technology and methodology.

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