Our Team And What We Do

Ed Lehrburger
One of three company founders, Ed is President, CEO and Board Chairman. Ed is the longest standing CEO within the cellulosic biorefining industry. He graduated from Western State College of Colorado with a business degree in 1978. Prior to co-founding PureVision, Ed was a majority owner and chief financial officer of a nationwide, commercial finance company based in Livingston, NJ. He currently serves as a director on the Colorado Hemp Advancement and Management Plan (CHAMP) Mr. Lehrburger’s primary focus is to commercialize the unique CCR technology for both pulp & paper applications and chemical production.
Carl Lehrburger
Co-founder, Chief Operations Officer, Corporate Secretary and Board Director Carl brings 40 years of executive and managerial experience in renewables, waste management and recycling. Carl graduated from the University of Colorado with a Bachelor of Arts degree in 1974 and was the first Director of the University of Colorado Environmental Center. Prior to founding PureVision in 1992, he was manager of recycling at Energy Answers Corporation, Albany, NY. He has completed environmental assessments and waste management studies for private clients, trade associations, state and federal agencies. Bear & Co publishes his first book, Secrets of Ancient America, in 2015
Dhrubojyoti Dey Laskar Ph.D.
Director of Scientific Development ​Dhrubo is an acknowledged leader in the research of lignin, biochemistry and biopolymer development. Dhrubo has published over 40 research papers on topics ranging from chemical synthesis to biomass processing/conversion. Previously he was a Senior Research Associate at Washington State University’s Center for Bioproducts and Bioenergy. He has received grants and awards from the Department of Energy, National Renewable Energy Laboratory and National Science Foundation. Dr. Laskar obtained his Ph.D. in chemistry at CSIR-NEIST, Dibrugarh University.
Nate Rotvold
TECHNICAL MANAGER / CCR Nate Rotvold is a master technical manager whose primary responsibility is to get things done with and for our technical and scientific staffs. Nate’s extensive engineering and foreman experience has provided a foundation for Nate to excel at PureHemp LLC, where he leads the team for processing the whole hemp plant and he operates and directs CCR operations, extraction operations, and overall facilities management.
Sue Hintze
DIRECTOR OF ADMINISTRATIVE SERVICES Sue Hintze, Director of Admin, is the keeper of all things administrative at PureVision Technology, Inc. and PureVision Technology LLC, parent company of PureHemp Technology LLC and Pure Kind Botanicals™. Sue serves as corporate secretary, bookkeeper, human resources specialist, and performs all administrative functions for the companies including customer service, purchasing, reception and shipping and receiving. Sue’s expertise comes from years of experience in office environments and management with companies such as Rock Island Arsenal, Mast Development and United Airlines, along with Business and Accounting education at Black Hawk Jr. College in Moline, IL.