The PureVision Team


ed lehrburger - purevision technology Ed Lehrburger, one of three company founders, 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 on the Industrial Hemp Advisory Committee for the Colorado State General Assembly, the Technical Advisory Board of the National Hemp Association and on the Board of Directors of ZeaChem, Inc. Mr. Lehrburger’s primary focus is to commercialize the unique CCR technology.

carl-lehrburger 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. His first book, Secrets of Ancient America is published by Bear & Co.

dr-dhrubo-laskar Dhrubojyoti Dey Laskar Ph.D., Director of Scientific Development. 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.

David-DeCosta David DeCoster, Director of Process Development. David has over 38 years of industrial experience with expertise in research, development and commercialization with an emphasis on green technology and environmental impact minimization. With over 30 patents, David brings his engineering experience and expertise to PureVision including pilot plant operations, biochemicals, petrochemicals, polymers, organic chemistry and material science. He earned his Chemical Engineering at Northwestern University and a B.A. in General Science from Grinnell College.

Casey-Ives-2-web Casey Ives, Director of Business Development, is driving new client and partner relationships and is involved in financing initiatives, sustainability programs and serves as an executive manager of PureHemp. Casey joined PureVision in 2012 after 25 years of technical executive and management experience in sales and marketing, engineering and sustainability. He spent many years with IBM and CA Technologies, was the President at Integrated Research and has also led successful growth and turn-around initiatives for other IT software firms. Casey earned his BBA from Western State College and a Certificate in Sustainability from the University of Denver. Casey has a passion for the increased use of renewable resources and is involved with social and environmental nonprofits in Colorado.

Don Cha, J.D., Ph.D. (MIT) Intellectual Property and Patent Counsel Dr. Cha has been practicing intellectual property law for over 13 years, is PureVision’s in-house Patent Counsel. He previously served as a member of the PureVision Board of Directors from 2007 thru March 2015 and presently is a member of the Technical Advisory Board. He received his J.D. in Law at Temple University and a Ph.D. in Organic Chemistry at MIT. A seasoned patent attorney, Dr. Cha provides valuable IP expertise to PureVision and is instrumental in providing IP strategies and developing new patents.

The experienced PureVision Team also includes Process Chemists, Process and Mechanical Engineers, Lab Technicians, a Safety Officer, and Director of Human Resources and Administration.

Board of Directors

Ed Lehrburger, founder, President and Chairman.

Carl Lehrburger, founder and Chief Operations Officer and Corporate Secretary

James R. Hettenhaus, Director, is co-founder of CEA Inc. and an entrepreneur in the biomass conversion industry since 1995. Mr. Hettenhaus is a recognized expert in many areas of biorefining operations including feedstock supply and downstream biomass and chemical processing and adds business and industry expertise to the PureVision Board. 

Dr. Ronal Larson, Director, is a retired Professor (Electrical Engineering at Georgia Tech), former Principal Scientist at SERI (now the National Renewable Energy Laboratory) and former Chair of the American Solar Energy Society. As a Director he provides valuable expertise, guidance and contacts for PureVision.

Business Advisory Board

PureVision has established a Business Advisory Board (BAB) comprised of experienced individuals who contribute a wide range of expertise in the broad area of business development. The BAB provides PureVision’s senior management team with important insights, knowledge and experience with a focus on advancing PureVision Technology toward commercialization.

Dr. Dan PerlmanDr. Daniel Perlman, M.D., M.B.A.
Dr. Perlman advises start-up technology companies and is the chairman of PureVision’s Business Advisory Board. Dr. Perlman was the founder and manager of a successful Denver-based company for eight years, comprised of a group of doctors specializing in internal medicine. His academic credentials include an Executive MBA from the Daniels College of Business at the University of Denver, a Master’s Degree from the University of Minnesota School of Public Health, and a Medical Degree from University of Maryland School of Medicine. Dr. Perlman currently sits on several boards, and is active in the Colorado BioScience Association.

Dr. Richard NakashimaDr. Richard Nakashima
Dr. Nakashima received his Ph.D. in Medical Science (Pharmacology) from the Medical College of Ohio. After post-doctoral work in cancer cell metabolism and protein chemistry at the Johns Hopkins University School of Medicine, Dr. Nakashima was an Assistant Professor of Biochemistry at Texas Tech University. Dr. Nakashima later obtained his juris doctorate and has worked as a patent attorney for the last 13 years. He is currently the Vice President for Intellectual Property at Immunomedics, Inc. Dr. Nakashima has worked extensively with start-up companies, with a special interest in high-tech companies in the biofuels industry.

Steve-Meller-photo Dr. Steve Meller
Dr. Meller is now a Silicon Valley-based entrepreneur, venture capitalist and Board Advisor after successful careers in the corporate and academic world. Since an early retirement in late 2012, from a successful corporate executive career at P&G as Chief Innovation Catalyst, Dr. Meller has founded or co-founded four companies in the healthcare, tech, sustainability and engineering sectors. Dr. Meller is originally from Adelaide, South Australia. He received his B.Sc., B.Sc. (Hons.), and PhD in Neuroscience from the University of Adelaide.

Dyandra A. Grenier Dyandra has a B.S. in Electrical Engineering from Purdue University and an MBA from Indiana University. She has over 25 years of experience in the automotive industry. Dyandra has two patents in consumer products and has spent over 25 years working to save endangered species.

Technical Advisory Board

PureVision has established a Technical Advisory Board (TAB), comprised of experienced individuals who contribute a great deal of expertise in the broad area of cellulosic biomass utilization. The TAB provides PureVision's senior technical team with important hands-on knowledge and experience with a focus on advancing the PureVision Technology toward commercialization. The following individuals make up the PureVision TAB.

Joy PetersonJoy Doran Peterson, Ph.D. is Director of the Biofuels, Biopower, and Biomaterials Initiative (B3I) at the University of Georgia, a Professor in the Microbiology Department, and a member of the Faculty of Engineering at the UGA. The B3Initiative is an 80-member group of faculty and staff synergized to bring focused effort to addressing our transition from a petrol-based economy to a bio-based economy. Dr. Peterson received her undergraduate degree from the University of Georgia and her PhD from the University of Florida. Dr. Peterson's laboratory at UGA has four major foci: 1) mining microbial diversity for new organisms, enzymes, and antimicrobials; 2) developing methods for disrupting biomass to release sugars; 3) improving existing fermentation processes; and 4) integrating all of the above for an economically viable process. She also consults regularly for industry and the investment community. She has presented cellulosic ethanol-related talks on numerous occasions in the U.S. and overseas, and has shared information with members of the US Government on Capitol Hill.

Harry CullinanHarry Cullinan, Ph.D. is a member of PureVision’s TAB and the Chairman of PureHemp Technology’s Technical Advisory Board. Dr. Cullinan was Director of the Alabama Center for Paper and Bioresource Engineering at Auburn University where he focused on research and education programs for the pulp and paper industry, alternative fuels and biorefining. Dr. Cullinan also was a Professor of Chemical Engineering at Auburn. Previous positions include Head of the Department of Chemical Engineering at SUNY-Buffalo, Vice President of the Institute of Paper Chemistry in Appleton, WI, and Professor –Director of the Australian Pulp and Paper Institute at Monash University in Melbourne, Australia. He also was founder and first president of the Pulp and Paper Education and Research Alliance and a founder of the National Network for Pulp and Paper Technology Training. Dr. Cullinan serves on the Chief Technology Officers Committee of Agenda 2020 and the Board of Directors of the Auburn Pulp and Paper Foundation. He has also served on the Board of Directors of a number of organizations, including TAPPI and PIMA. Cullinan is a TAPPI Fellow and the recipient of TAPPI's Distinguished Service Award. During 2009, Dr. Cullinan was inducted
into the Paper Industry International Hall of Fame..

Bin YangBin Yang, Ph.D. is an Assistant Professor with the Center for Bioproducts and Bioenergy at Washington State University, Tri-Cities. Dr. Yang earned his B.S. ('86) in Microbiology and M.Sc. ('93) in Chemical Engineering from Northwestern University in China. He received his Ph.D. ('96) in Food Engineering from South China University of Technology, China. Prior to going to WSU, he was an Associate Research Engineer with the Center for Environmental Research and Technology at the University of California, Riverside and was a Research Scientist in the Thayer School of Engineering at Dartmouth College. He held postdoctoral positions at the HUA (China) and the University of British Columbia (Canada). Dr. Yang has dedicated most of his career to the development of renewable energy technologies with particular emphasis on production of ethanol and other commodity products from cellulosic biomass. He has authored more than 50 peer-reviewed papers and book chapters, made more than 60 presentations, many invited, written over 9 technical reports, and 5 patents. He is currently an advisory editor board member for Biofuels, Bioproducts & Biorefining, Recent Patents on Food, Nutrition & Agriculture, and Biofuels. He also served as a reviewer for various U.S. and international programs on Bioenergy.

Evan EvansEvan Evans, a registered Professional Engineer, has been engaged exclusively in the energy efficiency and renewable energy fields since 1979, and also in greenhouse gas (GHG) emissions management since 1995. His work encompasses comprehensive energy infrastructure master planning and GHG emissions management planning performed for governments and corporations worldwide. Mr. Evans has a 30-year track record of engagement in feasibility studies of the full gamut of renewable energy technologies, central energy plant performance improvements, design assistance for new commercial building construction, energy performance improvements in industrial facilities, quantification of GHG offsets from efficiency and renewable energy projects, and development of GHG emissions management strategies for corporations. Mr. Evans began his career in 1979 at the SERI (now the National Renewable Energy Laboratory). His work has included an extensive body of renewable energy and GHG mitigation projects. Recently, his focus has been on next-generation technologies for producing renewable electricity, renewable thermal energy, and renewable fuels from biomass and municipal solid waste. He received an MS in Energy Engineering from the University of Colorado and a BS in Urban Planning from Southern Methodist University.