Grimm Engineering, Inc. is an independent engineering consulting firm established in 1981 with broad experience in petroleum refining, natural gas processing, and petrochemicals. The company provides technology for refinery and natural gas processes in the form of technical and economic feasibility studies, process licenses, detailed process designs, and fabricated modular units utilizing J-V arrangements with established fabrication shops. Grimm Engineering, Inc. owns proprietary designs for the processing of waste motor oil.