Simple-Fill Inc. has raised $1.7 million from Worthington Industries Inc. and other investors toward making its next generation of lower-cost natural gas compressors. The Ohio State University spinoff also has moved its operations to the Columbus plant of Parker Hannifin Corp. (NYSE:PH). The Cleveland-based manufacturer produces several components and has helped with engineering for the compressor, which uses liquid instead of thousands of spinning parts to compress the gas into usable vehicle fuel. Simple-Fill...