JOHNSTON, Iowa, December 8, 2017 - The U.S. Patent and Trademark Office published this week a new patent application (U.S. 62/345,399) from the Iowa Corn Promotion Board (ICPB) adding to a previously issued U.S. patent on a proprietary production method using corn in the industrial manufacturing of a raw material called monoethylene glycol (MEG). MEG is an industrial chemical used in the manufacture of antifreeze, plastic bottles for pop or bottled water, and polyester clothes.