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Environment

DuPont wins landmark patent

February 27, 2006 | A version of this story appeared in Volume 84, Issue 9

The U.S. Patent & Trademark Office awarded U.S. Patent 7,000,000 to a DuPont scientist for the invention of a sugar-derived textile fiber. John P. O'Brien, a senior researcher, received the patent for inventing cottonlike polysaccharide fibers. The biomass-based fiber represents DuPont's 33,801st patent since the company was awarded its first one in 1804 for a gunpowder-granulating machine.

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