Butamax Continues Biofuel Patent Crossfire With New Suit
Butamax — a joint venture of DuPont and BP PLC — says Gevo is creating isobutanol by using a yeast that contains Butamax's patented ketol-acid reductoisomerase enzymes, or KARI enzymes. The yeast structure is described in the company's U.S. Patent Number 8,222,017, issued last month.
The two companies have been locked in a series...
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