Butamax Expands Intellectual Property Portfolio with Innovative Biofuel Patent

Butamax Expands Intellectual Property Portfolio with Innovative Biofuel Patent

PR Newswire

WILMINGTON, Del., Sept. 25, 2012

WILMINGTON, Del., Sept. 25, 2012 /PRNewswire/ --Butamax™ Advanced Biofuels,
LLC, global biofuel technology leader, announced today that the United States
Patent and Trademark Office (USPTO) has granted Butamax Patent Number
8,273,558 ('558 patent). The innovative '558 patent technology provides a path
to commercial production volumes of biobutanol for the global biofuel and
other markets.

(Logo: http://photos.prnewswire.com/prnh/20120209/MM50763LOGO )

Butamax has specifically designed its microorganism to be cost-effective for
all markets, but particularly for biofuel blending. While unmodified yeast
may produce trace amounts of isobutanol via a different pathway than Butamax's
inventions, these unmodified yeasts only express certain enzymes in smaller
compartments of the cell. This limits the availability of these enzymes to
convert sugar to biobutanol in significant quantities and at high rates.
Butamax developed modified genes that express key enzymes in the larger
'cytosol' area of the cell. This innovation, which is protected by the '558
patent allows for increased expression of these enzymes resulting in a
significant increase in the volume and rate of isobutanol produced. This
technology is critical for the commercial scale production needed to enable
the global biofuels market. The '558 patent, which was filed from a 2005
priority application, also protects blending the isobutanol produced through
the modified yeast cells with fossil fuels.

Since 2004, the Butamax team has relentlessly pioneered new technology to
minimize the cost of manufacture for biobutanol for fuels and other markets.
The company continues its commitment to developing and demonstrating its
technology for successful market introduction into the global biofuels arena.
Butamax constructed the first purpose-built bio-isobutanol demonstration
facility located in Hull, England. Recently, the facility provided biobutanol
to BP for its use in fueling portions of the Olympic fleet. Optimization of
Butamax technology continues at this facility, prior to retrofit of a
commercial facility and fuels market entry in 2014.

With this very deliberate approach to technology development and demonstration
based on the tried and tested experience of BP and DuPont, Butamax continues
to innovate in the areas of biocatalyst, engineering design, product recovery
and end-use applications to deliver maximum value to our customers, partners
and investors, and drive the biofuel industry forward. Butamax offers unique
and comprehensive biofuel experience and the grant of the '558 patent further
demonstrates the strength of its fuels expertise.

About Butamax

Butamax™ Advanced Biofuels, LLC, a joint venture between BP and DuPont, was
formed to develop and commercialize biobutanol as a next generation renewable
biofuel for the transport market. The company benefits from the synergy of
DuPont's proven industrial biotechnology experience and BP's global fuels
market knowledge. Butamax's proprietary technology offers a cost-advantaged
manufacturing process for isobutanol with value from field to pump. For more
information, visit www.butamaxpatents.com.

Butamax™ is a trademark of Butamax™ Advanced Biofuels, LLC.

Media Contact:
Pam Schools 910-777-7119
pamela.schools@butamax.com



SOURCE Butamax Advanced Biofuels, LLC

Website: http://www.butamax.com