WEST CHESTER, Ohio,
March 22, 2013 /PRNewswire/
-- AK Steel (NYSE: AKS) said that the United States Court of Appeals for the
Federal Circuit denied, on March 20,
2013, ArcelorMittal's petition for re-hearing in its patent
infringement lawsuit involving aluminized boron steel.
This week's court decision again confirms that AK Steel does not
infringe the patent and can sell its ULTRALUME® aluminized boron
steel product. AK Steel's ULTRALUME® product is utilized for
hot-stamped, press-hardened applications where the ultimate tensile
strength is less than 1,500 MPa.
AK Steel's ULTRALUME® is an advanced high-strength steel that is
growing in popularity for various automotive applications. AK
Steel said that ULTRALUME® has been accepted for use by numerous
automotive original equipment manufacturers (OEMs).
AK Steel
AK Steel produces flat-rolled carbon,
stainless and electrical steels, primarily for automotive,
infrastructure and manufacturing, construction and electrical power
generation and distribution markets. The company employs
about 6,100 men and women in Middletown, Mansfield, Coshocton and Zanesville, Ohio; Butler, Pennsylvania; Ashland, Kentucky; Rockport, Indiana; and its corporate
headquarters in West Chester,
Ohio. Additional information about AK Steel is available on
the company's web site at www.aksteel.com.
AK Tube LLC, a wholly-owned subsidiary of AK Steel, employs
about 300 men and women in plants in Walbridge, Ohio and Columbus, Indiana.
AK Tube produces carbon and stainless electric resistance welded
(ERW) tubular steel products for truck, automotive and other
markets. Additional information about AK Tube LLC is
available on its web site at www.aktube.com.
AK Coal Resources, Inc., another wholly-owned subsidiary of AK
Steel, controls and is developing metallurgical coal reserves in
Somerset County,
Pennsylvania. AK Steel also owns 49.9% of Magnetation LLC, a
joint venture headquartered in Grand
Rapids, Minnesota, which produces iron ore concentrate from
previously mined ore reserves.
SOURCE AK Steel