Security Agreement

Recorded: 2011-04-28 Received: 2011-04-28 Pages: 21

Assignor

AK STEEL CORPORATION

Executed: 2011-04-28

Assignee

BANK OF AMERICA, N.A., AS AGENT

20975 SWENSON DRIVE, SUITE 200, WAUKESHA, WI, 53186, UNITED STATES

Covered Properties (7)

Settling Tank and Method for Separating a Solids Containing Material

Application: 10/970,953 →

Apparatus for Removing Hydrogen Peroxide from Spent Pickle Liquor

Application: 10/683,717 →

Shale Bin/Settling Tank/Centrifuge Combination Skid

Application: 10/366,050 →

Hydrogen Peroxide Pickling Scheme for Stainless Steel Grades

Application: 10/118,765 →

Apparatus and Method for Removing Hydrogen Peroxide from Spent Pickle Liquor

Application: 10/119,112 →

Hydrogen Peroxide Pickling Scheme for Silicon-Containing Electrical Steel Grades

Application: 10/119,444 →

Antimicrobial Coated Metal Sheet

Application: 09/938,205 →