Granted Patent
Utility
US 6,599,371 · App. 10/119,444
Hydrogen peroxide pickling scheme for silicon-containing electrical steel grades
Inventors:
Vijay N. Madi, Jerald W. Leeker, Clayton A. Van Scoy
Patented Case
View Patent ↗
Granted: Jul 29, 2003
Filed: Apr 9, 2002
Inventors
Vijay N. Madi
Jerald W. Leeker
Clayton A. Van Scoy
Assignee (at issue)
AK Steel Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.