Granted Patent
Utility
US 6,682,613 · App. 10/063,250
Process for making high strength micro-alloy steel
Inventors:
Dengqi Bai, Michael Ambrose Cooke, James Asante, Jonathan Dorricott
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Apr 3, 2002
Inventors
Dengqi Bai
Michael Ambrose Cooke
James Asante
Jonathan Dorricott
Assignee (at issue)
IPSCO Enterprises, Inc.
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.