Granted Patent
Utility
US 4,582,546 · App. 06/745,376
Method of pretreating cold rolled sheet to minimize annealing stickers
Inventors:
James E. Bird, Colin Hamilton, Robert M. Hudson
Patented Case
View Patent ↗
Granted: Apr 15, 1986
Filed: Jun 17, 1985
Inventors
James E. Bird
Colin Hamilton
Robert M. Hudson
Assignee (at issue)
United States 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.