Granted Patent
Utility
US 6,019,910 · App. 08/995,449
Etching tri-metal layers to form electronic circuits using aqueous alkaline solutions including nitrates
Inventors:
Achyuta Achari, Delin Li
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Dec 22, 1997
Inventors
Achyuta Achari
Delin Li
Assignee (at issue)
Ford Motor Company
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.