Granted Patent
Utility
US 6,214,247 · App. 09/095,398
Substrate treatment method
Inventors:
Roy V. Leverenz, John Bost
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Jun 10, 1998
Inventors
Roy V. Leverenz
John Bost
Assignee (at issue)
TDY Industries, LLC
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.