Granted Patent
Utility
US 6,692,819 · App. 09/477,685
Method of transparentizing a cellulose substrate
Inventors:
William J. Castle, Rajendra Mehta
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Jan 6, 2000
Inventors
William J. Castle
Rajendra Mehta
Assignee (at issue)
Standard Register, 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.