Granted Patent
Utility
US 5,618,632 · App. 08/474,370
Method of forming a strengthened bond in a paperboard product and products therefrom
Inventors:
R. Kenneth Watkins, James Wright, William Culhane
Patented Case
View Patent ↗
Granted: Apr 8, 1997
Filed: Jun 7, 1995
Inventors
R. Kenneth Watkins
James Wright
William Culhane
Assignee (at issue)
The Mead 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.