Granted Patent
Utility
US 5,716,498 · App. 08/631,240
Process for softening paper in manufacture
Inventors:
Neil A. Jenny, William J. Zeman
Patented Case
View Patent ↗
Granted: Feb 10, 1998
Filed: Apr 12, 1996
Inventors
Neil A. Jenny
William J. Zeman
Assignee (at issue)
Witco 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.