Granted Patent
Utility
US 5,290,849 · App. 07/972,338
Polymer solution for sizing paper
Inventor:
Kang I. Lee
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Nov 6, 1992
Inventor
Kang I. Lee
Assignee (at issue)
Monsanto 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.