Granted Patent
Utility
US 4,339,364 · App. 06/173,635
Water resistant starch-based corrugating adhesive composition
Inventor:
Paul L. Krankkala
Patented Case
View Patent ↗
Granted: Jul 13, 1982
Filed: Jul 30, 1980
Inventor
Paul L. Krankkala
Assignee (at issue)
Champion International Corporation Limited
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.