Granted Patent
Utility
US 6,653,522 · App. 09/289,781
Hot melt adhesives based on sulfonated polyesters comprising wetness indicator
Inventors:
Mitchell Blumenthal, Charles W. Paul
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Apr 9, 1999
Inventors
Mitchell Blumenthal
Charles W. Paul
Assignee (at issue)
National Starch and Chemical Investment Holding Copporation
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.