Granted Patent
Utility
US 5,880,180 · App. 08/938,363
Aldimine surface quality enhancers
Inventor:
Cynthia L. Smith
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Sep 26, 1997
Inventor
Cynthia L. Smith
Assignee (at issue)
Ashland, Inc.
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.