Granted Patent
Utility
US 5,011,621 · App. 07/532,766
Paint stripper compositions containing N-methyl-2-pyrrolidone and renewable resources
Inventor:
Carl J. Sullivan
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Jun 4, 1990
Inventor
Carl J. Sullivan
Assignee (at issue)
Arco Chemical Technology, L.P.
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.