Granted Patent
Utility
US 6,607,646 · App. 09/950,911
Cathodic electrocoating compositions containing hydroxyl-carbonate blocked polyisocyanate crosslinking agent
Inventor:
Allisa Gam
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Sep 12, 2001
Inventor
Allisa Gam
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.