Granted Patent
Utility
US 5,998,508 · App. 08/978,073
Aqueous dispersions of polyamide-amine derived from aminoalkylpiperazine with epoxy resin
Inventors:
Larry S. Corley, Derek Scott Kincaid, Glenda Carole Young
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Nov 25, 1997
Inventors
Larry S. Corley
Derek Scott Kincaid
Glenda Carole Young
Assignee (at issue)
SHELL OIL 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.