Granted Patent
Utility
US 5,773,518 · App. 08/911,890
Esterified styrene/maleic anhydride polymer
Inventors:
Charles R. Keil, Randall W. Kautz
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Aug 15, 1997
Inventors
Charles R. Keil
Randall W. Kautz
Assignee (at issue)
Morton International, 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.