Granted Patent
Utility
US 6,025,501 · App. 09/103,856
Derivatized polymers of .alpha.-olefin-maleic anhydride alkyl half-ester or full acid
Inventors:
Herbert Ulmer, Timothy Gillece, John Katirgis, Linda C. Foltis, April Blaine
Patented Case
View Patent ↗
Granted: Feb 15, 2000
Filed: Jun 24, 1998
Inventors
Herbert Ulmer
Timothy Gillece
John Katirgis
Linda C. Foltis
April Blaine
Assignee (at issue)
ISP INVESTMENTS LLC
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.