Granted Patent
Utility
US 5,176,849 · App. 07/868,434
Composition and method for scavenging oxygen
Inventors:
Chih M. Hwa, Dionisio G. Cuisia, Ronald L. Oleka
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: Apr 15, 1992
Inventors
Chih M. Hwa
Dionisio G. Cuisia
Ronald L. Oleka
Assignee (at issue)
W.R. Grace & Co. Conn.
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.