Granted Patent
Utility
US 5,693,279 · App. 08/614,708
Starch acetate and blends thereof with metal chelates
Inventors:
Bernice I. Feuer, John M. Bronk
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Mar 13, 1996
Inventors
Bernice I. Feuer
John M. Bronk
Assignee (at issue)
Hoechst Celanese Corporation
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.