Granted Patent
Utility
US 4,716,186 · App. 06/849,930
Starch derivatives and methods of making using same
Inventors:
Norman A. Portnoy, Larry P. Avery
Patented Case
View Patent ↗
Granted: Dec 29, 1987
Filed: Apr 9, 1986
Inventors
Norman A. Portnoy
Larry P. Avery
Assignee (at issue)
A.E. Staley Manufacturing 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.