Granted Patent
Utility
US 4,239,906 · App. 06/046,584
Method for obtaining a purified cellulose product from corn hulls
Inventors:
Richard L. Antrim, Yuk-Charn Chan, John R. Crary, Jr., Donald W. Harris
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Jun 7, 1979
Inventors
Richard L. Antrim
Yuk-Charn Chan
John R. Crary, Jr.
Donald W. Harris
Assignee (at issue)
Standard Brands Incorporated
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.