Granted Patent
Utility
US 5,175,362 · App. 07/706,662
Recovery of acetyl values from ethylidene diacetate
Inventors:
Carl F. Fillers, Eric D. Middlemas, Hugh Miller Thompson, Jerry A. Barron, William T. Brown
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: May 29, 1991
Inventors
Carl F. Fillers
Eric D. Middlemas
Hugh Miller Thompson
Jerry A. Barron
William T. Brown
Assignee (at issue)
EASTMAN KODAK 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.