Granted Patent
Utility
US 5,264,087 · App. 07/959,956
Method for refining acetic anhydride by distillation
Inventors:
H. Ford Lowery, Steven Leroy Cook, Vicky K. Pinto
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Oct 13, 1992
Inventors
H. Ford Lowery
Steven Leroy Cook
Vicky K. Pinto
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.