Granted Patent
Utility
US 4,529,550 · App. 06/458,423
Hydrolysis of anhydride in the production of C.sub.5 -C.sub.9 saturated aliphatic monocarboxylic acids
Inventors:
Olan S. Fruchey, James S. Alder
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: Jan 17, 1983
Inventors
Olan S. Fruchey
James S. Alder
Assignee (at issue)
Celanese GmbH
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.