Granted Patent
Utility
US 4,292,451 · App. 06/057,397
High mannitol process (alkaline hydrogenation in presence of alkali metal carbonate)
Inventors:
Albert DeBerardinis, Walter M. Kruse
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Jul 13, 1979
Inventors
Albert DeBerardinis
Walter M. Kruse
Assignee (at issue)
ICI Americas, Inc.
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.