Granted Patent
Utility
US 5,162,076 · App. 07/278,062
Method for purification of acids from materials comprising acid and salt
Inventors:
Yu-Chih Chiao, Frederick P. Chlanda, Krishnamurthy N. Mani
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: Nov 30, 1988
Inventors
Yu-Chih Chiao
Frederick P. Chlanda
Krishnamurthy N. Mani
Assignee (at issue)
AlliedSignal, 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.