Granted Patent
Utility
US 4,740,281 · App. 06/917,464
Recovery of acids from materials comprising acid and salt
Inventors:
Frederick P. Chlanda, Yu-Chih Chiao, Krishnamurthy N. Mani
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Oct 14, 1986
Inventors
Frederick P. Chlanda
Yu-Chih Chiao
Krishnamurthy N. Mani
Assignee (at issue)
ALLIED CONSULTING, 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.