Granted Patent
Utility
US 4,722,769 · App. 06/855,232
Process for recovery of acetone
Inventors:
Chong H. Chan, Lamberto Crescentini, Everett H. Hinton, Jr.
Patented Case
View Patent ↗
Granted: Feb 2, 1988
Filed: Apr 24, 1986
Inventors
Chong H. Chan
Lamberto Crescentini
Everett H. Hinton, Jr.
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.