Granted Patent
Utility
US 4,851,086 · App. 06/547,403
Production of high purity phenol by steam distillation
Inventors:
Ali M. Khonsari, Jamin Chen, George D. Suciu, William B. Fisher, Lamberto Crescentini
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Oct 31, 1983
Inventors
Ali M. Khonsari
Jamin Chen
George D. Suciu
William B. Fisher
Lamberto Crescentini
Assignees (at issue)
Lummus Corporation
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.