Granted Patent
Utility
US 4,298,765 · App. 06/134,040
Purification of phenol with reduced energy consumption
Inventors:
Jerry Cochran, Thomas H. Insinger, Gerald E. Hollenbach, Ronald F. Piskorz, Addison M. Smith
Patented Case
View Patent ↗
Granted: Nov 3, 1981
Filed: Mar 26, 1980
Inventors
Jerry Cochran
Thomas H. Insinger
Gerald E. Hollenbach
Ronald F. Piskorz
Addison M. Smith
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.