Granted Patent
Utility
US 4,654,124 · App. 06/841,984
Purifying cumene hydroperoxide
Inventors:
Carole L. Elias, Marvin C. Fields
Patented Case
View Patent ↗
Granted: Mar 31, 1987
Filed: Mar 20, 1986
Inventors
Carole L. Elias
Marvin C. Fields
Assignee (at issue)
Aristech Chemical Company
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.