Granted Patent
Utility
US 5,344,528 · App. 08/102,185
Recovery of phenol from low concentrations with sodium sulfate
Inventors:
Thomas H. Bossler, Donald Glassman, Michael C. Grebinoski, Howard H. Morgan, Jr., Jennifer L. Voss
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Aug 4, 1993
Inventors
Thomas H. Bossler
Donald Glassman
Michael C. Grebinoski
Howard H. Morgan, Jr.
Jennifer L. Voss
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.