Granted Patent
Utility
US 4,456,774 · App. 06/540,915
Bulk separation of polyhydric alcohols by selective adsorption on zeolitic molecular sieves
Inventors:
John D. Sherman, Chien-Chung Chao
Patented Case
View Patent ↗
Granted: Jun 26, 1984
Filed: Oct 13, 1983
Inventors
John D. Sherman
Chien-Chung Chao
Assignee (at issue)
Union Carbide Corporation
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.