Granted Patent
Utility
US 4,394,178 · App. 06/329,501
Bulk lactulose/lactose separation by selective adsorption on zeolitic molecular sieves
Inventors:
Chien-Chung Chao, John D. Sherman
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Dec 10, 1981
Inventors
Chien-Chung Chao
John D. Sherman
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.