Granted Patent
Utility
US 4,544,778 · App. 06/645,215
Bulk separation of sorbitol by selective adsorption on zeolitic molecular sieves
Inventors:
Chien-Chung Chao, John D. Sherman
Patented Case
View Patent ↗
Granted: Oct 1, 1985
Filed: Aug 29, 1984
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.