Granted Patent
Utility
US 4,477,418 · App. 06/525,716
Process for adsorption
Inventors:
Joseph Timothy Mullhaupt, Oren E. Berwaldt
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Aug 23, 1983
Inventors
Joseph Timothy Mullhaupt
Oren E. Berwaldt
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.