Granted Patent
Utility
US 4,377,187 · App. 06/301,275
Liquid smoke impregnated fibrous food casing
Inventor:
Herman S. Chiu
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Sep 11, 1981
Inventor
Herman S. Chiu
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.