Granted Patent
Utility
US 4,572,098 · App. 06/415,862
Liquid smoke-impregnation of fibrous food casings
Inventor:
Herman S. Chiu
Patented Case
View Patent ↗
Granted: Feb 25, 1986
Filed: Sep 8, 1982
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.