Granted Patent
Utility
US 4,592,918 · App. 06/556,460
Tar-depleted aqueous liquid smoke composition
Inventor:
Herman S. Chiu
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Nov 30, 1983
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.