Granted Patent
Utility
US 4,219,582 · App. 06/024,936
Xanthan gum and locust bean gum in confectionery use
Inventor:
Hsiung-Kuei Cheng
Patented Case
View Patent ↗
Granted: Aug 26, 1980
Filed: Mar 29, 1979
Inventor
Hsiung-Kuei Cheng
Assignee (at issue)
MERCK & CO., INC.
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.