Granted Patent
Utility
US 4,352,882 · App. 06/299,709
Production of xanthan gum by emulsion fermentation
Inventor:
Lucien G. Maury
Patented Case
View Patent ↗
Granted: Oct 5, 1982
Filed: Sep 8, 1981
Inventor
Lucien G. Maury
Assignee (at issue)
Kelco Biospecialties Ltd.
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.