Granted Patent
Utility
US 4,316,012 · App. 06/182,504
Recovery of xanthan gum
Inventors:
Michael B. Inkson, Clive Wilkinson
Patented Case
View Patent ↗
Granted: Feb 16, 1982
Filed: Aug 29, 1980
Inventors
Michael B. Inkson
Clive Wilkinson
Assignee (at issue)
Talres Development (N.A.) N.V.
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.