Granted Patent
Utility
US 5,939,475 · App. 08/697,970
Organic fluid systems containing clay/polyamide compositions
Inventors:
William Reynolds, Glen Hawthorne
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Sep 3, 1996
Inventors
William Reynolds
Glen Hawthorne
Assignee (at issue)
Rheox 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.