Granted Patent
Utility
US 5,824,797 · App. 08/494,481
Guar as a deposition and bioefficacy aid
Inventor:
James Lyle Hazen
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Jun 26, 1995
Inventor
James Lyle Hazen
Assignee (at issue)
Rhone-Poulenc, 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.