Granted Patent
Utility
US 5,082,579 · App. 07/465,903
Method and composition for delaying the gellation of borated galactomannans
Inventor:
Jeffrey C. Dawson
Patented Case
View Patent ↗
Granted: Jan 21, 1992
Filed: Jan 16, 1990
Inventor
Jeffrey C. Dawson
Assignee (at issue)
BJ SERVICES, LLC
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.