Granted Patent
Utility
US 5,620,049 · App. 08/572,630
Method for increasing the production of petroleum from a subterranean formation penetrated by a wellbore
Inventors:
Larry J. Gipson, Carl T. Montgomery
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: Dec 14, 1995
Inventors
Larry J. Gipson
Carl T. Montgomery
Assignee (at issue)
Atlantic Richfield Company
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.