Granted Patent
Utility
US 6,035,934 · App. 09/028,624
Method and system for separating and injecting gas in a wellbore
Inventors:
Mark D. Stevenson, Jerry L. Brady, John M. Klein, James L. Cawvey
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: Feb 24, 1998
Inventors
Mark D. Stevenson
Jerry L. Brady
John M. Klein
James L. Cawvey
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.