Granted Patent
Utility
US 5,314,265 · App. 08/032,951
Waste disposal in hydraulically fractured earth formations
Inventors:
Thomas K. Perkins, Richard G. Keck
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Mar 17, 1993
Inventors
Thomas K. Perkins
Richard G. Keck
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.