Granted Patent
Utility
US 4,552,674 · App. 06/524,515
Composition and method for treating a subterranean formation
Inventors:
Richard A. Brown, Robert D. Norris
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Aug 19, 1983
Inventors
Richard A. Brown
Robert D. Norris
Assignee (at issue)
FMC CORPORATION
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.