Granted Patent
Utility
US 5,164,099 · App. 07/623,013
Encapsulations for treating subterranean formations and methods for the use thereof
Inventors:
D. V. Satyanarayana Gupta, Aidan P. Cooney
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Dec 6, 1990
Inventors
D. V. Satyanarayana Gupta
Aidan P. Cooney
Assignee (at issue)
Western Company of North America
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.