Granted Patent
Utility
US 5,080,170 · App. 07/592,096
Method for reducing fluid leak-off during well treatment
Inventors:
Lee E. Whitebay, Lisa A. Cantu
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Oct 3, 1990
Inventors
Lee E. Whitebay
Lisa A. Cantu
Assignee (at issue)
Conoco Inc.
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.