Granted Patent
Utility
US 5,287,929 · App. 08/005,997
Method of using dispersant compositions for subterranean well drilling and completion
Inventors:
James B. Bloys, Richard F. Morgan
Patented Case
View Patent ↗
Granted: Feb 22, 1994
Filed: Jan 19, 1993
Inventors
James B. Bloys
Richard F. Morgan
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.