Granted Patent
Utility
US 4,169,798 · App. 05/845,000
Well-treating compositions
Inventor:
Ronald N. DeMartino
Patented Case
View Patent ↗
Granted: Oct 2, 1979
Filed: Oct 25, 1977
Inventor
Ronald N. DeMartino
Assignee (at issue)
Celanese GmbH
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.