Granted Patent
Utility
US 5,679,270 · App. 08/673,019
Method for removing ceramic material from castings using caustic medium with oxygen getter
Inventors:
Thomas John Oliver Thornton, Julie A. Faison, Neil E. Paton
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jul 1, 1996
Inventors
Thomas John Oliver Thornton
Julie A. Faison
Neil E. Paton
Assignee (at issue)
Howmet Research 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.