Granted Patent
Utility
US 6,440,238 · App. 09/632,797
Process for treating the surface of a component, made from a Ni based superalloy, to be coated
Inventors:
John Fernihough, Andreas Bogli, Christoph Tonnes
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Aug 4, 2000
Inventors
John Fernihough
Andreas Bogli
Christoph Tonnes
Assignee (at issue)
ALSTOM (Switzerland) Ltd
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.