Granted Patent
Utility
US 5,051,140 · App. 07/489,443
Surface treatment method for titanium or titanium alloy
Inventors:
Moriyuki Mushiake, Kenichi Asano, Noriyuki Miyamura
Patented Case
View Patent ↗
Granted: Sep 24, 1991
Filed: Mar 6, 1990
Inventors
Moriyuki Mushiake
Kenichi Asano
Noriyuki Miyamura
Assignee (at issue)
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
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.