Granted Patent
Utility
US 6,517,120 · App. 09/830,601
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Inventors:
Atsuo Miyajima, Kazushige Sakazaki, Akira Takayanagi, Tomohide Ito
Patented Case
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Granted: Feb 11, 2003
Filed: Apr 27, 2001
Inventors
Atsuo Miyajima
Kazushige Sakazaki
Akira Takayanagi
Tomohide Ito
Assignee (at issue)
TOKAI RUBBER INDUSTRIES, 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.