Granted Patent
Utility
US 6,263,204 · App. 09/602,670
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Inventors:
Tsutomu Kusaki, Kenichi Sakamoto, Masaru Murakami, Takashi Yokoyama
Patented Case
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Granted: Jul 17, 2001
Filed: Jun 26, 2000
Inventors
Tsutomu Kusaki
Kenichi Sakamoto
Masaru Murakami
Takashi Yokoyama
Assignee (at issue)
HITACHI, 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.