Granted Patent
Utility
US 6,716,494 · App. 10/214,776
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Inventors:
Hideki Nakanishi, Noboru Yamada, Junichi Iida
Patented Case
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Granted: Apr 6, 2004
Filed: Aug 9, 2002
Inventors
Hideki Nakanishi
Noboru Yamada
Junichi Iida
Assignees (at issue)
SEIKO EPSON CORPORATION
DAICEL CHEMICAL 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.