Granted Patent
Utility
US 6,497,842 · App. 09/763,368
Quantitative chromatographic measuring device and method for manufacturing the same
Inventors:
Mie Takahashi, Masataka Nadaoka, Hirotaka Tanaka
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Feb 21, 2001
Inventors
Mie Takahashi
Masataka Nadaoka
Hirotaka Tanaka
Assignee (at issue)
SUMITOMO ELECTRIC 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.