Granted Patent
Utility
US 5,906,921 · App. 09/159,686
Biosensor and method for quantitative measurement of a substrate using the same
Inventors:
Shin Ikeda, Toshihiko Yoshioka, Shiro Nankai
Patented Case
View Patent ↗
Granted: May 25, 1999
Filed: Sep 24, 1998
Inventors
Shin Ikeda
Toshihiko Yoshioka
Shiro Nankai
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.