Granted Patent
Utility
US 5,651,869 · App. 08/605,391
Biosensor
Inventors:
Toshihiko Yoshioka, Shin Ikeda, Shiro Nankai
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Feb 22, 1996
Inventors
Toshihiko Yoshioka
Shin Ikeda
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.