Granted Patent
Utility
US 5,266,497 · App. 07/753,231
Immunochromatographic assay with improved colored latex
Inventors:
Senzo Imai, Yoshiko Kouda, Toru Nishihara, Masahiko Kinoshita
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Aug 30, 1991
Inventors
Senzo Imai
Yoshiko Kouda
Toru Nishihara
Masahiko Kinoshita
Assignees (at issue)
Japan Synthetic Rubber Corporation
ROHTO PHARMACEUTICAL CO., 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.