Granted Patent
Utility
US 5,482,986 · App. 08/272,829
Benzopyran compound and use of the same
Inventors:
Akira Ogiso, Tsutami Misawa, Rihoko Imai, Hisato Itoh
Patented Case
View Patent ↗
Granted: Jan 9, 1996
Filed: Jul 11, 1994
Inventors
Akira Ogiso
Tsutami Misawa
Rihoko Imai
Hisato Itoh
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.