Granted Patent
Utility
US 5,710,334 · App. 08/453,073
Aromatic dinitro and diamino intermediates
Inventors:
Yuko Ishihara, Mitsunori Matsuo, Keizaburo Yamaguchi, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Jan 20, 1998
Filed: May 26, 1995
Inventors
Yuko Ishihara
Mitsunori Matsuo
Keizaburo Yamaguchi
Akihiro Yamaguchi
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.