Granted Patent
Utility
US 4,476,317 · App. 06/458,410
Process for the production of methylenedicarbanilates
Inventor:
Keisuke Wada
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Jan 17, 1983
Inventor
Keisuke Wada
Assignee (at issue)
Mitsubishi Chemical 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.