Granted Patent
Utility
US 4,440,788 · App. 06/336,377
Cysteine derivatives
Inventors:
Hiroshi Terayama, Yoshiharu Morita, Kohei Umezu
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Dec 30, 1981
Inventors
Hiroshi Terayama
Yoshiharu Morita
Kohei Umezu
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.