Granted Patent
Utility
US 4,567,300 · App. 06/690,252
Process for producing N-substituted formamides
Inventors:
Yoshikazu Murao, Shigeru Sawayama, Kohichi Satoh
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: Jan 10, 1985
Inventors
Yoshikazu Murao
Shigeru Sawayama
Kohichi Satoh
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.