Granted Patent
Utility
US 4,613,700 · App. 06/692,475
Process for producing aromatic aldehydes
Inventors:
Takao Maki, Toshiharu Yokoyama
Patented Case
View Patent ↗
Granted: Sep 23, 1986
Filed: Jan 18, 1985
Inventors
Takao Maki
Toshiharu Yokoyama
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.