Granted Patent
Utility
US 5,596,129 · App. 08/409,085
Process and apparatus for producing aromatic carboxylic acid
Inventors:
Norio Murashige, Etsuro Okamoto, Shizu Suzuki
Patented Case
View Patent ↗
Granted: Jan 21, 1997
Filed: Mar 22, 1995
Inventors
Norio Murashige
Etsuro Okamoto
Shizu Suzuki
Assignee (at issue)
Mitsui Petrochemical 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.