Granted Patent
Utility
US 4,835,325 · App. 07/173,608
Process for producing hydroxybenzenes
Inventors:
Hisaya Miki, Shintarou Araki, Masatoshi Nitabaru
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Mar 25, 1988
Inventors
Hisaya Miki
Shintarou Araki
Masatoshi Nitabaru
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.