Granted Patent
Utility
US 5,382,733 · App. 08/034,343
Process for preparing naphthalene or derivative thereof
Inventors:
Masayuki Otake, Akio Nakanishi
Patented Case
View Patent ↗
Granted: Jan 17, 1995
Filed: Mar 19, 1993
Inventors
Masayuki Otake
Akio Nakanishi
Assignee (at issue)
Mitsubishi Kasei Corporation
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.