Granted Patent
Utility
US 4,427,670 · App. 06/347,557
Skin preparation
Inventors:
Kunihiko Ofuchi, Koichiro Oda, Kenichiro Nakao
Patented Case
View Patent ↗
Granted: Jan 24, 1984
Filed: Feb 10, 1982
Inventors
Kunihiko Ofuchi
Koichiro Oda
Kenichiro Nakao
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.