Granted Patent
Utility
US 6,348,541 · App. 08/116,555
Process for preparing a water-in-oil emulsion
Inventors:
Shoichi Kanda, Takeshi Narita, Masahiro Ushigome, Masaharu Nagahama
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: Sep 7, 1993
Inventors
Shoichi Kanda
Takeshi Narita
Masahiro Ushigome
Masaharu Nagahama
Assignee (at issue)
MITSUBISHI ELECTRIC 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.