Granted Patent
Utility
US 6,372,866 · App. 09/291,184
Process for producing cationic emulsion
Inventors:
Mitsuo Tamazawa, Nobuyuki Urushibara, Yasuo Kuroda
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Apr 14, 1999
Inventors
Mitsuo Tamazawa
Nobuyuki Urushibara
Yasuo Kuroda
Assignee (at issue)
Taisei 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.