Granted Patent
Utility
US 4,450,123 · App. 06/392,142
Process for producing microcapsules
Inventors:
Setsuya Egawa, Masahiro Sakamoto
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Jun 25, 1982
Inventors
Setsuya Egawa
Masahiro Sakamoto
Assignee (at issue)
Jujo Paper Co., 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.