Granted Patent
Utility
US 5,273,824 · App. 07/648,785
Cored multi-shell emulsion particle
Inventors:
Futoshi Hoshino, Makoto Nakano, Kousuke Someya, Junko Morita, Takeshi Yanagihara, Akihiro Yamazaki
Patented Case
View Patent ↗
Granted: Dec 28, 1993
Filed: Feb 1, 1991
Inventors
Futoshi Hoshino
Makoto Nakano
Kousuke Someya
Junko Morita
Takeshi Yanagihara
Akihiro Yamazaki
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.