Granted Patent
Utility
US 5,409,776 · App. 08/189,995
Multi-shell emulsion particle
Inventors:
Kousuke Someya, Akihiro Yamazaki, Futoshi Hoshino, Takeshi Yanagihara
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Feb 1, 1994
Inventors
Kousuke Someya
Akihiro Yamazaki
Futoshi Hoshino
Takeshi Yanagihara
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.