Granted Patent
Utility
US 5,118,756 · App. 07/646,454
Reaction system modifier suitable for use in the productions of microcapsules
Inventors:
Makoto Asano, Kiyoharu Hasegawa, Yukio Tamura, Yoshihiro Oono
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Jan 25, 1991
Inventors
Makoto Asano
Kiyoharu Hasegawa
Yukio Tamura
Yoshihiro Oono
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.