Granted Patent
Utility
US 4,409,377 · App. 06/339,939
Suspension polymerization process
Inventors:
Yoshiharu Misaka, Takamitsu Morita
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Jan 18, 1982
Inventors
Yoshiharu Misaka
Takamitsu Morita
Assignee (at issue)
Mitsubishi 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.