Granted Patent
Utility
US 4,460,278 · App. 06/337,765
Continuous bulk polymerization reactor
Inventors:
Tetsuyuki Matsubara, Norifumi Ito, Yuzuru Ishida, Mune Iwamoto, Tetsuo Maeda
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: Jan 7, 1982
Inventors
Tetsuyuki Matsubara
Norifumi Ito
Yuzuru Ishida
Mune Iwamoto
Tetsuo Maeda
Assignees (at issue)
TOYO ENGINEERING CORPORATION
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.