Granted Patent
Utility
US 4,699,976 · App. 06/843,964
Continuous process for the treatment of polymer composition to remove unreacted monomer and solvent
Inventors:
Tetsuyuki Matsubara, Norifumi Ito, Mune Iwamoto, Toshihiko Ando
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Mar 25, 1986
Inventors
Tetsuyuki Matsubara
Norifumi Ito
Mune Iwamoto
Toshihiko Ando
Assignees (at issue)
Mitsui Toatsu Chemicals, Incorporated
TOYO ENGINEERING CORPORATION
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.