Granted Patent
Utility
US 5,210,132 · App. 07/961,026
Continuous process for preparing rubber modified high impact resin
Inventors:
Tetsuyuki Matsubara, Norifumi Ito, Mune Iwamoto, Kazuo Sugazaki, Toshihiko Ando, Yasuo Furuta, Kouzo Ichikawa, Hitoshi Ozawa
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Oct 14, 1992
Inventors
Tetsuyuki Matsubara
Norifumi Ito
Mune Iwamoto
Kazuo Sugazaki
Toshihiko Ando
Yasuo Furuta
Kouzo Ichikawa
Hitoshi Ozawa
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.