Granted Patent
Utility
US 5,359,117 · App. 08/087,340
Processes for producing aromatic polycarbonate oligomer and aromatic polycarbonate
Inventors:
Yoshiyuki Totani, Motokazu Hirao, Tomonori Ito, Masakatsu Nakatsuka, Akihiro Yamaguchi, Ken-ichi Goto, Takashi Kuroki, Yukiko Mori, Shoji Obuchi, Masahiro Ohta
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Jul 8, 1993
Inventors
Yoshiyuki Totani
Motokazu Hirao
Tomonori Ito
Masakatsu Nakatsuka
Akihiro Yamaguchi
Ken-ichi Goto
Takashi Kuroki
Yukiko Mori
Shoji Obuchi
Masahiro Ohta
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.