Granted Patent
Utility
US 5,380,814 · App. 08/073,677
Aromatic polycarbonate and process for production thereof
Inventors:
Yoshiyuki Totani, Motokazu Hirao, Tomonori Ito, Masakatsu Nakatsuka, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Jan 10, 1995
Filed: Jun 8, 1993
Inventors
Yoshiyuki Totani
Motokazu Hirao
Tomonori Ito
Masakatsu Nakatsuka
Akihiro Yamaguchi
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.