Granted Patent
Utility
US 5,565,129 · App. 08/456,812
Polycarbonates, uses thereof, processes for preparing and purifying same
Inventors:
Masahide Tanaka, Tadaaki Fujimoto, Tetsuo Hayashi, Takashi Hayashi, Kazunori Takahata
Patented Case
View Patent ↗
Granted: Oct 15, 1996
Filed: Jun 1, 1995
Inventors
Masahide Tanaka
Tadaaki Fujimoto
Tetsuo Hayashi
Takashi Hayashi
Kazunori Takahata
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.