Granted Patent
Utility
US 5,455,324 · App. 08/111,455
Aromatic polycarbonate resin of improved color
Inventors:
Masahiro Nukui, Takao Tayama, Takeshi Kashiwagi, Masatoshi Kimura, Hidekazu SHOJI
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Aug 25, 1993
Inventors
Masahiro Nukui
Takao Tayama
Takeshi Kashiwagi
Masatoshi Kimura
Hidekazu SHOJI
Assignee (at issue)
MITSUBISHI CHEMICAL 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.