Granted Patent
Utility
US 4,308,373 · App. 06/191,287
Halogen-containing polycarbonate resin and process for producing same
Inventors:
Hazime Mori, Katsuhisa Kohyama, Katsuhiko Nakamura, Shigeyuki Haruhata
Patented Case
View Patent ↗
Granted: Dec 29, 1981
Filed: Sep 26, 1980
Inventors
Hazime Mori
Katsuhisa Kohyama
Katsuhiko Nakamura
Shigeyuki Haruhata
Assignee (at issue)
Mitsubishi Chemical 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.