Granted Patent
Utility
US 4,369,303 · App. 06/200,596
Process for producing an aromatic polyesterpolycarbonate
Inventors:
Hazime Mori, Katsuhisa Kohyama, Katsuhiko Nakamura, Katsuyuki Sakata, Akira Matsuno
Patented Case
View Patent ↗
Granted: Jan 18, 1983
Filed: Oct 24, 1980
Inventors
Hazime Mori
Katsuhisa Kohyama
Katsuhiko Nakamura
Katsuyuki Sakata
Akira Matsuno
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.