Granted Patent
Utility
US 4,814,366 · App. 07/104,223
Thermoplastic polyester resin composition
Inventors:
Takuji Hirahara, Takashi Nakamura, Yoshiko Aoyama, Shuichi Maeda
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Oct 5, 1987
Inventors
Takuji Hirahara
Takashi Nakamura
Yoshiko Aoyama
Shuichi Maeda
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.