Granted Patent
Utility
US 4,480,065 · App. 06/495,255
Polypropylene-base resin composition
Inventors:
Yoichi Kawai, Yoshihisa Gotoh, Masami Maki, Akio Yoshihara, Minoru Hoshino, Katsumi Sekiguchi
Patented Case
View Patent ↗
Granted: Oct 30, 1984
Filed: May 17, 1983
Inventors
Yoichi Kawai
Yoshihisa Gotoh
Masami Maki
Akio Yoshihara
Minoru Hoshino
Katsumi Sekiguchi
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.