Granted Patent
Utility
US 4,912,150 · App. 07/265,878
Glass fiber reinforced thermoplastic resin compositions
Inventors:
Masashi Ushiroji, Yukio Yoshihara
Patented Case
View Patent ↗
Granted: Mar 27, 1990
Filed: Nov 1, 1988
Inventors
Masashi Ushiroji
Yukio Yoshihara
Assignee (at issue)
Mitsui Petrochemical 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.