Granted Patent
Utility
US 5,648,423 · App. 08/411,597
Polyamide resin composition
Inventors:
Mamoru Kagami, Mutsuhiro Tanaka, Masahiro Sugi
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Apr 5, 1995
Inventors
Mamoru Kagami
Mutsuhiro Tanaka
Masahiro Sugi
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.