Granted Patent
Utility
US 4,681,151 · App. 06/911,878
Method for production of fiber-reinforced metal composite material
Inventors:
Yoshihiro Koya, Toshiaki Katayama
Patented Case
View Patent ↗
Granted: Jul 21, 1987
Filed: Sep 26, 1986
Inventors
Yoshihiro Koya
Toshiaki Katayama
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.