Granted Patent
Utility
US 4,242,376 · App. 06/085,434
Method for metal plating of powder by substitution
Inventors:
Yoshio Kawasumi, Mitsuo Takahashi
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Oct 16, 1979
Inventors
Yoshio Kawasumi
Mitsuo Takahashi
Assignee (at issue)
Nihon Kogyo Co., 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.