Granted Patent
Utility
US 4,238,385 · App. 06/066,822
Coating composition for forming insulating film on electroconductive substrate for printed circuits and method therefor
Inventors:
Yasuomi Okado, Ken Nishizaki, Akinobu Tanaka
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Aug 14, 1979
Inventors
Yasuomi Okado
Ken Nishizaki
Akinobu Tanaka
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
SHINTO PAINT 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.