Granted Patent
Utility
US 4,357,403 · App. 06/176,184
Photoconductive plate for printing and a method for the preparation of a printing plate by heating
Inventors:
Fumio Shimada, Kinu Hiruma
Patented Case
View Patent ↗
Granted: Nov 2, 1982
Filed: Aug 7, 1980
Inventors
Fumio Shimada
Kinu Hiruma
Assignee (at issue)
Konishiroku Photo Industry 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.