Granted Patent
Utility
US 4,797,346 · App. 07/051,224
Light-sensitive composition for positive-type light-sensitive lithographic printing plates
Inventors:
Takeshi Yamamoto, Nobumasa Sasa, Miegi Nakano
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: May 13, 1987
Inventors
Takeshi Yamamoto
Nobumasa Sasa
Miegi Nakano
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.