Granted Patent
Utility
US 4,467,027 · App. 06/380,119
Process of developing posi-type lithographic printing plate with inorganic alkali solution
Inventors:
Takeshi Yamamoto, Kiyoshi Goto, Yoshio Kurita, Noriyasu Kita, Naoshi Kunieda
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: May 20, 1982
Inventors
Takeshi Yamamoto
Kiyoshi Goto
Yoshio Kurita
Noriyasu Kita
Naoshi Kunieda
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.