Granted Patent
Utility
US 4,536,465 · App. 06/456,442
Positive-working photosensitive composition with o-quinone diazide and admixture of resins
Inventors:
Masafumi Uehara, Atsuo Yamazaki, Kazuhiro Shimura
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Jan 7, 1983
Inventors
Masafumi Uehara
Atsuo Yamazaki
Kazuhiro Shimura
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.