Granted Patent
Utility
US 4,177,073 · App. 05/852,540
Photosensitive resin composition comprising cellulose ether aromatic carboxylic ester
Inventors:
Yukinori Hata, Tsutomu Watanabe, Fumio Itoh
Patented Case
View Patent ↗
Granted: Dec 4, 1979
Filed: Nov 17, 1977
Inventors
Yukinori Hata
Tsutomu Watanabe
Fumio Itoh
Assignee (at issue)
Oji Paper 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.