Granted Patent
Utility
US 4,895,688 · App. 07/261,310
Method of producing a support for photographic paper
Inventors:
Tsunehisa Shigetani, Masahiro Kamiya, Tatsuo Miyakoda, Katsuhiko Sakata, Toshio Inada, Tatsumi Okada
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Oct 24, 1988
Inventors
Tsunehisa Shigetani
Masahiro Kamiya
Tatsuo Miyakoda
Katsuhiko Sakata
Toshio Inada
Tatsumi Okada
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.