Granted Patent
Utility
US 4,797,304 · App. 06/947,603
Continuous coating method capable of achieving higher yield
Inventor:
Tunezo Sugita
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Dec 30, 1986
Inventor
Tunezo Sugita
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.