Granted Patent
Utility
US 5,213,873 · App. 07/600,378
Aqueous ink-jet recording sheet
Inventors:
Kenji Yasuda, Kazuaki Ohshima, Susumu Hasegawa
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Oct 19, 1990
Inventors
Kenji Yasuda
Kazuaki Ohshima
Susumu Hasegawa
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.