Granted Patent
Utility
US 4,442,172 · App. 06/394,625
Ink jet recording sheet
Inventors:
Hiroyo Oshima, Matsukuma Daisaku, Kojima Yutaka, Kobayashi Yukio, Nagai Koichi
Patented Case
View Patent ↗
Granted: Apr 10, 1984
Filed: Jul 2, 1982
Inventors
Hiroyo Oshima
Matsukuma Daisaku
Kojima Yutaka
Kobayashi Yukio
Nagai Koichi
Assignee (at issue)
Jujo 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.