Granted Patent
Utility
US 4,490,434 · App. 06/470,460
Thermal dye-transfer type recording sheet
Inventors:
Hiroyo Oshima, Isao Kano, Yutaka Kojima, Kazuo Harada, Takeo Konno
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Feb 28, 1983
Inventors
Hiroyo Oshima
Isao Kano
Yutaka Kojima
Kazuo Harada
Takeo Konno
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.