Granted Patent
Utility
US 4,657,557 · App. 06/720,758
Sheets for sublimation transfer recording
Inventors:
Toshio Niwa, Yukichi Murata, Takashi Morishima
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Apr 8, 1985
Inventors
Toshio Niwa
Yukichi Murata
Takashi Morishima
Assignee (at issue)
Mitsubishi Chemical Industries, 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.